And Regeneration Of Solid Sorbent Patents (Class 95/121)
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Patent number: 10793448Abstract: Disclosed are methods for dehydrating a water containing source of formaldehyde in which water is separated from the water containing source of formaldehyde using a zeolite membrane. In certain aspects, the water containing source of formaldehyde includes a separation enhancer having a relative static permittivity ranging from 2.5 to 20, and the water containing source of formaldehyde may further include methanol. In certain aspects, (meth)acrylic acid alkyl ester may be produced using the dehydrated source of formaldehyde.Type: GrantFiled: September 5, 2018Date of Patent: October 6, 2020Assignee: Lucite International UK LimitedInventors: Yoshiyuki Himeno, Ken Ooyachi, Masahide Kondo
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Patent number: 10093559Abstract: Disclosed are methods for dehydrating a water containing source of formaldehyde in which water is separated from the water containing source of formaldehyde using a zeolite membrane. In certain aspects, the water containing source of formaldehyde includes a separation enhancer having a relative static permittivity ranging from 2.5 to 20, and the water containing source of formaldehyde may further include methanol. In certain aspects, (meth)acrylic acid alkyl ester may be produced using the dehydrated source of formaldehyde.Type: GrantFiled: February 18, 2013Date of Patent: October 9, 2018Assignee: LUCITE INTERNATIONAL UK LIMITEDInventors: Yoshiyuki Himeno, Ken Ooyachi, Masahide Kondo
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Patent number: 8986433Abstract: The present invention provides a method and process for effectively purging desiccant air dryer systems from moisture load, by a ‘deep cooling’ regeneration means with the use of a primary high heating and a secondary low heating blower purge air flows, a heater discharge temperature set point, and a bottom area bed temperature of a vessel containing desiccant. The system of an improved heat regenerating desiccant compressed air dryer having means to terminate heating operations as well as cooling and dry purge operations allowing for the newly regenerated tower vessel to come back on-line for a compressed air drying cycle without negative effects of dew point bumps and outlet heat spike. Such dryer system delivers a high confidence of dried compressed air while saving energy, unnecessary cycling of heater and contactors and time.Type: GrantFiled: February 11, 2013Date of Patent: March 24, 2015Inventor: John A. Carlin
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Patent number: 8871005Abstract: A method of regenerating a desiccant in a breather communicating with a vessel includes creating a temperature signal that is a temperature associated with at least one of the vessel and the breather for a plurality of cycles, each cycle having a predetermined duration, and regenerating the desiccant when the second derivative of the temperature signal reaches a peak value.Type: GrantFiled: December 31, 2012Date of Patent: October 28, 2014Assignee: Qualitrol Company, LLCInventor: Joshua J. Herz
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Patent number: 8858690Abstract: High volumetric-efficiency thermally integrated systems for capturing a target gas from a process gas stream include a monolithic body and a distribution system. The monolithic body includes a first plurality of channels and a second plurality of channels each having sorbent surfaces that reversibly adsorb the target gas. The channels are in thermal communication such that heat from an exothermic adsorption of target gas in one plurality of channels is used by an endothermic desorption of target gas from the other plurality of channels. Methods for separating a target gas from a process gas stream include switching the high volumetric-efficiency thermally integrated systems between a first state and a second state. In the first state, the first plurality of channels undergoes desorption while the second undergoes adsorption. In the second state, the second plurality of channels undergoes desorption while the first plurality undergoes adsorption.Type: GrantFiled: August 24, 2011Date of Patent: October 14, 2014Assignee: Corning IncorporatedInventors: Amit Halder, Steven Bolaji Ogunwumi
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Patent number: 8794237Abstract: An oxygen concentrator may rely on a pressure swing adsorption process to produce an oxygen enriched gas stream from canisters filled with granules capable of separation of oxygen from an air stream. The adsorption process uses a cyclical pressurization and venting of the canisters to generate an oxygen enriched gas stream. The oxygen concentrator system may include one or more flow restrictors to allow controlled release of oxygen enriched gas between the canisters.Type: GrantFiled: August 25, 2010Date of Patent: August 5, 2014Assignee: Inova Labs, Inc.Inventors: William R. Wilkinson, Allan Sten Westersten, H. David Shockley, Jr.
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Patent number: 8747530Abstract: A system for water extraction from air is provided. The system includes a housing having a plurality of openings allowing an air flow to enter into an inner space defined by the housing. The system also includes a sponge disposed within the inner space defined by the housing. The sponge includes a water absorbing/adsorbing material for absorbing/adsorbing water vapor from the air flow. The system further includes a presser disposed above the sponge and configured to compress the sponge to discharge water from the sponge.Type: GrantFiled: February 3, 2012Date of Patent: June 10, 2014Assignee: LTA CorporationInventor: John Goelet
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Patent number: 8702845Abstract: The invention pertains to a system for purification of a carbon dioxide rich flue gas generated in a boiler combusting a fuel in the presence of a gas containing oxygen, and being contaminated by NOx gases, wherein the system comprising one or more gas drier(s) comprising desiccants for removal of at least a portion of water content of the further compressed carbon dioxide rich flue gas; and a closed loop connected to the drier(s) for regeneration of desiccants of the drier(s) wherein the NOx gases are removed substantially separately from the water vapor. The invention pertains also to a method for removing the NOx gases substantially separately from the water vapor.Type: GrantFiled: September 6, 2013Date of Patent: April 22, 2014Assignee: ALSTOM Technology LtdInventor: Olaf Stallmann
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Patent number: 8685175Abstract: 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 operates at a first condition to dry the reactant and the second drier operates at a second condition during regeneration. The used regenerant remaining in the second drier after regeneration can (1) pass through a vent-to-flare assembly in a batch-wise manner; (2) pass through a downflow-depressure-to-low-pressure-device assembly in a batch-wise manner; (3) pass through a cross-over piping purge assembly to minimize upsets in the reaction and fractionation zones when the second drier is placed back in operation; or any combination of (1) (2) and/or (3) to minimize upsets in the reaction and fractionation zones when the second drier is placed back in operation.Type: GrantFiled: November 17, 2009Date of Patent: April 1, 2014Assignee: UOP LLCInventors: Bryan S. Garney, Jocelyn C. Daguio, Kurt A. Detrick, David J. Shecterle, John M. Krupczak, Andrew D. Mezera, Douglas A. Becci
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Patent number: 8628602Abstract: An air processing device for a utility vehicle includes a compressor and two air dryer cartridges. The air dryer cartridges are located in two parallel paths. A control unit controls a regeneration of one of said air dryer cartridges independent from a load phase of the other of said air dryer cartridges.Type: GrantFiled: July 14, 2011Date of Patent: January 14, 2014Assignee: Haldex Brake Products GmbHInventor: Siegfried Heer
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Patent number: 8580013Abstract: An air dryer cartridge is provided for a compressed air supply system, in particular a compressed air supply system of a commercial vehicle, with a drying agent box which is filled with a drying agent. The drying agent box can be coupled in an axial direction to a connecting flange of the compressed air supply system. A seal, which is designed as a non-return valve and, in the fitted state of the air dryer cartridge, acts in a sealing manner between the drying agent box and the connecting flange, is arranged on the drying agent box. A method for operating the air dryer cartridge on the compressed air supply system is also provided.Type: GrantFiled: September 10, 2012Date of Patent: November 12, 2013Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbHInventor: Eduard Hilberer
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Patent number: 8545706Abstract: One exemplary embodiment can be an apparatus for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon. The apparatus can include: a first drier and a second drier adapted to receive a fluid including at least one reactant; and a reaction zone communicating with the first drier to receive the fluid including at least one reactant and with the second drier to receive the regenerant. Generally, the first drier operates at a first condition to dry the fluid including at least one reactant and the second drier operates at a second condition during regeneration with a regenerant. The regenerant can pass through a fluid tapering device for regulating the flow of the regenerant to the reaction zone.Type: GrantFiled: November 5, 2012Date of Patent: October 1, 2013Assignee: UOP LLCInventors: David J. Shecterle, Bryan S. Garney, Jocelyn C. Daguio, James M. Shawley
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Patent number: 8545705Abstract: One exemplary embodiment can be an apparatus for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon. The apparatus can include:a vessel containing a fluid including at least one reactant; a fluid transfer device receiving the fluid including at least one reactant from the vessel; at least one drier receiving the fluid including at least one reactant from the fluid transfer device; and a reactor communicating with the at least one drier to receive the fluid including at least one reactant. In addition, the at least one drier may communicate with the vessel at least by sending the fluid including at least one reactant or the regenerant through a fluid tapering device for at least one of regulating the flow and reducing the pressure of the regenerant to the vessel.Type: GrantFiled: November 5, 2012Date of Patent: October 1, 2013Assignee: UOP LLCInventors: David J. Shecterle, Jocelyn C. Daguio, Bryan S. Garney, James M. Shawley
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Patent number: 8409331Abstract: The invention relates to auxiliary systems ensuring functioning of alkaline fuel cell (AFC), in particular to a method and device for sorptive purification of air used in an AFC of carbon dioxide. In accordance with the invention, in the method for purifying air for a fuel cell, the starting air is passed through an adsorber with an adsorbent of carbon dioxide, then the adsorbent is regenerated. After utilization the adsorbent comprising hydrated oxides of transition metals is regenerated at a temperature of 60-120° C. by the air spent in the fuel cell.Type: GrantFiled: November 4, 2003Date of Patent: April 2, 2013Assignee: Obschestvo S Ogranichennoi Otvetstvennostiyu “Intensis”Inventors: Ziya Ramizovich Karichev, Dmitry Alexandrovich Blatov, Stanislav Iliich Simanenkov, Valentina Nikolaevna Shubina
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Publication number: 20120312164Abstract: This invention provides a metal complex having a gas adsorption capability, a gas storing capability, and a gas separation capability. The present invention attained the above object by a metal complex comprising: a dicarboxylic acid compound (I) represented by the following General Formula (I), wherein R1, R2, R3, and R4 are as defined in the specification; at least one metal ion selected from ions of a metal belonging to Group 2 and Groups 7 to 12 of the periodic table; and an organic ligand capable of bidentate binding to the metal ion, the organic ligand belonging to the D?h point group, having a longitudinal length of not less than 8.0 ? and less than 16.0 ?, and having 2 to 7 heteroatoms.Type: ApplicationFiled: February 24, 2011Publication date: December 13, 2012Applicant: Kuraray Co., LTD.Inventors: Yasutaka Inubushi, Chikako Ikeda, Koichi Kanehira
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Patent number: 8313562Abstract: One exemplary embodiment can be an apparatus for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon. The apparatus can include: a first drier and a second drier adapted to receive a fluid including at least one reactant; and a reaction zone communicating with the first drier to receive the fluid including at least one reactant and with the second drier to receive the regenerant. Generally, the first drier operates at a first condition to dry the fluid including at least one reactant and the second drier operates at a second condition during regeneration with a regenerant. The regenerant can pass through a fluid tapering device for regulating the flow of the regenerant to the reaction zone.Type: GrantFiled: September 1, 2011Date of Patent: November 20, 2012Assignee: UOP LLCInventors: David J. Shecterle, Bryan S. Garney, Jocelyn C. Daguio, James M. Shawley
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Patent number: 8313563Abstract: One exemplary embodiment can be an apparatus for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon. The apparatus can include: a vessel containing a fluid including at least one reactant; a fluid transfer device receiving the fluid including at least one reactant from the vessel; at least one drier receiving the fluid including at least one reactant from the fluid transfer device; and a reactor communicating with the at least one drier to receive the fluid including at least one reactant. In addition, the at least one drier may communicate with the vessel at least by sending the fluid including at least one reactant or the regenerant through a fluid tapering device for at least one of regulating the flow and reducing the pressure of the regenerant to the vessel.Type: GrantFiled: September 9, 2011Date of Patent: November 20, 2012Assignee: UOP LLCInventors: David J. Shecterle, Bryan S. Garney, James M. Shawley, Jocelyn Daguio
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Patent number: 8273153Abstract: The method allows liquefaction of a dry natural gas comprising water and heavy hydrocarbons containing more than five carbon atoms. The following stages are carried out: a) passing the dry natural gas through a water-adsorbent solid so as to obtain a water-depleted natural gas and a water-laden adsorbent solid, b) passing the water-depleted natural gas through a solid adsorbing heavy hydrocarbons comprising at least five carbon atoms so as to obtain a heavy hydrocarbon-depleted natural gas and a heavy hydrocarbon-laden adsorbent solid, c) liquefying the heavy hydrocarbon-depleted natural gas at a pressure above 40 bar abs so as to obtain a liquid natural gas under pressure, d) expanding the liquid natural gas under pressure obtained in stage c) to atmospheric pressure so as to obtain a liquid natural gas and a gas fraction.Type: GrantFiled: September 23, 2008Date of Patent: September 25, 2012Assignee: IFP Energies nouvellesInventors: Michel Thomas, Beatrice Fischer, Gilles Ferschneider
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Patent number: 8257470Abstract: Disclosed is a harmful material treatment system for recovering the energy and removing the harmful material in the process of treating the gas containing the harmful material generated in the multiplex utilization facility, in the display mall, in diverse manufacturing processes and in the vehicle painting process, more particularly, to a harmful material treatment system which can recover the energy contained in the air conditioning facility or in the exhaust gas of the process with an efficiency of more than 90%, for exhausting the inside air to the outside so as to treat the contaminating material such as odor and volatile organic chemicals, and to remove the harmful material with a removal efficiency of more than 90% by adsorbing and concentrating the harmful material with a rotary-type adsorbent.Type: GrantFiled: March 24, 2006Date of Patent: September 4, 2012Assignee: Enbion Inc.Inventors: Hyun Jae Lee, Myeong Soo Yoon, Min Su Shin, Won Moon Jeong, Jeong Ki Min
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Patent number: 8246835Abstract: One exemplary embodiment can be an apparatus for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon. The apparatus can include: a first drier and a second drier adapted to receive a fluid including at least one reactant; and a reaction zone communicating with the first drier to receive the fluid including at least one reactant and with the second drier to receive the regenerant. Generally, the first drier operates at a first condition to dry the fluid including at least one reactant and the second drier operates at a second condition during regeneration with a regenerant. The regenerant is displaced from the drier using a down-flow regenerant displacement assembly.Type: GrantFiled: September 1, 2011Date of Patent: August 21, 2012Assignee: UOP LLCInventors: Bryan S. Garney, Jocelyn C. Daguio, Kurt A. Detrick, Douglas A. Becci, David J. Shecterle, John M. Krupczak, Andrew D. Mezera
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Patent number: 8163068Abstract: One exemplary embodiment can be an apparatus for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon. The apparatus can include: a first drier and a second drier adapted to receive a fluid including at least one reactant; and a reaction zone communicating with the first drier to receive the fluid including at least one reactant and with the second drier to receive the regenerant. Generally, the first drier operates at a first condition to dry the fluid including at least one reactant and the second drier operates at a second condition during regeneration with a regenerant. The regenerant can pass through a fluid tapering device for regulating the flow of the regenerant to the reaction zone.Type: GrantFiled: June 16, 2009Date of Patent: April 24, 2012Assignee: UOP LLCInventors: David J. Shecterle, Bryan S. Garney, Jocelyn C. Daguio, James M. Shawley
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Patent number: 8163067Abstract: One exemplary embodiment can be an apparatus for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon. The apparatus can include: a first drier and a second drier adapted to receive a fluid including at least one reactant; and a reaction zone communicating with the first drier to receive the fluid including at least one reactant and with the second drier to receive the regenerant. Generally, the first drier operates at a first condition to dry the fluid including at least one reactant and the second drier operates at a second condition during regeneration with a regenerant. The regenerant is displaced from the drier using a down-flow regenerant displacement assembly.Type: GrantFiled: June 16, 2009Date of Patent: April 24, 2012Assignee: UOP LLCInventors: Bryan S. Garney, Jocelyn C. Daguio, Kurt A. Detrick, Douglas A. Becci, David J. Shecterle, John M. Krupczak, Andrew D. Mezera
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Patent number: 8157893Abstract: One exemplary embodiment can be an apparatus for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon. The apparatus can include: a vessel containing a fluid including at least one reactant; a fluid transfer device receiving the fluid including at least one reactant from the vessel; at least one drier receiving the fluid including at least one reactant from the fluid transfer device; and a reactor communicating with the at least one drier to receive the fluid including at least one reactant. In addition, the at least one drier may communicate with the vessel at least by sending the fluid including at least one reactant or the regenerant through a fluid tapering device for at least one of regulating the flow and reducing the pressure of the regenerant to the vessel.Type: GrantFiled: June 16, 2009Date of Patent: April 17, 2012Assignee: UOP LLCInventors: David J. Shecterle, Bryan S. Garney, James M. Shawley, Jocelyn C. Daguio
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Patent number: 8062613Abstract: 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 operates at a first condition to dry the reactant and the second drier operates at a second condition during regeneration. The used regenerant remaining in the second drier after regeneration can (1) pass through a vent-to-flare assembly in a batch-wise manner; (2) pass through a downflow-depressure-to-low-pressure-device assembly in a batch-wise manner; (3) pass through a cross-over piping purge assembly to minimize upsets in the reaction and fractionation zones when the second drier is placed back in operation; or any combination of (1) (2) and/or (3) to minimize upsets in the reaction and fractionation zones when the second drier is placed back in operation.Type: GrantFiled: November 17, 2009Date of Patent: November 22, 2011Assignee: UOP LLCInventors: Bryan S. Garney, Jocelyn C. Daguio, Kurt A. Detrick, David J. Shecterle, John M. Krupczak, Andrew D. Mezera, Douglas A. Becci
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Publication number: 20110271833Abstract: An adsorbent vessel and process for using the adsorbent vessel subject to thermal swing expansion/contraction is disclosed where the adsorbent vessel comprises a support screen affixed to the adsorption vessel subject to thermal swing expansion/contraction and where a first section of the support screen extends along a portion of the length of the adsorption vessel subject to thermal swing expansion/contraction in the axial direction and comprises apertures permitting gas permeation and where the first section of the support screen has a cross-section in the axial direction that is arcuate.Type: ApplicationFiled: May 5, 2010Publication date: November 10, 2011Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Stephen Clyde Tentarelli, Stephen John Gibbon
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Patent number: 8034164Abstract: A pressure swing adsorption process including the step of separating a gas mixture by absorbing at least one gas component in an adsorbent mass provided within each vessel of a plurality of vessels. The separating step has a single pressure equalization cycle. The separating step is preferably performed with only four valves per vessel of the plurality of vessels. Additionally, a pressure swing adsorption system of the invention includes a plurality of vessels each containing therein an adsorbent mass configured to separate a gas mixture by absorbing at least one gas component in said adsorbent mass, where the system is configured to separate the gas mixture using a single pressure equalization cycle and includes only four valves per vessel of the plurality of vessels.Type: GrantFiled: September 26, 2008Date of Patent: October 11, 2011Assignee: Lummus Technology Inc.Inventors: Franklin D. Lomax, Jr., John S. Lettow
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Patent number: 8016918Abstract: Pressure swing adsorption process for producing oxygen comprising (a) providing at least one adsorber vessel having a first layer of adsorbent adjacent the feed end of the vessel and a second layer of adsorbent adjacent the first layer, wherein the surface area to volume ratio of the first layer is in the range of about 0.75 to about 1.8 cm?1; (b) introducing a pressurized feed gas comprising at least oxygen, nitrogen, and water into the feed end, adsorbing at least a portion of the water in the adsorbent in the first layer, and adsorbing at least a portion of the nitrogen in the adsorbent in the second layer, wherein the superficial contact time of the pressurized feed gas in the first layer is between about 0.08 and about 0.50 sec; and (c) withdrawing a product gas enriched in oxygen from the product end of the adsorber vessel.Type: GrantFiled: October 4, 2006Date of Patent: September 13, 2011Assignee: Air Products and Chemicals, Inc.Inventors: Matthew James LaBuda, Timothy Christopher Golden, Roger Dean Whitley, Craig E. Steigerwalt
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Patent number: 7927406Abstract: The water droplet generating system includes a vessel, an opening/closing valve, a moisture absorbent member, and a condenser portion. The vessel has an opening portion. The opening/closing valve opens and closes the opening portion. The water absorbent member absorbs and releases water vapor depending on a change of humidity. The condenser portion is communicated with the inside of the vessel and cools water vapor released from the moisture absorbent member to be at a dew point of water vapor or less. When the opening portion is opened, the moisture absorbent member absorbs water vapor in atmosphere. When the opening portion is closed, the moisture absorbent member releases water vapor, and the condenser portion condenses water vapor, which is released from the moisture absorbent member, to generate a water droplet.Type: GrantFiled: May 19, 2008Date of Patent: April 19, 2011Assignee: Denso CorporationInventor: Yukihisa Takeuchi
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Patent number: 7922790Abstract: Compressor device having a compressor (2) with an inlet (3) and an outlet (4); a compressed air line (5) which connects the outlet (4) of the compressor (2) to a user network (6); a drier (7) which is incorporated in the compressed air line (5) and which includes at least two air receivers (13-16) which are each provided with an inlet (14) and an outlet (15) and which are filled with desiccant or drying agent, which air receivers (13-16) work alternately, such that while one air receiver (13) is drying the compressed gas, the other air receiver (16) is regenerated; and a blow-off device (28) for blowing off at least a part of the gas compressed by the compressor when the compressor (2) works in no-load or in partial load, characterized in that mechanisms are provided which make it possible to guide the part of the compressed gas which is blown off via the blow-off device (28) through the regenerating air receiver (13).Type: GrantFiled: July 20, 2005Date of Patent: April 12, 2011Assignee: Atlas Copco Airpower Naamloze VennootschapInventor: Danny Etienne Andrée Vertriest
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Patent number: 7871458Abstract: There is provided a heating system for a building comprising; i) a heater; ii) a media flow passage through which a medium heated by the heater passes in order to distribute heat through the building; and iii) a heat recovery apparatus for recovering latent heat of adsorption from a humid gas. The heat recovery apparatus comprises a) a gas flow passage connected at one end to a source of humid gas; b) a desiccant material provided within the gas flow passage such that the humid gas contacts the desiccant material and water vapor is adsorbed releasing latent heat of adsorption; wherein the media flow passage and gas flow passage are in heat exchanging relationship, such that when the desiccant material adsorbs water vapor from the exhaust gas the latent of the adsorption is at least partially transmitted to the medium.Type: GrantFiled: December 19, 2007Date of Patent: January 18, 2011Assignee: Xsorb Eco Technology B.V.Inventor: Ari Antero Minkkinen
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Patent number: 7854790Abstract: A method of processing a volatile organic compound is provided, wherein a volatile organic compound contained in gas to be treated is adsorbed in an adsorbent; the thus-adsorbed volatile organic compound is desorbed with the aid of steam and mixed in the steam; and the steam containing the volatile organic compound is combusted. This method further includes: separating a vessel for the adsorption and desorption into an inner side room and an outer side room by means of a separation member part of which is formed of the adsorbent; thermally retaining the vessel for the adsorption and desorption; at the time of adsorption, supplying the gas to be treated to the inner side room and therefrom to the outer side room; and at the time of desorption, supplying the steam to the outer side room and therefrom to the inner side room.Type: GrantFiled: June 29, 2007Date of Patent: December 21, 2010Assignee: Ishikawajima-Harima Heavy Industries Co., Ltd.Inventors: Shigekazu Uji, Masahito Yamaguchi
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Patent number: 7780764Abstract: The present invention relates generally to processes and systems for recovering helium from low helium-containing feed gases (i.e., containing less than about 10 volume % helium and more typically, less than about 5% helium by volume). The present invention more particularly relates to processes and systems for recovering helium from low helium-containing feed gases using temperature swing adsorption (TSA) systems and multiple (e.g. two) stage vacuum pressure swing adsorption (VPSA) systems. In preferred embodiments of the invention, the first stage VPSA system is configured to provide regeneration gas for the TSA system, and/or the VPSA second stage tail gas is recycled to the first stage VPSA system.Type: GrantFiled: June 27, 2008Date of Patent: August 24, 2010Assignee: Praxair Technology, Inc.Inventor: Mohamed Safdar Allie Baksh
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Patent number: 7608132Abstract: A method and apparatus provide multiple consecutive purges of an air dryer in a vehicle compressed air system. A dryer throughput sensor has an output indicative of the amount of compressed air that is passed through the dryer. In response, a CPU determines the number of purges needed to purge the dryer; and a valve is operated by the CPU to initiate multiple purges of the dryer when the compressor is unloaded.Type: GrantFiled: February 24, 2006Date of Patent: October 27, 2009Assignee: Bendix Commercial Vehicle Systems LLCInventors: William P. Fornof, Paul Reisinger
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Patent number: 7604004Abstract: 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.Type: GrantFiled: April 5, 2006Date of Patent: October 20, 2009Assignee: Vbox IncorporatedInventors: Theodore W. Jagger, Nicholas P. Van Brunt, John A. Kivisto, Perry B. Lonnes
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Publication number: 20090229461Abstract: A method and an apparatus for desorption and a dehumidifier are provided in the present invention, in which an electrical potential is applied to electrodes disposed on both ends of an absorbing material so as to desorb the substances absorbed within the absorbing material whereby the absorbing material is capable of being maintained for cycling the absorbing operation. By means of the method and the apparatus of the present invention, the desorbing efficiency can be enhanced and the energy consumption can be reduced during desorption.Type: ApplicationFiled: March 16, 2009Publication date: September 17, 2009Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: MING-SHAN JENG, MING-SHIANN SHIH, JAU-CHYN HUANG, YU-LI LIN, YA-WEN CHOU, TING-WEI HUANG, YU-MING CHANG
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Patent number: 7563310Abstract: A dehumidifier for an electrical-equipment air intake has an outer housing wall and a floor of a material with a high specific thermal conductivity downwardly closing the outer housing wall, having a downwardly tapering funnel-shaped inner surface formed with a central downwardly open port, and having a rounded edge where the surface meets the port. An inner air-permeable housing inside the outer housing wall holds a moisture-absorbing mass so that air drawn in through the port can pass through the mass and then into a space between the inner and outer housings. A moisture sensor is provided between the housings and a heater in the mass. A controller connected between the heater and the sensor energizes the heater and cooks moisture out of the mass such that the moisture condenses on the floor and runs over the edge out through the port.Type: GrantFiled: April 1, 2004Date of Patent: July 21, 2009Assignee: Maschinenfabrik Reinhausen GmbHInventors: Manfred Eichert, Kurt Kugler, Karsten Viereck, Rainer Brill
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Patent number: 7550031Abstract: An energy efficient oxygen concentrator for filling high pressure portable cylinders with medical oxygen for use by ambulatory patients. Two compressors provide two pressurized air sources, one for operating an oxygen concentrator to provide a stream of oxygen enriched gas, and the other for driving a pressure intensifier for filling portable oxygen cylinders. Pressurized exhaust from the pressure intensifier is returned to the inlet side of at least one of the compressors for reducing the energy required to drive the compressor. Preferably, each compressor has a single reciprocating piston, a single motor drives both pistons and the pressurized exhaust from pressure intensifier is provided to the inlets for both compressors.Type: GrantFiled: October 18, 2006Date of Patent: June 23, 2009Assignee: Sunrise Medical HHG Inc.Inventors: Donald W. Hunter, Frank R. Frola, Karl Bowser
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Patent number: 7264649Abstract: The invention provides a humidity control system (HCS) to control indoor humidity within a specified range so as to reduce indoor house-dust mite allergen levels. The invention also provides a hydrogel absorber/desorber for reversibly absorbing water vapor from air releasing water vapor to air. The invention employs a reversible hydrogel desiccant as the active element for absorption and desorption of water, thus rendering the HCS more effective and energy-efficient than traditional humidification/dehumidification systems. The HCS of the invention treats indoor air by drawing fresh air in from outside and adjusting the humidity of the air-stream. In certain embodiments, fresh air is drawn in from the outside and mixed with recirculated air. The HCS uses a controller to introduce fresh air into the interior space and to control air circulation within it. Relative humidity is monitored remotely throughout the interior space using wired or wireless sensors.Type: GrantFiled: July 23, 2004Date of Patent: September 4, 2007Assignee: Advanced Design Consulting USA, Inc.Inventors: Eric Arthur Johnson, Joseph Duane Kulesza
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Patent number: 7166149Abstract: Using a high pressure rotary adsorbent wheel, a high value compressed gas feed can be purified by concentrating the impurity such as water, condensing it out, before final purification. Instead of exhausting gas from the system, the effluent can be put back into the feed at a point prior to condensation of the high value gas feed, and therefore the entire feed is purified without any high value gas feed going into a waste stream.Type: GrantFiled: January 12, 2004Date of Patent: January 23, 2007Assignee: UOP LLCInventors: Stephen R. Dunne, Peter K. Coughlin, Rustam H. Sethna
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Patent number: 7121276Abstract: 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.Type: GrantFiled: February 9, 2005Date of Patent: October 17, 2006Assignee: Vbox, IncorporatedInventors: Theodore W. Jagger, Nicholas P. Van Brunt, John A. Kivisto, Perry B. Lonnes
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Patent number: 7103991Abstract: A method of initiating a regeneration event of an air braking system of a vehicle includes the steps of calculating the forward air volume in successive time intervals, tallying the total forward air volume and initiating a regeneration event at a saturation threshold of the dessicant material which may be varied in real time. The method also comprises calculating a reverse air volume, and ceasing a regeneration event at a dryness threshold of the dessicant material.Type: GrantFiled: May 28, 2002Date of Patent: September 12, 2006Inventor: Daniel Moulding
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Patent number: 6953498Abstract: An adsorption gas dryer has a first drying tower and a second drying tower each having a first port and a second port through which gas can pass into or out of the tower, a first manifold and a second manifold connected respectively to the first and the second ports of both towers, the manifolds each including integral gas passages, each port of the towers being in communication with a gas passage, and the manifolds each including at least one integral valve seat upon which a valve actuator is mounted to constitute a valve for controlling flow of gas through the gas passages, wherein the second manifold has two exhaust valves for controlling purge gas.Type: GrantFiled: July 3, 2003Date of Patent: October 11, 2005Assignee: Walker Filtration LimitedInventors: Brian Walker, Richard Lawrence Taggart
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Patent number: 6869464Abstract: A device for absorbing atmospheric moisture includes a support member with a net extending therefrom. The net includes a super absorbent polymer that has the property of being able to absorb a multiple of the polymer mass in atmospheric water and to thereafter release the water in response to an external stimulus. The device is in this way reusable. The device has particular application in the clearing of fog, manure odor clearance, and collection of potable water in remote locations. A process for extracting atmospheric moisture is also detailed that includes the step of extending a super absorbent polymer net into contact with an atmosphere. Thereafter, with that being in contact with the atmosphere for a sufficient amount of time moisture is absorbed from the atmosphere. The application of a stimulus to the super absorbent polymer containing atmospheric moisture causes the release of liquid water therefrom. The super absorbent polymer is then suitable for reuse to again absorb atmospheric water.Type: GrantFiled: February 6, 2003Date of Patent: March 22, 2005Inventor: John Klemic
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Patent number: 6858066Abstract: An air dryer and reservoir assembly for providing compressed air from an air compressor (20) on a heavy motor vehicle which includes an air dryer (14) connected to receive compressed air from the air compressor (20) and a secondary reservoir (12), including an integral purge volume (34), for storing compressed air which passes through the air dryer (14), with the air dryer (14) and the secondary reservoir (12) being securely attached to a housing (16) to form an air dryer reservoir module (10). A primary, reservoir (18) for storing compressed air from the air dryer (14) is located remote from the air dryer reservoir module (10). A pressure equalizing mechanism (57) is disposed between the primary reservoir (18) and the secondary reservoir (12) for keeping pressure in the two reservoirs (12,18) equal.Type: GrantFiled: June 26, 2003Date of Patent: February 22, 2005Inventors: Leonard A. Quinn, Fred W. Hoffman, David J. Goodell
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Patent number: 6743277Abstract: A cargo or bulk product off-load system includes a compressor (10) that pressurizes air. The air is dried by a dryer (12, 14) and routed to a supply tank (16). From the supply tank, the air is either used to pressurize service reservoirs (24, 26) or to assist the off-load system. Air stored in the service reservoirs (24, 26) is used to pressurize purge volumes associated with the dryers (12, 14). The compressor (10) operates at a lower pressure when supplying air to assist the off-load system than when pressurizing the service reservoirs (24, 26). Controllers (30, 40) coordinate switching of airflow, and alternating purging and drying of the dryers.Type: GrantFiled: May 16, 2002Date of Patent: June 1, 2004Assignee: Bendix Commercial Vehicle Systems LLCInventors: David J. Goodell, Charles e. Eberling
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Patent number: 6736879Abstract: An adsorption method is disclosed for removal of acid gas from a sulfur compound stream. The method relates to a novel process to remove acid gas from a sulfur compound stream by adsorption on an adsorption media adsorbent followed by regeneration of the adsorption media after the adsorption capacity has been reached. The adsorption media comprises an activated alumina, which has been previously treated with one or more alkali metal compounds, one or more alkaline earth metal compounds, or a mixture thereof; and then regenerating the adsorbent after the adsorption capacity has been reached.Type: GrantFiled: May 1, 2002Date of Patent: May 18, 2004Assignee: Chevron Phillips Chemical Company LPInventors: Dan M. Hasenberg, Stan A. Zisman, Mitchell D. Refvik
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Publication number: 20040045436Abstract: An air dryer and reservoir assembly for providing compressed air from an air compressor (20) on a heavy motor vehicle which includes an air dryer (14) connected to receive compressed air from the air compressor (20) and a secondary reservoir (12), including an integral purge volume (34), for storing compressed air which passes through the air dryer (14), with the air dryer (14) and the secondary reservoir (12) being securely attached to a housing (16) to form an air dryer reservoir module (10). A primary reservoir (18) for storing compressed air from the air dryer (14) is located remote from the air dryer reservoir module (10). A pressure equalizing mechanism (57) is disposed between the primary reservoir (18) and the secondary reservoir (12) for keeping pressure in the two reservoirs (12,18) equal.Type: ApplicationFiled: June 26, 2003Publication date: March 11, 2004Applicant: Bendix Commercial Vehicle Systems LLCInventors: Leonard A. Quinn, Fred W. Hoffman, David J. Goodell
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Publication number: 20040016342Abstract: An air dryer assembly for removing moisture and oil from a compressed air system includes a desiccant material received in a shell for adsorbing moisture as compressed air passes therethrough. A coalescing element is disposed between an inlet and outlet for removing oil aerosols from the compressed air. A check valve is disposed in parallel with the coalescing element and forces the compressed air to pass through the coalescing element as air flows from the inlet to the outlet. During a purge or reverse flow, compressed air bypasses the coalescing element and removes oil collected in the cartridge through the inlet.Type: ApplicationFiled: July 26, 2002Publication date: January 29, 2004Inventors: William P. Fornof, James P. Koenig, Leonard Quinn
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Publication number: 20030213361Abstract: A cargo or bulk product off-load system includes a compressor (10) that pressurizes air. The air is dried by a dryer (12, 14) and routed to a supply tank (16). From the supply tank, the air is either used to pressurize service reservoirs (24, 26) or to assist the off-load system. Air stored in the service reservoirs (24, 26) is used to pressurize purge volumes associated with the dryers (12, 14). The compressor (10) operates at a lower pressure when supplying air to assist the off-load system than when pressurizing the service reservoirs (24, 26). Controllers (30, 40) coordinate switching of airflow, and alternating purging and drying of the dryers.Type: ApplicationFiled: May 16, 2002Publication date: November 20, 2003Inventors: David J. Goodell, Charles E. Eberling
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Patent number: RE39467Abstract: An air dryer and reservoir assembly for providing compressed air from an air compressor (20) on a heavy motor vehicle which includes an air dryer (14) connected to receive compressed air from the air compressor (20) and a secondary reservoir (12), including an integral purge volume (34), for storing compressed air which passes through the air dryer (14), with the air dryer (14) and the secondary reservoir (12) being securely attached to a housing (16) to form an air dryer reservoir module (10). A primary reservoir (18) for storing compressed air from the air dryer (14) is located remote from the air dryer reservoir module (10). A pressure equalizing mechanism (57) is disposed between the primary reservoir (18) and the secondary reservoir (12) for keeping pressure in the two reservoirs (12,18) equal.Type: GrantFiled: November 24, 2003Date of Patent: January 16, 2007Assignee: Bendix Commercial Vehicle Systems LLCInventors: Leonard A. Quinn, Fred W. Hoffman, David J. Goodell