Class / Patent application number | Description | Number of patent applications / Date published |
423240000 | Halogenous component | 67 |
20080233027 | Processes for Separating Chlorine from Chlorine-Containing Gas Streams - Processes comprising: providing a gas stream comprising chlorine and at least one secondary component selected from the group consisting of carbon dioxide, nitrogen and oxygen; pressurizing the gas stream in a first stage to an elevated or enhanced pressure, preferably at least about 10 bar; cooling the pressurized gas stream in a second stage comprising a condensation zone and a gas/liquid contact zone disposed below the condensation zone, such that at least a portion of the chlorine is condensed and contacted countercurrently in the gas/liquid contact zone with the pressurized gas stream entering the second stage to form a condensate; and separating the condensate in a third stage comprising a rectifying column to provide a chlorine-rich sump stream and a low-chlorine head stream. | 09-25-2008 |
20080241035 | Agent for rendering halogen-containing gas harmless, and method of rendering halogen-containing gas harmless using same - An agent for rendering harmless a halogen-containing gas such as a halogen-containing exhaust gas, which comprises a faujasite zeolite having a SiO | 10-02-2008 |
20080267846 | PROCESSES FOR THE PURIFICATION AND OXIDATION OF A HYDROGEN CHLORIDE-CONTAINING GAS WHICH ALSO CONTAINS SULFUR COMPOUND(S) - Processes comprising: providing a crude gas comprising hydrogen chloride and at least one sulfur compound; and passing the crude gas across a sacrificial material such that at least a portion of the at least one sulfur compound is oxidized and precipitated as sulfate onto the sacrificial material to provide a hydrogen chloride product gas. | 10-30-2008 |
20090104100 | METHOD FOR DETOXIFYING HCD GAS AND APPARATUS THEREFOR - Hexachlorodisilane is decomposed into hydrochloric acid, silicon dioxide and water by introducing hexachlorodisilane-containing flue gas into a reaction region without moistening the flue gas and by supplying oxygen-containing gas that also contains a small amount of moisture to the reaction region maintained at a temperature at which hexachlorodisilane decomposes. | 04-23-2009 |
20090123353 | SOLVOTHERMAL METHOD FOR PREPARING VANADIA-TITANIA CATALYST HAVING NANO STRUCTURE FOR DECOMPOSING CHLORINATED ORGANIC COMPOUNDS - The present invention relates to a method for preparing a vanadia-titania catalyst having a core-shell structure, which is highly active in decomposing chlorinated organic compounds such as dioxin present in the exhaust of an incinerator. | 05-14-2009 |
20090191109 | EXHAUST STRUCTURE OF FILM-FORMING APPARATUS, FILM-FORMING APPARATUS, AND METHOD FOR PROCESSING EXHAUST GAS - A film-forming apparatus | 07-30-2009 |
20090202411 | Method treating a gas stream - A method of treating a gas stream containing silane or other silicon-containing gas is described, in which the gas stream is conveyed to a liquid ring pump or screw-mechanism pump, to which are also supplied an oxidant for oxidising the silicon-containing gas within the pump, and a liquid for forming a liquid ring or intermittent flushing within the pump. A liquid stream containing said liquid and a by-product of the oxidation of the silicon-containing gas is exhaust from the pump. | 08-13-2009 |
20090257936 | PROCESS FOR THE TREATMENT OF GAS PHASE ALKALINE CHLORIDE IN A COMBUSTION PLANT, COMBUSTION PLANT FOR CARRYING OUT THE PROCESS, AND THE USE OF A PHOSPHOROUS SUBSTANCE FOR THE TREATMENT OF ALKALINE CHLORIDE IN GASEOUS PHASE IN A COMBUSTION PLANT - A process for the treatment of gas phase alkaline chlorides in a combustion plant that is arranged for combustion of solid fuel and which includes a combustion chamber from which a flue-gas flow is directed to pass a heat transfer device. A phosphorous substance is added to the flue-gas flow, separate from the fuel, the substance chosen from a group of substances that form phosphorous oxide at combustion temperatures of approx. 500° C. or above, wherein the phosphorous substance is distributed in the flue-gas at a location upstream of the heat transfer device. The phosphorous substance is added to an amount which results in phosphatising of gas phase alkaline chlorides included in the flue-gas flow before the chlorides reach the heat transfer device. A corresponding combustion plant is disclosed, as well as the use of a phosphorous substance for phosphatising alkaline chloride in gaseous phase in a flue-gas flow. | 10-15-2009 |
20100008838 | METHODS AND APPARATUS FOR ABATING ELECTRONIC DEVICE MANUFACTURING PROCESS EFFLUENT - A thermal abatement system is provided, including: a thermal abatement reactor; an inlet in fluid communication with the reactor; a process chamber in fluid communication with the inlet; a first sheathing fluid source in fluid communication with the inlet; a first flow control device, adapted to regulate a flow of a first sheathing fluid from the first sheathing fluid source; and a controller, in signal communication with the first flow control device, adapted to regulate the sheathing fluid by operating the first flow control device; wherein the inlet is adapted to receive an effluent stream from the process chamber and the first sheathing fluid from the first sheathing fluid source, to sheathe the effluent stream with the first sheathing fluid to form a sheathed effluent stream, and to introduce the sheathed effluent stream into the reactor. | 01-14-2010 |
20100061908 | Gs Abatement - Low-cost apparatus is described for treating an effluent fluid stream from a process tool. In one embodiment, the apparatus comprises an abatement device ( | 03-11-2010 |
20100074820 | XENON RETRIEVAL SYSTEM AND RETRIEVAL DEVICE - To provide a simple highly-pure Xe retrieval method and device with high retrieval efficiency by functionally removing such elements as water, CO2 and FCs from waste gases from semiconductor production processes, such as the plasma etching, that contain low-concentration Xe. For samples containing xenon and fluorocarbon, this invention is characterized by having at least first adsorption means (A | 03-25-2010 |
20100086459 | Impurity removing apparatus and method of operating the same - An impurity removing apparatus is simple in structure for removing impurities from a rare gas and enable to make the rare gas reusable. The impurity removing apparatus includes a first treatment device | 04-08-2010 |
20100178225 | METHOD FOR TREATMENT OF A GAS STREAM CONTAINING SILICON TETRAFLUORIDE AND HYDROGEN CHLORIDE - The present invention is directed to a method for treatment of a gas stream comprising silicon tetrafluoride and hydrogen chloride. For example, the present invention is directed to a method for treatment of such a gas stream that involves contacting the gas stream with a metal that reacts with the hydrogen chloride to provide a treated gas stream having reduced hydrogen chloride content. The present invention is further directed to methods for subjecting silicon tetrafluoride and hydrogen chloride-containing gas streams to elevated pressure to provide gas streams suitable for transport. | 07-15-2010 |
20100247412 | Method for Removal of CIO3F - [Object] An object of the present invention is to provide an inexpensive method for removing ClO | 09-30-2010 |
20100260654 | METHOD AND DEVICE FOR ENTRAINED-FLOW SULFATION OF FLUE GAS CONSTITUENTS - A method for entrained-flow sulfation of sulfatable flue gas constituents of an oxygen-containing flue gas in an incineration plant having at least one combustion chamber and a waste gas burnout zone includes passing the oxygen-containing flue gas through the waste gas burnout zone. The oxygen-containing flue gas is tempered by lowering a temperature of the oxygen-containing flue gas. The oxygen-containing flue gas is passed through a sufation zone so that the oxygen-containing flue gas has a temperature interval of between 700 and 900° C. during a time period of between 2 and 20 s so as to convert sulfatable flue gas constituents present in the oxygen-containing flue gas to solid sulfate-containing ash particles so as to reduce a halide concentration in ash deposits thereof. | 10-14-2010 |
20100278703 | Method to neutralize hydrogen chloride in superheated geothermal steam without destroying superheat - Hydrogen chloride in superheated steam is neutralized by contacting the steam with a solution containing potassium carbonate. A solution of potassium carbonate will remain liquid when contacted by steam superheated by as much as 40° C. and, unlike sodium carbonate, the degree of superheat of a saturated solution of potassium carbonate increases with temperature. | 11-04-2010 |
20100329956 | Exhaust gas treatment method and system - An exhaust gas treatment system treats exhaust gases collected from at least one PFC dealing device that deals with a PFC gas. The exhaust gas treatment system includes: an exhaust emission line through which the exhaust gases collected from the PFC dealing device; an external exhaust gas disposal device connected to the exhaust emission line so as to purify the exhaust gases for exhaust emission; a gas treatment device for eliminating the PFC gas from the exhaust gases; a gas treatment line branched from the exhaust emission line to supply the exhaust gases to the gas treatment device; and an intermediate line for discharge the treated exhaust gases from the gas treatment device to the external exhaust gas disposal device. | 12-30-2010 |
20110052469 | SYSTEMS AND METHODS FOR TREATING AIR STREAMS EXHAUSTED FROM FIRING KILNS - A system for treating an air stream exhausted from a firing kiln utilized to heat a ceramic substrates includes an outlet assembly and a thermal oxidizer. The outlet assembly may be in fluid communication with the firing kiln, and may be operational to receive an exhaust gas stream and a waste heat stream from the firing kiln. A temperature of the waste heat stream may be greater than the exhaust gas stream such that a temperature of an air stream comprising the waste heat stream and the exhaust gas stream within the outlet assembly is greater than the exhaust gas stream. The thermal oxidizer may be in fluid communication with the outlet assembly to receive the air stream and remove pollutants from the air stream. | 03-03-2011 |
20110158878 | METHOD AND DEVICE FOR PROCESSING EXHAUST GAS - An exhaust gas processing method of the present invention includes sequentially introducing an exhaust gas from a semiconductor manufacturing equipment to a combustion-based detoxifying device, a dust collector, and a two-stage gas cleaning device, so as to process the exhaust gas, wherein the two-stage gas cleaning device is comprised of a first-stage gas cleaning device and a second-stage gas cleaning device, and gas cleaning is performed in the first gas cleaning device that uses water as a cleaning solution and subsequently in the second gas cleaning device that uses an alkaline aqueous solution as a cleaning solution. | 06-30-2011 |
20120237423 | METHOD AND SYSTEM FOR MULTI-STAGE FLUE GAS CLEANING - Flue gas processing is described. A circulating dry flue gas desulfurization (DFGD) scrubber is positioned upstream of a wet flue gas desulfurization (WFGD) scrubber. Flue gas temperature and humidity is controlled. Reagent use is monitored and controlled. The DFGD scrubber is controlled without concern for sulfur dioxide absorption and thus reagent utilization is controlled based on the goal of removing one or more of: sulfur trioxide and/or other acid gases. In some embodiments the circulating DFGD scrubber removes the majority of sulfur trioxide, HCL, and/or HF from the flue gas stream supplied to the DFGD scrubber. The DFGD scrubber is followed by the WFGD scrubber that removes sulfur dioxide and mercury, to achieve a high degree of pollutant removal at a low operating cost as compared to some other systems. WFGD scrubber liquid waste is sent to the circulating DFGD scrubber and used for temperature and/or humidity control purposes. | 09-20-2012 |
20130004399 | PROCESS FOR DISPOSAL OF HEXACHLORODISILANE-CONTAINING VAPORS - Hexachlorodisilane and residues formed therefrom are disposed of without generating pyrophoric compositions by reaction with urea and alcohol in nonpolar solvent. | 01-03-2013 |
20130034486 | APPARATUS AND PROCESS FOR TREATMENT OF HALOORGANOSILICON COMPOUNDS FROM OFFGASES - The present invention relates to a novel apparatus in the form of a regenerator and to a process executed therein for treatment of offgases comprising impurities in the form of haloorganosilicon compounds. | 02-07-2013 |
20140241970 | Process and Apparatus for Improving the Operation of Wet Scrubbers - The description relates to improving the operation of wet scrubbers, especially those based on calcium carbonate, by reducing the quantities of soluble chlorides in the combustion gases fed to the scrubbers. By converting gaseous HCl in the combustion gases to a solid copper chloride and removing it before the chloride reaches the scrubber, the reactivity of the scrubbing slurry will be better maintained. Combustion gases are treated with an aqueous copper compound referred to as copper-bearing chloride remediator (CBCR). The process is preferably implemented by identifying locations within a combustor for feeding the CBCR, determining the physical form and injection parameters for the CBCR and injecting the CBCR under conditions effective to reduce HCl and/or sulfur oxides. Effective temperatures for introducing the CBCRs are preferably within the range of from about 250° to 900° F. Among the more preferred CBCRs are copper compositions including copper, an organic moiety and/or an ammonia moiety. One composition of this type is copper diamine diacetate, which has an empirical formula of C | 08-28-2014 |
20140314650 | Processes, Apparatus, Compositions and Systems for Reducing Emissions of HCl and/or Sulfur Oxides - The description relates to reducing emissions of HCl and sulfur oxides by treating combustion gases with an aqueous copper compound referred to as copper-based chloride remediator (CBCR). The process is preferably implemented by identifying locations within a combustor for feeding the CBCR, determining the physical form and injection parameters for the CBCR and injecting the CBCR under conditions effective to reduce HCl and/or sulfur oxides. Effective temperatures for introducing the copper-based chloride remediators are preferably within the range of from about 250° to 900° F. where the objective is to reduce HCl, while temperatures up to about 2200° F. can be employed where the objective is to reduce sulfur oxides. Among the more preferred CBCRs are copper compositions including copper and an ammonia moiety. One composition of this type that was tested was copper diammonium diacetate, which has an empirical formula of C | 10-23-2014 |
20140314651 | Process and Apparatus for Improving the Operation of Wet Scrubbers - The description relates to improving the operation of wet scrubbers, especially those based on calcium carbonate, by reducing the quantities of soluble chlorides in the combustion gases fed to the scrubbers. By converting gaseous HCl in the combustion gases to a solid copper chloride and removing it before the chloride reaches the scrubber, the reactivity of the scrubbing slurry will be better maintained. Combustion gases are treated with an aqueous copper compound referred to as copper-bearing chloride remediator (CBCR). The process is preferably implemented by identifying locations within a combustor for feeding the CBCR, determining the physical form and injection parameters for the CBCR and injecting the CBCR under conditions effective to reduce HCl and/or sulfur oxides. Effective temperatures for introducing the CBCRs are preferably within the range of from about 250° to 900° F. Among the more preferred CBCRs are copper compositions including copper, an organic moiety and/or an ammonia moiety. One composition of this type is copper diamine diacetate, which has an empirical formula of C | 10-23-2014 |
20140356269 | Recovery of Halogens by Partial Condensation - A method includes injecting a feed stream including a hydrogen halide and water into a vapor liquid separator. The feed stream has a liquid phase and a vapor phase. The method further includes separating the liquid phase and the vapor phase in the vapor liquid separator to form condensate and vapor, and discharging the condensate from the vapor liquid separator in a liquid stream. The method also includes discharging the vapor from the vapor liquid separator in a vapor stream. | 12-04-2014 |
20150110697 | METHYL IODIDE ADSORBER, USE THEREOF AND METHOD FOR THE ADSORPTION OF METHYL IODIDE - A methyl iodide adsorber, comprising a zeolite containing at least one iodide-adsorbing metal or a compound thereof, wherein the zeolite is a hydrophobic zeolite. Also, a use of the adsorber and a method for the adsorption of methyl iodide. | 04-23-2015 |
20150299011 | METHOD FOR BREAKDOWN OF TOXIC ORGANIC COMPOUNDS CONTAINED IN WASTEWATERS AND/OR WASTE GASES - A method is disclosed for breaking down toxic organic compounds contained in wastewaters and/or waste gases, in which the wastewaters and/or waste gases loaded with toxic organic compounds are first passed into an aqueous basic alkali/alkaline earth solution/suspension bath for destabilization of the toxic organic compounds and then the solution/suspension bath containing the destabilized toxic organic compounds is fed in ascending fashion into a capillary mass arranged above the bath, consisting of a mixture of pulps and peat mixed with bentonite, zeolite and/or lime with a particle size <200 μm. | 10-22-2015 |
20160016113 | Reducing Hydrochloric Acid in Cement Kilns - The description relates to reducing hydrochloric acid in cement kilns. In one aspect, an aqueous copper-based chloride remediator is introduced into contact with combustion gases from a cement kiln. Injection is made into a defined introduction zone under conditions effective for HCl emissions control wherein the temperature is within the range of from 300° F. to 800° F., preferably from 550° F. to 750° F. The resulting d gases are discharged from the defined zone following sufficient reaction time to reduce the HCl concentration in the gases. | 01-21-2016 |
20160082388 | DEVICE AND PROCESS FOR FLUORINE RECOVERY FROM SMOKE AFTER PHOSPHORUS ABSORPTION BY HYDRATION IN KILN PROCESS FOR PRODUCTION OF PHOSPHORIC ACID - A device and process for fluorine recovery from smoke after phosphorus absorption by hydration in KPA, wherein the device comprises a first-stage and second-stage fluorine absorption tower, which are both fluidised counter-current washing towers. The device according to the present invention has simple structure, low investment cost, high raw material utilization rate, and good fluorine recovery effects. | 03-24-2016 |
20160089630 | VACUUM FORELINE REAGENT ADDITION FOR FLUORINE ABATEMENT - Embodiments disclosed herein include an abatement system for abating compounds produced in semiconductor processes. The abatement system includes a foreline having a first end configured to couple to an exhaust port of a vacuum processing chamber, and an injection port is formed in the foreline. The abatement system further includes a scrubber coupled to a second end of the foreline. There is no effluent burner or plasma source interfaced with the foreline between the first end and the scrubber. Low temperature steam is injected into the foreline through the injection port to abate the PFCs flowing out of the vacuum processing chamber. | 03-31-2016 |
20160158696 | TREATMENT PROCESS OF PHOSPHOROUS PENTAFLUORIDE - A treatment process of PF | 06-09-2016 |
20090022642 | Treatment method for decomposing perfluorocompound, decomposing catalyst and treatment apparatus - An object of the present invention is to improve the decomposition at low temperatures of perfluorocompounds containing only fluorine as a halogen, such as CF | 01-22-2009 |
20090060811 | Wide Mesoporous Alumina Composites Having Trimodal Pore Structure - Wide mesoporous alumina composites are produced by an “in situ reaction” route comprising agglomeration of an alumina powder that is capable of rehydration together with a second reactive powder such as carbonate. In one method of production, the powders are fed to a rotating forming device that is continuously sprayed with liquid under conditions to form particulates. The discharging beads are then subjected to curing and thermal activation to produce the final catalyst or adsorbent. The alumina participates in a pore altering process involving the carbonate component upon formation of hydroxycarbonate intermediates such as Dawsonite. Large fraction of the pore volume of the final product consists of wide mesopores in the 15-50 nanometers range. The alumina composites exhibit a characteristic trimodal pore structure that includes also small micro-meso pores and macropores larger than 200 nanometers. | 03-05-2009 |
20090092530 | METHOD FOR TREATMENT OF A GAS STREAM CONTAINING SILICON TETRAFLUORIDE AND HYDROGEN CHLORIDE - The present invention is directed to a method for treatment of a gas stream comprising silicon tetrafluoride and hydrogen chloride. For example, the present invention is directed to a method for treatment of such a gas stream that involves contacting the gas stream with a metal that reacts with the hydrogen chloride to provide a treated gas stream having reduced hydrogen chloride content. The present invention is further directed to methods for subjecting silicon tetrafluoride and hydrogen chloride-containing gas streams to elevated pressure to provide gas streams suitable for transport. | 04-09-2009 |
20090155154 | APPARATUS FOR DECOMPOSING SUFLUR-FLUORINE-CONTAINING COMPOUND AND METHOD THEREOF - The invention provides a method for decomposing sulfur-fluorine-containing compound and apparatus thereof. Sulfur-fluorine-containing compound is decomposed in two steps, comprising contacting the compound with a first catalyst such as a monometallic catalyst and a second catalyst such as a bimetallic catalyst, and at a low reaction temperature to produce resulting compounds capable of water-solubility. Then, the resulting compounds, namely sulfur- or fluorine-containing compounds, are removed by washing. | 06-18-2009 |
20090232719 | Apparatus for treating a gas stream - Apparatus for treating a gas stream comprises a plurality of cylindrical proton conducting membranes. The gas stream is conveyed through the bore of each cylindrical membrane, and a hydrogen-containing gas is conveyed about the external surface of each cylindrical membrane. A catalyst provided on the inner side of each membrane catalyses a reaction between a halogen-containing component of the gas stream, such as CF | 09-17-2009 |
20100074821 | APPARATUS AND METHOD FOR TREATING A GAS STREAM - Apparatus for treating a gas stream comprises a nonthermal plasma reactor, for example a dielectric barrier discharge plasma reactor ( | 03-25-2010 |
20110044874 | Oxidation Catalyst and Method for Destruction of CO, VOC and Halogenated VOC - An oxidation catalyst deposited on a substrate is described for the destruction of CO and volatile organic compounds, in particular halogenated organic compounds, from an emissions stream at temperatures from 250° C. to 450° C. The oxidation catalyst includes at least two platinum group metals, one of which is either platinum or ruthenium, supported on refractory oxides, such as a solid solution of CeO | 02-24-2011 |
20110064637 | Process for the joint production of sodium carbonate and sodium bicarbonate - Process for the joint production of sodium carbonate and sodium bicarbonate crystals, according to which: a solid powder derived from sodium sesquicarbonate, having a mean particle diameter comprised between 0.1 and 10 mm is dissolved in water; the resulting water solution is introduced into a crystallizer, wherein a first water suspension comprising sodium carbonate crystals is produced; the first water suspension is subjected to a separation, in order to produce crystals comprising sodium carbonate on the one hand, which are valorized, and a mother liquor on the other hand; and a part of the mother liquor is taken out of the crystallizer and put into contact in, a gas liquid contactor, with a gas comprising carbon dioxide, in order to produce a second water suspension comprising sodium bicarbonate crystals, which are separated and valorized. A reagent powder comprising sodium bicarbonate crystals made by such process. | 03-17-2011 |
20110123422 | Flue Gas Scrubbing - Herein is disclosed a flue gas scrubbing composition, a method of using the flue gas scrubbing composition, and a method of entombing mercury collected with the flue gas scrubbing composition. The flue gas scrubbing composition includes an admixture of a mercury sorbent material that comprises a clay, copper, and sulfur; and lime that comprises calcium oxide and/or calcium hydroxide. The method of collecting mercury from a flue gas includes injecting the flue gas scrubbing composition of any one of the preceding claims into a flue duct comprising the flue gas; reacting the mercury sorbent material with mercury in the flue gas to form a mercury-sorbed material and thereby reducing the concentration of mercury in the flue gas; reacting the lime with SO | 05-26-2011 |
20110135553 | Milling process - Process for milling a substance selected from the group consisting of sodium carbonate, sodium bicarbonate, sodium sesquicarbonate, and trona, in which the substance is milled with a cleaning agent in a mill for the purpose of obtaining a powder with a mean diameter of less than 100 μm and of inhibiting the formation of incrustations in the mill. In a process for scrubbing a flue gas contaminated by a volatile acid compound, the powder is injected in the flue gas. | 06-09-2011 |
20110268639 | METHOD AND A DEVICE FOR VERIFYING AND CONTROLLING THE REMOVAL OF HYDROGEN FLUORIDE FROM A PROCESS GAS - A gas cleaning system ( | 11-03-2011 |
20120251423 | Methods For Reducing The Acidic Gas Content of Effluent Gases - Methods for reducing the acidic gas content of effluent gas streams are disclosed. The methods generally involve reducing the acidic gas content of combustion gases passing through a duct by injecting hydrated lime or pulverized quicklime into the duct by use of a shrouded injector which reduces the incidence of occlusion of the injector. | 10-04-2012 |
20120308461 | Crosslinked Polymer-Carbon Sorbent for Removal of Heavy Metals, Toxic Materials and Carbon Dioxide - A polymer-carbon sorbent for removing carbon dioxide, heavy metals and toxic materials from a flue gas from a combustion process, such as coal-fired power plants, is described. The sorbent comprises a carbonaceous sorbent material and a cured amine-containing polymer, and sulfur. The polymer-carbon sorbents are formed by curing a curable amine-containing polymer in the presence of the carbonaceous sorbent material, sulfur, a cure accelerator and, optionally, a cure activator. A convenient carbonaceous sorbent material is an activated carbon, and a convenient curable amine-containing polymer is an allyl-containing poly(ethyleneimine), having a number average molecular weight between about 1,000 and about 10,000. The polymer-carbon sorbents may contain sulfur in excess of an amount needed to cure the curable amine-containing polymer. Such polymer-carbon sorbents are shown to capture more mercury, in both elemental an ionic forms, compared to activated carbon and adsorb carbon dioxide. | 12-06-2012 |
20130045150 | CATIONIC FIBERS HOSTING REACTIVE PEROXYGENATED RADICALS, AND METHODS OF MAKING AND USING THEM - Disclosed are reactive fibers having a polycationic exterior surface to which multivalent peroxy anions are bound. The use of such fibers, mats of such fibers, and filters of such fibers, as well as methods of treating fluid streams, and rejuvenating such fibers, mats and filters are also disclosed. | 02-21-2013 |
20130089484 | SILICA CONTAINING BASIC SORBENT FOR ACID GAS REMOVAL - An acid gas sorbent composition is disclosed. The composition comprises a compound having the following formula: (SiO | 04-11-2013 |
20130095018 | UP-FLOW FLUIDIZED BED DRY SCRUBBER AND METHOD OF OPERATING SAME - An up-flow fluidized bed dry scrubber and a method of operating same. The scrubber includes up-flow reactors. The reactors receive an exhaust gas flow containing pollutants and each reactor includes one or more spray lances that inject a dry, powdered sorbent into the flow vertically onto material dispersion assemblies installed in the reactor and one or more dual-fluid spray lances with multiple spray nozzles that introduce humidification water into the flow in the reactor. The sorbent and the humidification water combine to create a fluidized sorbent bed in the flow when the flow is sufficient to suspend the fluidized sorbent bed in the reactor, in which pollutants react with the sorbent in the bed and are removed from the gas as the gas flows through the bed in the reactor. | 04-18-2013 |
20130280154 | APPARATUS AND METHOD FOR TREATING PERFLUORO-COMPOUND - The present invention discloses an apparatus and method for treating perfluoro-compounds (PFCs). The method for treating PFCs includes: (a) decomposing PFCs and eliminating a first acid gas generated by the decomposition through a pre-cleaner; (b) filtering out dust particles from the exhaust gas through a filter; (c) electrifying the dust particles in the exhaust gas by electrical discharge and collecting dusts through a dust collector; (d) decomposing PFCs using a regenerative/catalytic reaction through a catalytic reactor; (e) eliminating a second acid gas generated by the regenerative/catalytic reaction through a post-cleaner; and (f) letting the purified exhaust gas out through a fan. | 10-24-2013 |
20130336868 | Dry Processes, Apparatus, Compositions and Systems for Reducing Sulfur Oxides and HCl - Dry processes, apparatus, compositions and systems are provided for reducing emissions of sulfur oxides, and sulfur dioxide in particular, and/or HCl in a process employing a combination of a dolomite hydrate sorbent and a sorbent doping agent administered to achieve coverage of a three-dimensional cross section of a passage carrying SO | 12-19-2013 |
20130343977 | CONTINUOUS DIFFUSION DENUDING WITH MOVING DENUDING SURFACE - A duct can be configured to receive a denuding gas flow. A solid denuding surface that is connected to a drive system can be configured to move the solid denuding surface within the duct while the solid denuding surface is continuously concentrating one or more gas-phase species from the denuding gas flow on the denuding surface. Also, a denuding gas flow can be passed along a denuding surface to concentrate one or more gas phase species from the denuding gas flow onto the denuding surface with a diffusion denuding action. The denuding surface can be moved while continuing to concentrate the one or more gas phase species from the denuding gas flow onto the denuding surface. | 12-26-2013 |
20150110698 | Process for Sulfur Dioxide, Hydrochloric Acid and Mercury Mediation - Dry processes, apparatus, compositions and systems are provided for reducing emissions of sulfur oxides, and sulfur dioxide in particular, and/or HCl and/or Hg in a process employing a combination of a lime-based sorbent, in particular hydrated lime and/or dolomitic hydrated lime, and a sorbent doping agent administered to achieve coverage of a three-dimensional cross section of a passage carrying SO | 04-23-2015 |
20160030914 | GRANULAR MATERIAL FOR ABSORPTION OF HARMFUL GASES AND PROCESS FOR PRODUCTION THEREOF - A granular sorption material including a plurality of porous granules formed by buildup agglomeration for separation, especially absorption, of harmful gases, especially of SO | 02-04-2016 |
20160101384 | DEVICE AND A METHOD OF CLEANING AN EFFLUENT GAS FROM AN ALUMINIUM PRODUCTION ELECTROLYTIC CELL - A gas cleaning unit for cleaning an effluent gas of at least one aluminium production electrolytic cell comprises a contact reactor in which the effluent gas is brought into contact with alumina, and a dust removal device for removing at least a portion of the alumina. The gas cleaning unit further comprises a wet scrubber in which the effluent gas is brought into contact with an absorption liquid containing water for removing further pollutants from the effluent gas. The wet scrubber is positioned at a point vertically higher than that of the dust removal device. | 04-14-2016 |
20160166986 | METHOD FOR PURIFICATION OF OFF-GAS AND DEVICE FOR THE SAME | 06-16-2016 |
20160175774 | PROCESS FOR ADSORBING HYDROGEN CHLORIDE FROM A REGENERATOR VENT GAS | 06-23-2016 |
20160175775 | PROCESS FOR ADSORBING HYDROGEN CHLORIDE FROM A REGENERATION VENT GAS | 06-23-2016 |
423241000 | Free halogen | 10 |
20090110622 | METHODS AND APPARATUS FOR SMART ABATEMENT USING AN IMPROVED FUEL CIRCUIT - A method for abating effluent from an electronic device manufacturing process is provided, including abating the effluent in a thermal abatement tool to form abated effluent; determining whether the abated effluent contains one or more chemical species of interest; and changing one or more operating parameters of the thermal abatement tool based upon the determination. Numerous other embodiments are provided. | 04-30-2009 |
20090130012 | METHOD FOR REMOVING HALOGEN SERIES GAS AND AGENT FOR REMOVING HALOGEN SERIES GAS - To provide an agent for removing a halogen series gas and a method for removing a halogen series gas which is excellent in a removing ability of removing the present halogen series gas in a low concentration area, which prevents an adsorbent from generating heat, and which is capable of reducing formation of a solid waste. | 05-21-2009 |
20090142244 | TREATMENT METHOD FOR DECOMPOSING PERFLUOROCOMPOUND, DECOMPOSING CATALYST AND TREATMENT APPARATUS - An object of the present invention is to improve the decomposition at low temperatures of perfluorocompounds containing only fluorine as a halogen, such as CF | 06-04-2009 |
20090297420 | Method of Treating a Gas Stream - A method is described for treating a gas stream comprising fluorine (F | 12-03-2009 |
20100196239 | CALCIUM AND/OR MAGNESIUM HYDROXIDE WITH VERY HIGH REACTIVITY, AND PREPARATION THEREOF - Calcium hydroxide particles with very high reactivity exhibiting an X-ray diffraction line at d=0.49 nm obtained by the Debye-Scherrer powder method with an intensity below 50% of the intensity of a traditional hydrated lime with a specific surface area of 15.8 m | 08-05-2010 |
20110081288 | APPARATUS AND METHOD THEREOF - The invention relates to a gas liquid contactor and effluent cleaning system and method and more particularly to an array of nozzles configured to produce uniformly spaced flat liquid jets with reduced linear stability. An embodiment of the invention is directed towards a stability unit used with nozzles of a gas liquid contactor and/or an enhancer for stable jet formation, and more particularly to reducing the stability of liquid jets formed from nozzles of the gas liquid contactor. Another aspect of the invention relates to operating the apparatus at a condition that reduces the stability of liquid jets, e.g., a droplet generator apparatus. Yet another aspect of the invention relates to operation of the apparatus with an aqueous slurry. Still another aspect of the invention is directed towards to an apparatus for substantially separating at least two fluids. | 04-07-2011 |
20130323149 | IODINE ABSORBENT MATERIAL CONTAINING SALT AND RADIOACTIVE IODINE REMOVAL SYSTEM USING THE SAME - An apparatus for filtering airborne radioactive iodine is provided. The apparatus includes a housing defining an interior space and comprising an inlet for receiving air and an outlet for discharging the air; and a composition placed in the interior space for trapping airborne radioactive iodine between the inlet and the outlet. The composition comprises one or more salts selected from the group consisting of an alkali metal chloride and an alkaline earth metal chloride. A method of filtering airborne radioactive iodine is further provided. The method includes providing the foregoing apparatus at a nuclear facility and blowing air to flow from the inlet to the outlet and contact the composition placed in the interior space, whereby airborne radioactive iodine is trapped in the interior space. | 12-05-2013 |
20140056794 | METHOD FOR TREATING EXHAUST GAS CONTAINING INORGANIC HALOGENATED GAS - A method for treating exhaust gas, comprising first contacting exhaust gas comprising inorganic halogenated gas discharged from sources of the exhaust gas with Fe | 02-27-2014 |
20160152475 | PHOSPHORUS ABSORPTION BY HYDRATION AND FLUORINE RECOVERY FOR FUME EXITING KILN IN KILN PHOSPHORIC ACID PROCESS | 06-02-2016 |
20160193566 | REVERSIBLE AND IRREVERSIBLE CHEMISORPTION IN NONPOROUS, CRYSTALLINE HYBRID STRUCTURES | 07-07-2016 |
423240000 | Solid removal agent | 25 |
20080233027 | Processes for Separating Chlorine from Chlorine-Containing Gas Streams - Processes comprising: providing a gas stream comprising chlorine and at least one secondary component selected from the group consisting of carbon dioxide, nitrogen and oxygen; pressurizing the gas stream in a first stage to an elevated or enhanced pressure, preferably at least about 10 bar; cooling the pressurized gas stream in a second stage comprising a condensation zone and a gas/liquid contact zone disposed below the condensation zone, such that at least a portion of the chlorine is condensed and contacted countercurrently in the gas/liquid contact zone with the pressurized gas stream entering the second stage to form a condensate; and separating the condensate in a third stage comprising a rectifying column to provide a chlorine-rich sump stream and a low-chlorine head stream. | 09-25-2008 |
20080241035 | Agent for rendering halogen-containing gas harmless, and method of rendering halogen-containing gas harmless using same - An agent for rendering harmless a halogen-containing gas such as a halogen-containing exhaust gas, which comprises a faujasite zeolite having a SiO | 10-02-2008 |
20080267846 | PROCESSES FOR THE PURIFICATION AND OXIDATION OF A HYDROGEN CHLORIDE-CONTAINING GAS WHICH ALSO CONTAINS SULFUR COMPOUND(S) - Processes comprising: providing a crude gas comprising hydrogen chloride and at least one sulfur compound; and passing the crude gas across a sacrificial material such that at least a portion of the at least one sulfur compound is oxidized and precipitated as sulfate onto the sacrificial material to provide a hydrogen chloride product gas. | 10-30-2008 |
20090104100 | METHOD FOR DETOXIFYING HCD GAS AND APPARATUS THEREFOR - Hexachlorodisilane is decomposed into hydrochloric acid, silicon dioxide and water by introducing hexachlorodisilane-containing flue gas into a reaction region without moistening the flue gas and by supplying oxygen-containing gas that also contains a small amount of moisture to the reaction region maintained at a temperature at which hexachlorodisilane decomposes. | 04-23-2009 |
20090123353 | SOLVOTHERMAL METHOD FOR PREPARING VANADIA-TITANIA CATALYST HAVING NANO STRUCTURE FOR DECOMPOSING CHLORINATED ORGANIC COMPOUNDS - The present invention relates to a method for preparing a vanadia-titania catalyst having a core-shell structure, which is highly active in decomposing chlorinated organic compounds such as dioxin present in the exhaust of an incinerator. | 05-14-2009 |
20090191109 | EXHAUST STRUCTURE OF FILM-FORMING APPARATUS, FILM-FORMING APPARATUS, AND METHOD FOR PROCESSING EXHAUST GAS - A film-forming apparatus | 07-30-2009 |
20090202411 | Method treating a gas stream - A method of treating a gas stream containing silane or other silicon-containing gas is described, in which the gas stream is conveyed to a liquid ring pump or screw-mechanism pump, to which are also supplied an oxidant for oxidising the silicon-containing gas within the pump, and a liquid for forming a liquid ring or intermittent flushing within the pump. A liquid stream containing said liquid and a by-product of the oxidation of the silicon-containing gas is exhaust from the pump. | 08-13-2009 |
20090257936 | PROCESS FOR THE TREATMENT OF GAS PHASE ALKALINE CHLORIDE IN A COMBUSTION PLANT, COMBUSTION PLANT FOR CARRYING OUT THE PROCESS, AND THE USE OF A PHOSPHOROUS SUBSTANCE FOR THE TREATMENT OF ALKALINE CHLORIDE IN GASEOUS PHASE IN A COMBUSTION PLANT - A process for the treatment of gas phase alkaline chlorides in a combustion plant that is arranged for combustion of solid fuel and which includes a combustion chamber from which a flue-gas flow is directed to pass a heat transfer device. A phosphorous substance is added to the flue-gas flow, separate from the fuel, the substance chosen from a group of substances that form phosphorous oxide at combustion temperatures of approx. 500° C. or above, wherein the phosphorous substance is distributed in the flue-gas at a location upstream of the heat transfer device. The phosphorous substance is added to an amount which results in phosphatising of gas phase alkaline chlorides included in the flue-gas flow before the chlorides reach the heat transfer device. A corresponding combustion plant is disclosed, as well as the use of a phosphorous substance for phosphatising alkaline chloride in gaseous phase in a flue-gas flow. | 10-15-2009 |
20100008838 | METHODS AND APPARATUS FOR ABATING ELECTRONIC DEVICE MANUFACTURING PROCESS EFFLUENT - A thermal abatement system is provided, including: a thermal abatement reactor; an inlet in fluid communication with the reactor; a process chamber in fluid communication with the inlet; a first sheathing fluid source in fluid communication with the inlet; a first flow control device, adapted to regulate a flow of a first sheathing fluid from the first sheathing fluid source; and a controller, in signal communication with the first flow control device, adapted to regulate the sheathing fluid by operating the first flow control device; wherein the inlet is adapted to receive an effluent stream from the process chamber and the first sheathing fluid from the first sheathing fluid source, to sheathe the effluent stream with the first sheathing fluid to form a sheathed effluent stream, and to introduce the sheathed effluent stream into the reactor. | 01-14-2010 |
20100061908 | Gs Abatement - Low-cost apparatus is described for treating an effluent fluid stream from a process tool. In one embodiment, the apparatus comprises an abatement device ( | 03-11-2010 |
20100074820 | XENON RETRIEVAL SYSTEM AND RETRIEVAL DEVICE - To provide a simple highly-pure Xe retrieval method and device with high retrieval efficiency by functionally removing such elements as water, CO2 and FCs from waste gases from semiconductor production processes, such as the plasma etching, that contain low-concentration Xe. For samples containing xenon and fluorocarbon, this invention is characterized by having at least first adsorption means (A | 03-25-2010 |
20100086459 | Impurity removing apparatus and method of operating the same - An impurity removing apparatus is simple in structure for removing impurities from a rare gas and enable to make the rare gas reusable. The impurity removing apparatus includes a first treatment device | 04-08-2010 |
20100178225 | METHOD FOR TREATMENT OF A GAS STREAM CONTAINING SILICON TETRAFLUORIDE AND HYDROGEN CHLORIDE - The present invention is directed to a method for treatment of a gas stream comprising silicon tetrafluoride and hydrogen chloride. For example, the present invention is directed to a method for treatment of such a gas stream that involves contacting the gas stream with a metal that reacts with the hydrogen chloride to provide a treated gas stream having reduced hydrogen chloride content. The present invention is further directed to methods for subjecting silicon tetrafluoride and hydrogen chloride-containing gas streams to elevated pressure to provide gas streams suitable for transport. | 07-15-2010 |
20100247412 | Method for Removal of CIO3F - [Object] An object of the present invention is to provide an inexpensive method for removing ClO | 09-30-2010 |
20100260654 | METHOD AND DEVICE FOR ENTRAINED-FLOW SULFATION OF FLUE GAS CONSTITUENTS - A method for entrained-flow sulfation of sulfatable flue gas constituents of an oxygen-containing flue gas in an incineration plant having at least one combustion chamber and a waste gas burnout zone includes passing the oxygen-containing flue gas through the waste gas burnout zone. The oxygen-containing flue gas is tempered by lowering a temperature of the oxygen-containing flue gas. The oxygen-containing flue gas is passed through a sufation zone so that the oxygen-containing flue gas has a temperature interval of between 700 and 900° C. during a time period of between 2 and 20 s so as to convert sulfatable flue gas constituents present in the oxygen-containing flue gas to solid sulfate-containing ash particles so as to reduce a halide concentration in ash deposits thereof. | 10-14-2010 |
20100278703 | Method to neutralize hydrogen chloride in superheated geothermal steam without destroying superheat - Hydrogen chloride in superheated steam is neutralized by contacting the steam with a solution containing potassium carbonate. A solution of potassium carbonate will remain liquid when contacted by steam superheated by as much as 40° C. and, unlike sodium carbonate, the degree of superheat of a saturated solution of potassium carbonate increases with temperature. | 11-04-2010 |
20100329956 | Exhaust gas treatment method and system - An exhaust gas treatment system treats exhaust gases collected from at least one PFC dealing device that deals with a PFC gas. The exhaust gas treatment system includes: an exhaust emission line through which the exhaust gases collected from the PFC dealing device; an external exhaust gas disposal device connected to the exhaust emission line so as to purify the exhaust gases for exhaust emission; a gas treatment device for eliminating the PFC gas from the exhaust gases; a gas treatment line branched from the exhaust emission line to supply the exhaust gases to the gas treatment device; and an intermediate line for discharge the treated exhaust gases from the gas treatment device to the external exhaust gas disposal device. | 12-30-2010 |
20110052469 | SYSTEMS AND METHODS FOR TREATING AIR STREAMS EXHAUSTED FROM FIRING KILNS - A system for treating an air stream exhausted from a firing kiln utilized to heat a ceramic substrates includes an outlet assembly and a thermal oxidizer. The outlet assembly may be in fluid communication with the firing kiln, and may be operational to receive an exhaust gas stream and a waste heat stream from the firing kiln. A temperature of the waste heat stream may be greater than the exhaust gas stream such that a temperature of an air stream comprising the waste heat stream and the exhaust gas stream within the outlet assembly is greater than the exhaust gas stream. The thermal oxidizer may be in fluid communication with the outlet assembly to receive the air stream and remove pollutants from the air stream. | 03-03-2011 |
20110158878 | METHOD AND DEVICE FOR PROCESSING EXHAUST GAS - An exhaust gas processing method of the present invention includes sequentially introducing an exhaust gas from a semiconductor manufacturing equipment to a combustion-based detoxifying device, a dust collector, and a two-stage gas cleaning device, so as to process the exhaust gas, wherein the two-stage gas cleaning device is comprised of a first-stage gas cleaning device and a second-stage gas cleaning device, and gas cleaning is performed in the first gas cleaning device that uses water as a cleaning solution and subsequently in the second gas cleaning device that uses an alkaline aqueous solution as a cleaning solution. | 06-30-2011 |
20120237423 | METHOD AND SYSTEM FOR MULTI-STAGE FLUE GAS CLEANING - Flue gas processing is described. A circulating dry flue gas desulfurization (DFGD) scrubber is positioned upstream of a wet flue gas desulfurization (WFGD) scrubber. Flue gas temperature and humidity is controlled. Reagent use is monitored and controlled. The DFGD scrubber is controlled without concern for sulfur dioxide absorption and thus reagent utilization is controlled based on the goal of removing one or more of: sulfur trioxide and/or other acid gases. In some embodiments the circulating DFGD scrubber removes the majority of sulfur trioxide, HCL, and/or HF from the flue gas stream supplied to the DFGD scrubber. The DFGD scrubber is followed by the WFGD scrubber that removes sulfur dioxide and mercury, to achieve a high degree of pollutant removal at a low operating cost as compared to some other systems. WFGD scrubber liquid waste is sent to the circulating DFGD scrubber and used for temperature and/or humidity control purposes. | 09-20-2012 |
20130004399 | PROCESS FOR DISPOSAL OF HEXACHLORODISILANE-CONTAINING VAPORS - Hexachlorodisilane and residues formed therefrom are disposed of without generating pyrophoric compositions by reaction with urea and alcohol in nonpolar solvent. | 01-03-2013 |
20130034486 | APPARATUS AND PROCESS FOR TREATMENT OF HALOORGANOSILICON COMPOUNDS FROM OFFGASES - The present invention relates to a novel apparatus in the form of a regenerator and to a process executed therein for treatment of offgases comprising impurities in the form of haloorganosilicon compounds. | 02-07-2013 |
20140241970 | Process and Apparatus for Improving the Operation of Wet Scrubbers - The description relates to improving the operation of wet scrubbers, especially those based on calcium carbonate, by reducing the quantities of soluble chlorides in the combustion gases fed to the scrubbers. By converting gaseous HCl in the combustion gases to a solid copper chloride and removing it before the chloride reaches the scrubber, the reactivity of the scrubbing slurry will be better maintained. Combustion gases are treated with an aqueous copper compound referred to as copper-bearing chloride remediator (CBCR). The process is preferably implemented by identifying locations within a combustor for feeding the CBCR, determining the physical form and injection parameters for the CBCR and injecting the CBCR under conditions effective to reduce HCl and/or sulfur oxides. Effective temperatures for introducing the CBCRs are preferably within the range of from about 250° to 900° F. Among the more preferred CBCRs are copper compositions including copper, an organic moiety and/or an ammonia moiety. One composition of this type is copper diamine diacetate, which has an empirical formula of C | 08-28-2014 |
20140314650 | Processes, Apparatus, Compositions and Systems for Reducing Emissions of HCl and/or Sulfur Oxides - The description relates to reducing emissions of HCl and sulfur oxides by treating combustion gases with an aqueous copper compound referred to as copper-based chloride remediator (CBCR). The process is preferably implemented by identifying locations within a combustor for feeding the CBCR, determining the physical form and injection parameters for the CBCR and injecting the CBCR under conditions effective to reduce HCl and/or sulfur oxides. Effective temperatures for introducing the copper-based chloride remediators are preferably within the range of from about 250° to 900° F. where the objective is to reduce HCl, while temperatures up to about 2200° F. can be employed where the objective is to reduce sulfur oxides. Among the more preferred CBCRs are copper compositions including copper and an ammonia moiety. One composition of this type that was tested was copper diammonium diacetate, which has an empirical formula of C | 10-23-2014 |
20140314651 | Process and Apparatus for Improving the Operation of Wet Scrubbers - The description relates to improving the operation of wet scrubbers, especially those based on calcium carbonate, by reducing the quantities of soluble chlorides in the combustion gases fed to the scrubbers. By converting gaseous HCl in the combustion gases to a solid copper chloride and removing it before the chloride reaches the scrubber, the reactivity of the scrubbing slurry will be better maintained. Combustion gases are treated with an aqueous copper compound referred to as copper-bearing chloride remediator (CBCR). The process is preferably implemented by identifying locations within a combustor for feeding the CBCR, determining the physical form and injection parameters for the CBCR and injecting the CBCR under conditions effective to reduce HCl and/or sulfur oxides. Effective temperatures for introducing the CBCRs are preferably within the range of from about 250° to 900° F. Among the more preferred CBCRs are copper compositions including copper, an organic moiety and/or an ammonia moiety. One composition of this type is copper diamine diacetate, which has an empirical formula of C | 10-23-2014 |
20140356269 | Recovery of Halogens by Partial Condensation - A method includes injecting a feed stream including a hydrogen halide and water into a vapor liquid separator. The feed stream has a liquid phase and a vapor phase. The method further includes separating the liquid phase and the vapor phase in the vapor liquid separator to form condensate and vapor, and discharging the condensate from the vapor liquid separator in a liquid stream. The method also includes discharging the vapor from the vapor liquid separator in a vapor stream. | 12-04-2014 |
20150110697 | METHYL IODIDE ADSORBER, USE THEREOF AND METHOD FOR THE ADSORPTION OF METHYL IODIDE - A methyl iodide adsorber, comprising a zeolite containing at least one iodide-adsorbing metal or a compound thereof, wherein the zeolite is a hydrophobic zeolite. Also, a use of the adsorber and a method for the adsorption of methyl iodide. | 04-23-2015 |
20150299011 | METHOD FOR BREAKDOWN OF TOXIC ORGANIC COMPOUNDS CONTAINED IN WASTEWATERS AND/OR WASTE GASES - A method is disclosed for breaking down toxic organic compounds contained in wastewaters and/or waste gases, in which the wastewaters and/or waste gases loaded with toxic organic compounds are first passed into an aqueous basic alkali/alkaline earth solution/suspension bath for destabilization of the toxic organic compounds and then the solution/suspension bath containing the destabilized toxic organic compounds is fed in ascending fashion into a capillary mass arranged above the bath, consisting of a mixture of pulps and peat mixed with bentonite, zeolite and/or lime with a particle size <200 μm. | 10-22-2015 |
20160016113 | Reducing Hydrochloric Acid in Cement Kilns - The description relates to reducing hydrochloric acid in cement kilns. In one aspect, an aqueous copper-based chloride remediator is introduced into contact with combustion gases from a cement kiln. Injection is made into a defined introduction zone under conditions effective for HCl emissions control wherein the temperature is within the range of from 300° F. to 800° F., preferably from 550° F. to 750° F. The resulting d gases are discharged from the defined zone following sufficient reaction time to reduce the HCl concentration in the gases. | 01-21-2016 |
20160082388 | DEVICE AND PROCESS FOR FLUORINE RECOVERY FROM SMOKE AFTER PHOSPHORUS ABSORPTION BY HYDRATION IN KILN PROCESS FOR PRODUCTION OF PHOSPHORIC ACID - A device and process for fluorine recovery from smoke after phosphorus absorption by hydration in KPA, wherein the device comprises a first-stage and second-stage fluorine absorption tower, which are both fluidised counter-current washing towers. The device according to the present invention has simple structure, low investment cost, high raw material utilization rate, and good fluorine recovery effects. | 03-24-2016 |
20160089630 | VACUUM FORELINE REAGENT ADDITION FOR FLUORINE ABATEMENT - Embodiments disclosed herein include an abatement system for abating compounds produced in semiconductor processes. The abatement system includes a foreline having a first end configured to couple to an exhaust port of a vacuum processing chamber, and an injection port is formed in the foreline. The abatement system further includes a scrubber coupled to a second end of the foreline. There is no effluent burner or plasma source interfaced with the foreline between the first end and the scrubber. Low temperature steam is injected into the foreline through the injection port to abate the PFCs flowing out of the vacuum processing chamber. | 03-31-2016 |
20160158696 | TREATMENT PROCESS OF PHOSPHOROUS PENTAFLUORIDE - A treatment process of PF | 06-09-2016 |
20090022642 | Treatment method for decomposing perfluorocompound, decomposing catalyst and treatment apparatus - An object of the present invention is to improve the decomposition at low temperatures of perfluorocompounds containing only fluorine as a halogen, such as CF | 01-22-2009 |
20090060811 | Wide Mesoporous Alumina Composites Having Trimodal Pore Structure - Wide mesoporous alumina composites are produced by an “in situ reaction” route comprising agglomeration of an alumina powder that is capable of rehydration together with a second reactive powder such as carbonate. In one method of production, the powders are fed to a rotating forming device that is continuously sprayed with liquid under conditions to form particulates. The discharging beads are then subjected to curing and thermal activation to produce the final catalyst or adsorbent. The alumina participates in a pore altering process involving the carbonate component upon formation of hydroxycarbonate intermediates such as Dawsonite. Large fraction of the pore volume of the final product consists of wide mesopores in the 15-50 nanometers range. The alumina composites exhibit a characteristic trimodal pore structure that includes also small micro-meso pores and macropores larger than 200 nanometers. | 03-05-2009 |
20090092530 | METHOD FOR TREATMENT OF A GAS STREAM CONTAINING SILICON TETRAFLUORIDE AND HYDROGEN CHLORIDE - The present invention is directed to a method for treatment of a gas stream comprising silicon tetrafluoride and hydrogen chloride. For example, the present invention is directed to a method for treatment of such a gas stream that involves contacting the gas stream with a metal that reacts with the hydrogen chloride to provide a treated gas stream having reduced hydrogen chloride content. The present invention is further directed to methods for subjecting silicon tetrafluoride and hydrogen chloride-containing gas streams to elevated pressure to provide gas streams suitable for transport. | 04-09-2009 |
20090155154 | APPARATUS FOR DECOMPOSING SUFLUR-FLUORINE-CONTAINING COMPOUND AND METHOD THEREOF - The invention provides a method for decomposing sulfur-fluorine-containing compound and apparatus thereof. Sulfur-fluorine-containing compound is decomposed in two steps, comprising contacting the compound with a first catalyst such as a monometallic catalyst and a second catalyst such as a bimetallic catalyst, and at a low reaction temperature to produce resulting compounds capable of water-solubility. Then, the resulting compounds, namely sulfur- or fluorine-containing compounds, are removed by washing. | 06-18-2009 |
20090232719 | Apparatus for treating a gas stream - Apparatus for treating a gas stream comprises a plurality of cylindrical proton conducting membranes. The gas stream is conveyed through the bore of each cylindrical membrane, and a hydrogen-containing gas is conveyed about the external surface of each cylindrical membrane. A catalyst provided on the inner side of each membrane catalyses a reaction between a halogen-containing component of the gas stream, such as CF | 09-17-2009 |
20100074821 | APPARATUS AND METHOD FOR TREATING A GAS STREAM - Apparatus for treating a gas stream comprises a nonthermal plasma reactor, for example a dielectric barrier discharge plasma reactor ( | 03-25-2010 |
20110044874 | Oxidation Catalyst and Method for Destruction of CO, VOC and Halogenated VOC - An oxidation catalyst deposited on a substrate is described for the destruction of CO and volatile organic compounds, in particular halogenated organic compounds, from an emissions stream at temperatures from 250° C. to 450° C. The oxidation catalyst includes at least two platinum group metals, one of which is either platinum or ruthenium, supported on refractory oxides, such as a solid solution of CeO | 02-24-2011 |
20110064637 | Process for the joint production of sodium carbonate and sodium bicarbonate - Process for the joint production of sodium carbonate and sodium bicarbonate crystals, according to which: a solid powder derived from sodium sesquicarbonate, having a mean particle diameter comprised between 0.1 and 10 mm is dissolved in water; the resulting water solution is introduced into a crystallizer, wherein a first water suspension comprising sodium carbonate crystals is produced; the first water suspension is subjected to a separation, in order to produce crystals comprising sodium carbonate on the one hand, which are valorized, and a mother liquor on the other hand; and a part of the mother liquor is taken out of the crystallizer and put into contact in, a gas liquid contactor, with a gas comprising carbon dioxide, in order to produce a second water suspension comprising sodium bicarbonate crystals, which are separated and valorized. A reagent powder comprising sodium bicarbonate crystals made by such process. | 03-17-2011 |
20110123422 | Flue Gas Scrubbing - Herein is disclosed a flue gas scrubbing composition, a method of using the flue gas scrubbing composition, and a method of entombing mercury collected with the flue gas scrubbing composition. The flue gas scrubbing composition includes an admixture of a mercury sorbent material that comprises a clay, copper, and sulfur; and lime that comprises calcium oxide and/or calcium hydroxide. The method of collecting mercury from a flue gas includes injecting the flue gas scrubbing composition of any one of the preceding claims into a flue duct comprising the flue gas; reacting the mercury sorbent material with mercury in the flue gas to form a mercury-sorbed material and thereby reducing the concentration of mercury in the flue gas; reacting the lime with SO | 05-26-2011 |
20110135553 | Milling process - Process for milling a substance selected from the group consisting of sodium carbonate, sodium bicarbonate, sodium sesquicarbonate, and trona, in which the substance is milled with a cleaning agent in a mill for the purpose of obtaining a powder with a mean diameter of less than 100 μm and of inhibiting the formation of incrustations in the mill. In a process for scrubbing a flue gas contaminated by a volatile acid compound, the powder is injected in the flue gas. | 06-09-2011 |
20110268639 | METHOD AND A DEVICE FOR VERIFYING AND CONTROLLING THE REMOVAL OF HYDROGEN FLUORIDE FROM A PROCESS GAS - A gas cleaning system ( | 11-03-2011 |
20120251423 | Methods For Reducing The Acidic Gas Content of Effluent Gases - Methods for reducing the acidic gas content of effluent gas streams are disclosed. The methods generally involve reducing the acidic gas content of combustion gases passing through a duct by injecting hydrated lime or pulverized quicklime into the duct by use of a shrouded injector which reduces the incidence of occlusion of the injector. | 10-04-2012 |
20120308461 | Crosslinked Polymer-Carbon Sorbent for Removal of Heavy Metals, Toxic Materials and Carbon Dioxide - A polymer-carbon sorbent for removing carbon dioxide, heavy metals and toxic materials from a flue gas from a combustion process, such as coal-fired power plants, is described. The sorbent comprises a carbonaceous sorbent material and a cured amine-containing polymer, and sulfur. The polymer-carbon sorbents are formed by curing a curable amine-containing polymer in the presence of the carbonaceous sorbent material, sulfur, a cure accelerator and, optionally, a cure activator. A convenient carbonaceous sorbent material is an activated carbon, and a convenient curable amine-containing polymer is an allyl-containing poly(ethyleneimine), having a number average molecular weight between about 1,000 and about 10,000. The polymer-carbon sorbents may contain sulfur in excess of an amount needed to cure the curable amine-containing polymer. Such polymer-carbon sorbents are shown to capture more mercury, in both elemental an ionic forms, compared to activated carbon and adsorb carbon dioxide. | 12-06-2012 |
20130045150 | CATIONIC FIBERS HOSTING REACTIVE PEROXYGENATED RADICALS, AND METHODS OF MAKING AND USING THEM - Disclosed are reactive fibers having a polycationic exterior surface to which multivalent peroxy anions are bound. The use of such fibers, mats of such fibers, and filters of such fibers, as well as methods of treating fluid streams, and rejuvenating such fibers, mats and filters are also disclosed. | 02-21-2013 |
20130089484 | SILICA CONTAINING BASIC SORBENT FOR ACID GAS REMOVAL - An acid gas sorbent composition is disclosed. The composition comprises a compound having the following formula: (SiO | 04-11-2013 |
20130095018 | UP-FLOW FLUIDIZED BED DRY SCRUBBER AND METHOD OF OPERATING SAME - An up-flow fluidized bed dry scrubber and a method of operating same. The scrubber includes up-flow reactors. The reactors receive an exhaust gas flow containing pollutants and each reactor includes one or more spray lances that inject a dry, powdered sorbent into the flow vertically onto material dispersion assemblies installed in the reactor and one or more dual-fluid spray lances with multiple spray nozzles that introduce humidification water into the flow in the reactor. The sorbent and the humidification water combine to create a fluidized sorbent bed in the flow when the flow is sufficient to suspend the fluidized sorbent bed in the reactor, in which pollutants react with the sorbent in the bed and are removed from the gas as the gas flows through the bed in the reactor. | 04-18-2013 |
20130280154 | APPARATUS AND METHOD FOR TREATING PERFLUORO-COMPOUND - The present invention discloses an apparatus and method for treating perfluoro-compounds (PFCs). The method for treating PFCs includes: (a) decomposing PFCs and eliminating a first acid gas generated by the decomposition through a pre-cleaner; (b) filtering out dust particles from the exhaust gas through a filter; (c) electrifying the dust particles in the exhaust gas by electrical discharge and collecting dusts through a dust collector; (d) decomposing PFCs using a regenerative/catalytic reaction through a catalytic reactor; (e) eliminating a second acid gas generated by the regenerative/catalytic reaction through a post-cleaner; and (f) letting the purified exhaust gas out through a fan. | 10-24-2013 |
20130336868 | Dry Processes, Apparatus, Compositions and Systems for Reducing Sulfur Oxides and HCl - Dry processes, apparatus, compositions and systems are provided for reducing emissions of sulfur oxides, and sulfur dioxide in particular, and/or HCl in a process employing a combination of a dolomite hydrate sorbent and a sorbent doping agent administered to achieve coverage of a three-dimensional cross section of a passage carrying SO | 12-19-2013 |
20130343977 | CONTINUOUS DIFFUSION DENUDING WITH MOVING DENUDING SURFACE - A duct can be configured to receive a denuding gas flow. A solid denuding surface that is connected to a drive system can be configured to move the solid denuding surface within the duct while the solid denuding surface is continuously concentrating one or more gas-phase species from the denuding gas flow on the denuding surface. Also, a denuding gas flow can be passed along a denuding surface to concentrate one or more gas phase species from the denuding gas flow onto the denuding surface with a diffusion denuding action. The denuding surface can be moved while continuing to concentrate the one or more gas phase species from the denuding gas flow onto the denuding surface. | 12-26-2013 |
20150110698 | Process for Sulfur Dioxide, Hydrochloric Acid and Mercury Mediation - Dry processes, apparatus, compositions and systems are provided for reducing emissions of sulfur oxides, and sulfur dioxide in particular, and/or HCl and/or Hg in a process employing a combination of a lime-based sorbent, in particular hydrated lime and/or dolomitic hydrated lime, and a sorbent doping agent administered to achieve coverage of a three-dimensional cross section of a passage carrying SO | 04-23-2015 |
20160030914 | GRANULAR MATERIAL FOR ABSORPTION OF HARMFUL GASES AND PROCESS FOR PRODUCTION THEREOF - A granular sorption material including a plurality of porous granules formed by buildup agglomeration for separation, especially absorption, of harmful gases, especially of SO | 02-04-2016 |
20160101384 | DEVICE AND A METHOD OF CLEANING AN EFFLUENT GAS FROM AN ALUMINIUM PRODUCTION ELECTROLYTIC CELL - A gas cleaning unit for cleaning an effluent gas of at least one aluminium production electrolytic cell comprises a contact reactor in which the effluent gas is brought into contact with alumina, and a dust removal device for removing at least a portion of the alumina. The gas cleaning unit further comprises a wet scrubber in which the effluent gas is brought into contact with an absorption liquid containing water for removing further pollutants from the effluent gas. The wet scrubber is positioned at a point vertically higher than that of the dust removal device. | 04-14-2016 |
20160166986 | METHOD FOR PURIFICATION OF OFF-GAS AND DEVICE FOR THE SAME | 06-16-2016 |
20160175774 | PROCESS FOR ADSORBING HYDROGEN CHLORIDE FROM A REGENERATOR VENT GAS | 06-23-2016 |
20160175775 | PROCESS FOR ADSORBING HYDROGEN CHLORIDE FROM A REGENERATION VENT GAS | 06-23-2016 |