[특허]PSA process with dynamic purge control

PSA process with dynamic purge control 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01D-053/047
출원번호	US-0404661 (1995-03-15)
발명자 / 주소	Tan Ziming (Basking Ridge NJ)
출원인 / 주소	The BOC Group, Inc. (New Providence NJ 02)
인용정보	피인용 횟수 : 50 인용 특허 : 0

초록 ▼

Oxygen of uniform purity is produced in a two-bed air-fed oxygen pressure swing adsorption process in which the beds are operated out of phase. The steps of the adsorption cycle include a pressurization/production step and a bed regeneration step, with the bed undergoing regeneration being purged with a low pressure stream of the oxygen-enriched gas produced as the nonadsorbed product of the process. The oxygen concentration in the purged gas effluent is continuously periodically monitored, and the maximum oxygen concentration in the effluent during selected purge steps is compared with the maximum oxygen concentration in the effluent during a previous purge step, and the difference is used to adjust the timing and duration of a purge step following the selected purge step in a manner that reduces the difference between the oxygen concentration in the sequential purge steps.

대표청구항 ▼

A cyclic PSA process for recovering first component-enriched gas from a gas mixture containing first and second components in a system comprised of a battery of two or more beds of adsorbent which more strongly adsorb the second component than the first component, said beds being arranged in parallel and operated out of phase such that at least one bed is in adsorption service while at least one other bed is being regenerated, wherein a specific event occurs during each period of bed regeneration, comprising the following steps: (a) flowing said gas mixture into said at least one bed, thereby pressurizing said at least one bed to a selected adsorption pressure and producing first component-enriched gas as a nonadsorbed product, while regenerating said at least one other bed by desorbing second component-enriched gas therefrom at a selected vent pressure, said at least one other bed being purged with first component-enriched gas during at least part of the period of regeneration of said at least one other bed; (b) repeating step (a) with the roles of said at least one bed and said at least one other bed being changed until all beds of said system have undergone step (a); (c) periodically determining the absolute difference between the concentration of first component in the second component-enriched gas being desorbed from said at least one other bed upon the occurrence of said specific event during a period of regeneration of said at least one other bed and the concentration of first component in the second component-enriched gas being desorbed from said at least one bed upon the occurrence of said specific event during a period of regeneration of said at least one bed, and (d) periodically adjusting the duration of purge in one or more of said at least one bed and said at least one other bed in a manner that will reduce said absolute difference.

이 특허를 인용한 특허 (50)

Taylor, Brenton; Hansen, Peter, Adsorbent bed pressure balancing for a gas concentrator.
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Moeller,Stefan; Bader,Wolfgang, Adsorber station and the use thereof.
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Belanger, Paul W.; Baksh, Mohamed Safdar Allie; Chandra, Preeti; Rosinski, Andrew C., Adsorption control method and controller.
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Hager,Charles B., Air conserving slide valve.
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Aylsworth Alonzo C. ; Adriance Kyle ; Miller Gregory R., Apparatus and method for controlling output of an oxygen concentrator.
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Michaels Gregory A. ; Birangi Homayoun ; Polaseck David D., Closed-loop feedback control for oxygen concentrator.
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Baksh,Mohamed Safdar Allie; Jaynes,Scot Eric; Neu,Bernard Thomas; Smolarek,James; Emley,Mark Thomas, Control system for helium recovery.
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Wright, Andrew David; Kalbassi, Mohammad Ali; Golden, Timothy Christopher; Raiswell, Christopher James, Cyclical swing adsorption processes.
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Zenou, Bernard; Zenou, Laurent, Device for producing purified oxygen.
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Hill Charles C. ; Hill Theodore B., Fluid fractionator.
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Michaels Gregory A. ; Birangi Homayoun, Gas concentration sensor and control for oxygen concentrator utilizing gas concentration sensor.
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Loutfy Raouf O. ; Lu Xiao-Chun ; Li Weijiong ; Mikhael Michael G., Gas storage using fullerene based adsorbents.
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Baksh, Mohamed S. A.; Simo, Marian, Large scale pressure swing adsorption systems having process cycles operating in normal and turndown modes.
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Neu Bernard Thomas ; Smolarek James ; Rogan Michael Kenneth, Low pressure ratio VPSA plant tuning and balancing system.
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Ko, Jeongsik; Kwon, Hyukjae; Im, Dongmin, Metal-air battery having air purification module and method of operating the metal-air battery.
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Conrad Wayne Ernest,CAX ; Conrad Helmut Gerhard,CAX ; Szylowiec Ted,CAX, Method and apparatus for concentrating a gas using a single stage adsorption chamber.
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Conrad Wayne Ernest,CAX ; Conrad Helmut Gerhard,CAX ; Szylowiec Ted,CAX, Method and apparatus for concentrating a gas using a single stage adsorption zone.
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Conrad Wayne Ernest,CAX ; Conrad Helmut Gerhard,CAX ; Szylowiec Ted,CAX, Method and apparatus for concentrating a gas using a single stage adsorption zone.
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Makihira, Naohisa; Nakamura, Sadaki; Inoue, Goichi; Koike, Kunihiko, Method and apparatus for concentrating ozone gas.
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Monereau,Christian, Method for controlling a unit for the treatment by pressure swing adsorption of at least one feed gas.
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Rittner,Wolfgang; Meckes,R��diger; Pfennig,J��rgen, Method for operating an air fractionization installation for obtaining oxygen on board an aircraft.
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De-Souza, Guillaume; Dolle, Pierre-Olivier; Engler, Yves, Method of controlling a plant for processing a gas by adsorption and corresponding processing plant.
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Elseviers, Wim Frans; Laux, Stephan, Methods for controlling impurity buildup on adsorbent for pressure swing adsorption processes.
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John Lee Warren CA, Miniaturized wearable oxygen concentrator.
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Warren, John Lee, Miniaturized wearable oxygen concentrator.
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Robert John Phillips GB, Molecular sieve type gas separation apparatus.
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Phillips Robert John,GBX, Molecular sieve type gas separation apparatus and method.
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Fujimoto, Naotoshi, Oxygen concentrating apparatus.
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Kobayashi, Sumihiro; Kiriake, Hisashi, Oxygen concentration device.
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Cao, Tuan Q.; Byrd, Gary; Berkenbosch, Lyle; Schledewitz, Craig, Oxygen concentrator system.
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Cao Tuan Quoc ; Hart Russell Frank ; Molis William David ; Frantz Richard Kent ; Hager Charles Bradley ; Crome Victor Paul, Oxygen concentrator with beds' duty cycle control and self-test.
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Ando, Makoto; Kiriake, Hisashi, Oxygen enrichment device.
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Neill Allastair,CAX ; Leavitt Frederick Wells ; Figueiredo Antonio Felippe Zaccur,BRX, Oxygen recovery pressure swing adsorption process.
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Koerber, Achim Gerhard Rolf; Hilbig, Rainer; Van Der Sluis, Paul, Oxygen separator with rapid diagnostic.
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Rouge Dominique,FRX ; Teuscher Nathalie,FRX, PSA or VSA unit having jointly-controlled production output and production pressure.
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Monereau Christian,FRX, Process for treatment of a gaseous mixture by pressure swing adsorption, with variable production flow rate.
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Monereau Christian,FRX ; Rouge Dominique,FRX ; Derive Nathalie,FRX ; Montfort Christophe,FRX, Regulation of a PSA process.
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Baksh, Mohamed S. A.; Simo, Marian, Six bed pressure swing adsorption process operating in normal and turndown modes.
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Baksh, Mohamed S. A.; Simo, Marian, Six bed pressure swing adsorption process operating in normal and turndown modes.
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Baksh, Mohamed S. A.; Simo, Marian, Ten bed pressure swing adsorption process operating in normal and turndown modes.
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Aylsworth Alonzo C. ; Graham Charles ; Miller Gregory R., Therapeutic gas flow meter and monitor.
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Draper, Sam David; Rabiei, Shahryar, Use of oxygen concentrators for separating N2 from blast furnace gas.
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Lee, Sang Kook; Bukowski, Justin David, Vacuum swing adsorption process with controlled waste gas withdrawal.
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Hart, Russell F.; Hager, Charles B., Variable inlet air restriction for composition control of product gas.
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