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특허 상세정보

Air fractionation by pressure swing adsorption

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B01D-053/04   
미국특허분류(USC) 55/26 ; 55/33 ; 55/62 ; 55/68
출원번호 US-0159086 (1980-06-13)
발명자 / 주소
  • Sircar Shivaji (Allentown PA)
출원인 / 주소
  • Air Products and Chemicals, Inc. (Allentown PA 02)
인용정보 피인용 횟수 : 32  인용 특허 : 4
초록

Improved oxygen recovery in the operation of a pressure swing adsorption system for air fractionation is obtained by passng the air, freed of water and CO2, through an adsorbent bed maintained at elevated temperature throughout the cycle and which is selective for retention of nitrogen, and consequent withdrawal of an oxygen-rich primary effluent product. In a preferred embodiment ambient air is passed through a pretreater section providing an adsorbent bed for removal of water and carbon dioxide. The thus purified air is compressed with consequent rise ...

대표
청구항

In the method of producing oxygen-enriched air from ambient air, by pressure swing adsorption scheme, whereby nitrogen is selectively adsorbed on an adsorbent and an oxygen-enriched effluent stream is discharged as primary product, in a system comprising a plurality of main adsorbent beds operated in parallel in timed sequence, the improvement which comprises the following steps carried in recited cyclic sequence: (1) during an adsorption step introducing the feed air, previously freed of water and CO2, at elevated temperature and at superatmospheric pre...

이 특허를 인용한 특허 (32)

  1. Thelen, John E., Adsorbent fractionator directional flow control valve assembly apparatus and method.
  2. Kumar Ravi (Allentown PA) Sircar Shivaji (Wescosville PA) Kratz Wilbur C. (Macungie PA), Adsorptive process for the removal of carbon dioxide from a gas.
  3. Peake, Steven C.; Raleigh, Timothy T., Air drying system for OBOGS.
  4. Masato Kawai JP; Morimitsu Nakamura JP; Shigeo Tooyama JP, Gas purification method.
  5. Gupta, Ramesh; Deckman, Harry W.; Leta, Daniel P., Gas purification process utilizing engineered small particle adsorbents.
  6. Fox, Timothy J.; Thelen, John E., Heat reactivated adsorbent gas fractionator and process.
  7. Canfora Philip H. (Norton OH), High pressure oxygen production system.
  8. Hempenstall George T. (520 Woodlake Dr. Louisville ; KY 40223), Improved method for the ignition and combustion of particulates in diesel exhaust gases.
  9. Sundaram, Narasimhan, Increasing scales, capacities, and/or efficiencies in swing adsorption processes with hydrocarbon gas feeds.
  10. Haase, Richard Alan; Smaardyk, John, Manufacture of water chemistries.
  11. Pike, Reginald A., Method for preparing air for separation by rectification.
  12. Frey Bill (Ellicott City MD) Haynie Mark (Glen Burnie MD) Psaras John (Arnold MD), Nitrogen generation system.
  13. Shivaji Sircar ; William Emil Waldron, Oxygen production by adsorption.
  14. Neill Allastair,CAX ; Leavitt Frederick Wells ; Figueiredo Antonio Felippe Zaccur,BRX, Oxygen recovery pressure swing adsorption process.
  15. Pinkerton Charles J. (2528 E. Terrace ; Apt. B Anaheim CA 92806), Portable oxygen enrichment and concentration system.
  16. Hill Joel D. (Tulsa OK), Pressure swing absorption system.
  17. Lagree Dale A. (Williamsville NY) Leavitt Frederick W. (North Tonawanda NY), Pressure swing adsorption process for gas separation.
  18. Verrando Marcel G. (Ocala FL) White Donald H. (Homer NY) Koslow Evan E. (Westport CT) Barkley Phillip G. (Cortland NY), Pressure-swing adsorption system and method for NBC collective protection.
  19. Kamakoti, Preeti; Leta, Daniel P.; Deckman, Harry W.; Ravikovitch, Peter I.; Anderson, Thomas N., Pressure-temperature swing adsorption process.
  20. Ravikovitch, Peter I.; Johnson, Robert A.; Deckman, Harry W.; Anderson, Thomas N., Pressure-temperature swing adsorption process for the separation of heavy hydrocarbons from natural gas streams.
  21. Bachleitner, Walter; Erdmann, Christoph; Rohovec, Joachim; Bulan, Andreas; Weis, Mathias, Process and apparatus for the electrolysis of an aqueous solution of hydrogen chloride or alkali chloride in an electrolytic cell.
  22. Rohde Wilhelm (Munich DEX) Klein ; deceased Gnter (late of Neuried DEX), Process for regeneration of adsorbers.
  23. Georges Kraus FR; Patrick Le Bot FR; Lian-Ming Sun FR, Process for the treatment of a gas by temperature swing adsorption.
  24. Leta, Daniel P.; Deckman, Harry W.; Ravikovitch, Peter I.; Derites, Bruce A., Rapid temperature swing adsorption contactors for gas separation.
  25. Sircar Shivaji (Wescosville PA), Regeneration of adsorbents.
  26. Brahmbhatt,Sudhir R., Regeneration of adsorption beds using heated nitrogen.
  27. Kumar Ravi (Allentown PA), Removal of water and carbon dioxide from atmospheric air.
  28. Leta, Daniel P.; Kamakoti, Preeti; Johnson, Jack W.; Ravikovitch, Peter I.; Deckman, Harry, Selective sulfur removal process.
  29. Deckman, Harry W., Swing adsorption processes utilizing controlled adsorption fronts.
  30. Sircar Shivaji (Wescosville PA) Golden Timothy C. (Allentown PA), Technique for surface oxidation of activated carbon.
  31. Leta, Daniel P.; Kamakoti, Preeti; Deckman, Harry W.; Ravikovitch, Peter I.; Anderson, Thomas N., Temperature swing adsorption process for the separation of target species from a gas mixture.
  32. Haase, Richard Alan, Water combustion technology—methods, processes, systems and apparatus for the combustion of hydrogen and oxygen.