[특허]Vacuum swing adsorption for air fractionation

[미국특허] Vacuum swing adsorption for air fractionation 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01D-051/00 B01D-053/00
출원번호	US-0016460 (1979-02-28)
발명자 / 주소	Sircar Shivaji (Allentown PA) White Thomas R. (Allentown PA)
출원인 / 주소	Air Products and Chemicals, Inc. (Allentown PA 02)
인용정보	피인용 횟수 : 44 인용 특허 : 1

초록 ▼

The water content of high purity nitrogen obtained by vacuum swing adsorptive fractionation of ambient air, is removed in a companion thermal swing drying system operated in association with the air fractionation system but at independent cycle time period, wherein water-laden nitrogen from the air fractionation system is passed through a desiccant bed of solid water-retaining adsorbent in said drying system while withdrawing dry nitrogen of high purity therefrom, and the adsorbed water is subsequently removed from said desiccant adsorbent by regeneration thereof with heated dry air effluent obtained in rinsing the air fractionating column with desorbed process nitrogen.

대표청구항 ▼

In a method for fractionation of ambient air containing water vapor and carbon dioxide by pressure swing adsorption with the simultaneous recovery of a dry oxygen-enriched product stream and a high purity nitrogen stream, wherein ambient air is initially subjected to pretreatment with a first adsorbent bed for selective adsorption of water vapor and carbon dioxide therefrom and the unadsorbed effluent from such pretreatment is subjected to contact with a second adsorbent bed selective in retention of nitrogen as opposed to oxygen while collecting the oxygen enriched effluent gas, and then followed in sequence by the steps of (1) rinsing the nitrogen-selective adsorbent bed and pretreatment adsorbent bed with high purity nitrogen passed co-currently through both said adsorbent beds while collecting the voids gas effluent, and (2) countercurrent desorption of nitrogen from said second adsorbent bed by pressure reduction and flowing said desorbed nitrogen at the reduced pressure through said first adsorbent bed, thereby inducing desorption of water and carbon dioxide therefrom while collecting the nitrogen rich gas effluent discharged from the first adsorbent bed, which effluent contains water and CO2 of the feed air; the improved method for recovering the resulting nitrogen as dry gas of high purity, which comprises: (a) passing the water and CO2-laden nitrogen rich gas effluent through a first of a second pair of desiccant beds containing solid adsorbent capable of retaining water and collecting the dried nitrogen effluent as product gas during a fixed time period short of water breakthrough from said desiccant bed; (b) during said fixed time period regenerating the companion desiccant bed, which is water laden, by passing through the said bed a stream of said voids gas at near ambient pressure and at elevated temperature; (c) and at the end of said fixed period switching the flow of the nitrogen rich effluent to the freshly regenerated companion bed while initiating regeneration of said first desiccant bed by the procedure defined in step (b).

이 특허에 인용된 특허 (1) 인용/피인용 타임라인 분석

Sircar Shivaji (Allentown PA) Zondlo John W. (Bethlehem PA), Fractionation of air by adsorption.
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이 특허를 인용한 특허 (44) 인용/피인용 타임라인 분석

Schmidt William P. (Allentown PA) Kumar Ravi (Allentown PA) Abel Alan D. (Allentown PA), Adsorptive nitrogen generation utilizing multiple adsorption beds.
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Kumar Ravi (Allentown PA), Adsorptive process for producing two gas streams from a gas mixture.
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Kumar Ravi (Allentown PA), Adsorptive process for producing two gas streams from a gas mixture.
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Kumar Ravi (Allentown PA) Sircar Shivaji (Wescosville PA) Kratz Wilbur C. (Macungie PA), Adsorptive process for the removal of carbon dioxide from a gas.
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Schmidt William P. (Allentown PA) Kumar Ravi (Allentown PA) Abel Alan D. (Allentown PA), Adsorptive separation utilizing multiple adsorption beds.
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Wright, Allen B.; Peters, Eddy J., Air collector with functionalized ion exchange membrane for capturing ambient CO2.
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Jain Ravi ; Tseng James K., Air purification process.
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Jain Ravi ; Tseng James K., Air purification process.
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Amlinger Heinrich,DEX, Alternating pressure apparatus for obtaining oxygen from the air and method for the operation thereof.
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Seery Major W., Bulk separation of carbon dioxide from methane using natural clinoptilolite.
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DiCenzo, Anthony M.; Bruschi, Joseph P.; Parlett, James G.; Galasso, Douglas Anthony; Crooks, Tab Hunter, CO2 collection methods and systems.
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Wright, Allen B.; Lackner, Klaus S.; Leon-Guerrero, Ed; Ginster, Ursula; Catterson, Tymothy; Madison, Karl; Ishikawa, Ryuhei; Grimm, George W.; Malcomson, Mark; Liu, Ping, Capture of carbon dioxide (CO2) from air.
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Gaffney Thomas Richard ; Golden Timothy Christopher ; Mayorga Steven Gerard ; Brzozowski Jeffrey Richard ; Taylor Fred William, Carbon dioxide pressure swing adsorption process using modified alumina adsorbents.
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Sircar Shivaji (Wescosville PA) Conrad Roger R. (Trexlertown PA) Koch William R. (Fleetwood PA), Closed-loop thermal regeneration of adsorbents containing reactive adsorbates.
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Smolarek James (Boston NY), Control of pressure swing adsorption operations.
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Koch, William R., Control system for air fractionation by selective adsorption.
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Prasad Ravi (East Amherst NY) Haas Oscar W. (Cheektowaga NY) Cheung Harry (Buffalo NY), Dry, high purity nitrogen production process and system.
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Werner Robert G. (Danbury CT) Fay Homer (Snyder NY), Enhanced pressure swing adsorption processing.
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Sircar Shivaji (Wescosville PA) Ambs William J. (Swarthmore PA) Conrad Roger R. (Trexlertown PA), Gas separation kinetics in commercial pellets.
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White ; Jr. Donald H. (923 Alfred La. Homer NY 13077), Heaterless adsorption system for combined purification and fractionation of air.
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Canfora Philip H. (Norton OH), High pressure oxygen production system.
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Haase, Richard Alan; Smaardyk, John, Manufacture of water chemistries.
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Arvind Venkatesh ; Mitchell S. Albert ; Jeffrey J. Spiegelman, Method and apparatus for delivering and recovering gasses.
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Wright, Allen B.; Lackner, Klaus S.; Ginster, Ursula, Method and apparatus for extracting carbon dioxide from air.
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Kawai, Masato; Nakamura, Akihiro; Hidano, Tatsuya, Method and system for separating gas.
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Amlinger Heinrich,DEX, Method for operating an alternating pressure apparatus for producing oxygen from the air.
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Baksh Mohamed Safdar Allie ; Notaro Frank, Method for production of nitrogen using oxygen selective adsorbents.
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Miller Geoffrey Q. (Chestnut Ridge NY), Multiple zone adsorption process.
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Frey Bill (Ellicott City MD) Haynie Mark (Glen Burnie MD) Psaras John (Arnold MD), Nitrogen generation system.
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Bansal Ravinder K. (East Amherst NY), Pressure swing absorption process and system for gas separation.
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Knaebel Kent S. (Plain City OH), Pressure swing adsorption.
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Armond John W. (Guildford GB2), Pressure swing adsorption plants.
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Lagree Dale A. (Williamsville NY) Leavitt Frederick W. (North Tonawanda NY), Pressure swing adsorption process for gas separation.
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Prasad Ravi (East Amherst NY), Process and system for the production of dry, high purity nitrogen.
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Agee, Kenneth L., Process to convert natural gas into liquid fuels and chemicals.
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Agee, Kenneth L., Process to convert natural gas into liquid fuels and chemicals.
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Haas Oscar W. (Cheektowaga NY) Prasad Ravi (East Amherst NY) Smolarek James (Boston NY), Production of dry, high purity nitrogen.
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Wright, Allen B.; Lackner, Klaus S.; Wright, Burton; Wallen, Matt; Ginster, Ursula; Peters, Eddy J., Removal of carbon dioxide from air.
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Bulow Martin (Basking Ridge NJ) Dao Loc (Bound Brook NJ) Fitch Frank R. (Bedminster NJ), Removal of carbon dioxide from gas streams.
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Reiss Gerhard (Leverkusen DEX), Separation of gas mixtures by vacuum swing adsorption (VSA) in a two-adsorber system.
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Sundaram, Narasimhan; Thomann, Hans; Corcoran, Jr., Edward W., Staged complementary PSA system for low energy fractionation of mixed fluid.
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Stanford Raymond A. (Rock Island IL), Super-enriched oxygen generator.
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Golden Timothy Christopher ; Kalbassi Mohammed Ali,GB2 ; Taylor Fred William ; Allam Rodney John,GB2, Use of zeolites and alumina in adsorption processes.
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Haase, Richard Alan, Water combustion technology—methods, processes, systems and apparatus for the combustion of hydrogen and oxygen.
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A	생활필수품
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A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Vacuum swing adsorption for air fractionation 원문보기