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Title: US6105390: Apparatus and process for the refrigeration, liquefaction and separation of gases with varying levels of purity
[ Derwent Title ]


Country: US United States of America

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19 pages

 
Inventor: Bingham, Dennis N.; Idaho Falls, ID
Wilding, Bruce M.; Idaho Falls, ID
McKellar, Michael G.; Idaho Falls, ID

Assignee: Bechtel BWXT Idaho, LLC, Idaho Falls, ID
other patents from BECHTEL BWXT IDAHO, LLC (765648) (approx. 113)
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Published / Filed: 2000-08-22 / 1998-12-16

Application Number: US1998000212490

IPC Code: Advanced: F25J 1/00; F25J 3/00; F25J 3/06;
IPC-7: F25J 1/00;

ECLA Code: F25J1/00; F25J1/00A6; F25J1/00A6B; F25J1/00C2E; F25J1/00C2E2; F25J1/00C2F; F25J1/00C2V; F25J1/02A; F25J1/02A2; F25J1/02Z4U; R25J205/10; R25J220/62; R25J220/64; R25J230/08; R25J230/30; R25J230/60; R25J245/02; R25J290/62;

U.S. Class: Current: 062/613; 062/619; 062/621; 062/910;
Original: 062/613; 062/619; 062/621; 062/910;

Field of Search: 062/611,613,619,621,87,910,5

Government Interest:

CONTRACTUAL ORIGIN OF THE INVENTION
    The United States has rights in this invention pursuant to Contract No. DE-AC07-94ID13223 between the U.S. Department of Energy and Lockheed Martin Idaho Technologies Company.

Priority Number:
1998-12-16  US1998000212490
1997-12-16  US1997000069698P

Abstract:     A process for the separation and liquefaction of component gasses from a pressurized mix gas stream is disclosed. The process involves cooling the pressurized mixed gas stream in a heat exchanger so as to condense one or more of the gas components having the highest condensation point; separating the condensed components from the remaining mixed gas stream in a gas-liquid separator; cooling the separated condensed component stream by passing it through an expander; and passing the cooled component stream back through the heat exchanger such that the cooled component stream functions as the refrigerant for the heat exchanger. The cycle is then repeated for the remaining mixed gas stream so as to draw off the next component gas and further cool the remaining mixed gas stream. The process continues until all of the component gases are separated from the desired gas stream. The final gas stream is then passed through a final heat exchanger and expander. The expander decreases the pressure on the gas stream, thereby cooling the stream and causing a portion of the gas stream to liquify within a tank. The portion of the gas which is not liquefied is passed back through each of the heat exchanges where it functions as a refrigerant.

Attorney, Agent or Firm: Workman Nydegger & Seeley ;

Primary / Asst. Examiners: Capossela, Ronald;

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Parent Case:

RELATED APPLICATION
    This application claims priority from provisional application Ser. No. 60/069,698 filed Dec. 16, 1997. For purposes of disclosure this provisional application is incorporated by reference.

Designated Country: AL AM AP AT AZ BA BB BG BR BY CH CN CU CZ EA EE ES FI GD GE GH GM HR HU ID IL IN IS KE KG  BE DE DK FR GB IT 

Family: Show 12 known family members

First Claim:
Show all 30 claims
We claim:     1. A compressorless process for separating and cooling a pressurized mixed gas stream having at least two components, wherein the latent energy of each individual, separated component is captured by the process to further cool the pressurized mixed gas stream, the process comprising the steps of:
  • a. cooling the mixed gas stream to a temperature below a condensation point of a first component within the mixed gas stream;
  • b. separating the condensed first component from the mixed gas stream, thereby creating a liquid first component stream;
  • c. cooling the liquid first component stream by expansion; and
  • d. using the expanded first component stream to cool the mixed gas stream.


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Description: Show description

Forward References: Show 23 U.S. patent(s) that reference this one

       
U.S. References: Go to Result Set: All U.S. references   |  Forward references (23)   |   Backward references (28)   |   Citation Link

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Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 4pp US2494120* 1950-01 Ferro, Jr.    
Get PDF - 5pp US3292380  1966-12 Bucklin   Method and equipment for treating hydrocarbon gases for pressure reduction and condensate recovery
Get PDF - 4pp US3323315  1967-06 Carr   Gas liquefaction employing an evaporating and gas expansion refrigerant cycles
Get PDF - 7pp US3362173  1968-01 Kniel   Liquefaction process employing cascade refrigeration
Get PDF - 6pp US3416324  1968-12 Swearingen   Liquefaction of a gaseous mixture employing work expanded gaseous mixture as refrigerant
Get PDF - 6pp US3548606  1970-12 Kuertson   SERIAL INCREMENTAL REFRIGERANT EXPANSION FOR GAS LIQUEFACTION
Get PDF - 4pp US3596473  1971-08 Streich  Messer Griescheim GmbH LIQUEFACTION PROCESS FOR GAS MIXTURES BY MEANS OF FRACTIONAL CONDENSATION
Get PDF - 4pp US3628340  1971-12 Meisler  Hydrocarbon Research, Inc. PROCESS FOR CRYOGENIC PURIFICATION OF HYDROGEN
Get PDF - 15pp US3724226  1973-04 Pachaly  Gulf Research & Development Company LNG EXPANDER CYCLE PROCESS EMPLOYING INTEGRATED CRYOGENIC PURIFICATION
Get PDF - 9pp US4128410  1978-12 Bacon  Gulf Oil Corporation Natural gas treatment
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Get PDF - 6pp US4645522  1987-02 Dobrotwir   Process for selectively separating petroleum fractions
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Get PDF - 12pp US5327730  1994-07 Myers et al.  American Gas & Technology, Inc. Method and apparatus for liquifying natural gas for fuel for vehicles and fuel tank for use therewith
Get PDF - 9pp US5375422  1994-12 Butts   High efficiency nitrogen rejection unit
Get PDF - 5pp US5390499  1995-02 Rhoades et al.  Liquid Carbonic Corporation Process to increase natural gas methane content
Get PDF - 8pp US5450728  1995-09 Vora et al.  Air Products and Chemicals, Inc. Recovery of volatile organic compounds from gas streams
Get PDF - 14pp US5537827  1996-07 Low et al.   Method for liquefaction of natural gas
Get PDF - 10pp US5600969  1997-02 Low  Phillips Petroleum Company Process and apparatus to produce a small scale LNG stream from an existing NGL expander plant demethanizer
Get PDF - 17pp US5615561  1997-04 Houshmand et al.  Williams Field Services Company LNG production in cryogenic natural gas processing plants
Get PDF - 8pp US5655388  1997-08 Bonaquist et al.  Praxair Technology, Inc. Cryogenic rectification system for producing high pressure gaseous oxygen and liquid product
Get PDF - 19pp US5669234  1997-09 Houser et al.  Phillips Petroleum Company Efficiency improvement of open-cycle cascaded refrigeration process
Get PDF - 24pp US5718126  1998-02 Capron et al.  Institut Francais du Petrole Process and device for liquefying and for processing a natural gas
Get PDF - 6pp US5755114  1998-05 Foglietta  ABB Randall Corporation Use of a turboexpander cycle in liquefied natural gas process
Get PDF - 6pp US5836173  1998-11 Lynch et al.  Praxair Technology, Inc. System for producing cryogenic liquid
  * some details unavailable
       
Foreign References: None

Other Abstract Info: CHEMABS 131(03)033493Q DERABS C1999-405052

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