Class 95/190 - By liquid-liquid extraction or formation of azeotrope

Subclass of Class 95 - Gas separation: processes
Definition: Process in which (a) a liquid extractant is mixed with the
No. of patents: 22
Last issue date: 11/28/2006

Number	Title	Issue Date
7141094	Azeotrope-like compositions of iodine heptafluoride and hydrogen fluoride Provided are azeotrope-like compositions comprising iodine heptafluoride and hydrogen fluoride and uses thereof, including methods for separating iodine heptafluoride or hydrogen fluoride from a mixture comprising iodine heptafluoride and hydrogen fluoride by removi...	11/28/2006
6881243	Method for removing acidic gases from waste gas A method for removing acidic gases from waste gases is disclosed. The invention relates to a method for removing acid gases, in particular from SO2 and NOx, by contacting the waste gas with an emulsion of water in organic sulfoxides, in particu...	04/19/2005
6475266	Exhaust gas recovery method and apparatus An exhaust gas recovery method and apparatus including: a first process in which volatile organic compound gas in exhaust gas from a exhaust gas discharging source is absorbed into water by a scrubber; a second process in which water including the volatil...	11/05/2002
6436368	Process for preparing beclomethasone dipropionate freon.RTM. clathrate Described is a process for preparing beclomethsaone dipropionate Freon.RTM. clathrate comprising the use of an agent which selectively binds methanol to selectively remove methanol from a mixture of methanol and Freon.RTM. 11 containing beclomethasone dip...	08/20/2002
6334886	Removal of corrosive contaminants from alkanolamine absorbent process A process is provided for removing CO2 and/or H2 S from a gas mixture containing as impurities CO2 and/or H2 S and at least one other impurity selected from the group consisting of a cyanide and ammonia. The pro...	01/01/2002
6267560	Wet gas compression method with evaporation of the liquid A wet gas compression device combining the following stages: a separation stage providing a gas phase and a liquid phase; a conversion stage for converting a gas phrase and a liquid phase; a conversion stage for converting the liquid phase provided by the...	07/31/2001
6245128	Process for the reclamation of spent alkanolamine solution A process for the reclamation of spent aqueous alkanolamine solutions by contacting a spent aqueous alkanolamine solution with a strong base ion exchange resin for time sufficient to sorb from the aqueous alkanolamine solution at least a portion of the ac...	06/12/2001
5462582	Separation and concentration method based on selective absorption When a vapor-phase mixture is brought in contact with a liquid absorbent kept at a temperature above the condensation temperature of the vapor-phase mixture, the vapor-phase mixture becomes concentrated for those components which are absorbed by the absor...	10/31/1995
5254256	Process for reclamation and treatment of paint overspray treatment compositions A process for treating spent aqueous emulsion material formed from a non-volatile hydrocarbon organic portion having a paint solids content greater than about 10% by weight in which the spent emulsion is broken and the organic phase is admixed with suffic...	10/19/1993
5157202	Gas absorption for separation of hydrocarbons For recovery of low-boiling hydrocarbons by scrubbing, the crude gas mixture which contains low-boiling and high-boiling hydrocarbons, is treated with a scrubbing agent, by which the high-boiling components are scrubbed-out of the gas mixture. The loaded ...	10/20/1992
4844721	Air scrubbing process An aqueous liquid containing unsaturated vegetable, marine or land animal oil or liquid fat, preferably drying or semidrying oil, is used as a scrubbing liquid to remove pollutant from an air stream. Specifically, styrene constituting an air pollutant is ...	07/04/1989
4775395	Integrated process for the treatment of a methane-containing wet gas in order to remove water therefrom A gas containing methane and water is treated in order to remove water therefrom. The process comprises a step of contacting the gas with a liquid phase formed of water and solvent, whereby water free of solvent can be removed, and a subsequent step of co...	10/04/1988
4636284	Process for the separation of water from a water-containing mixture or azeotrope with an extractant, and for the separation of water from said extractant A process for the separation of water from a water-containing mixture of azeotrope, with an extractant which removes water from the mixture or azeotrope, recovery of the non aqueous portion of the mixture or azeotrope as a product, and regeneration of the...	01/13/1987
4528001	Method of recovering volatile organic matters A method of recovering volatile organic matter such as fuels and organic solvents from a gas or gas mixture containing the organic matter, characterized by subjecting a gas or gas mixture, having diffused thereinto sparingly water-soluble or water-insolub...	07/09/1985
4523932	Hydrotropes and uses thereof A method for using an aqueous hydrotrope solution to remove at least a portion of a solvent from a stream of air containing the solvent, wherein the method comprises introducing the stream of air containing the solvent into a scrubber containing an effect...	06/18/1985
4444573	Hydrotropes and uses thereof A method for using an aqueous hydrotrope solution to remove at least a portion of a solvent from a stream of air containing the solvent, wherein the method comprises introducing the stream of air containing the solvent into a scrubber containing an effect...	04/24/1984
4263019	Vapor recovery Volatile liquid, such as benzene, isoprene, cyclopentadiene, butadiene present as a vapor in a blanket gas released from a storage zone for the liquid is absorbed from the gas by use of an absorption oil, followed by contacting of the rich absorption oil ...	04/21/1981
4162145	Regeneration of liquid absorbents A method for separating two liquid components from a mixture by distilling the mixture in the presence of a third liquid which is immiscible at least with the component having the higher boiling point with the third liquid having a boiling range from at l...	07/24/1979
4049782	Process for producing pure concentrated ammonia A process for the recovery of pure concentrated ammonia in which the gaseous products of coal gasification or degassing are condensed or are washed with water to produce a phenolic-containing liquid phase (gas water), this liquid is dephenolated by extrac...	09/20/1977
4029552	Process for obtaining high purity perfluoro-n-heptane A process is disclosed for obtaining a high purity perfluoro-n-heptane from an electrochemical fluorination product which comprises perfluoro-n-heptane, n-heptane, partially fluorinated heptanes, and water soluble acidic components such as hydrofluoric ac...	06/14/1977
4011066	Process of purifying gases produced by the gasification of solid or liquid fossil fuels A process of purifying gases produced by a gasification of fossil fuels wherein the gas is cooled and scrubbed under superatmospheric pressures at normal temperatures while the raw gas, at a temperature of 150°-170° C, is indirectly cooled to ambient te...	03/08/1977
4005997	Gas dehydration with liquid desiccants and regeneration thereof Natural or industrial gas streams are dehydrated with liquid organic desiccants and the desiccants are treated in a thermal reconcentration zone to remove a major portion of the water contained therein followed by treatment in an isothermal azeotroping zo...	02/01/1977

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Class 95/190 - By liquid-liquid extraction or formation of azeotrope