| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 203050000 | ADDING MATERIAL TO DISTILLAND EXCEPT WATER OR STEAM PER SE | 37 |
| 20100018849 | Removal of Trace Arsenic Impurities from Triethylphosphate (TEPO) - A method of removing trace levels of arsenic-containing impurities from raw triethylphosphate (TEPO) is disclosed. The method uses adsorption, or adsorption followed by a flash distillation. The method comprises contacting raw triethylphosphate (TEPO) with an adsorbent which selectively adsorbs the arsenic-containing impurities in the raw triethylphosphate (TEPO). The adsorbent is a base promoted alumina containing adsorbent represented by a formula: Z | 01-28-2010 |
| 20100025220 | Process for extractive distillation - A process for extractive distillation, including: feeding a solvent to an extractive distillation column via a solvent feeding inlet, wherein the solvent has a feeding temperature 3.5-22.5° C. higher than a top temperature of the extractive distillation column; feeding a mixture comprising a light component and a heavy component to the extractive distillation column via a mixture feeding inlet, wherein the mixture is liquid, and the mixture feeding inlet is lower than the solvent feeding inlet; condensing a vapor generated by the mixture in an upper portion of the extractive distillation column to obtain the light component; and separating the solvent in a lower portion of the extractive distillation column to obtain the heavy component. | 02-04-2010 |
| 20100187088 | SEPARATION OF CLOSE BOILING COMPOUNDS BY ADDITION OF A THIRD COMPOUND - The invention provides a method for separating halocarbons. In particular, a method for separating 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) from 2-chloro-3,3,3-trifluoropropene (HCFC-1233xf) by adding a third component and then separating via conventional distillation. More particularly the invention pertains to a method for separating HCFC-244bb from HCFC-1233xf which are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf). | 07-29-2010 |
| 20100264013 | Method and Apparatus for Separating Fluid Mixtures - A system and method for separating a fluid mixture is provided which employ vacuum distillation apparatus, and optionally, gas-handling apparatus operable to introduce a gas into the liquid mixture prior to being dispersed within the vacuum distillation apparatus. The liquid mixture is dispersed within the vacuum distillation apparatus as micro-sized droplets. When used, the gas that has been introduced into the liquid mixture is rapidly liberated from the micro-sized droplets thereby causing the droplets to break into still smaller droplets thereby maximizing the vaporization of the more volatile components in the liquid mixture. | 10-21-2010 |
| 20120037490 | IN-LINE TREATMENT OF HYDROCARBON FLUIDS WITH OZONE - A system for treating recovered fluids in-line that includes a thermal reactor for separating contaminated drill cuttings into drill cuttings and contaminants by applying heat to the contaminated drill cuttings so as to vaporize contaminants from the contaminated drill cuttings; a first condenser in fluid connection with the thermal reactor for condensing the vaporized contaminants; a separator in fluid connection with the first condenser for separating the condensed vapors into an oleaginous liquid and an aqueous liquid, wherein at least a portion of one of the aqueous liquid and oleaginous liquid is fed back into the first condenser via a feedback line; and an ozone generator operatively coupled to the feedback line, wherein at least the portion of the fed back liquid is ozonated by the ozone generator and fed into the condenser is disclosed. | 02-16-2012 |
| 20130306463 | PURIFYING A FLUID USING A HEAT CARRIER COMPRISING AN ELECTROMAGNETIC RADIATION-ABSORBING COMPLEX - In general, the invention relates to a system. The system includes a heating fluid vessel ( | 11-21-2013 |
| 20140124358 | SELECTIVE OLEFIN EXTRACTION - A process and system for separating butenes and butanes by extractive distillation using a polar solvent is disclosed. The process may include: contacting a hydrocarbon mixture including butanes and butenes with a lean solvent mixture in an extractive distillation column to form an enriched solvent fraction comprising butenes; recovering an overheads fraction comprising butanes and a bottoms fraction from the extractive distillation column; feeding the bottoms fraction to a stripper including a stripping section and a wash section; recovering the lean solvent mixture as a bottoms fraction and a stripper overheads fraction comprising butenes and water from the stripper; condensing the overheads fraction to form a water fraction and a product butenes fraction; feeding water as reflux to a top of the stripper wash section; feeding at least a portion of the condensed water fraction intermediate the top and bottom of the stripper wash section as a second reflux. | 05-08-2014 |
| 20140158521 | METHODS AND APPARATUSES FOR SEPARATING DESORBENT FROM MULTIPLE STREAMS - Methods and apparatuses for separating desorbent from an extract stream and a raffinate stream are provided. An exemplary method includes fractionating a first stream in a first fractionation zone into a first fractionation overhead stream and a first fractionation bottom stream. The first stream includes an extract stream including a desorbent from an adsorption zone. A second stream different from the first stream is fractionated in a second fractionation zone into a second fractionation overhead stream and a second fractionation bottom stream. The second fractionation zone is in liquid isolation from and in vapor communication with the first fractionation zone. The second stream includes a raffinate stream including the desorbent from the adsorption zone. The first and second fractionation bottom streams are separately removed from the respective fractionation zones. The first and second fractionation overhead streams are combined to produce a combined fractionation overhead stream that includes the desorbent. | 06-12-2014 |
| 20150101922 | SYSTEMS, APPARATUSES, AND METHODS FOR MOLECULAR TARGETING AND SEPARATION OF FEEDSTOCK FLUIDS - A system for molecular targeting and separating includes a microwave energy source; a vapor source; a column configured and positioned to receive microwave energy from the microwave energy source and vapor from the vapor source; and a condenser, the condenser in communication with the column, the condenser configured to condense the vapor after the vapor receives the microwave energy. | 04-16-2015 |
| 20150375135 | System and Process for Making Phenol and/or Cyclohexanone - A system configured to separate a cleavage reaction mixture comprising phenol, cyclohexanone, an amine salt, cyclohexylbenzene, and water, capable of producing high-purity phenol and cyclohexanone from cyclohexylbenzene hydroperoxide cleavage reaction mixture at high energy efficiency. | 12-31-2015 |
| 20160091224 | COMPLEXED NANOPARTICLE MATERIAL, COMPOSITION AND USE COMPRISING THE SAME FOR HEATING LIQUID - The present invention relates to complexed nanoparticle materials including metal sub-nanoparticles and chalcopyrite nano cores. The metal sub-nanoparticles are distributed on the surfaces of chalcopyrite nano cores. The complexed nanoparticle materials have improved light absorption property because the surface plasmon resonance of metal nanoparticle to effectively convert light into thermal energy. The complexed nanoparticle materials further include dispersants which are attached on the surface of the complexed nanoparticle materials. A solvent mixture with similar polarity can be separated by adding the complexed nanoparticle materials with dispersants, and then irradiating sunlight through a focusing component to the solvent mixture. | 03-31-2016 |
| 203051000 | At least two materials | 7 |
| 20100243424 | Extractive distillation of conjugated diene - A process for isolating a conjugated diene from a hydrocarbon mixture is disclosed. The process comprises distilling the hydrocarbon mixture in the presence of an extraction solvent comprising an N,N-dialkyl aliphatic amide and from 12 to 50 weight percent furfural to separate a distillate and a conjugated diene-rich extract; and recovering the conjugated diene from the extract. | 09-30-2010 |
| 20110005915 | METHOD FOR RECOVERING FLUOROCARBOXYLIC ACIDS - The invention relates to a method for recovering fluorocarboxylic acids from aqueous compositions containing said acids. The invention more particularly relates to the recovery of flourocarboxylic acids forming an azeotrope with water by contact with a strong acid. | 01-13-2011 |
| 20110114469 | Process and System for the Purification of Trichlorosilane and Silicon Tetrachloride - The present disclosure relates to processes and systems for purifying technical grade trichlorosilane and/or technical grade silicon tetrachloride into electronic grade trichlorosilane and/or electronic grade silicon tetrachloride. | 05-19-2011 |
| 203053000 | One material is water | 2 |
| 20110024283 | Ammonia Production And Water Purification - A method for purifying water and generating ammonia liquor is disclosed. Hydrogen, oxygen, organic matter contaminated water vapor, and ambient air, containing nitrogen, are provided to a combustion chamber. The hydrogen is combusted in the oxygen in the combustion chamber with the contaminated water vapor and nitrogen. The nitrogen is fixated. Water vapor is produced. The contaminated water vapor is heated to decontaminate the contaminated water vapor. The produced water vapor, fixated nitrogen, and organic matter decontaminated water vapor are exhausted from the combustion chamber. The generated water vapor, fixated nitrogen, and decontaminated water vapor are condensed to obtain ammonia liquor. Water is evaporated from the ammonia liquor to form purified water vapor and concentrate the ammonia liquor. | 02-03-2011 |
| 20130118892 | ISOLATION OF ACRYLIC ACID BY MEANS OF A DISTILLATION COLUMN HAVING A SIDE OFFTAKE - The present process separates acrylic acid from a composition containing acrylic acid and at least one accompanying product. The process first involves contacting the composition with an aqueous liquid stream to give a liquid solution of acrylic acid, accompanying product, and water. The water then forms an azeotrope with an entrainer, which is added to the solution. Distillation then separates the solution into an overhead product containing the azeotrope and a bottom product containing acrylic acid and accompanying product. The overhead product is separated into water and entrainer and the bottom product is separated in a distillation column into acrylic acid and accompanying product. The process provides a way to remove high- and low-boiling products with a small number of distillation columns. | 05-16-2013 |
| 203056000 | One additive an alcohol or ether | 2 |
| 20090107833 | Acetaldehyde removal from methyl acetate by distillation at elevated pressure - A method for removing acetaldehyde from a mixture of methyl acetate, methanol and acetaldehyde includes: (a) feeding the mixture of methyl acetate, methanol and acetaldehyde to a distillation column; (b) distilling the feed mixture of methyl acetate methanol and acetaldehyde at a pressure of 10 psig or more to generate an overhead vapor stream enriched in acetaldehyde as compared with the feed mixture and a residue stream depleted in acetaldehyde as compared with the feed mixture; and (c) withdrawing the residue stream depleted in acetaldehyde from the distillation column. | 04-30-2009 |
| 20120073953 | PROCESS FOR ISOLATING TETRAHYDROFURAN - A process which isolates tetrahydrofuran from a stream of tetrahydrofuran, alkanol and high boilers, by: (a) separating off a first stream of tetrahydrofuran and alkanol as azeotrope in a first distillation stage; (b) feeding part of the first stream into a reactor for esterifying maleic anhydride, giving a second stream of tetrahydrofuran and monoalkyl maleate; (c) separating the second stream into a third stream of monoalkyl maleate and a fourth stream of tetrahydrofuran in a second distillation stage; (d) feeding the fourth stream of tetrahydrofuran from the second distillation stage and the part of the first stream from (a) which is not fed to the reactor into a third distillation stage to obtain a product stream of tetrahydrofuran and a sixth stream of tetrahydrofuran and alkanol; (e) recirculating the sixth stream from the third distillation stage into the first distillation stage or the reactor in (b). | 03-29-2012 |
| 203057000 | Organic compound | 19 |
| 20080210541 | Distillation Process - The present invention relates to an improved process of distilling fermented mash, wherein one or more amylases and/or proteases are added to the fermentation mash before or during distillation. | 09-04-2008 |
| 20120312680 | ALKYLENE OXIDE SEPARATION SYSTEMS, METHODS, AND APPARATUSES - The disclosure relates to a process for separating propylene oxide for a crude propylene oxide stream, for example an intermediate stream from a PO/TBA process. The crude propylene oxide stream can be passed through an extractive distillation column. The distillation column is operated at a pressure in a range of greater than 25 up to 50 psig, and/or at a temperature in a range of from 70 to 150 degrees Celsius using C | 12-13-2012 |
| 203058000 | Heterocyclic | 4 |
| 20090026062 | Separation Of Chlorosilanes - Crude chlorosilane streams containing lower-boiling chlorosilanes and higher-boiling chlorosilanes are separated by contacting them with a distillation aid. The lower-boiling chlorosilanes are separated from the crude chlorosilane stream, and then the distillation aid and the higher-boiling chlorosilanes are separated from one another. The distillation aid is a mono-cyano-substituted organic compound, a nitro-substituted organic compound, a mono-cyano-substituted organosilicon compound, a nitro-substituted organosilicon compound, or a mixture thereof. These distillation aids increase the relative volatility of crude chlorosilane streams such as methyltrichlorosilane and dimethyldichlorosilane resulting in improved separation at lower capital and/or fixed costs. | 01-29-2009 |
| 20090166176 | METHOD FOR PURIFYING POLYMERIZABLE COMPOUNDS - Process for distillatively purifying polymerizable compounds using a high-boiling, inert, thermally long-term-stable substance as a boiling oil, characterized in that the boiling oil is disposed in the bottom of a rectification column. | 07-02-2009 |
| 20120067715 | METHOD FOR PURIFYING CARBOXYLIC ACIDS CONTAINING HALOGEN COMPOUNDS - In a process for purifying carboxylic acids comprising halogen compounds, the carboxylic acid is distilled in the presence of a nonvolatile auxiliary base, the halide of which is liquid at the boiling temperature of the carboxylic acid. The auxiliary base binds the hydrogen halide which is present in the carboxylic acid and/or has been eliminated from halogen compounds as a result of thermal action and lowers the vapor pressure thereof in this way, such that the hydrogen halide is held in the distillation bottoms and is not transferred into the distillate. Since the halide of the auxiliary base is liquid, the formation of solid deposits in the distillation apparatus is prevented. The carboxylic acid optionally also comprises at least one low boiler. | 03-22-2012 |
| 20130001065 | AROMATICS-RECOVERY PROCESS - The present invention comprises a process for recovery of sulfolane used in a solvent-extraction or extractive-distillation process. A recovery column for the sulfolane solvent comprises a liquid-jet ejector for maintaining the needed vacuum conditions, preferably using water as the liquid. | 01-03-2013 |
| 203059000 | Amine | 3 |
| 20080257711 | Process for debottlenecking a system for the separation of a conjugated diolefin - A process for debottlenecking a system for the separation of a conjugated diolefin the system including a first extraction section having an extractive distillation column and a stripping column and a second extraction section. The process includes the steps of withdrawing a first portion of an extract from the extractive distillation column, the extract having at least the first portion and a second portion, and transferring the first portion of the extract to a flash/separation vessel; separating the first portion of the extract into a vapor phase and a liquid phase by flashing in a flash/separation vessel; and combining the liquid phase of the separated first portion of the extract with the second portion of the extract to produce an extract feed for further processing. A system and process for the separation of a conjugated diolefin from a C | 10-23-2008 |
| 20100270140 | METHOD FOR SEPARATING TIOXANE FROM A TRIOXANE/FORMALDEHYDE/WATER MIXTURE BY MEANS OF PRESSURE CHANGE RECTIFICATION - A process for separating trioxane from a feed stream I comprising formaldehyde, trioxane and water, in which
| 10-28-2010 |
| 20110272270 | Process for Preparing Polymethylols - The present invention relates to a process for recovering components from a low boiler mixture which is obtained in the distillation of hydrogenation effluents from the preparation of polymethylols, by multistage distillation of the low boiler mixture comprising a tertiary amine, water, methanol, polymethylol of the formula (I) | 11-10-2011 |
| 203060000 | Ester | 1 |
| 20130105296 | PURIFICATION METHOD OF 2,3,3,3-TETRAFLUOROPROPENE | 05-02-2013 |
| 203062000 | Aldehyde or ketone | 1 |
| 20120261252 | PROCESSES FOR SEPARATION OF 2,3,3,3-TETRAFLUOROPROPENE FROM HYDROGEN FLUORIDE BY AZEOTROPIC DISTILLATION - Disclosed herein are processes for separation of 2,3,3,3-tetrafluoropropene and hydrogen fluoride using azeotropic distillation. Additionally, disclosed are processes for separating mixtures of 2,3,3,3-tetrafluoropropene, hydrogen fluoride and 1,1,1,2,3-pentafluoropropane (HFC-245eb) and/or 1,1,1,2,2-pentafluoropropane (HFC-245cb) by azeotropic distillation. | 10-18-2012 |
| 203063000 | Alcohol or ether | 2 |
| 20090200154 | Process for purification of 2-chloro-5-chloromethyl-1,3-thiazole - The present invention provides a process for purifying 2-chloro-5-chloromethyl-1,3-thiazole represented by the formula (I): | 08-13-2009 |
| 203066000 | Methanol | 1 |
| 20080230369 | Propylene oxide recovery process - Product propylene oxide in a reaction mixture resulting from the reaction of propylene, oxygen and hydrogen or from the reaction of propylene and hydrogen peroxide is separated from propylene and/or propane by extractive distillation using methanol and/or water extractive distillation solvent. | 09-25-2008 |
| 203067000 | Halogenated hydrocarbon | 3 |
| 20100314240 | Process of extracting aromatic compounds from plants using bromomethane as a solvent - An extracting process includes adding 30 g of honeysuckle into a first flask in a cooling bath; adding 150 g bromomethane as a solvent into the first flask and sealing the first flask so that the solvent dissolves the honeysuckle powder to form a solution after about 15 hours; removing the first flask; and connecting the first flask to a first second flask and connecting a third flask to a last second flask wherein the second flasks are interconnected, each second flask is placed in another cooling bath, the third flask is placed in still another cooling bath, the solution evaporates to flow the vaporized aromatic compounds thereof to the second flasks for absorption by aromatic compounds absorbent fluid contained in each second flask, and the vaporized bromomethane of the solution reaches the third flask to be cooled and collected in the form of liquid. | 12-16-2010 |
| 20120006672 | METHOD FOR SEPARATING HEXAFLUOROPROPYLENE OXIDE FROM HEXAFLUOROPROPYLENE - The present invention provides a novel method for separating hexafluoropropylene oxide (HFPO) from hexafluoropropylene (HFP), which is capable of reducing the burden on the environment. A mixture including HFPO and HFP is subjected to an extractive distillation operation using, as a solvent, at least one of a fluorine-containing saturated compound represented by the general formula C | 01-12-2012 |
| 20120305382 | PROCESSES FOR SEPARATION OF FLUOROOLEFINS FROM HYDROGEN FLUORIDE BY AZEOTROPIC DISTILLATION - The present disclosure relates to a process for separating a fluoroolefin from a mixture comprising hydrogen fluoride and fluoroolefin, comprising azeotropic distillation both with and without an entrainer. In particular are disclosed processes for separating any of HFC-1225ye, HFC-1234ze, HFC-1234yf or HFC-1243zf from HF. | 12-06-2012 |
| 203068000 | Hydrocarbon | 3 |
| 20130284584 | PROCESS FOR SEPARATING ETHYLENE GLYCOL AND 1, 2-BUTANEDIOL - The present invention relates to a process for separating ethylene glycol and 1,2-butanediol. A material flow containing ethylene glycol and 1,2-butanediol gets into the lower-middle part of the azeotropic rectification column C | 10-31-2013 |
| 203070000 | Acyclic | 2 |
| 20120073954 | RECOVERY OF ACETONITRILE FROM A WASTE STREAM - In an acetonitrile recovery process a waste stream containing methanol and acetonitrile is mixed with hexane and distilled to form a condensate having two layers, a top layer of containing hexane and a bottom layer of methanol and acetonitrile, where selective removal of one or both of these layers allows for a column bottoms product containing at 98 wt. % acetonitrile to be recovered. | 03-29-2012 |
| 20160090339 | METHOD FOR REFINING DICYCLOPENTADIENE - A first method for refining dicyclopentadiene of the present invention is characterized in that the method separates and recovers dicyclopentadiene by distilling the crude dicyclopentadiene that contains dicyclopentadiene and is obtained by removing a C5 fraction and a BTX fraction from the reaction product obtained by dimerization reaction of the cracked gasoline by-produced in an ethylene plant that uses as feed stock a C2 fraction, a C3 fraction and a C4 fraction. A second method for refining dicyclopentadiene of the present invention is characterized in that the dicyclopentadiene-containing fraction refined by distillation is brought into contact with an inert gas or a hydrocarbon gas having 1 to 3 carbon atoms. | 03-31-2016 |
