| Entries |
| Document | Title | Date |
|---|
| 20080213148 | Emission Control System - Methods and apparatus utilizing chlorine dioxide and hydrogen peroxide are useful to reduce NOx emissions, as well as SOx and mercury (or other heavy metal) emissions, from combustion flue gas streams. | 09-04-2008 |
| 20080241032 | Catalyzing Lean NOx Filter and Method of Using Same - A NOx trapping filter is provided for use in emission control systems, for example, on the exhaust gas from an internal combustion engine. The NOx trapping filter has a substrate constructed using bonded fiber structures, which cooperate to form a highly uniform open cell network, as well as to provide a uniform arrangement of pores. The substrate typically is provided as a wall-flow honeycomb structure, and in one example, is manufactured using an extrusion process. In this way, the substrate has many channel walls, each having an inlet surface and an outlet surface. The inlet surface has a uniform arrangement of pores that form a soot capture zone, where soot and other particulate matter is captured from an exhaust gas. A NOx adsorber material is disposed in the filter to trap NOx during lean operation of the engine. A NOx conversion catalyst is also disposed inside the channel wall, where NOx and excess hydrocarbons in the exhaust gas are reacted to less harmful substances when the engine system is operated in a rich condition. Because of the uniform pore structure and open cell arrangement inside the channel wall, the filter is capable of being heavily loaded with catalyst, adsorber, while avoiding undue increase in backpressure to the internal combustion engine. | 10-02-2008 |
| 20080279739 | MERCURY REMOVAL SORBENT - A composition comprising a vanadium oxide compound and an alkali metal promoter loaded onto a porous support material is disclosed. Methods of making and using the composition to remove heavy metals or heavy metal containing compounds from a fluid stream are also provided. Such methods are particularly useful in the removal of mercury and mercury compounds from flue gas streams produced from the combustion of hydrocarbon-containing materials such as coal and petroleum fuels. | 11-13-2008 |
| 20090028767 | Waste Treatment and Energy Production Utilizing Halogenation Processes - A method for generating energy and/or fuel from the halogenation of a carbon-containing material and/or a sulfur-containing chemical comprises supplying the carbon-containing material (e.g., coal, lignite, biomass, cellulose, milorganite, methane, sewage, animal manure, municipal solid waste, pulp, paper products, food waste) and/or the sulfur-containing chemical (e.g., H | 01-29-2009 |
| 20090092529 | SYSTEMS AND METHODS FOR REMOVING GASEOUS POLLUTANTS FROM A GAS STREAM - Horizontal gas-liquid scrubbing systems and associated gas scrubbing methodologies are provided. In one embodiment, a horizontal duct scrubbing system includes a horizontally disposed housing having a waste gas inlet and a treated gas outlet, a liquid inlet manifold disposed within the horizontally disposed housing, the liquid inlet manifold comprising a plurality of nozzles oriented to spray a scrubbing liquor co-current to the flow of a gas stream flowing through the horizontally disposed housing, and a demister located proximal the treated gas outlet, where the horizontally disposed housing is substantially free of flow deflection members between the liquid inlet manifold and the demister. The gas stream may include sulfur dioxide, and the system may be capable of removing at least 71 vol. % sulfur dioxide from the gas stream. | 04-09-2009 |
| 20090148370 | Process to produce ammonia from urea - In a process for generating ammonia from urea which process comprises:
| 06-11-2009 |
| 20090148371 | Two-Stage Quench Scrubber - Contemplated configurations and methods for flue gas treatment comprise a quench section and a scrubbing section that are configured and operated to avoid net condensation of water from the quenched flue gas in the scrubbing section. Consequently, the active agent in the scrubbing medium can be maintained at high concentration and will so allow continuous removal of SOX and NOX to very low concentrations. Moreover, as the scrubbing medium is not diluted by condensate, loss of active agent can be substantially reduced. Especially preferred systems will reduce SO2 concentrations in flue gas to less than 5 ppm, and more typically less than 3 ppm while substantially reducing water and reagent consumption | 06-11-2009 |
| 20090169453 | Device and method for processing cement kiln combustion exhaust - A combustion exhaust gas processing device to efficiently remove harmful substances such as dust, NOx, persistent organic pollutants, a volatile organic compound and CO in cement kiln combustion exhaust gas, thereby holding down facility cost and operating cost low. The combustion exhaust gas processing device | 07-02-2009 |
| 20090196810 | Systems and Methods for On-Site Selective Catalytic Reduction - A selective catalytic reduction (SCR) system includes an on-board ammonia generation system that produces nitrogen from air and hydrogen from a source of a hydrogen-containing compound, and generates an ammonia product from the nitrogen and hydrogen to provide the ammonia product into an exhaust from a NO | 08-06-2009 |
| 20090208395 | PROCESS AND APPARATUS FOR REDUCING NITROGEN OXIDES AND HALOGENATED ORGANIC COMPOUNDS IN INCINERATION PLANTS - A process for reducing nitrogen oxides and halogenated organic compounds in an incineration plant having at least one combustion chamber. The process comprises separating out fly ash using a dust collector. Water is added to and hydrochloric acid separated out in a first acid-operated scrubber. Water and ammonia are added so as to separate out sulphur dioxide in a second neutral or slightly acid-operated scrubber so as to form ammonium sulphite, a portion of the ammonium sulphite thereby reacts with oxygen so as to form an aqueous ammonium sulphate/ammonium sulphite solution. The aqueous ammonium sulphate/ammonium sulphite solution is introduced into an oxygen-containing smoke gas downstream of a secondary gas introduction area so as to decompose the ammonium sulphate and ammonium sulphite so as to form ammonia and sulphur dioxide. Ammonia, oxygen and nitrogen oxides are reduced in the smoke gas by selective non-catalytic reduction so as to produce nitrogen and water, the chloride-containing fly ash in the smoke gas reacting with sulphur dioxide, water and oxygen so as to produce sulphates and hydrochloric acid. | 08-20-2009 |
| 20090252665 | ENHANCEMENT OF CONVENTIONAL SCR AND SNCR PROCESSES WITH AMMONIA DESTRUCTION CATALYST - An apparatus and method for achieving increased NO | 10-08-2009 |
| 20090297415 | Method For Operating A Nitrogen Oxide Storage Catalyst In A Diesel Engine - A nitrogen oxide storage catalytic converter which is operated for a relatively long time at low exhaust-gas temperatures in the range between 120 and 250° C. exhibits a decreasing storage capacity as a result of incomplete regeneration at said temperatures. In order to re-establish the original storage capacity of the catalytic converter which is operated in this way, two-stage regeneration is proposed, wherein the storage catalytic converter is initially partially regenerated at the low exhaust gas temperature by means of a switch from the lean mode to the rich mode, and wherein subsequently, with rich exhaust gas again, the exhaust-gas temperature of the engine is raised into a range of between 300 and 400° C. for complete regeneration. | 12-03-2009 |
| 20100040524 | SCRUBBER FOR REMOVING POLLUTANTS FROM FLUE GAS - A scrubber for scrubbing at least one pollutant from flue gas includes a first stage configured to provide a chemical oxidant to a stream of flue gas, and a second stage configured to provide a chemical or chemicals to the stream of flue gas, a scrubbing medium recirculation feature configured to continuously recirculate a slurry used in the second stage, and a by-product processing portion configured to remove a by-product from a stream of slurry withdrawn from the scrubber. The by-product includes reaction products of at least one pollutant. | 02-18-2010 |
| 20100158778 | APPARATUS FOR PURIFYING AIR AND PURIFYING METHOD THEREOF - An air purifying apparatus includes an air flow generating device for generating a flow of air, a nozzle spraying water to the air flowing through the air flow generating device, a plasma module performing a plasma reaction on the air containing the water sprayed from the nozzle, and oxidizing NOx in the air and converting it into NO | 06-24-2010 |
| 20100189618 | DYNAMIC CONTROL OF SELECTIVE NON-CATALYTIC REDUCTION SYSTEM FOR SEMI-BATCH-FED STOKER-BASED MUNICIPAL SOLID WASTE COMBUSTION - The present invention controls reagent flow levels in a selective non-catalytic reduction (SNCR) system by more accurately predicting Nitrogen Oxides (NOx) production with a municipal waste combustor. In one embodiment, the reagent levels correspond with measured furnace temperatures. The reagent levels may have a baseline level from prior measured NOx that is then modified according to temperatures measurements. A slow controller may use NOx measurements over an extended period to define a base regent level, and a fast controller may use additional information such as the furnace temperature to modify the base regent level. The fast controller may further receive two additional signals that are added individually or together to maximize NOx control while minimizing ammonia slip from the reagent. The two signals are a feed-forward signal from the combustion controller and a feedback signal from an ammonia analyzer downstream of the combustion zone. | 07-29-2010 |
| 20100254870 | AQUEOUS PHASE OXIDATION PROCESS - An improved oxidization process may be used to oxidize a wide variety of feedstocks. Oxidation takes place in a reactor where the feedstock is mixed with an oxidizing acid, such as nitric acid. The reaction mixture may also include a secondary oxidizing acid such as sulfuric acid as well as water and/or dissolved and mechanically mixed oxygen gas. The reactor may be maintained at an elevated pressure such as at least approximately 2070 kPa or desirably at least approximately 2800 kPa. The temperature of the reaction mixture may be maintained at no more than 210° C. In the various embodiments described herein, the process may include: combining recycled effluent from the reactor with the feedstock, combining one or more oxidizing acids with the feedstock, comminuting the feedstock to reduce the size of the particles, feeding the feedstock into the high pressure reactor at an approximately constant feed rate, dispersing oxygen gas from the headspace of the reactor into the reaction mixture, and/or removing all or almost all of the gas from the reactor through the liquid effluent. | 10-07-2010 |
| 20100254871 | AQUEOUS PHASE OXIDATION PROCESS - An improved oxidization process may be used to oxidize a wide variety of feedstocks. Oxidation takes place in a reactor where the feedstock is mixed with an oxidizing acid, such as nitric acid. The reaction mixture may also include a secondary oxidizing acid such as sulfuric acid as well as water and/or dissolved and mechanically mixed oxygen gas. The reactor may be maintained at an elevated pressure such as at least approximately 2070 kPa or desirably at least approximately 2800 kPa. The temperature of the reaction mixture may be maintained at no more than 210° C. In the various embodiments described herein, the process may include: combining recycled effluent from the reactor with the feedstock, combining one or more oxidizing acids with the feedstock, comminuting the feedstock to reduce the size of the particles, feeding the feedstock into the high pressure reactor at an approximately constant feed rate, dispersing oxygen gas from the headspace of the reactor into the reaction mixture, and/or removing all or almost all of the gas from the reactor through the liquid effluent. | 10-07-2010 |
| 20100254872 | AQUEOUS PHASE OXIDATION PROCESS - An improved oxidization process may be used to oxidize a wide variety of feedstocks. Oxidation takes place in a reactor where the feedstock is mixed with an oxidizing acid, such as nitric acid. The reaction mixture may also include a secondary oxidizing acid such as sulfuric acid as well as water and/or dissolved and mechanically mixed oxygen gas. The reactor may be maintained at an elevated pressure such as at least approximately 2070 kPa or desirably at least approximately 2800 kPa. The temperature of the reaction mixture may be maintained at no more than 210° C. In the various embodiments described herein, the process may include: combining recycled effluent from the reactor with the feedstock, combining one or more oxidizing acids with the feedstock, comminuting the feedstock to reduce the size of the particles, feeding the feedstock into the high pressure reactor at an approximately constant feed rate, dispersing oxygen gas from the headspace of the reactor into the reaction mixture, and/or removing all or almost all of the gas from the reactor through the liquid effluent. | 10-07-2010 |
| 20110033359 | COOLED NAOH FLUE GAS SCRUBBING PRIOR TO CO2 REMOVAL - In a process for removing pollutants from a flue gas stream ( | 02-10-2011 |
| 20110044872 | FLUE GAS CONTROL SYSTEM OF COAL COMBUSTION BOILER AND OPERATING METHOD THEREOF - A flue gas control system of a coal combustion boiler according to the present invention includes: an HCI atomizer ( | 02-24-2011 |
| 20110097253 | FLUORINE PURIFICATION - A method producing a volume of purified F | 04-28-2011 |
| 20110135552 | METHODS AND APPARATUS FOR TREATING EXHAUST GAS IN A PROCESSING SYSTEM - Methods and apparatus for treating an exhaust gas in a foreline of a substrate processing system are provided herein. In some embodiments, an apparatus for treating an exhaust gas in a foreline of a substrate processing system includes a plasma source coupled to a foreline of a process chamber, a reagent source coupled to the foreline upstream of the plasma source, and a foreline gas injection kit coupled to the foreline to controllably deliver a gas to the foreline, wherein the foreline injection kit includes a pressure regulator to set a foreline gas delivery pressure setpoint, and a first pressure gauge coupled to monitor a delivery pressure of the gas upstream of the foreline. | 06-09-2011 |
| 20110142739 | MULTI-COMPARTMENT OVERFIRE AIR AND N-AGENT INJECTION METHOD AND SYSTEM FOR NITROGEN OXIDE REDUCTION IN FLUE GAS - A method of decreasing a concentration of nitrogen oxides in a combustion gas flowing through a vessel including: generating a flue gas in a combustion zone of the vessel, the flue gas containing nitrogen oxides and carbon monoxide; providing overfire air into a burnout zone of the vessel from a first injector of overfire air to oxidize at least some of the carbon monoxide in the flue gas; injecting a selective reducing agent concurrent with overfire air at a level in the burnout zone downstream of the first injector of overfire air and downstream of the oxidization of the carbon monoxide, and reacting the selective reducing agent with the flue gas to reduce the nitrogen oxides. | 06-16-2011 |
| 20110189068 | SYSTEM FOR TREATING A GAS STREAM - A system for treating a gas stream containing nitrogen oxides (NO | 08-04-2011 |
| 20110206587 | Method for the Separation of NOx from a Gas Stream Containing Epoxy - A method is provided for separation of nitrogen oxides (NO | 08-25-2011 |
| 20110243823 | Selective Catalytic Reduction Via Electrolysis of Urea - A method and apparatus for producing ammonia suitable for use as a reductant in a selective catalytic reduction (SCR), a selective non-catalytic reduction (SNCR), or a flue gas conditioning system is provided. A method for treating combustion exhaust gas with ammonia is provided that includes the electrolytic hydrolysis of urea under mild conditions. The electrolysis apparatus includes an electrolytic cell, which may be operatively coupled to an exhaust gas treatment system to provide an apparatus for reducing nitrogen oxides (NO | 10-06-2011 |
| 20110262331 | AIR POLLUTION CONTROL SYSTEM AND AIR POLLUTION CONTROL METHOD - An air pollution control system | 10-27-2011 |
| 20110262332 | Apparatus and Method for the Treatment of Gas - An apparatus for the decomposition of a gaseous agent in exhaled air from patients, comprising a gas flow line along which there is a) an inlet arrangement, b) a decomposition unit with a chamber for decomposition of the agent, and c) an outlet arrangement. The characteristic feature is the presence of a gas regulating arrangement comprising a) a gradually adjustable function, e.g. a blower, for adjusting the flow through the chamber, and b) an optional by-pass valve function permitting adjustment of the gas pressure upstream of the adjustable function. An apparatus of the same kind as in the first sentence of the previous paragraph in which the chamber is combined with a regenerative heat exchanger preferably equipped with a puff filter. Methods are also claimed. | 10-27-2011 |
| 20110268637 | AIR POLLUTION CONTROL SYSTEM AND AIR POLLUTION CONTROL METHOD - An air pollution control system | 11-03-2011 |
| 20110274605 | PROCESS AND DEVICE FOR SIMULTANEOUSLY DESULFURIZING AND DENITRATING THE FLUE GAS WITH THE SEAWATER - A process for simultaneously desulfurizing and denitrating the flue gas with seawater includes the following steps: 1) catalytically scrubbing the flue gas containing SO | 11-10-2011 |
| 20110300046 | METHOD FOR REMOVING IMPURITIES FROM GAS FLOWS COMPRISING OXYGEN - A process for removing impurities, in particular oxides of sulphur (SO | 12-08-2011 |
| 20110311423 | PROCESSING OF OFF-GAS FROM WASTE TREATMENT - Waste treatment comprises heating it in a chamber to effect pyrolysis of the waste, introducing oxygen into the chamber to effect combustion of the pyrolyzed waste, and contacting off-gas from the pyrolysis and/or combustion steps with an oxidation catalyst to convert carbon monoxide and hydrocarbons in the off-gas into carbon dioxide and water and with a reduction catalyst to convert nitrous oxides to nitrogen and oxygen. Thus, domestic waste is treated in a batch process using catalytic converters to reduce the level of toxic components before off-gas reaches the atmosphere. | 12-22-2011 |
| 20110311424 | BIOMASS BOILER SCR NOx AND CO REDUCTION SYSTEM - A selective catalytic reduction system and method for reducing nitrogen oxide (NO | 12-22-2011 |
| 20110318247 | PROCESS FOR PURIFYING A FLOW OF COMBUSTION FUMES FROM A CLINKER PRODUCTION PLANT AND RELATIVE APPARATUS - The present invention concerns a process for purifying a flow of combustion fumes from a clinker production plant comprising the following operating steps: a) removing dust at a temperature comprised between 250 and 400° C. from a flow of combustion fumes exiting from a suspension preheater with formation of a flow of combustion fumes free of dust; b) carrying out on said flow of combustion fumes free of dust a selective catalytic NO | 12-29-2011 |
| 20120009105 | Handling of Acids from Compressed Oxyfuel-Derived CO2 - Sulfur dioxide (SO | 01-12-2012 |
| 20120009106 | Integration of Catalytic CO2 Oxidation and Oxyfuel Sour Compression - Sulfur dioxide (SO | 01-12-2012 |
| 20120009107 | SORBENT USE WITH OXYFUEL SOUR COMPRESSION - Sulfur dioxide (SO | 01-12-2012 |
| 20120045379 | METHOD FOR STORING AND DELIVERING AMMONIA FROM SOLID STORAGE MATERIALS USING A VACUUM PUMP - In a method of storing and releasing gaseous ammonia from solid storage materials a first solid storage material ( | 02-23-2012 |
| 20120058033 | METHOD FOR CATALYTIC TREATING PERFLUOROCOMPOUND GAS INCLUDING PARTICLE REMOVING UNIT - The present invention relates to a method for treating fluoro-containing and silicon-containing gas. The method comprises treating the gas with thermal-treating, particles-treating, catalyst-treating, and acid-removing sequentially to remove perfluorocompounds. The invention achieves results of reducing the working temperature, increasing the lifetime of the catalyst, reducing the operating cost of the system, and increasing the applications of the catalyst in the aspect of fluoride-containing gas, silicon-containing gas and particles containing gas treatment by sequential treating. | 03-08-2012 |
| 20120070354 | SCRUBBING A GAS CONTAINING NITROGEN OXIDES - The invention relates to a method for removing nitrogen monoxide (NO) and nitrogen oxides (NOx with x>1) from a gas stream, implementing a device including a catalytic bed for converting a portion at least a part of the NO into NOx with x>1, and a unit for reducing the NOx with x>1, and in which the gas stream is placed into contact with the catalytic bed before entering the unit for reducing the NOx with x>1. | 03-22-2012 |
| 20120082605 | EXHAUST TREATMENT SYSTEM AND METHOD OF OPERATION - An exhaust treatment method is provided. Method of increasing activation of NOx reduction catalyst using two or more reductant is discussed. The NOx catalyst is disposed to receive both the exhaust stream and reductant stream. The sensor is disposed to sense a system parameter related to carbon loading of the catalyst and produce a signal corresponding to the system parameter. The controller is disposed to receive the signal and to control dosing of the reductant stream based at least in part on the signal. The method includes sensing a system parameter related to carbon loading of a catalyst, producing a signal corresponding to the system parameter and sending the signal to a controller; and controlling a dosing of a reductant stream based at least in part on the signal. | 04-05-2012 |
| 20120141345 | High Efficiency reactor and process - The invention includes an apparatus and process for the catalytic production of HCN from a feed gas of ammonia and a hydrocarbon gas by means of heat tubes supplying heat to the feed gas stream and heat tubes for removal of heat from the products. The invention further includes a process for N | 06-07-2012 |
| 20120141346 | COMBUSTION FLUE GAS NOx TREATMENT - Combustion flue gas containing NO | 06-07-2012 |
| 20120189520 | Activation of Reactive Compound with Catalyst - Concentrated aqueous hydrogen peroxide or another reactive compound in a liquid carrier is activated by atomization and contact with a suitable catalyst that is concurrently atomized in a carrier liquid. Concentrated hydrogen peroxide and a hydrogen peroxide activation catalyst are atomized into a droplet spray for catalytic activation of the hydrogen peroxide in this invention, useful for treatment of a combustion flue gas containing contaminants such as NO | 07-26-2012 |
| 20120219485 | ADDITIVE TO UREA SOLUTIONS - Use of compounds from the class of compounds C | 08-30-2012 |
| 20120219486 | METHOD AND DEVICE FOR TREATING AMMONIA IN GASIFICATION SYSTEM - Ammonia off-gas | 08-30-2012 |
| 20120230898 | CONTROL SYSTEM FOR NOX REMOVAL DEVICE, NOX REMOVAL DEVICE PROVIDED WITH THE SAME, BOILER PLANT PROVIDED WITH THE SAME, AND METHOD OF CONTROLLING NOX REMOVAL DEVICE - A control system of a NOx removal device is provided with reagent introducing means for introducing a reagent into a fluid, a temperature measuring device that measures a temperature distribution of the fluid, a reagent-concentration calculating portion that calculates a concentration distribution of the reagent introduced into the fluid with the temperature distribution determined at the temperature measuring device, a reagent-flow-rate determining portion that determines a flow rate of the reagent that the reagent introducing means introduces in accordance with the concentration distribution calculated at the reagent-concentration calculating portion, and a reagent-introducing-means control portion that controls the reagent introducing means so as to introduce the reagent into the fluid at the flow rate determined at the reagent-flow-rate determining portion. | 09-13-2012 |
| 20120237422 | METHOD AND PLANT FOR FLUE GAS DE-NOXING - The invention relates to a method for depleting nitrogen oxides from an oxygen-containing gas stream. The gas stream is brought into contact with a scrubbing solution containing ammonia and ammonium sulphite in a NO | 09-20-2012 |
| 20120315205 | METHOD AND DEVICE FOR PURIFYING EXHAUST GASES - The invention relates to a regenerative thermal postcombustion plant ( | 12-13-2012 |
| 20130004395 | PROCESSES AND APPARATUSES FOR OXIDIZING ELEMENTAL MERCURY IN FLUE GAS USING OXYCHLORINATION CATALYSTS - Processes for decreasing elemental mercury in flue gas stream are provided. The processes include receiving the flue gas stream containing elemental mercury in an oxidation zone and maintaining the oxidation zone at a temperature of less than about 200° C. In the oxidation zone, the flue gas stream is contacted with an oxychlorination catalyst. As a result, the elemental mercury is oxidized to create oxidized mercury in an oxidized flue gas. The oxidized mercury is then removed from the oxidized flue gas. | 01-03-2013 |
| 20130004396 | PROCESSES AND APPARATUSES FOR ELIMINATING ELEMENTAL MERCURY FROM FLUE GAS USING DEACON REACTION CATALYSTS AT LOW TEMPERATURES - Processes for decreasing elemental mercury in flue gas stream are provided. The processes include receiving the flue gas stream containing elemental mercury in an oxidation zone and maintaining the oxidation zone at a temperature of less than about 200° C. In the oxidation zone, the flue gas stream is contacted with a Deacon reaction catalyst. As a result, the elemental mercury is oxidized to create oxidized mercury in an oxidized flue gas. The oxidized mercury is then removed from the oxidized flue gas. | 01-03-2013 |
| 20130011316 | STRONTIUM CHLORIDE EXPANSIVE DISKS AND COMPRESSION WELDED CARTRIDGE AND METHOD - A device and method relating to storage of ammonia in a solid form and the subsequent release of gaseous ammonia for use in the selective catalytic reduction of NO | 01-10-2013 |
| 20130028820 | Exhaust Gas Treating Apparatus and Treating Method for Carbon Dioxide Capture Process - Disclosed are an exhaust gas treating apparatus and a treating method for a carbon dioxide capture process, in which harmful substances remaining in the exhaust gas discharged from the conventional flue-gas desulfurization process are additionally removed for efficient performance of the carbon dioxide capture process. According to the exhaust gas treating apparatus for a carbon dioxide capture process, it has the effects of minimizing the installation space of desulfurization equipment and reducing the process cost. In addition, by keeping the contaminants contained in the gas introduced in the carbon dioxide capture equipment below a proper level, absorption performance can be improved as degradation of the absorbent used in the carbon dioxide capture process is prevented. After all, it has an advantage of preventing the pollution by the exhaust gas discharged into the atmosphere. | 01-31-2013 |
| 20130028821 | PROCESS FOR REMOVING CONTAMINANTS FROM GAS STREAMS - The present invention provides for process for inhibiting the levels of nitrogen oxides in process gas streams from sulfuric acid regeneration and sulfuric acid production plants. Partial oxidation of the nitrogen oxides is achieved by feeding a sub stoichiometric amount of ozone as to nitrogen oxides to the process gas stream. | 01-31-2013 |
| 20130034485 | MERCURY REMOVING SYSTEM AND MERCURY REMOVING METHOD - According to the present invention, a mercury removing system (A) includes a reaction gas supplier ( | 02-07-2013 |
| 20130039827 | Selective Catalytic NOx Reduction Process and Control System - A process and an apparatus enhance urea utilization for selective catalytic reduction (SCR) of NO | 02-14-2013 |
| 20130071311 | AIR POLLUTION CONTROL SYSTEM AND AIR POLLUTION CONTROL METHOD - An air pollution control system | 03-21-2013 |
| 20130089482 | WATER RECOVERY AND ACID GAS CAPTURE FROM FLUE GAS - Methods for removing acid gases and recovering water from flue gas. A flue gas is introduced into a water spray tower and is cooled by direct contact with a sprayed aqueous stream to condense a portion of the water vapor in the flue gas. Acid gases present in the flue gas are absorbed into the aqueous mixture, and a chemical added to the stream facilitates conversion of absorbed acid gases. The aqueous stream leaving the spray tower is next treated to remove contaminants, such as carbonates and bicarbonates, thereby producing a cleaned aqueous stream that may be split into a stream that is cooled prior to reuse in the spray tower, as well as a stream that is fed back to the boiler. | 04-11-2013 |
| 20130101487 | GAS ANALYSIS DEVICE, MERCURY REMOVAL SYSTEM, GAS ANALYSIS METHOD, AND REMOVAL METHOD FOR MERCURY IN FLUE GAS - A gas analysis device according to the present invention includes a flue-gas extraction pipe for extracting flue gas from a flue gas duct to which flue gas including both of NH | 04-25-2013 |
| 20130108534 | Method for Removing Nitrogen Oxides from Combustion Fumes with On-Site Generation of Ammonia | 05-02-2013 |
| 20130156671 | METHOD AND APPARATUS TO INJECT REAGENT IN SNCR/SCR EMISSION SYSTEM FOR BOILER - An apparatus to introduce a reagent to reduce nitrogen oxides in flue gas including: nozzles mounted to a passage for the flue gas, wherein the nozzles are mounted downstream of a SNCR system and upstream of a SCR system, wherein the nozzles are mounted on one or more walls of the passage and are configured to inject a pressurized fluid into the flue gas; a source of the pressurized fluid which is in fluid communication with the nozzles such that the pressurized fluid flows to the nozzles; a source of a NOx reducing reagent and a mixing device which mixes the reagent with the pressurized fluid such that the pressurized fluid flowing to the nozzles includes the reagent. | 06-20-2013 |
| 20130177490 | REMOVAL OF ATMOSPHERIC POLLUTANTS FROM GAS, RELATED APPARATUS, PROCESSES AND USES THEREOF - One aspect of the invention relates to a method comprising a single-stage conversion of NO and/or NO | 07-11-2013 |
| 20130183219 | METHODS FOR REDUCING NITROGEN OXIDES EMISSIONS - A method to reduce the emission of contaminants such as nitrogen oxides from the operation of a submerged combustion vaporizer. Fuels are combusted and the combustion gases are fed to an aqueous system which heats up and vaporizes cryogenic fluids in tube bundles in the submerged combustion vaporizer. Ozone is added to the aqueous system and will react with the contaminants allowing for their removal from the aqueous system. | 07-18-2013 |
| 20130209340 | METHOD AND APPARATUS FOR REDUCING THE QUANTITY OF POLLUTANT IN WASTE GASES - A method and apparatus for reducing the quantity of pollutant in waste gases, in particular for reducing the quantity of nitrogen oxide in the flue gas of a coal-fired power plant is provided. The process includes the steps of, introducing the waste gas into a catalyzer, to which a quantity of catalytic reduction agent is supplied, measuring the quantity of pollutant at the outlet of the catalyzer, and setting the quantity of pollutant to a setpoint value smaller than a limit value to be complied with, by varying the quantity of reduction agent supplied, wherein the setting of the quantity of pollutant is dynamically regulated as a function of mean values over time, for example half-hour or quarter-hour mean values, of the measured quantity of pollutant determined regularly beforehand. | 08-15-2013 |
| 20130216461 | NITRIC ACID PRODUCTION - A method for reducing the levels of nitrogen oxides in the tail gas from a nitric acid production process by adding ozone to the absorber column of the production process. Nitric acid formation is also intensified by adding a mixture of secondary air and oxygen to the absorber column. | 08-22-2013 |
| 20130224093 | PROCESS AND APPARATUS FOR REMOVAL OF NITROGEN OXIDES, SULFUR OXIDES AND MERCURY FROM OFF GAS THROUGH OXIDIZATION - Provided is a process for integrating treatment of off gas through NO | 08-29-2013 |
| 20130259786 | APPARATUS AND METHOD FOR THE REMOVAL OF NITROGEN DIOXIDE FROM A FLUE GAS STREAM - Disclosed herein is an apparatus comprising an absorption chamber; a flue gas stream inlet, the flue gas stream inlet being operative to dispose a flue gas stream in the absorption chamber, wherein the flue gas stream comprises nitrogen dioxide; an absorbing agent inlet, the absorbing agent inlet being operative to dispose an absorbent agent in the absorption chamber, the absorbing agent comprising an absorbing agent compound and a solvent, wherein the absorbing agent is chemically reactive with nitrogen dioxide to absorb nitrogen dioxide from the flue gas stream, forming a reaction product. | 10-03-2013 |
| 20130259787 | METHOD AND SYSTEM FOR NOx REMOVAL FROM A FLUE GAS - A system for reducing NO | 10-03-2013 |
| 20130272940 | On Demand Generation of Ammonia for Small Industrial and Commercial Boilers - A system and method for reducing NOx emissions from a lean burn combustion source is provided. The system includes a blower passing air through a continuous duct having a hot portion and a reaction portion. The hot portion of the duct is positioned in the convective zone of the combustion source to heat the passing air for the reaction portion of the duct. An injector attached to a urea storage container is positioned in the reaction portion of the duct and sprays urea from the storage container into the heated air in the reaction duct for evaporation and decomposition into ammonia gas. The ammonia gas is then supplied to an injection grid in the exhaust duct of the lean burn combustion source upstream of a NOx reduction catalyst. The injection grid supplies the ammonia gas to the exhaust gas in the exhaust duct. | 10-17-2013 |
| 20130272941 | METHOD FOR THE TREATMENT OF EXHAUST GAS PRODUCED BY HIGH-TEMPERATURE WASTE INCINERATOR WITH A DUAL-PURPOSE REACTOR AND THE SYSTEM THEREOF - The present invention relates to environmental protection field. The present invention provided a method and a system thereof for treating flue gases generated from waste incinerator by using a dual-purpose reactor, wherein said dual-purpose reactor includes a connected incineration chamber and gas-solid suspension chamber. The method and the system of the invention can continuous operate under high temperature and remove acid gases and dioxin or dioxin precursor completely. | 10-17-2013 |
| 20130309156 | START UP CATALYST HEATING - Systems and methods are described for reducing the start-up time of flue gas conditioning processes. Such processes can include a gas removal unit configured to selectively remove a reactive gas from a flue gas stream using a catalyst and reagent to produce a scrubbed stream that is substantially depleted of the reactive gas. A heating device can advantageously be used upstream of the gas removal unit to thereby preheat the catalyst to an operational temperature and thereby reduce the start-up time of the process. | 11-21-2013 |
| 20140050644 | CHARGE-INDUCED SELECTIVE REDUCTION OF NITROGEN - A selective catalytic reduction system (SCR) or selective non-catalytic reduction (SNCR) system include a reagent charging apparatus configured to apply one or more electrical charges to a NOx reducing reagent. The electrical charges enhance mixing of the reagent with fluids carrying NOx and/or enhance reactivity of the reagent with NOx. | 02-20-2014 |
| 20140079615 | EXHAUST GAS TREATMENT SYSTEM AND A METHOD OF TREATING EXHAUST GAS - A flue gas treatment system and a flue gas treatment method capable of drastically reducing operating cost and an amount of waste water and capable of controlling an amount of a NOx reducing agent and a mercury oxidation agent to be supplied are provided. The flue gas treatment system sprays an aqueous solution containing ammonium halide into a flue, reduces NOx and oxidizes mercury in a deNOx section, and removes SOx and the mercury in a desulfurization section. The flue gas treatment system adds at least one of ammonium sulfate and ammonium carbonate to waste water which is discharged from the desulfurization section and from which CaSO | 03-20-2014 |
| 20140105802 | Denox Treatment For A Regenerative Pyrolysis Reactor - A process of introducing a NOx reduction fluid into combustion products within a downstream end of a regenerative pyrolysis reactor. This NOx reduction fluid may thermally reduce NOx contained therein. The NOx reduction fluid may include ammonia. | 04-17-2014 |
| 20140127107 | Method for removing contaminants from exhaust gases - In a method for removing a portion of contaminants, such as nitrogen oxides, from an exhaust gas stream of a combustion process, the exhaust gas stream is separated into two or more gas streams. At least one of the two or more gas streams is treated first by mixing with ozone. The treated gas stream is then fed to a scrubber where it is recombined with the untreated gas stream. Excess ozone present in the treated gas stream is consumed by oxidation of contaminants in the untreated gas stream before the combined gas stream is released to the atmosphere. The portion of the gas stream separated for mixing with ozone directly correlates to the amount of nitrogen oxides that are desired to be removed from the stream. | 05-08-2014 |
| 20140140913 | METHODS FOR REMOVING CONTAMINANTS FROM EXHAUST GASES - A method for removing contaminants from a gas stream by feeding the gas stream into a scrubber that can use seawater as the scrubbing medium. The gas stream is first scrubbed with the seawater and then mixed with ozone to remove the contaminants. Nitrogen oxides that are present in the gas stream are converted to nitric acid/nitrates and these are recovered via condensate or coalesced mist for neutralization. The treated gas stream is then exhausted to the atmosphere. | 05-22-2014 |
| 20140199221 | METHOD FOR REMOVING CONTAMINANTS FROM EXHAUST GASES - A method for removing contaminants from the effluent from metal pickling operations by oxidizing the contaminants in the effluent, passing the oxidized effluent to a first scrubber thereby removing mixed acid vapors and some nitrogen oxides and passing these scrubbed gases to a second scrubbing system while injecting ozone into a duct between the first and the second scrubbing systems thereby to oxidize nitrogen oxides to higher oxides and scrubbing the oxidized nitrogen oxides gas stream in the second scrubbing system. | 07-17-2014 |
| 20140286845 | METHOD FOR REMOVING NITROGEN OXIDES - This method for removing nitrogen oxides brings exhaust gas containing oxygen and at least one nitrogen oxide selected from the group consisting of nitrogen monoxide and nitrogen dioxide into contact with ammonia without the presence of a catalyst, for at least 0.5 seconds under a temperature of no less than 900 DEG C., and breaks down the nitrogen oxide. According to this method, it is possible to remove nitrogen oxides in a highly efficient manner and significantly reduce the amount of unreacted ammonia. | 09-25-2014 |
| 20140314648 | REMOVAL OF ATMOSPHERIC POLLUTANTS FROM GAS, RELATED APPARATUS, PROCESSES AND USES THEREOF - Methods related generally to the removal of atmospheric pollutants from the gas phase, are provided, as well as related apparatus, processes and uses thereof. A single-stage air scrubbing apparatus is provided that includes at least one reaction vessel, at least one introduction duct, and a turbulence component, wherein a residence time is sufficient to allow the conversion of at least one atmospheric pollution compound to at least one other compound, molecule or atom. In some embodiments, the at least one atmospheric pollution compound comprises nitrogen oxide, sulfur oxide or a combination thereof. Additionally, methods of removing atmospheric pollution compounds from a waste gas stream are disclosed that include introducing a waste gas stream and at least one additional gas stream, mist stream, liquid stream or combination thereof into a single-stage air scrubbing apparatus at a flow rate sufficient to allow for conversion of the at least one atmospheric pollution compound. | 10-23-2014 |
| 20150010454 | TREATMENT SYSTEM AND METHOD FOR A FLUE GAS FROM A COMBUSTION PROCESS - The treatment system for a flue gas from a combustion process includes a condenser, a compressor for compressing the flue gas deprived of moisture at the condenser, a NO | 01-08-2015 |
| 20150044116 | Method for removing contaminants from exhaust gases - In a method for removing a portion of contaminants, such as nitrogen oxides, from an exhaust gas stream of a combustion process, the exhaust gas stream is conveyed through a gas distributor at an inlet of a wet horizontal spray scrubber. A distributor separates the gas stream into a plurality of spaced apart partitioned gas streams. The gas stream is partitioned in the chamber of the scrubber without the need for any physical partitions or obstructions positioned in the chamber. A preselected number of the partitioned gas streams are mixed with ozone to oxidize the contaminants in the gas streams. The oxidized gas streams are then sprayed with an aqueous medium to capture the oxidized contaminants and remove them from the treated gas streams. The treated gas streams are then recombined with the untreated gas streams. Excess ozone present in the treated gas streams is consumed by oxidation of contaminants in the untreated gas streams before the combined gas stream is released to the atmosphere. The partitioned gas streams selected for mixing with ozone directly correlates to the amount of nitrogen oxides that are desired to be removed from the exhaust gas stream. | 02-12-2015 |
| 20150056117 | REMOVAL OF ATMOSPHERIC POLLUTANTS FROM GAS, RELATED APPARATUS, PROCESSES AND USES THEREOF - Methods related generally to the removal of atmospheric pollutants from the gas phase, are provided, as well as related apparatus, processes and uses thereof. A single-stage air scrubbing apparatus is provided that includes at least one reaction vessel, at least one introduction duct, and a turbulence component, wherein a residence time is sufficient to allow the conversion of at least one atmospheric pollution compound to at least one other compound, molecule or atom. In some embodiments, the at least one atmospheric pollution compound comprises nitrogen oxide, sulfur oxide or a combination thereof. Additionally, methods of removing atmospheric pollution compounds from a waste gas stream are disclosed that include introducing a waste gas stream and at least one additional gas stream, mist stream, liquid stream or combination thereof into a single-stage air scrubbing apparatus at a flow rate sufficient to allow for conversion of the at least one atmospheric pollution compound. | 02-26-2015 |
| 20150064086 | ELECTRIC REAGENT LAUNCHER FOR REDUCTION OF NITROGEN - A selective catalytic reduction system (SCR) or selective non-catalytic reduction (SNCR) system include a reagent charging apparatus configured to apply one or more electrical charges to a NOx reducing reagent. The electrical charges enhance mixing of the reagent with fluids carrying NOx and/or enhance reactivity of the reagent with NOx. | 03-05-2015 |
| 20150064087 | REMOVAL OF ATMOSPHERIC POLLUTANTS FROM GAS, RELATED APPARATUS, PROCESSES AND USES THEREOF - Methods related generally to the removal of atmospheric pollutants from the gas phase, are provided, as well as related apparatus, processes and uses thereof. A single-stage air scrubbing apparatus is provided that includes at least one reaction vessel, at least one introduction duct, and a turbulence component, wherein a residence time is sufficient to allow the conversion of at least one atmospheric pollution compound to at least one other compound, molecule or atom. In some embodiments, the at least one atmospheric pollution compound comprises nitrogen oxide, sulfur oxide or a combination thereof. Additionally, methods of removing atmospheric pollution compounds from a waste gas stream are disclosed that include introducing a waste gas stream and at least one additional gas stream, mist stream, liquid stream or combination thereof into a single-stage air scrubbing apparatus at a flow rate sufficient to allow for conversion of the at least one atmospheric pollution compound. | 03-05-2015 |
| 20150139880 | METHOD FOR REMOVING NITROGEN OXIDES FROM COMBUSTION FUMES WITH ON-SITE GENERATION OF AMMONIA - A method for the control of nitrogen oxides content in the combustion fumes of a thermal power plant is disclosed; the method comprises the on-site production of ammonia by the steps of: electrolysis of water as a source of hydrogen; separation of air as a source of nitrogen, formation of a make-up gas and synthesis of ammonia in a suitable synthesis loop; said on-site produced ammonia, or a solution thereof, is used for a process of reduction of nitrogen oxides in the combustion fumes. | 05-21-2015 |
| 20150290583 | PROCESS AND APPARATUS FOR REDUCING THE CONTENT OF NITROGEN OXIDES - The invention provides a process for treating nitrogen oxide-containing offgases from industrial processes, e.g. flue gases, for the purposes of removing and/or separating out the nitrogen oxides and/or for the purposes of reducing the nitrogen oxide content by means of chemical reduction of the nitrogen oxides, in particular a process for the removal of nitrogen oxides from offgases from industrial plants, wherein at least two different nitrogen-containing reducing agents are brought into contact with the nitrogen oxide-containing offgases or introduced into the stream of the nitrogen oxide-containing offgases. The present invention further provides an apparatus (plant) for carrying out this process. | 10-15-2015 |
| 20150336051 | EXHAUST-GAS PURIFICATION DEVICE AND METHOD FOR THE REDUCTION OF NITROGEN OXIDES FROM AN EXHAUST GAS OF A FOSSIL-FIRED POWER PLANT - A catalytic exhaust gas purification device and method for the reduction of nitrogen oxides from an exhaust gas of a fossil-fired power plant, having a heating gas duct along a flow direction and having a reactor chamber which is arranged in the heating gas duct is provided. In the reactor chamber there are arranged a first reduction reactor for the reduction of nitrogen oxides NOx to form water H | 11-26-2015 |
| 20150362255 | Method and Device for Treating Exhaust Gases - The present invention relates to a method for treating exhaust gases containing nitrogen oxide from technical processes, such as fume gases, for the purpose of removing or precipitationg the nitrogen oxide and/or for the purpose of reducing the nitrogen oxide content, in particular by chemically reducing the nitrogen oxide. | 12-17-2015 |
| 20160023163 | METHOD FOR REMOVING NITROGEN OXIDES FROM COMBUSTION FUMES WITH ON-SITE GENERATION OF AMMONIA - A method for the control of nitrogen oxides content in the combustion fumes of a thermal power plant is disclosed; the method comprises the on-site production of ammonia by the steps of: electrolysis of water as a source of hydrogen; separation of air as a source of nitrogen, formation of a make-up gas and synthesis of ammonia in a suitable synthesis loop; said on-site produced ammonia, or a solution thereof, is used for a process of reduction of nitrogen oxides in the combustion fumes. | 01-28-2016 |
| 20160045865 | PROCESSING OF OFF-GAS FROM WASTE TREATMENT - Waste treatment comprises heating it in a chamber to effect pyrolysis of the waste, introducing oxygen into the chamber to effect combustion of the pyrolyzed waste, and contacting off-gas from the pyrolysis and/or combustion steps with an oxidation catalyst to convert carbon monoxide and hydrocarbons in the off-gas into carbon dioxide and water and with a reduction catalyst to convert nitrous oxides to nitrogen and oxygen. Thus, domestic waste is treated in a batch process using catalytic converters to reduce the level of toxic components before off-gas reaches the atmosphere. | 02-18-2016 |
| 20160083259 | REDUCTANT STORAGE - An assembly and method for storing a reductant, including ammonia, for use in the treatment of NO | 03-24-2016 |
| 20160114288 | DEVICE FOR TREATING AT LEAST ONE GASEOUS EFFLUENT STREAM AND CORRESPONDING TREATMENT METHOD - A device for treating at least one gaseous stream ( | 04-28-2016 |
| 20160136574 | REMOVAL OF ATMOSPHERIC POLLUTANTS FROM GAS, RELATED APPARATUS, PROCESSES AND USES THEREOF - Methods related generally to the removal of atmospheric pollutants from the gas phase, are provided, as well as related apparatus, processes and uses thereof. A single-stage air scrubbing apparatus is provided that includes at least one reaction vessel, at least one introduction duct, and a turbulence component, wherein a residence time is sufficient to allow the conversion of at least one atmospheric pollution compound to at least one other compound, molecule or atom. In some embodiments, the at least one atmospheric pollution compound comprises nitrogen oxide, sulfur oxide or a combination thereof. Additionally, methods of removing atmospheric pollution compounds from a waste gas stream are disclosed that include introducing a waste gas stream and at least one additional gas stream, mist stream, liquid stream or combination thereof into a single-stage air scrubbing apparatus at a flow rate sufficient to allow for conversion of the at least one atmospheric pollution compound. | 05-19-2016 |
