[특허]Process for removing oxygen from crude argon

Process for removing oxygen from crude argon 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01D-053/22 B01D-071/02
출원번호	US-0528997 (1990-05-24)
발명자 / 주소	Chen, Michael S. Cook, Philip J.
출원인 / 주소	Air Products and Chemicals, Inc.
대리인 / 주소	Chase, Geoffrey L.Simmons, James C.Marsh, William F.
인용정보	피인용 횟수 : 34 인용 특허 : 29

초록 ▼

A process is provided for purifying argon gas, especially an argon gas stream obtained by cryogenically separating air, wherein the argon gas is heated and compressed, and then permeated through a solid electrolyte membrane selective to the permeation of oxygen over other components of the gas, and removing oxygen from the argon by selective permeation of oxygen through the membrane. The purified argon can then be distilled to remove other components such as nitrogen.

대표청구항 ▼

1. A process for purifying bulk argon which comprises recovering a crude bulk argon gas containing oxygen from a cryogenic, adsorptive or membrane separation of air, heating the crude argon gas to a temperature of from about 450° to 800° C. and compressing the crude argon gas to a pressure of about 30 to 80 psig, feeding the heated, compressed gas to a high temperature solid electrolyte membrane selective to the permeation of oxygen over other components of the gas, and separating oxygen from the argon gas by selective permeation of oxygen through the membrane. 2. The process of claim 1 wherein the oxygen in the argon gas stream is reduced to less than about 1 ppm. 3. The process of claim 2 wherein the oxygen gas is permeated through two or more membranes. 4. The process of claim 1 wherein the membrane is made of mixed conductors with mixed conductivity for oxygen ions and electrons. 5. The process of claim 4 wherein the oxygen is permeated through a doped zirconia membrane. 6. The process of claim 5 wherein the membrane is doped with yttrium oxide. 7. The process of claim 4 wherein the oxygen is permeated through a doped bismuth oxide membrane. 8. The process of claim 7 wherein the membrane is doped with yttrium oxide. 9. The process of claim 1 wherein a sweep gas is used to lower permeate oxygen pressure. 10. The process of claim 1 which comprises feeding the argon gas from the membrane to a distillation column to separate argon from any other components of the gas. 11. The process of claim 10 wherein nitrogen is separated from argon in the distillation column. 12. The process of claim 1 which comprises subjecting the argon gas from the membrane to hydrogen deoxidation. 13. The process of claim 12 which comprises feeding the argon gas from the hydrogen deoxidation to a distillation column to separate argon from any other components of the gas. 14. The process of claim 13 wherein nitrogen is separated from argon in the distillation column.

이 특허에 인용된 특허 (29)

Gaumer, Lee S., Air separation process with single distillation column for combined gas turbine system.
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Kumar Ravi (Allentown PA) Sircar Shivaji (Wescosville PA) White Thomas R. (Allentown PA) Greskovich Eugene J. (Allentown PA), Argon purification.
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Goddin ; Jr. Clifton S. (Tulsa OK) Turek Edward A. (Tulsa OK) George Boyd A. (Lisle IL), CO₂ Removal from high CO₂ content hydrocarbon containing streams.
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Olszewski Walter J. (Tonawanda NY) Ziemer John H. (Grand Island NY), Cryogenic system for producing low-purity oxygen.
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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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McElroy James F. (Suffield CT), Electrochemical hydrogen separator system for zero gravity water electrolysis.
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Joshi Ashok V. (Salt Lake City UT), Electrolyte assembly for oxygen generating device and electrodes therefor.
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Armond John W. (Great Bookham GB2), Gas separation.
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DeLong Bradley W. (Bartlesville OK) Burkinshaw Jeffrey R. (Casper WY), Gas separation.
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Doshi Kishore J. (Somers NY) Werner Robert G. (Danbury CT) Mitariten Michael J. (Peekskill NY), Integrated membrane/PSA process and system.
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DiMartino ; Sr. Stephen P. (Topton PA), Membrane drying of gas feeds to low temperature units.
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Blackmer Richard H. (Scotia NY) Hedman Jonathan W. (Burnt Hills NY), Membrane oxygen enricher apparatus.
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Walsh John V. (Glendora CA), Method and system for the removal of oxides of nitrogen and sulfur from combustion processes.
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Henis Jay M. S. (Creve Coeur MO) Tripodi Mary K. (Creve Coeur MO), Multicomponent membranes for gas separations.
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McDonald, George H.; Manatt, Scott A., Oxygen enrichment system.
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Erickson Donald C. (1704 S. Harbor La. Annapolis MD 21401), Oxygen production by molten alkali metal salts.
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Chong ; Victor M. ; Seitzer ; Walter H., Oxygen separation with membranes.
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Lawless, William N., Oxygen separator.
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Prasad Ravi (East Amherst NY), Process and system for the production of dry, high purity nitrogen.
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Rice Arthur W. (O\Fallon MO), Process for capturing nitrogen from air using gas separation membranes.
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Hegarty, William P., Process for producing by-product oxygen from turbine power generation.
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Gessner David M. (Worcester MA), Process for producing oxygen-enriched gas.
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Choe Jung S. (Allentown PA) Agrawal Rakesh (Allentown PA) Auvil Steven R. (Macungie PA), Process for recovering helium from a multi-component gas stream.
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Auvil Steven R. (Macungie PA) Agrawal Rakesh (Allentown PA), Process for recovering hydrogen from a multi-component gas stream.
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Duckett Melvyn (Stockport GBX) Limb David I. (Stockport GBX), Recovery of carbon dioxide from gas mixture.
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Mannatt Scott A. (Granada Hills CA), Self adjusting oxygen enrichment system.
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Erickson Donald C. (1704 S. Harbor La. Annapolis MD 21401), Separation of oxygen from gaseous mixtures with molten alkali metal salts.
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Yoshisato Eishin (Iwakuni JPX) Azuma Shizuo (Iwakuni JPX) Yamaji Teizo (Yamaguchi JPX), Solid electrolyte.
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Gordon Arnold Z. (Lyndhurst OH), Solid state electrochemical pollution control device.
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A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Process for removing oxygen from crude argon 원문보기

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Process for removing oxygen from crude argon 원문보기

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