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Class 95/41 - And solid sorption


Subclass of Class 95 - Gas separation: processes
Definition: Process in which a solid sorbent is used to remove a constituent
No. of patents: 63
Last issue date: 11/22/2011


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NumberTitleIssue Date
8062613Apparatus and process for isomerizing a hydrocarbon stream
An apparatus and process for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon which includes a first drier and a second drier; and a reaction zone communicating with at least the first drier. The first drier op...
11/22/2011
7632337Air prepurification for cryogenic air separation
The present invention relates to cryogenic air separation processes and systems that employ a pressure swing adsorption (PSA) prepurification process. It is advantageous to operate the PSA process at a pressure comparable to or below the operating pressure of the hi...
12/15/2009
7316728Method and apparatus for treating fluids
The present invention is directed to an apparatus for combining a component from a fluid composition with a reactive fluid. The apparatus includes a hollow fiber contactor (142) having a plurality of hollow fibers contained within a housing. A reactive fluid ...
01/08/2008
7300498Regeneration of adsorption beds using heated nitrogen
A system and method for removal of solvents, or other materials, from an exhaust stream, uses an active adsorption bed and a bed that is periodically regenerated. Electrically heated nitrogen may be used to regenerate the beds. A portion of the exhaust stream to be ...
11/27/2007
7285203Method and apparatus for instrumental analysis in remote locations
The present invention provides a method and apparatus for instrumental analysis in remote locations. In one embodiment, the present invention provides a method of controlling cathodic protection being applied to a metal structure having a surface disposed in an elec...
10/23/2007
7258725Gas supplying method and system
Gas supplying method and system in which effective component gas in exhaust gas can be separated and purified efficiently to be resupplied regardless of variation in the flow rate or composition of the exhaust gas and consumed gas can be replenished efficiently. In ...
08/21/2007
7231784Method for producing liquefied natural gas
A method for producing liquefied natural gas employing two separate adsorption steps for removing water and carbon dioxide from natural gas and employing a subambient expansion to produce regeneration gas for the regeneration of the dehydration adsorption step in ad...
06/19/2007
7225637Integrated air compression, cooling, and purification unit and process
Process and apparatus for optimization of integrated air separation systems. In an integrated process for the compression, cooling, and purification of air, an adiabatic compressor compresses an air stream to produce a compressed air stream. The compressed air strea...
06/05/2007
7179324Continuous feed three-bed pressure swing adsorption system
A three-bed pressure swing adsorption system providing a constant continuous supply gas, preferably containing a hydrogen component, in a multi-step and preferably in a twelve-step, process cycle that can produce a purified gas product, preferably hydrogen, on a con...
02/20/2007
7153344Process for the preparation and recovery of carbon dioxide from waste gas or fumes produced by combustible oxidation
A process for the separation and recovery of carbon dioxide from waste gases produced by combustible oxidation is described comprising the steps of feeding a flow of waste gas to a gas semipermeable material, separating a gaseous flow comprising high concentrated ca...
12/26/2006
7101415Methods for regenerating process gas purifier materials
A continuous method of producing a process fluid gas from a feed stream that includes the process fluid and impurities. The method includes: (a) providing a first and second vessel, each vessel containing one or more regenerable purifier materials for removing at le...
09/05/2006
7070393Method for regulating a compressor installation with a dryer and compressor installation used therewith
The invention relates to a method for regulating a compressor installation with at least one compressor element (6) driven by a motor and, in the pressure conduit (11) thereof, a dryer (2) of the type comprising a pressure vessel (24) wit...
07/04/2006
RE39122Regenerative compressed air/gas dryer
A system for drying a gas, such as air, includes a source of gas to be dried, a multistage compressor having an inlet connected to the source, and a dryer connected interstage to the compressor and to the outlet of the compressor. The dryer is connected interstage t...
06/13/2006
6968700Power systems
A method for producing electrical power which, in certain aspects, includes producing a water/methanol mixture and feeding it to converting apparatus that produces a feed stream with hydrogen, carbon dioxide, and steam; recovering hydrogen from the feed stream and f...
11/29/2005
6964692Carbon monoxide adsorption for carbon monoxide clean-up in a fuel cell system
An apparatus removes carbon monoxide (CO) from a hydrogen-rich gas stream in a hydrogen fuel cell system. CO fouls costly catalytic particles in the membrane electrode assemblies of proton exchange membrane (PEM) fuel cells. A vessel houses a carbon monoxide adsorbe...
11/15/2005
6960243Production of drinking water from air
A method and apparatus for the extraction of water from a gas stream, such as atmospheric air. The method includes contacting the gas stream with a porous adsorbent material having a surface modifying agent adsorbed on the surface of a porous support. The surface mo...
11/01/2005
6923845Membrane air dryer for vehicle air brake system
An air drying system for a vehicle including a membrane air dryer is provided. The air dryer is supplied with a stream of compressed air that has a low and constant concentration of oil vapor. A coalescing filter element may be used to maintain the oil vapor concent...
08/02/2005
6911064Method and apparatus for the preparation of clean gases
A method and apparatus for preventing contamination of a substrate or a substrate surface, and particularly relates to prevention of contamination of raw materials, semi-finished products, base materials of products and substrate surface in a high-tech industry such...
06/28/2005
6878185Method for separating fuel vapour-air mixtures and device for carrying out said method
The subject of the present invention is a method and a device for the separation of fuel-vapor/air mixtures into their components, in particular for purification of vapor mixtures, such as occur in fuel tanks of motor vehicles. A preseparator is arranged between the...
04/12/2005
6878186Pure vacuum swing adsorption system and apparatus
A pure vacuum swing adsorption/desorption system and method, wherein supplied air feedstock gas is consistently separated to obtain a high-purity oxygen end-product gas mixture, is described. The system and method separate high-purity oxygen product from air by sequ...
04/12/2005
6755975Separation process using pervaporation and dephlegmation
A process for treating liquids containing organic compounds and water. The process includes a pervaporation step in conjunction with a dephlegmation step to treat at least a portion of the permeate vapor from the pervaporation step. The process yields a membrane res...
06/29/2004
6576043Recovery of nitrogen and light hydrocarbons from polyalkene purge gas
A method for the separation of a gas mixture comprises (a) obtaining a feed gas mixture comprising nitrogen and at least one hydrocarbon having two to six carbon atoms; (b) introducing the feed gas mixture at a temperature of about 60° F. to about 105° ...
06/10/2003
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
6511525Method and apparatus for extracting water from air using a desiccant
The present invention provides a method and apparatus for extracting liquid water from moist air using minimal energy input. The method can be considered as four phases: (1) adsorbing water from air into a desiccant, (2) isolating the water-laden desiccan...
01/28/2003
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
6224677Gas recovery unit utilizing dual use of gas
A CVD device A is provided which is equipped with a gas introduction part A3 having an inert gas supply part G1 for supplying a diluting inert gas and a cleaning gas supply path G2 for supplying a cleaning gas, each connected therewith, and equipped with ...
05/01/2001
6221130Method of compressing and drying a gas and apparatus for use therein
A method and apparatus for compressing and drying a gas, typically air, are provided in which a multistage compressor is employed to produce interstage and final stage compressed gas. Regenerative adsorbent is employed to dry the final stage compressed ga...
04/24/2001
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
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
5759237Process and system for selective abatement of reactive gases and recovery of perfluorocompound gases
Processes and systems to recover at least one perfluorocompound gas from a gas mixture are provided. In one embodiment the inventive process comprises the steps of a) providing a gas mixture comprising at least one perfluorocompound gas and at least one c...
06/02/1998
5759236Energy-saving process for the separation of organic compounds from gases
A process for separating organic compounds, such as solvents, from gases, e.g. waste gases of paint shops. The gases to be treated are conducted in an adsorber over a sorbent which is composed of particulate activated carbon in an oxidic carrier. The char...
06/02/1998
5753007Oxygen production by ion transport membranes with non-permeate work recovery
Oxygen is recovered from a hot, compressed oxygen-containing gas, preferably air, by an oxygen-selective ion transport membrane system. Hot, pressurized non-permeate gas from the membrane is cooled and useful work is recovered therefrom by expansion at te...
05/19/1998
5738710Control method and apparatus for material adsorbed on adsorbent, and solvent recovering method and apparatus using same
The invention provides a method and apparatus for recovering a target material including using an adsorbent such as activated charcoal, the target material recovered in a continuous manner, as well as a method and an apparatus for recovering a solvent bas...
04/14/1998
5730778Fluid fractionator
A rotary valve at the inlets of a plurality of columns cyclically (1) selects first columns on a cyclic basis to receive compressed air, adsorb nitrogen and other components in the compressed air and pass oxygen and argon to a user (e.g. patient), second ...
03/24/1998
5701763Cryogenic hybrid system for producing low purity oxygen and high purity nitrogen
A hybrid system for producing both low purity oxygen and high purity nitrogen at high product recovery rates wherein desorption effluent from an adsorbent system feeds a cryogenic rectification column and, preferably, bottom fluid from the column provides...
12/30/1997
5658369Recovery of substances from exhaust streams
A method for the collection and subsequent regeneration of substances exhausted through a vacuum pump. In a first phase, an exhaust stream from the pump to an adsorption bed in which one or more components of the stream are adsorbed. In a second phase, ad...
08/19/1997
5637259Process for producing syngas and hydrogen from natural gas using a membrane reactor
Novel procedures are described for the production of syngas fuel intermediates from abundantly available natural gas. The novel procedures include: (a) providing a double tubular hydrogen transfer reactor having an inner tubular wall defining a heated rea...
06/10/1997
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
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