| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 203039000 | WITH DISPARATE PHYSICAL SEPARATION | 69 |
| 20080308403 | METHOD AND APPARATUS FOR VACUUM OR PRESSURE DISTILLATION - A method of separating salts from a feedwater stream includes the steps of (a) circulating a heat exchange media fluid serially between a holding tank, a condenser and an evaporator; (b) evaporating at least about 20% of the feedwater stream by thermal contact with the heat exchange media fluid in the evaporator to yield steam and a hot brine stream; (c) pressurizing the steam in a compressor operating at between about 30% and about 60% efficiency and at a pressure differential of between about 0.5 psi and about 5 psi; and (d) condensing the steam by thermal contact with the heat exchange media fluid in the condenser to yield a hot condensate stream and a heated heat exchange media fluid. In the invention, the feedwater stream is initially pre-heated by thermal contact with the hot condensate stream in a pre-heater to yield a cool condensate product stream and an initially pre-heated feedwater stream, and the feedwater stream is further pre-heated by thermal contact with the hot brine stream to yield a cool brine product stream and a further pre-heated feedwater stream. | 12-18-2008 |
| 20090038931 | DEVICE FOR EXTRACTION OF ORGANIC CHEMICAL COMPOUNDS WITH TOXIC PROPERTIES, WHICH ARE PRESENT IN ATMOSPHERIC SAMPLES, BY USING SOLVENTS HEATED BY THE APPLICATION OF FOCALIZED MICROWAVES IN OPEN SYSTEMS (NOT PRESSURIZED) - Device to extract organic chemical compounds from particulate material (MP) that comes from atmospheric samples, using solvents heated by the application of focalized microwaves (MW), performed in open systems, which consists of:
| 02-12-2009 |
| 20090236213 | ENRICHMENT OF LIGHT HYDROCARBON MIXTURE - Light hydrocarbon enrichment is accomplished using a vertically oriented distillation column having a plurality of vertically oriented, nonselective micro/mesoporous hollow fibers. Vapor having, for example, both propylene and propane is sent upward through the distillation column in between the hollow fibers. Vapor exits neat the top of the column and is condensed to form a liquid phase that is directed back downward through the lumen of the hollow fibers. As vapor continues to ascend and liquid continues to countercurrently descend, the liquid at the bottom of the column becomes enriched in a higher boiling point, light hydrocarbon (propane, for example) and the vapor at the top becomes enriched in a lower boiling point light hydrocarbon (propylene, for example). The hollow fiber becomes wetted with liquid during the process. | 09-24-2009 |
| 20110048922 | METHODS AND APPARATUSES FOR STEAM ADDITION TO A REBOILER COUPLED TO AN EXTRACTIVE DISTILLATION COLUMN FOR IMPROVED EXTRACTIVE DISTILLATION - Methods and apparatuses for extractive distillation using internal addition of steam to an extractive distillation column from a reboiler are described herein. The apparatuses include an extractive distillation column, a reboiler (for example, a kettle reboiler) coupled to the extractive distillation column, and a steam input line. The steam input line is coupled to an internal steam sparger device of the reboiler. Methods utilizing the apparatuses to perform extractive distillation of a hydrocarbon feed stream are also described herein. | 03-03-2011 |
| 20110180384 | METHOD AND SYSTEM FOR SUPERCRITICAL REMOVAL OF AN INORGANIC COMPOUND - In at least one embodiment, the present invention relates to a method and system for supercritical removal of an inorganic compound. The method includes: bringing a fluid including one or more inorganic fractions at supercritical conditions; separating at least one of the fractions in the fluid; cooling and/or depressurizing the fluid; and removing the at least one separated fraction. | 07-28-2011 |
| 20120043197 | TEREPHTHALIC ACID PURGE FILTRATION RATE BY CONTROLLING % WATER IN FILTER FEED SLURRY - The process relates improving terephthalic acid purge filtration rate by controlling % water in filter feed slurry and to the recovery of a metal catalyst from an oxidizer purge stream produced in the synthesis of carboxylic acid, typically terephthalic acid, while utilizing pressure filtration. | 02-23-2012 |
| 20120181161 | METHOD FOR THE PRODUCTION OF BIOETHANOL AND FOR THE COPRODUCTION OF ENERGY FROM A STARCHY PLANT STARTING MATERIAL - A method includes at least the following successive steps: A) preparing a paste (must) includes the starchy plant starting material (MPV) capable of being fermented; B) bringing about the fermentation of said paste with a view to obtaining a fermented mixture (MF); D) distilling said fermented mixture (MF), at least in part, so as to obtain bioethanol and light vinasse (VL); E1) producing at least a first fuel for the coproduction of energy, in particular thermal energy, using at least a part of the light vinasse. The method comprises a step C1) of separating, by filtration and pressing, the liquid phase (PL) and the solid phase (PS) from the fermented mixture involved before the distillation | 07-19-2012 |
| 20120228119 | Distillation System with Vertically Oriented Rotating Plates - A distiller is provided. The distiller includes a liquid-tight enclosure and an input source connected thereto for inputting a quantity of water into the liquid-tight enclosure. A plurality of substantially vertical rotatable plates is aligned along a substantially horizontal axis within the liquid-tight enclosure. At least a portion of each of the substantially vertical rotatable plates is submerged within the quantity of water inside the liquid-tight enclosure, and each of the substantially vertical rotatable plates has an opening. At least one manifold, having one or more exit ports, extends through a plurality of the openings of the substantially vertical rotatable plates, wherein a portion of the quantity of water is transferred via the substantially vertical rotatable plates to the manifold during a rotation of the plurality of substantially vertical plates. An output opening is formed in the liquid-tight enclosure, the output opening arranged in fluid communication with the manifold. | 09-13-2012 |
| 20130081936 | Processes for Producing Acrylic Acids and Acrylates - In one embodiment, the invention is to a process for producing an acrylate product. The process comprises the step of providing a crude product stream comprising the acrylate product and an alkylenating agent. The process further comprises the step of separating at least a portion of the crude product stream to form an alkylenating agent stream and an intermediate product stream. The alkylenating agent stream comprises at least 1 wt % alkylenating agent and the intermediate product stream comprises acrylate product. The separating is performed in at least one column at an operating pressure ranging from 40 kPa to 80 kPa. | 04-04-2013 |
| 20130118890 | PLANT FOR RECOVERING DEGRADED HEAT TRANSFER OIL FROM A SOLAR THERMAL FACILITY AND ASSOCIATED RECOVERY METHOD - The invention can be used to improve the yield of degraded heat transfer oil ( | 05-16-2013 |
| 20140061024 | DISTILLATION TOWER FEED DEVICE - A feed device for a distillation tower or column with a flash zone, wash zone and stripping zone has an annular, open-bottomed channel located around the periphery of the feed zone of the tower with an inner wall spaced from the inner curved wall of the tower and a top covering the channel to confer a generally inverted-U shape to the cross section of the channel. One or more tangential feed inlets are provided to admit a heated, mixed phase feed to the tower and direct the feed into and along the channel. One or more vapor scoops are provided for each feed inlet with the scoop(s) located on the inner wall of the channel, each at a sufficient distance along the channel from the inlet to permit cyclonic separation of vapor and liquid to take place before the vapor in the feed from the inlet enters the scoop(s) and passes through a vapor exit port into the central core of the tower. The tower is preferably used with a radial louvre baffle at the top of the stripping zone. | 03-06-2014 |
| 20150129413 | Two-Step Membrane Gas Separation Process - A gas separation process for treating a gas stream containing vapors of condensable components. The process includes two membrane separation steps, the second step using membranes of lower selectivity than the first step. Advantageously, the first membrane separation step may be carried out outside the pressure-ratio-limited region and the second membrane separation step may be carried out within the pressure-ratio-limited region. The second residue stream is a desired product of the process, and the process is particularly useful for applications where the target concentration of component A in this product is low, such as below 1-2 vol %. | 05-14-2015 |
| 203040000 | Of entrained particles from a vapor or gas | 8 |
| 20080217158 | Method for Obtaining Cyclododecatriene by Evaporation - Process for recovering cyclododecatriene (CDT) from a solution comprising CDT and high boilers such as deactivated catalyst and polymers, which comprises feeding the solution into a preheater and heating it, subsequently depressurizing it through a downstream pressure maintenance device and feeding the resulting two-phase mixture into a helical tube evaporator and there reducing the CDT content of the liquid phase by partial evaporation and discharging a gaseous product stream having an increased concentration of CDT. | 09-11-2008 |
| 20080314729 | Core de-entrainment device for vessels with tangential inlets - A distillation tower for use in a petrochemical or petroleum operation effects liquid and vapor separation by using centrifugal force applied to the feed introduced into a ring from a tangential inlet. The feed is separated into a liquid component that flows into the bottoms section of the tower and a vapor component that flows upwardly through the core of the ring to a wash zone in the tower. De-entrainment devices are provided in the core so that the vapor swirling upwardly impacts the devices and any remaining entrained liquid is separated from the vapor. As a result, overflash with decreased resid can be collected from the wash zone and used as feed suitable for a fluid catalytic cracking operation, for example. | 12-25-2008 |
| 20100300869 | Micro-fluidic separating device for liquid mixtures - The invention involves a micro-fluidic separation device for liquid mixtures with different boiling points. According to the invention it is intended that a head and a sump are formed in a separating channel; further intended is a thermo unit along the entire length of the separating channel consisting preferably of individually controllable heating and/or cooling elements. This makes it advantageously possible to perform a rectification of the liquid mixture with the separating device where individual fractions of the liquid mixture may be removed via the outlets. This allows continuous operations of the separating device at a simultaneously high degree of efficiency of the separation. | 12-02-2010 |
| 20110024282 | METHOD AND APPARATUS FOR SEPARATING A MULTI-COMPONENT STREAM - A process vessel is provided for separating a multi-component stream. The process vessel includes an inlet for permitting introduction of reaction water stream into the vessel and an outlet for withdrawing a water-rich phase from the vessel. The vessel further includes a plurality of draw-off points for drawing off a phase rich in suspended hydrocarbons from the vessel, the draw-off point(s) being located above the outlet. | 02-03-2011 |
| 20110094872 | METHOD FOR PRODUCING OF ULTRA-CLEAN AND HIGH-PURITY ELECTRONIC GRADE REAGENTS - A method for producing of ultra-clean and High-purity electronic grade reagents is disclosed. The industrial grade reagents are chemically pretreated and filtered, and the colature is rectified. Heating the steam during the rectification to overheated steam, and filtering the overheated steam used the microporous membrane to remove the solid particulates. Condensing the overheated steam and the secondarily filter to remove the dust in the product. Due to the adoption of the technical scheme, the ultra-clean and High-purity isopropanol produced is in conformity with standard SEMI-C12 and the hydrochloric acid to standard SEMI-C8. And the method is applicable for the large-scale continuous production. | 04-28-2011 |
| 20110240457 | CONTAINMENT EXTENSION AND PROCESSING METHOD - A mobile waste processing system and method is disclosed for processing materials in a tank, typically an underground storage tank. A mobile fluid processing module is disposed adjacent to or over the tank, and sealingly connected to the tank through a tank riser. Support equipment, which may include an electric power module, a chiller module, a heating module, and a control and monitor module, are disposed a distance from the processing module, and connected thereto. A pump and optionally a dispersal nozzle are deployed from the processing module into the tank, and effluent is extracted for processing. The processing trailer includes effluent processing equipment such as an evaporator and demister, condenser, vacuum pump, and interim storage tank. The effluent is processed, and at least a portion is removed. Some of the processed effluent may be returned to the tank. | 10-06-2011 |
| 20130299336 | SEPARATION METHOD FOR MIXED LIQUIDS - A method for separating one liquid from a mixed liquid containing at least a first liquid and a second liquid having a different boiling point from that of the first liquid, the method including: spraying the mixed liquid from a spraying means for spraying the mixed liquid, into a container into which a heated gas, having a temperature higher than at least one of the boiling point of the first liquid or the boiling point of the second liquid, is supplied from a heated gas supply means, the container having a discharge port for discharging at least a gas; vaporizing at least the first liquid by allowing the mixed liquid sprayed into the container to contact the heated gas; discharging, through the discharge port of the container, at least a mixed gas that contains the first liquid vaporized in the vaporizing; and separating liquid from the mixed gas. | 11-14-2013 |
| 20160001196 | SYSTEM FOR THE SEPARATION OF GASES FROM SOLIDS AND FLUIDS - A system for separating gases from solids and fluids, including a containment chamber having an upper chamber portion, a lower chamber portion disposed immediately below said upper chamber portion, and a heat exchange partition disposed between and separating said upper chamber portion from said lower chamber portion; means for conveying the feedstock into the upper chamber and for conveying the gas-containing solids and/or liquids from the upper chamber; a heat source in fluid communication with said lower chamber portion for circulating heated fluid through said lower chamber portion to and from said heat source; and a gas removal and storage apparatus to remove gases separated from the feedstock in said upper chamber portion and to then store such gases in a gas storage tank. | 01-07-2016 |
| 203041000 | Utilizing solid sorbent | 9 |
| 20090008235 | MEMBRANE-BASED HYBRID PROCESS FOR SEPARATION OF MIXTURES OF ORGANICS, SOLIDS, AND WATER - A system and process that are a hybrid of distillation and membrane separations offers a highly efficient means of separating a fluid feed mixture into organic, solid, and aqueous components. The distillation section is followed by two membrane separation sections operated in parallel, with the distillation section separating the feed mixture into an organics-rich fraction and an organics-depleted and solids-rich fraction. One membrane section operates on the organics-rich fraction and separates it into a more organics-rich sub-fraction and a water-rich, organics-depleted sub-fraction, while the other membrane section operates on the organics-depleted, solids-rich fraction from the distillation section and separates it into a solids-rich sub-fraction and a solids-depleted, water-rich sub-fraction. | 01-08-2009 |
| 20090308728 | METHOD FOR PURIFYING ALKYL AROMATIC COMPOUNDS - The present invention relates to a method for purifying alkyl aromatic compounds that is based on a system for percolating the fraction of the alkylate in which the chromophore precursors are concentrated using a selected clay placed in a fixed-bed reactor. | 12-17-2009 |
| 20110031102 | PURIFICATION OF HYDROFORMYLATED AND HYDROGENATED FATTY ALKYL ESTER COMPOSITIONS - Effect separation of a composition of matter that includes at least two seed or plant oil derivatives into at least one desired product stream using at least two separation operations, which are independently selected from among several potential separation operations, in conjunction with at least one recycle stream from a separation operation. | 02-10-2011 |
| 20110031103 | Method and Apparatus For Removal Of Oil From Utility Gas Stream - The present application is directed to a method and system for preparing gaseous utility streams from gaseous process streams, particularly, removing oil contamination from such streams prior to use in a dry gas seal. The methods and systems may include at least one kinetic swing adsorption process including pressure swing adsorption, temperature swing adsorption, calcination, and inert purge processes to treat gaseous streams for use in dry gas seals of rotating equipment such as compressors, turbines and pumps and other utilities. The adsorbent materials used include a high surface area solid structured microporous and mesoporous materials. | 02-10-2011 |
| 20120247943 | AROMATICS RECOVERY BY EXTRACTIVE DISTILLATION - The present invention relates to a process for recovering polar hydrocarbons from non-polar hydrocarbons, such as aromatics from non-aromatics, naphthenes from paraffins and isoparaffins, or olefins from paraffins and isoparaffins, in feed mixtures containing at least a measurable amount of heavier hydrocarbons. According to the invention, an improved extractive distillation (extractive-distillation) process is disclosed for recovering aromatic hydrocarbons including benzene, toluene, and xylenes from heavy (C | 10-04-2012 |
| 20130206580 | CONTINUOUS COOLANT PURIFICATION PROCESS AND DEVICE - A fluid processing device is provided for recycling a previously used water and glycol containing fluid by removing contaminants including hydrocarbon, metals, particulates and water contaminants from the water and glycol containing fluid. The device includes a particulate filter for removing particulates, an activated carbon filter for removing hydrocarbon contaminants, a micron-sized filter for removing at least one of particulate and metal contaminants, a high pressure membrane filter for removing contaminants and water, and a heater for heating the glycol containing fluid to a temperature at least near the boiling point of water in a predetermined reduced pressure atmosphere. The device also includes a low pressure separator having a tank kept generally at or near the predetermined reduced pressure for removing additional water from the water and glycol containing fluid. The low pressure separator includes a first exit port for removing separated water from the separator as steam, and a second exit port for removing substantially water free glycol based fluid from the low pressure separator. | 08-15-2013 |
| 20130206581 | DISPLACEMENT DESORPTION PROCESS FOR LIGHT OLEFIN SEPARATION - A process and apparatus for separating an olefin from mixed gases containing light olefins is provided. The process includes adsorbing the olefin of an olefin-containing mixed gas in an adsorption column packed with an adsorbent selectively adsorbing the olefin; discharging gases other than the olefin through the outlet of the adsorption column; desorbing the adsorbed olefin by displacement using a desorbent, and separating the olefin from the desorbent, thereby producing a high-purity olefin. The apparatus includes adsorption columns packed with an adsorbent selectively adsorbing an olefin, and at least two distillation columns for separating an olefin/desorbent mixture and an olefin poor stream/desorbent into their components. If the olefin concentration of the off-gas from an olefin rinse step is higher than that of a raw material gas, recovering the olefin from the off-gas is carried out before or after the adsorption step. | 08-15-2013 |
| 20130233698 | Method for Recovering Products Using Adsorption Separation and Fractionation - A process according to various approaches includes separating a component from a feed stream using adsorption separation. The process further includes directing one of the extract stream and the raffinate stream to a high pressure distillation column. In addition, the process includes pumping the one of the extract stream and the raffinate stream to increase the pressure in the stream to flow the one of the extract stream and the raffinate stream into an inlet of the distillation column. | 09-12-2013 |
| 20140231240 | SEPARATION OF R-1233 FROM HYDROGEN FLUORIDE - The invention relates to a process for separating monochloro-trifluoropropenes such as HCFC-1233 from azeotrope or azeotrope like combinations with HF. The process employs a cold, liquid phase separations and multiple azeotropic distillation trains. | 08-21-2014 |
| 203042000 | Utilizing liquid sorption of component from gas or vapor | 17 |
| 20100219061 | ENHANCEMENT OF ACID GAS ENRICHMENT PROCESS - An improved process for the removal and recovery of sulfur from a sour hydrocarbon stream is provided. The process includes contacting a sour hydrocarbon stream that includes hydrogen sulfide and carbon dioxide with a lean absorbent to produce a rich absorbent stream. The rich absorbent stream is separated and the recovered acid gas is contacted with a second absorbent to produce a second rich absorbent stream. A portion of the second rich absorbent is recycled to the separation step. A second portion of the second rich absorbent is separated to produce an acid gas product stream. Recycling a portion of the second rich absorbent to the first separation step shifts the equilibrium of the process, resulting in an acid gas product stream having an increased hydrogen sulfide:carbon dioxide ratio. | 09-02-2010 |
| 20100224478 | METHOD FOR COLLECTING (METH)ACRYLIC ACID AND APPARATUS FOR COLLECTING (METH)ACRYLIC ACID - The present invention provides a (meth)acrylic acid collecting method for collecting a (meth)acrylic acid from a mixed gas that includes an organic byproduct, a steam, and a (meth)acrylic acid that are generated in a production reaction of the (meth)acrylic acid, which includes the steps of a) contacting the mixed gas that includes the organic byproduct, the steam, and the (meth)acrylic acid with a (meth)acrylic acid absorption solvent to obtain a gas that includes the organic byproduct and the steam and the (meth)acrylic acid containing solution while the gas and the (meth)acrylic acid containing solution are separated from each other; b) contacting the gas that includes the organic byproduct and the steam that are obtained in the step a with the organic byproduct absorption solvent to obtain the gas that includes the steam and the organic byproduct containing solution while the gas and the organic byproduct containing solution are separated from each other; c) supplying the gas that includes the steam that is obtained in the step b into the production reaction of the (meth)acrylic acid; and d) obtaining the (meth)acrylic acid from the (meth)acrylic acid containing solution that is obtained in the step a while the (meth)acrylic acid and the (meth)acrylic acid containing solution are separated from each other, and a (meth)acrylic acid collecting device. | 09-09-2010 |
| 20100236916 | RECOVERY OF BENZENE AND BENZENE DERIVATIVES FROM GASOLINE FRACTION AND REFINERY STREAMS - A process for the separation of the aromatic compounds benzene, toluene and xylene from an aromatics-containing reformate gasoline and pyrolysis gasoline or a coke-oven light oil or an aromatics-containing refinery stream, in which the aromatics are separated by an extractive distillation uses a novel solvent combination made up of the compounds n,n′-diformyl piperazine or 2,2′-bis-(cyanoethyl)ether in a combination with n-formyl morpholine as a second solvent for extractive distillation so that the solvent combination obtained shows a higher selectivity with regard to the aromatics to be extracted so that a lower solvent load is required. The aromatics-containing feed mixture is first submitted to a pre-distillation so that the obtained fraction has a narrow boiling point range. This fraction is then submitted to an extractive distillation in a first column, in which an aromatics-lean head product of predominantly paraffinic hydrocarbons is obtained as well as an aromatics-enriched bottom product. The bottom product is passed to a second column in which an aromatics-rich raffinate is obtained by reducing the pressure or increasing the temperature so that the extracting solvent combination obtained as bottom product can be recycled into the process. | 09-23-2010 |
| 20100258427 | VAPOR-LIQUID CONTACTING APPARATUSES WITH VORTEX CONTACTING STAGES - Vapor-liquid contacting apparatuses, for example reactors and distillation columns (as well as reactive distillation apparatuses), comprising a vessel with one or more vortex contacting stages, are described. The one or more stages provide high interfacial area for the effective contacting of the different phases, in addition to the effective disengagement of these phases after contacting. | 10-14-2010 |
| 20100264012 | ENRICHMENT OF LIGHT HYDROCARBON MIXTURE - Light hydrocarbon enrichment is accomplished using a vertically oriented distillation column having a plurality of vertically oriented, nonselective micro/mesoporous hollow fibers. Vapor having, for example, both propylene and propane is sent upward through the distillation column in between the hollow fibers. Vapor exits neat the top of the column and is condensed to form a liquid phase that is directed back downward through the lumen of the hollow fibers. As vapor continues to ascend and liquid continues to countercurrently descend, the liquid at the bottom of the column becomes enriched in a higher boiling point, light hydrocarbon (propane, for example) and the vapor at the top becomes enriched in a lower boiling point light hydrocarbon (propylene, for example). The hollow fiber becomes wetted with liquid during the process. | 10-21-2010 |
| 20110067994 | SYSTEM AND METHOD FOR REMOVING VOLATILE VAPORS FROM CONTAINERS - A system is configured to remove volatile organic compounds from a container. The system includes an enclosed contactor vessel having a first inlet to receive vapor containing volatile organic compounds from the container and a second inlet. The second inlet receives a vapor capture medium from a source. A contactor facilitates entrainment of the volatile organic compounds with the vapor capture medium while a first outlet recirculates treated vapor back to the container to effect a closed loop. | 03-24-2011 |
| 20110108409 | USE OF SUPERHEATED STEAM DRYERS IN AN ALCOHOL DISTILLATION PLANT - The present invention is for the production of fuel grade alcohol, specifically ethanol. A steam dryer is used to dry the solid byproduct into usable animal feed. The steam dryer typically contains less than 6% air in its exhaust stream is directed to the bottoms of one or more distillation columns to heat the distillation column and scrub the exhaust stream simultaneously. The elimination of a thermal oxidizer and the efficient use of the energy in the exhaust stream provide considerable cost savings for an alcohol production plant. | 05-12-2011 |
| 20110278152 | PROCESS AND PLANT FOR RECOVERING NH3 FROM A MIXTURE COMPRISING NH3 AND ACID GASES - Disclosed herein is a process and a plant for recovering ammonia from a mixture including ammonia, acid gas containing H | 11-17-2011 |
| 20120145531 | Apparatus of extracting aromatic compounds from plants using a solvent in sub-zero temperature and process thereof - An extracting process including adding powder into a first flask in a first cooling bath maintained at a temperature; adding solvent into the first flask and sealing the first flask so that the solvent dissolves the predetermined powder to form a homogeneous solution; removing the first flask; and connecting the first flask to a first one of second flasks, interconnecting the second flasks, and connecting a third flask to the last second flask wherein a quantity of aromatic compounds absorbent fluid is contained in each second flask which is placed in a second cooling bath maintained at the temperature, the third flask is placed in a third cooling bath maintained at another temperature, the solution evaporates to flow vaporized aromatic compounds to the second flasks for absorption by the aromatic compounds absorbent fluid, and the vaporized solvent reaches the third flask to be condensed and collected. | 06-14-2012 |
| 20120168298 | METHOD AND PLANT FOR REPROCESSING WASTE SULPHURIC ACIDS FROM NITRIDING PROCESSES - The invention relates to a method for reprocessing waste acid from methods for producing nitro-aromatics, in particular for producing dinitrotoluene (DNT) or trinitrotoluene (TNT), to recover concentrated and purified sulfuric acid and nitric acid, wherein in a first stage, the waste acid is separated in a stripping column countercurrently with water vapor from the bottom of the stripping column into at least one vapor phase, which contains nitric acid and possibly nitro-organics, and a pre-concentrated sulfuric acid, and the vapor phase and the pre-concentrated sulfuric acid are condensed and/or reprocessed in downstream method stages, wherein in the first stage of the method, in addition to the stripping, according to the invention the nitric acid contained in the stripping vapor is concentrated in the presence of additional concentrated sulfuric acid so that nitric acid in a highly concentrated form suitable for feeding back into the nitriding process is obtained directly in the first stage. | 07-05-2012 |
| 20120211348 | Process to Remove Product Alcohol from a Fermentation by Vaporization Under Vacuum - A fermentation liquid feed including water and a product alcohol and optionally CO | 08-23-2012 |
| 20130118891 | Integration of FT System and Syn-gas Generation - In some implementations, a method for separating components includes receiving off-gas from a Fischer-Tropsch hydrocarbon synthesis reaction process. The off-gas is scrubbed with a light oil at least proximate atmospheric temperature to substantially remove a mixture of C | 05-16-2013 |
| 20140054161 | VAPOUR ABSORPTION SYSTEM - A vapour absorption system ( | 02-27-2014 |
| 20140311889 | PROCESS TO REMOVE PRODUCT ALCOHOLS FROM FERMENTATION BROTH - The present invention relates to processes to remove butanol and other product alcohols from a fermentation broth employing vacuum vaporization. | 10-23-2014 |
| 20150352461 | SYSTEMS AND METHODS FOR SEPARATING AND PURIFYING BUTADIENE - The present disclosure generally relates to systems for isolating and/or purifying byproducts of anaerobic fermentation processes, and methods of using same. In one embodiment, gas compositions comprising conjugated diolefins (e.g., 1,3-biobutadiene and/or isoprene) and various amounts of impurities (e.g., water vapor from fermentation media, carbon dioxide from microbe respiration, and organic bio-byproducts such as propanol) are produced in a fermentation process. microorganisms that comprise one or more polynucleotides coding for enzymes in one or more pathways that catalyze a conversion of a fermentable carbon source to butadiene. In some embodiments, the system includes one or more compressors and/or one or more distillers suitable for low-temperature separation of the conjugated olefin(s) from a substantial amount of the impurities in the gas composition | 12-10-2015 |
| 20160023965 | PROCESS AND APPARATUS FOR RECYCLING AND REFINING PROPYLENE - An apparatus for recycling propylene includes a first propylene recovery column, a flash tank, a second propylene recovery column, and a depropanizing column. The apparatus can effectively solve the problem of high power consumption in the prior art, and can be used for the industrial manufacturing of propylene recovery from a propylene oxide apparatus. A process for recycling and refining propylene also is described. | 01-28-2016 |
| 20160166947 | METHOD AND DEVICE FOR DISTILLATIVE SEPARATION OF A THREE- OR MULTI-COMPONENT MIXTURE | 06-16-2016 |
| 203043000 | Utilizing liquid-liquid extracting of distillation product | 11 |
| 20110162953 | RECOVERY OF BUTANOL FROM A MIXTURE OF BUTANOL, WATER, AND AN ORGANIC EXTRACTANT - A process for recovering butanol from a mixture comprising a water-immiscible organic extractant, water, butanol, and optionally a non-condensable gas, is provided. The butanol is selected from 1-butanol, isobutanol, and mixtures thereof. An overhead stream from a first distillation column is decanted into two liquid phases. The wet butanol phase is returned to the first distillation column as reflux. A bottom stream from the first distillation column is refined in a second distillation column to obtain a second overhead stream comprising butanol and a second bottoms stream comprising the extractant. The extractant comprises at least one solvent selected from the group consisting of C | 07-07-2011 |
| 20110162954 | RECOVERY OF BUTANOL FROM A MIXTURE OF BUTANOL, WATER, AND AN ORGANIC EXTRACTANT - A process for recovering butanol from a mixture comprising a water-immiscible organic extractant, water, butanol, and optionally a non-condensable gas, is provided. The butanol is selected from 1-butanol, isobutanol, and mixtures thereof. An overhead stream from a first distillation column is decanted into two liquid phases. The wet butanol phase is refined in a second distillation column; the aqueous phase is returned to the first distillation column. A portion of the wet butanol phase from the decanter is also returned to the first distillation column. The extractant comprises at least one solvent selected from the group consisting of C | 07-07-2011 |
| 20140262740 | SEPARATION OF IMPURITIES DURING EXTRACTION PROCESSES - A process for the removal of sulfur compounds from a hydrocarbon stream is disclosed. The process includes extractive distillation of a feed stock coupled with a solvent recovery column having a vapor side draw containing the sulfur compound impurities. | 09-18-2014 |
| 203044000 | Of distillate | 8 |
| 20140151215 | Separation and Recovery Device for Liquid Waste Including Radionuclide, and Separation and Recovery Method Using the Same - Provided are a separation and recovery device for a liquid waste including a radionuclide, and a separation and recovery method using the same. Specifically, the present disclosure relates to a separation and recovery device that may effectively separate a liquid waste, such as a waste detergent including a radionuclide, and simultaneously, may prevent the release of tritium and radiocarbon to the outside, and a separation and recovery method using the same. | 06-05-2014 |
| 20150299084 | PROCESS FOR PRODUCING ACETIC ACID - A process for removing acetaldehyde efficiently and producing high-purity acetic acid stably is provided. Methanol is allowed to continuously react with carbon monoxide in a carbonylation reactor | 10-22-2015 |
| 203045000 | And distilling raffinate phase | 4 |
| 20090008236 | Process for Recovering Brominated Butadiene Polymers from Solution - Brominated polybutadiene polymers are recovered from a bromination reaction solution by forming the solution into droplets, thermally stripping the solvent from the droplets, and then washing the resulting particles. The washed particles are then recovered from the washing liquid. The droplets can be dispersed into a gaseous medium such as air and then transferred into a nonsolvent liquid for washing, or can be formed directly into the nonsolvent liquid. The process forms a particulate polymer material that is easily filterable and has low levels of volatile impurities and inorganic salts. Brominated polybutadiene polymers recovered in this manner are often very thermally stable. | 01-08-2009 |
| 20110168541 | Refining Coal-Derived Liquid From Coal Gasification, Coking and Other Coal Processing Operations - A method of treating a coal-derived liquid byproduct from a coal gasification process includes subjecting the coal-derived liquid to a vacuum distillation process, thereby separating the coal-derived liquid into condensed gas and coal-derived liquid bottoms. The coal-derived liquid bottoms are mixed with a bottoms solvent capable of dissolving the coal-derived liquid bottoms. The solvent/bottoms mixture is introduced along with a linear chain hydrocarbon solvent into a liquid extractor. The Raffinate is separated from the solvent for the coal-derived liquid/bottoms mixture, thereby producing in a heavy extract. The condensed gas is subjected to atmospheric distillation producing a bottoms fraction and another condensed fraction. The bottoms fraction may be used as fuel or for diesel fuel production. The condensed fraction is extracted with a linear hydrocarbon solvent in an extractor to produce light neutral oil and a Raffinate which is a cresylic acid feed stock. | 07-14-2011 |
| 20120090981 | Process for Recovering Halogen Promoters and Removing Permanganate Reducing Compounds - This invention relates to processes for producing acetic acid and, in particular, to improved processes for recovering C | 04-19-2012 |
| 20150021160 | Processes for Producing Acetic Acid - Processes for the reduction and/or removal of permanganate reducing compounds (PRC'S) formed by the carbonylation of methanol in the presence of a Group VIII metal carbonylation catalyst to produce acetic acid are disclosed. More specifically, processes for reducing and/or removing PRC's or their precursors from intermediate streams during the formation of acetic acid by said carbonylation processes are disclosed. In particular, processes in which a low boiling overhead vapor stream from a light ends column is subjected to a distillation to obtain an overhead that is subjected to an extraction to selectively remove and/or reduce PRC's from the process is disclosed. The processes include steps of recycling one or more return streams derived from the distillation step and/or the extraction step to a light ends column and/or a drying column in order to improve water control in the overall reaction system. | 01-22-2015 |
| 203046000 | And distilling extractant phase | 2 |
| 20120285816 | METHOD FOR ISOLATING AN ALKANOL FROM AN AQUEOUS BIOTRANSFORMATION MIXTURE - The invention relates to the isolation of an alkanol from an aqueous biotransformation mixture, in that a) a first alkanol phase is obtained by means of distilling out an alkanol-water azeotrope from the aqueous biotransformation mixture and, if the azeotrope is a heteroazeotrope, phase separating the azeotrope and separating out an aqueous phase, b) a second alkanol phase is obtained by (i) liquid/liquid extracting the first alkanol phase using a solvent as an extracting agent, or (ii) azeotropic drying the first alkanol phase in the presence of the solvent as a carrier agent, and c) the second alkanol phase is fractionally distilled, producing a pure alkanol fraction. The biotransformation mixture is obtained, for example, by means of reducing an alkanol in the presence of an alcohol dehydrogenase. The method is adapted to the severe dilution of the products of value in the biotransformation mixture and works without long phase separation times when extracting by means of organic solvents. | 11-15-2012 |
| 20150299087 | PROCESS FOR THE ISOLATION OF LEVULINIC ACID AND FORMIC ACID - The invention provides a process for the isolation of levulinic acid and formic acid from a composition comprising formic acid and levulinic acid, said process comprising a solid-liquid separation step, a vapor removal step, and a solvent-solvent extraction step, wherein a vapor condensate vapor and/or an aqueous phase from the solvent extraction is used to wash the solid fraction. Washing with vapor condensate results in higher levulinic acid yields (higher levulinic acid recovery) as compared to washing with normal water. Washing with aqueous phase results in a less compressible filter cake. Washing first with aqueous phase and subsequently with condensate results in even higher levulinic acid yields. The process is suitable for isolating levulinic acid and formic acid from compositions made by acid hydrolysis of a lignocellulosic biomass, and also from compositions made by acid hydrolysis of sugars such as glucose and fructose. | 10-22-2015 |
| 203047000 | Utilizing removing solid from liquid | 12 |
| 20110139603 | SYSTEMS AND METHOD FOR LOW TEMPERATURE RECOVERY OF FRACTIONATED WATER - In accordance with one embodiment, a method for treating fractionated water produced by a hydraulic fracturing process is provided. The method includes decanting a fractionated water stream in at least one decanter. The decanter is maintained at a temperature ranging from about 90° F. to about 120° F. The method also includes flashing the decanted water in at least one first flash tank and at least one second flash tank in fluid communication with one another to provide a residual concentrate stream. The first flash tank is operated at a temperature ranging from about 180° F. to about 200° F. and the second flash tank is operated at a temperature ranging from about 140° F. to about 160° F. Both the first flash tank and the second flash tank are maintained at a vacuum pressure. The method also includes evaporating the residual concentrate stream in at least one evaporator kettle to produce a concentrated brine. The evaporator kettle is fluidly connected to the second flash tank, and the evaporator kettle is operated at a temperature ranging from about 95° F. to about 115° F. The evaporator kettle is maintained at a vacuum pressure. The method also includes dewatering the concentrated brine to produce recovered salt having less than about 20 wt. % water. | 06-16-2011 |
| 20110272269 | PROCESSES FOR PRODUCING SUCCINIC ACID FROM FERMENTATION BROTHS CONTAINING DIAMMONIUM SUCCINATE - Processes for making SA from either a clarified DAS-containing fermentation broth or a clarified MAS-containing fermentation broth that include distilling the broth under super atmospheric pressure at a temperature of >100° C. to about 300° C. to form an overhead that comprises water and ammonia, and a liquid bottoms that includes SA, and at least about 20 wt % water; cooling the bottoms to a temperature sufficient to cause the bottoms to separate into a liquid portion and a solid portion that is substantially pure SA; and separating the solid portion from the liquid portion. A method also reduces the broth distillation temperature and pressure by adding an ammonia separating and/or water azeotroping solvent to the broth. | 11-10-2011 |
| 20120067714 | METHOD FOR PRODUCING OF ULTRA-CLEAN AND HIGH-PURITY ELECTRONIC GRADE ACETIC ACID - A method for producing of ultra-clean and high-purity electronic acetic acid is disclosed. The method including following steps: Step 1, industrial acetic acid is fast distilled; Step 2, filtering the fraction by membrane of 0.05˜0.3 μm aperture; Step 3, rectification; Step 4, membrane filtration again. Due to the adoption of the technical scheme above, the ultra-clean and high-purity electronic grade acetic acid which purity is 99.8% is produced. The content of single metal ion is lower than 1 ppb and the content of particulates which is ≧0.5 μm is lower than 5 pcs/ml. The method of the invention will help to reduce energy consumption, to simplify the operation, and to achieve the high security. | 03-22-2012 |
| 20120125762 | RECOVERY OF TETRACOSANOL FROM A MIXTURE DERIVED FROM TALL OIL PITCH - The invention is related to a process to obtain tetracosanol from a complex mixture derived from tall oil pitch that comprises terpenoids, rosin alcohols, rosin aldehydes, aliphatic alcohols, hydrocarbons and stilbene derivatives. The process comprises a mixture crystallization step from hexane and a fractional distillation of the crystallized solids, which yields tetracosanol with more than 90% purity. | 05-24-2012 |
| 20120241308 | Thermal Distillation System and Process - A thermal distillation system comprises heating means and cooling means arranged to heat and cool, respectively, treatable liquid in a liquid circuit having a first section between a heating means output and cooling means input, and a second section between an a cooling means output and heating means input, and further comprises distillation stages, each including an evaporator on the first section and a condenser on the second section in heat exchange relationship with liquid in the second section, a carrier gas circuit, on which the evaporator and condenser are arranged, and an output for outputting liquid extracted, wherein the stages are arranged such that their evaporators are disposed along the first section in a direction from the heating means to the cooling means and their condensers are disposed in corresponding order along the second section in a direction from the heating means to the cooling means. | 09-27-2012 |
| 20130140169 | PROCESSES FOR PRODUCING NH4+ -OOC-R-COOH COMPOUNDS FROM FERMENTATION BROTHS CONTAINING NH4+ -OOC-R-COO- NH4+ COMPOUNDS AND/OR HOOC-R-COOH COMPOUND ACIDS, AND CONVERSION OF NH4+ -OOC -R-COOH COMPOUNDS TO HOOC-R-COOH COMPOUND ACIDS - A process for making a NH | 06-06-2013 |
| 20130277201 | Method for Separating and Recovering Silicon from Silicon Sludge - Disclosed is a method for selectively separating and recovering silicon from waste silicon sludge generated during a semiconductor manufacturing process. With the method for separating and recovering silicon from the silicon sludge, oil components, iron, silicon carbide that are included in the silicon sludge may be removed and silicon may be selectively separated and recovered. In addition, silicon may be efficiently recovered without injection of an additive for precipitating a specific component or without a separate device such as a magnetic separator, or the like, for removing iron. | 10-24-2013 |
| 20140042010 | METHOD FOR RECOVERING TRANSITION METAL TETRAHALIDE AND HYDROCARBONS FROM A WASTE STREAM - The present invention provides a process for recovering transition metal tetrahalides from a waste stream coming from a catalyst manufacturing process by (a) establishing a mixed stream comprising transition metal tetrahalide and transition metal alkoxyhalides; (b) forming a falling liquid film from the mixed stream of step (a) at a temperature of from 25 to 85° C. and an absolute pressure of from 0.05 to 0.6 bar; and (c) establishing from the film of step (b) a first vapour stream containing from 90 to 100% of recoverable components and a second liquid stream containing about 10 to 80% of titanium haloalkoxides. | 02-13-2014 |
| 20140061025 | DISTILLATION COLUMN AND METHOD FOR DISTILLING ACRYLIC ACID - A distillation column with external circulation evaporator and a sedimentation zone in the bottom of the column, from which the evaporator circulation is fed, and use of the distillation column according to the invention for the distillation of acrylic acid. | 03-06-2014 |
| 20150329477 | CONTINUOUS METHOD FOR SEPARATING SALTS IN THE PRODUCTION OF DIMETHYLACETAMIDE - What is proposed is a continuous process for discharging a solid, salt-containing phase comprising alkali metal acetates and/or alkaline earth metal acetates from the product mixture from the preparation of N,N-dimethylacetamide (DMAC) by reaction of methyl acetate (MeOAc) with dimethylamine (DMA) in the presence of a catalyst comprising N,N-dimethylacetamide (DMAC), methyl acetate (MeOAc), dimethylamine (DMA) and a catalyst, having the following process steps:
| 11-19-2015 |
| 203048000 | By crystallizing | 2 |
| 20150360142 | APPARATUS AND PROCESS FOR SEPARATING A TARGET PRODUCT FROM A LIQUID PHASE COMPRISING THE TARGET PRODUCT - The present invention relates to an apparatus ( | 12-17-2015 |
| 20160024043 | Process and Apparatus for Purification of a Stream Containing a Cyclic Ester of an Alpha-Hydroxycarboxylic Acid - The invention relates to a process for purification of a stream containing a cyclic ester of an alpha-hydroxycarboxylic acid of formula (I), wherein each R independently represents hydrogen or an aliphatic hydrocarbon having 1 to 6 carbon atoms comprising the steps of: (a) separating the cyclic ester-containing stream into one or more cyclic ester-containing vapour fractions and one or more cyclic ester-containing liquid fractions; (b) condensing a cyclic ester-containing vaporized fraction as obtained in step (a) to obtain a cyclic ester-containing condensate; (c) subjecting at least part of the cyclic ester-containing condensate as obtained in step (b) to melt crystallization to obtain a purified cyclic ester-containing stream and a residue stream; and (d) recovering the purified cyclic ester-containing stream as obtained in step (c). The invention further relates to an apparatus suitable for carrying out the present process. | 01-28-2016 |
