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Class 95/42 - And liquid contact (e.g., scrubbing, sorption, etc.)


Subclass of Class 95 - Gas separation: processes
Definition: Process in which a liquid is used to remove a constituent
No. of patents: 51
Last issue date: 10/11/2011


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NumberTitleIssue Date
8034159Method for removing hydrocarbons from a vapour-gas mixture and a device for carrying out said method
A method for cleaning hydrocarbons from a gas-vapor medium ejected to the atmosphere, formed while storing oil or gasoline or filling a container therewith is provided. The medium is pumped out and compressed in a gas-liquid jet apparatus due to energy of oil or gas...
10/11/2011
7377956Method and system for processing natural gas using a rotary screw compressor
Method and system for processing natural gas containing contaminants through the use of one or more rotary screw compressors. A natural gas containing a contaminant (e.g., water or carbon dioxide and/or hydrogen sulfide) and a contaminant removing agent are combined...
05/27/2008
7272955Cooling apparatus and process
An integrated cooling apparatus and process which includes a source of compressed gas; a cooling unit for cooling the compressed gas to form cooled compressed gas by heat exchange with water having a first purity, thereby producing a stream of cooled compressed gas ...
09/25/2007
7092153Temperature-controlled gas microscope
The invention enables construction of a microscope that has one or more advantageous characteristics as compared to previous microscopes. The microscope can be small and lightweight and, in particular, sufficiently small and light weight to be portable (e.g., smalle...
08/15/2006
7072103Microscope with objective lens position control apparatus
The invention enables construction of a microscope that has one or more advantageous characteristics as compared to previous microscopes. The microscope can be small and lightweight and, in particular, sufficiently small and light weight to be portable (e.g., smalle...
07/04/2006
7029589Universal method and apparatus for conversion of volatile compounds
A method or process of treating a contaminated fluid (10) having at least one contaminant having a property selected from the group consisting of being volatile, hazardous, tacky and a combination thereof is provided. The method comprises contacting the conta...
04/18/2006
7022295Installation for carrying out a three phase chemical reaction under pressure
A gas siphon type reactor (10) is used to carry out a three phase chemical reaction under pressure, such as the reduction of uranyl nitrate to uranous nitrate by hydrogen, in the presence of a catalyst made up of platinum on a silica carrier. The control of t...
04/04/2006
6955705Method and system for compressing and dehydrating wet natural gas produced from low-pressure wells
Method and system for compressing and dehydrating wet natural gas produced from a low-pressure well using a rotary screw compressor. A dehydrating agent is combined with wet natural gas within a rotary screw compressor. Operation of the rotary screw compressor cause...
10/18/2005
6912859Method and apparatus for using a main air compressor to supplement a chill water system
A method and an apparatus for providing make-up water for a chilled water system. A first water tower for cooling water is provided. Condensate water from a condensate water source is extracted. Make-up water for the first water tower is provided using the condensat...
07/05/2005
6551380Recovery of CO2 and H2 from PSA offgas in an H2 plant
A gas separation apparatus and process has a first pressure swing adsorption (PSA) unit (110) receiving feed gas (112), which comprises a first and a second component. First PSA unit (110) produces first product gas (114) pre-dominantly containing the fir...
04/22/2003
6383257Reclamation and separation of perfluorocarbons using condensation
An apparatus and process for separating perfluorocarbon compounds from a gas mixture passes an incoming stream of a gas into a cold trap, the gas stream including a plurality of perfluorocarbon compounds. The gas mixture is cooled within the cold trap to ...
05/07/2002
6350371Refinery process including membrane separation
An improved process and process train for catalytic reforming of hydrocarbons. In its most simple form, the invention includes four unit operations or steps: the reforming itself usually carried out in a series of reactors; one or more steps to separate t...
02/26/2002
6203596Process and apparatus for removing hydrogen and/or carbon monoxide from an air stream
The process serves for removing carbon monoxide and/or hydrogen from an air stream by catalytic oxidation. Dusts and/or aerosols of a particle size of less than 20 μm are removed from the air stream upstream of the catalytic oxidation....
03/20/2001
6071326Process for the production of naphtha gas from landfill gas
The production of naphtha gas from landfill gas is preferably accomplished through a gas purification step, a catalytic conversion of methane gas to hydrogen gas, and a blending step in which various process streams are blended to produce the naphtha gas ...
06/06/2000
5980609Hydrogen recovery process
A treatment process for a hydrogen-containing off-gas stream from a refinery, petrochemical plant or the like. The process includes three separation steps: condensation, membrane separation and hydrocarbon fraction separation. The membrane separation step...
11/09/1999
5928408Air separation
Air is separated in a double rectification column including a lower pressure rectification column. A first oxygen product containing less than 3.5% by volume of argon impurity is withdrawn through an outlet of the column which has a packed section below t...
07/27/1999
5879431Ethylene/nitrogen separation process
A membrane separation process for treating a gas stream containing methane and nitrogen, for example, natural gas. The separation process works by preferentially permeating methane and rejecting nitrogen. We have found that the process is able to meet nat...
03/09/1999
5871563Process for purifying inert gases
The invention relates to a process for the purification of an inert gas by subjecting the inert gas to a sorption treatment, especially gas scrubs. The invention comprises compressing the inert gas to a higher pressure before the sorption treatment, perfo...
02/16/1999
5830260Process for cleaning the waste gas from drying processes using heated gas
The waste gas accumulating in the drying of products containing volatile ingredients is cooled, the condensate obtained is subjected to crossflow membrane filtration and part of the cleaned waste gas is returned to the drying process. The concentrate obta...
11/03/1998
5774815Dry halide method for separating the components of spent nuclear fuels
The invention is a nonaqueous, single method for processing multiple spent nuclear fuel types by separating the fission- and transuranic products from the nonradioactive and fissile uranium product. The invention has four major operations: exposing the sp...
06/30/1998
5772734Membrane hybrid process for treating low-organic-concentration gas streams
A membrane hybrid process for treating organic-containing gas streams to remove or recover the organic. The process combines absorbent scrubbing, gas stripping, condensation, and membrane separation, and is particularly useful in treating high-volume, low...
06/30/1998
5741350Recovery of hydrocarbons from polyalkene product purge gas
Hydrocarbons are recovered from the product purge gas in an alkene polymerization process by absorption of heavier hydrocarbons from the purge gas by an intermediate hydrocarbon stream to yield a vapor rich in inert gas and alkene monomer. Alkene monomer ...
04/21/1998
5681360Landfill gas recovery
A process for concentrating and recovering methane and carbon dioxide from landfill gas includes absorption of commonly occurring pollutants using a reduced amount of carbon dioxide absorbent which itself may be an in situ derived and recoverable constitu...
10/28/1997
5611840Process for separating out hydrogen chloride
The invention relates to a process for separating out hydrogen chloride from a gas mixture forming in the chlorination of methane, which gas mixture contains unreacted methane, its chlorination products and hydrogen chloride formed in the reaction, by coo...
03/18/1997
5547491Procedure for the selective recovery of solvents from solvent gas mixtures and device for the realization of the procedure
A process and apparatus for the selective recovery of solvents from solvent gas mixtures according to which the solvent gas mixture undergoes a sorption process, individual solvent gas fractions are fractionally desorbed from the sorption agent, condensed...
08/20/1996
5538535Membrane process for treatment of chlorine-containing gas streams
A membrane process for separating chlorine from chlorine-containing gas streams is disclosed. The process employs a permselective membrane that is selective to chlorine and is stable in the long-term presence of chlorine. The process can be used to treat ...
07/23/1996
5533437Recovery of hydrocarbons from polyalkene product purge gas
Hydrocarbons are recovered from the product purge gas in an alkene polymerization process by absorption of heavier hydrocarbons from the purge gas by an intermediate hydrocarbon stream to yield a vapor rich in inert gas and alkene monomer. Alkene monomer ...
07/09/1996
5476536Process for removing harmful hydrocarbons, particularly plant protective aerosols and vapors, from the fresh air supplied to a vehicle cabin
The present invention relates to a process for removing harmful hydrocarbons, particularly plant protective aerosols and vapors, from the fresh air supplied to a vehicle cabin. The loaded fresh air is subjected to a partial condensation with subsequent ph...
12/19/1995
5453559Hybrid condensation-absorption olefin recovery
A hybrid condensation-absorption process and unit is disclosed for the recovery of olefins. A mixed-component stream containing hydrogen, methane and olefins is compressed and refrigerated against propylene refrigerant to partially condense the stream. Th...
09/26/1995
5447554Gas compression method and apparatus
A method for pressurizing a gas using a liquid. The method comprises providing a liquid pump; providing a liquid for introducing to the liquid pump; introducing a gas to the liquid prior to the liquid entering the liquid pump; pumping the liquid and the g...
09/05/1995
5306331Process for cooling the feed gas to gas separation systems
The present invention provides a process for utilizing one stream from a gas separation unit in an evaporation cooler to provide cool water which is used to cool the feed gas mixture by direct or indirect contact prior to entering the gas separation unit....
04/26/1994
4977745Method for the recovery of low purity carbon dioxide
A process for the economical recovery of carbon dioxide from a gas stream containing less than 85% carbon dioxide, by cooling the contaminating gas to remove water vapor, compressing the cooled gas to an elevated temperature and pressure, and drying the g...
12/18/1990
4935220Process for purifying crude gaseous hydrogen chloride
The invention relates to a process for purifyng crude gaseous hydrogen chloride originating from plants producing silane or siloxane and containing as impurities silanes which contain chlorine and/or organic radicals, water, alkanols, hydrocarbons, chlori...
06/19/1990
4916908Air separation
A process for the separation of air to obtain oxygen, nitrogen and argon is disclosed which comprises: subjecting air from which carbon dioxide and water have been removed to fractional distillation in a first column to form oxygen-nitrogen vapor and argo...
04/17/1990
4778489Process for separating a water insoluble distillate from an aqueous vapor
The distillate which is contained in the prescrubbed vapors from the fatty acid fractionation or deodorization of oils and fats is obtained by mixture condensation in a cooling fluid fed into a principal flow of said vapors. A side flow enriched in distil...
10/18/1988
4627922Method of removing dissolved oil from produced water
This invention involves a process and apparatus for removing dissolved and undissolved oil and chemical additives from waste and/or produced water streams. The process involves contacting a selected gas with the produced water stream, the selected gas uti...
12/09/1986
4566886Process and apparatus for obtaining pure CO
For obtaining pure CO from a gaseous mixture, consisting predominantly of hydrogen and carbon monoxide, e.g., that produced by the endothermic catalytic oxidation of hydrocarbons in the presence of CO2 as the oxygen-yielding agent the gaseous m...
01/28/1986
4563202Method and apparatus for purification of high CO2 content gas
Disclosed is a method and apparatus for separating and purifying carbon dioxide and natural gas contained in the associated gas of an oil well. Feed containing hydrocarbons, carbon dioxide, water and hydrogen sulfide, is fed to a stabilizer column where h...
01/07/1986
4466946CO2 Removal from high CO2 content hydrocarbon containing streams
Carbon dioxide is removed from CO2 and hydrocarbon containing gaseous streams. In the instance where the hydrocarbons and CO2 are such that hydrocarbons would condense out during CO2 removal, the gas stream is treated in o...
08/21/1984
4449994Low energy process for separating carbon dioxide and acid gases from a carbonaceous off-gas
A process is disclosed for the separation of carbon dioxide and sulfide gases from oil shale retort off-gases, coal gasification off-gases, oxygen fire-flooding or carbon dioxide miscible flood enhanced oil recovery off-gases for recycle to a retort, gasi...
05/22/1984
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