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| Number | Title | Issue Date |
| 7763100 | Vacuum pressure swing adsorption process and enhanced oxygen recovery Novel polybed VPSA process and system to achieve enhanced O2 recovery are disclosed. The VPSA process comprises using three or more adsorber beds; providing a continuous feed supply gas using a single feed blower to one bed, wherein at any instant during ... | 07/27/2010 |
| 7591880 | Fuel cell anode exhaust fuel recovery by adsorption A method of operating a fuel cell system includes providing a fuel inlet stream into a fuel cell stack, operating the fuel cell stack to generate electricity and a hydrogen containing fuel exhaust stream, separating at least a portion of hydrogen contained in the fu... | 09/22/2009 |
| 7452406 | Device and method for removing water and carbon dioxide from a gas mixture using pressure swing adsorption A pressure swing adsorption (PSA) dryer for separating water and carbon dioxide from a gas stream includes two compound adsorbent columns [32, 42]. Each column comprises a primary adsorption material for adsorbing water and a secondary adsorbent that adsorbs ... | 11/18/2008 |
| 7452407 | Production of carbon monoxide-free hydrogen and helium from a high-purity source The invention provides vacuum swing adsorption processes that produce an essentially carbon monoxide-free hydrogen or helium gas stream from, respectively, a high-purity (e.g., pipeline grade) hydrogen or helium gas stream using one or two adsorber beds. By using ph... | 11/18/2008 |
| 7402287 | Apparatus and methods for producing hydrogen An apparatus and method for producing hydrogen. The apparatus includes a fuel processor, a purification unit and a system controller. The controller determines a calculated flow of reformate from the fuel processor and operates the purification unit based on the cal... | 07/22/2008 |
| 7354562 | Simultaneous shift-reactive and adsorptive process to produce hydrogen A process for producing a high temperature COx-lean product gas from a high temperature COx-containing feed gas, includes: providing a sorption enhanced reactor containing a first adsorbent, a shift catalyst and a second adsorbent; feeding into... | 04/08/2008 |
| 7335246 | Contaminant adsorption and oxidation via the fenton reaction Contaminated fluids are treated by adsorbing contaminant onto a sorbent to concentrate the contaminant and then oxidizing the contaminant via the Fenton and related reactions. Iron is attached to the sorbent or can be added in solution with an oxidant. Both systems,... | 02/26/2008 |
| 7326821 | Removal of oxygenate from an olefin stream This invention is to a process for removing dimethyl ether from an olefin stream. The process includes contacting the olefin stream with a molecular sieve that has improved capacity to adsorb the dimethyl ether from the olefin stream. The molecular sieve used to rem... | 02/05/2008 |
| 7309378 | Syngas purification process The present invention relates to a process for purifying a syngas of the CO/H2 or N2/H2 type, which consists in removing CO2 and possibly other gaseous impurities (water, etc.) before the gas undergoes a cryogenic process.... | 12/18/2007 |
| 7306652 | Siloxane removal process Biogas released from landfills and sewage treatment plants is freed of siloxane contaminants by passing the biogas through a bed containing activated alumina, which absorbs the siloxanes. When the activated alumina becomes saturated with siloxanes, the absorption ca... | 12/11/2007 |
| 7306651 | Method for treatment of a gaseous mixture comprising hydrogen and hydrogen sulphide A method of treatment of a gas mixture which contains H2, H2S and possibly of other impurities, such as hydrocarbons. The treatment method is aimed at purifying the hydrogen mixture without incurring a overall pressure loss. The method accordin... | 12/11/2007 |
| 7285154 | Xenon recovery system A first aspect of a process of recovering xenon from feed gas includes: providing an adsorption vessel containing adsorbent having a Xe/N2 selectivity ratio 50% and... | 10/23/2007 |
| 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 |
| 7250073 | Life support oxygen concentrator Gas separation by pressure swing adsorption (PSA) and vacuum pressure swing adsorption (VPSA), to obtain a purified product gas of the less strongly adsorbed fraction of the feed gas mixture, is performed with an apparatus having a plurality of adsorbers. The adsorb... | 07/31/2007 |
| 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 |
| 7153985 | Ethylene oxide production A process for the formation of ethylene oxide wherein the presence of at least one hydrocarbon having four carbon atoms per molecule in the recycle loop gas of the process is used as an indicator of impending post-ignition conditions. ... | 12/26/2006 |
| 7150769 | Fuel reforming apparatus and method A fuel reforming apparatus includes a reforming reaction section in which a reforming catalyst is disposed, and a reformed fuel distribution chamber. A fuel air mixture of a hydrocarbon fuel and air is reformed in the reforming reaction section. The reformed fuel is... | 12/19/2006 |
| 7148392 | Separation of 1-butene from Cfeed streams In a process for selectively separating 1-butene from a C4 feed stream comprising at least 1-butene, cis-2-butene and trans-2-butene, the feed stream is passed through a first bed of an adsorbent comprising a crystalline microporous material to form a sub... | 12/12/2006 |
| 7121276 | Personal oxygen concentrator An oxygen separator for separating oxygen from ambient air utilizing a vacuum swing adsorption process has a mass of less than 2.3 kg. A carrier is mountable on a person to support the oxygen separator for ambulatory use. ... | 10/17/2006 |
| 7098462 | Microfabricated device for selectively removing and analyzing airborne particulates from an air stream One embodiment of the present invention provides a system for ionizing airborne particulates. The system includes an insulating substrate and a first electroplated structure on the insulating substrate. This first electroplated structure includes an anchor and a pro... | 08/29/2006 |
| 7036521 | Air conserving slide valve A slide type valve (V) for regulating a gas generating system (10) that has at least a first and a second gas concentrating bed unit (12, 14) includes an outer body (120) with a slide face (106) having at least three open ports (130, 1... | 05/02/2006 |
| 7029516 | Filters and methods of making and using the same Filters for removing particulate and gaseous organic and inorganic materials from a fluid stream are disclosed. The filters may contain a polymer matrix and optional sequestering agents. Methods of making filters are also disclosed. Methods of using filters to remov... | 04/18/2006 |
| 7029521 | Process and device in connection with the production of oxygen or oxygen enriched air Process in conjunction with the production of oxygen (22), wherein incoming air (10, 16, 16a, 16b,) is brought to pass through a sorbent/zeolite structure (18), which comprises at least three zeolite units (50a–f... | 04/18/2006 |
| 7022159 | Process and apparatus for treating a feed gas A process and an apparatus related to the reduction of the level of a component in a feed gas such as air involving passing the gas to at least three parallel thermal swing adsorption zones charged with an adsorbent and operating according to an adsorption cycle, wh... | 04/04/2006 |
| 7014683 | Method for the regeneration of humidity-laden process air and arrangement for carrying out said method A method for the regeneration of humidity-laden drying cartridges includes heating to 220 to 300° C. and introducing it into a drying cartridge for regeneration. Subsequent cooling of the drying cartridge is achieved by a partial stream of air diverted from the dri... | 03/21/2006 |
| 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 |
| 6929683 | Method and apparatus for pressure swing adsorption A pressure swing adsorption system including a pressure vessel having an opening and a valve manifold including a body having a first cavity fluidly connected to the opening. The body further includes a passage and a channel, such that the passage connects the chann... | 08/16/2005 |
| 6918953 | Modular pressure swing adsorption process and apparatus A pressure swing adsorption (PSA) system including a first group of PSA modules having a plurality of first PSA modules, and a second group of PSA modules having a plurality of second PSA modules. The system includes a feed gas manifold, a product manifold, and a wa... | 07/19/2005 |
| 6902602 | Gas separation by combined pressure swing and displacement purge The present disclosure relates to systems and processes for adsorptive gas separations where a first gas mixture including components A and B is to be separated so that a first product of the separation is enriched in component A, while component B is mixed with a t... | 06/07/2005 |
| 6858065 | High recovery PSA cycles and apparatus with reduced complexity A pressure swing adsorption process including the step of separating a gas mixture by absorbing a gas component in adsorbent beds provided within vessels, where the separating step has at least a two-stage pressure equalization and is performed with no more than fiv... | 02/22/2005 |
| 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 |
| 6755895 | Method and apparatus for pressure swing adsorption A pressure swing adsorption system including a pressure vessel having an opening and a valve manifold including a body having a first cavity fluidly connected to the opening. The body further includes a passage and a channel, such that the passage connects the chann... | 06/29/2004 |
| 6755892 | Carbon dioxide scrubber for fuel and gas emissions A system and method for controlling carbon dioxide (CO2) emissions emanating from a gas source includes a CO2 sorbent bed containing a regenerable sorbent. Exhaust gases flow through the CO2 sorbent bed before being released into the... | 06/29/2004 |
| 6699307 | High recovery PSA cycles and apparatus with reduced complexity A pressure swing adsorption process including the step of separating a gas mixture by absorbing a gas component in adsorbent beds provided within vessels, where the separating step has at least a two-stage pressure equalization and is performed with no mo... | 03/02/2004 |
| 6669760 | Separation of C2F6 from CF4 by adsorption on activated carbon This invention relates to an improvement in a process for removing C2 F6 as an impurity from a CF4 containing gas, preferably CF4 produced by the reaction of F2 with carbon. The improvement in the pro... | 12/30/2003 |
| 6461410 | Method and apparatus for separating, removing, and recovering gas components A raw gas containing a gas component A with low affinity with an adsorbent and a gas component C with high affinity with the adsorbent are sequentially supplied to at least three adsorption columns, while a desorption gas containing a gas component D whic... | 10/08/2002 |
| 6387158 | Method of removing moisture in gas supply system A method of removing moisture efficiently in the gas supply system by evacuation at normal temperature without using the baking method. The method involves flowing a gas to remove moisture in the gas supply system with the flow pressure of the gas to remo... | 05/14/2002 |
| 6332916 | Activated carbon filter and process for the separation of noxious gases Activated carbon filters containing transition metals, are prepared by (a) exchanging the transition metal with a cellulose ion exchange material to produce a cellulose material containing the transition metal; (b) charring of the product of (a); activati... | 12/25/2001 |
| 6322612 | PSA process for removal of bulk carbon dioxide from a wet high-temperature gas A pressure or vacuum swing adsorption process and apparatus are used for the separation and recovery of certain gaseous components, such as carbon dioxide from hot gas mixtures containing water vapor. The process comprises introducing the feed gas mixture... | 11/27/2001 |
| 6319303 | Process for purifying a gas and corresponding system In this process for purifying a gas by adsorption of a first impurity and of a second impurity, at least two main adsorbers (5A, 5B) and at least one auxiliary adsorber (6A, 6B) are used, the main adsorbers comprising a packing (8A, 8B, 9A, 9B) for adsorb... | 11/20/2001 |
