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| Number | Title | Issue Date |
| 7435285 | Adsorption mass and method for removing carbon monoxide from flows of material Carbon monoxide is removed from flows of material by means of adsorption to a adsorption mass containing copper, zinc, and zirconium. ... | 10/14/2008 |
| 7404846 | Adsorbents for rapid cycle pressure swing adsorption processes Method for the separation of a gas mixture comprising providing a PSA system with at least one adsorber vessel containing adsorbent material that is selective for the adsorption of carbon monoxide and nitrogen, passing a feed gas mixture containing at least hydrogen... | 07/29/2008 |
| 7399341 | Gas purification process A process for the purification of hydrogen based gas mixtures utilizing zeolite X wherein the particle size distribution of the zeolite X powder has a coefficient of variation from about 15% to about 30%. ... | 07/15/2008 |
| 7300899 | Lithium exchanged zeolite X adsorbent blends A lithium exchanged zeolite X adsorbent blend with improved performance characteristics produced by preparing a zeolite X, preparing a binder which includes highly dispersed attapulgite fibers wherein the tapped bulk density of the highly dispersed attapulgite fiber... | 11/27/2007 |
| 7294172 | Helium recovery A gas recovery system comprising a source of gas having a preselected concentration of a desired component (9), at least one application (1) that adds impurities to said gas, and at least one an adsorption system (6) that purifies said gas to pr... | 11/13/2007 |
| 7276095 | Fuel processor module for hydrogen production for a fuel cell engine using pressure swing adsorption A stand-alone fuel processor (10) for producing hydrogen from a hydrocarbon fuel for a fuel cell engine in a vehicle. The fuel processor (10) includes a primary reactor (14) that dissociates hydrogen and other by-products from the hydrocarbon fu... | 10/02/2007 |
| 7250150 | Chemical reactor with pressure swing adsorption A chemical reaction is performed with separation of the product(s) and reactant(s) by pressure swing adsorption (PSA), using an apparatus having a plurality of adsorbers cooperating with first and second valve assemblies in a PSA module. The PSA cycle is characteriz... | 07/31/2007 |
| 7194891 | High-temperature gas sensors A method of sensing the amount of a gas in a fluid flow includes operating an acoustic wave (AW) sensor at a first resonant frequency. The AW sensor includes a high temperature stable piezoelectric plate coupled to a first gas-absorbing layer. Also included is combi... | 03/27/2007 |
| 7189280 | Adsorptive separation of gas streams A method and system for adsorptive separation of a feed gas mixture provides for increased system efficiency and product recovery. The requirement for purge gas streams consuming desired product gas to regenerate adsorption beds is reduced through an inventive metho... | 03/13/2007 |
| 7101415 | Methods 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 |
| 7049259 | Molecular sieve layers and processes for their manufacture Layers comprising a molecular sieve layer on a porous or non-porous support, having uniform properties and allowing high flux are prepared from colloidal solutions of zeolite or other molecular sieve precursors (particle size less than 100 nm), by deposition, e.g., ... | 05/23/2006 |
| 7041272 | Systems and processes for providing hydrogen to fuel cells A process and system for providing a hydrogen-containing gas stream to a fuel cell anode that includes providing a hydrogen-containing gas stream that includes carbon monoxide, introducing the hydrogen-containing gas stream into a pressure swing adsorption module th... | 05/09/2006 |
| 7025801 | Method for controlling a unit for the treatment by pressure swing adsorption of at least one feed gas The treatment unit comprises N adsorption units, N being greater than or equal to 1, operating on a parametrized cycle split uniformly into at most N phase times. Further more, use is made of a control unit for controlling the treatment unit, designed to modify at l... | 04/11/2006 |
| 7011693 | Control of a hydrogen purifying pressure swing adsorption unit in fuel processor module for hydrogen generation A PSA unit for purifying hydrogen in a fuel processor system. The PSA unit employs rotary valves that cycle the pressurization of vessels, including an adsorbent, between a high pressure state and a low pressure state. The purified hydrogen is released from the vess... | 03/14/2006 |
| 6989044 | Intermolecularly bound transition element complexes for oxygen-selective adsorption A process and composition for selectively adsorbing oxygen from a gaseous mixture. The chemisorption is carried out by a porous three-dimensional transition element complex comprised of intermolecularly bound TEC units, said units further comprised of at least one m... | 01/24/2006 |
| 6918948 | Process for use of molecular sieve adsorbent blends A Process for the production and uses of a molecular sieve adsorbent blend product with improved performance characteristics produced by preparing a zeolite powder, preparing a highly dispersed attapulgite fiber binder, mixing the zeolite powder with the highly disp... | 07/19/2005 |
| 6913638 | Method for separating hydrogen gas Product gas (Gpro) is separated from material gas (Gmat) by a PSA process utilizing a plurality of adsorption towers (A-C) each loaded with an adsorbent. The separation of the product gas (Gpro) is performed by repeating a cycle comprising an adsorption step, a deco... | 07/05/2005 |
| 6911065 | Method and system for supplying high purity fluid A fluid purifying apparatus that includes a manifold that includes a first branch and a second branch, a first check valve coupled to the first branch of the manifold, and a purifier unit that includes a first end and a second end, wherein the first end is coupled t... | 06/28/2005 |
| 6893483 | Multilayered adsorbent system for gas separations by pressure swing adsorption A gas adsorption composite a high density adsorbent including a high density layer having a first density of at least 0.3 g/cc; and a low density adsorbent having a low density layer having a second density of less than 0.3 g/cc, wherein the high density adsorbent i... | 05/17/2005 |
| 6849106 | Method for purifying hydrogen-based gas mixtures using a calcium x-zeolite Conducting a PSA process for the purification of gaseous hydrogen contaminated at least with CO and N2 of the H1 where the gas stream to be purified is passed through an adsorption region comprising at least one adsorbent based on zeolite 5A an... | 02/01/2005 |
| 6824589 | Materials and methods for the purification of inert, nonreactive, and reactive gases Regenerable gas purifier materials are provided capable of reducing the level of contaminants such as oxygen and water in an inert, nonreactive or reactive gas stream to parts-per-billion levels or sub-parts-per-billion levels. The purifier materials of this inventi... | 11/30/2004 |
| 6709482 | Method for reducing trace impurities from a reactive fluid using preconditioned ultra-low emission carbon material Trace impurities such as organic compounds and carbon monoxide in reactive fluids such as ammonia, hydrogen chloride, hydrogen bromide, and chlorine are reduced to sub-ppb levels using gas purifying systems that contain a preconditioned ultra-low emission (P-ULE) ca... | 03/23/2004 |
| 6689194 | Fuel cell system having a replaceable getter element for purifying the fuel supply Oxides of carbon and other impurities are removed from a hydrogen fuel supply stream (12) for a fuel cell (30). A getter element (20) sufficient for chemisorbing the oxides of carbon from the hydrogen is removably connected to the fuel cell anode side. Th... | 02/10/2004 |
| 6660064 | Activated carbon as sole absorbent in rapid cycle hydrogen PSA A pressure swing adsorption process for recovering a product gas from a feed gas, includes: supplying a pressure swing adsorption apparatus including an adsorbent composition containing activated carbon as a major ingredient, wherein the adsorbent composi... | 12/09/2003 |
| 6652626 | Agglomerated adsorbent, process for the production thereof and use thereof for the non-cryogenic separation of industrial gases A description is given of agglomerates of faujasite X with an Si/Al ratio of 1, the inert binder of which, on the one hand, has been converted to active zeolite by conversion to zeolite in an alkaline liquor, and which have been subjected, on the other ha... | 11/25/2003 |
| 6638340 | Composite adsorbents for air purification Applicant has developed an improved adsorbent useful in removing contaminants from various air streams. The adsorbent contains a zeolite, an alumina and a metal component. The metal component is present in an amount at least 10 mol-% of the stoichiometric... | 10/28/2003 |
| 6630012 | Method for thermal swing adsorption and thermally-enhanced pressure swing adsorption The present invention provides compact adsorption systems that are capable of rapid temperature swings and rapid cycling. Novel methods of thermal swing adsorption and thermally-enhanced pressure swing adsorption are also described. In some aspects of the... | 10/07/2003 |
| 6607584 | Adsorbent with improved mass transfer for a VSA or PSA process A formed adsorbent material includes an adsorbent solid phase and a gas phase ensuring transport of the gaseous components right to the adsorbent, being such that the constants for the transport kinetics of the components adsorbable in the gas phase and i... | 08/19/2003 |
| 6605136 | Pressure swing adsorption process operation and optimization A pressure swing adsorption process which comprises introducing a feed gas mixture into an inlet of an adsorber vessel during a feed period, wherein the feed gas mixture contains a more strongly adsorbable component and a less strongly adsorbable componen... | 08/12/2003 |
| 6572681 | Purification of gases Carbon monoxide (CO) is removed from a nitrogen and CO containing gas stream such as feed air to an air separation process for recovery of a nitrogen product gas stream or a nitrogen product gas stream from an air separation process by adsorbing CO from s... | 06/03/2003 |
| 6565627 | Self-supported structured adsorbent for gas separation A rapid pressure swing adsorption (RPSA) process includes the use of an adsorbent fabric. The fabric can be self-supporting, have an average pore diameter greater than 5 Å and/or have a carbon dioxide mass transfer coefficient of at least 0.5 sec-1.... | 05/20/2003 |
| 6565628 | Pressure swing adsorption process with reduced pressure equalization time A method to reduce the cycle time in a pressure swing adsorption process by reducing the required pressure equalization time in a cycle, thereby reducing the overall cycle time and increasing product recovery per unit of adsorbent used. This reduces the a... | 05/20/2003 |
| 6551380 | Recovery 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 |
| 6514317 | Method for purifying hydrogen-based gas mixture Purification of a hydrogen-based gas mixture containing impurities such as carbon monoxide, nitrogen and methane is effected by contacting the gaseous mixture with a zeolite adsorbent which is a shaped product comprised of at least 95%, as determined on t... | 02/04/2003 |
| 6503299 | Pressure swing adsorption process for the production of hydrogen This invention provides a two bed pressure swing adsorption process for recovering a primary gaseous component at a purity of over 99% from a feed gas comprising the primary component and one or more impurities. One such process includes: (a) passing the ... | 01/07/2003 |
| 6491740 | Metallo-organic polymers for gas separation and purification The present invention provides for methods and compositions for gas separation and purification utilizing a metallo-organic polymer adsorbent in processes for separating carbon dioxide, water, nitrogen oxides and hydrocarbons from gas streams. The metallo... | 12/10/2002 |
| 6464756 | Purification of hydrogen flowstreams by selectively adsorbing impurities therefrom Predominantly hydrogen gaseous flowstreams containing contaminating amounts of at least carbon monoxide and/or nitrogen impurities are purified by PSA adsorption of such impurities therefrom, via transport over a faujasite zeolite adsorbent, the Si/Al rat... | 10/15/2002 |
| 6454838 | Six bed pressure swing adsorption process with four steps of pressure equalization A pressure swing adsorption process includes providing a pressure swing adsorption apparatus having six beds, and equalizing a pressure of each of the six beds in four steps, wherein at all times during the process, at least one of the six beds is providi... | 09/24/2002 |
| 6447572 | Method of regulating a fluid treatment plant, fluid treatment plant and application of such a plant to the production of a constituent of air A compression machine (compressor 4 and/or pump 5) of the plant (1) for the treatment of a fluid, typically by pressure swing adsorption, comprises at least one detector (7) for detecting clearance between a moving part (6) and a stator and delivering a m... | 09/10/2002 |
| 6425939 | Process for the production of hydrogen using a carbonated adsorbent with selected dubinin parameters A process for the purification of a gaseous hydrogen flow containing one or more gaseous impurities from the group consisting of carbon monoxide, water vapor, nitrogen, H2 S, chlorine, C1 -C3 light alcohols, ammonia, carbo... | 07/30/2002 |
