[특허]Method for liquefying a stream rich in hydrocarbons

[미국특허] Method for liquefying a stream rich in hydrocarbons 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F25J-001/00 F25B-007/00
출원번호	US-0403103 (2000-03-24)
우선권정보	DE9716415 (1997-04-18)
국제출원번호	PCT/EP98/02198 (1998-04-15)
§371/§102 date	20000324 (20000324)
국제공개번호	WO-9848227 (1998-10-29)
발명자 / 주소	Stockmann Rudolf,DEX Forg Wolfgang,DEX Bolt Manfred,DEX Steinbauer Manfred,DEX Pfeiffer Christian,DEX Paurola Pentti,NOX Fredheim Arne Olav,NOX Sorensen Oystein,NOX
출원인 / 주소	Den Norske Stats Oljeselskap A.S., NOX
대리인 / 주소	Millen, White, Zelano & Branigan, P.C.
인용정보	피인용 횟수 : 17 인용 특허 : 3

초록 ▼

The invention relates to a method for liquefying a stream rich in hydrocarbons, especially a stream of natural gas, by the indirect exchange of heat with the refrigerants in a closed-circuit cascade of mixed refrigerants. According to the invention, said closed-circuit cascade of mixed refrigerants consists of at least 3 circuits of mixed refrigerants, with each circuit comprising different refrigerants. The first of the three mixed refrigerant circuits is used for pre-cooling (E1), the second for liquefying E2), and the third for super-cooling (E3) the hydrocarbon-rich stream (1) to be liquefied. The method provided for in the invention reduces specific energy consumption and investment costs since the three circuits of mixed refrigerants are or can be optimally adjusted to the enthalpy temperature curves of the hydrocarbon-rich stream to be liquefied and the refrigerant mixtures.

대표청구항 ▼

[ What is claimed is:] [1.]1. A process for liquefying a hydrocarbon-rich stream by indirect heat exchange with the refrigerants of a mixed-refrigerant cascade cycle, wherein the mixed-refrigerant cascade cycle comprises at least 3 mixed-refrigerant cycles having different refrigerant compositions, the first of the 3 mixed-refrigerant cycles serves for precooling (E1), the second mixed-refrigerant cycles serves for liquefying (E2) and the third mixed-refrigerant cycles serves for subcooling (E1) the hydrocarbon-rich stream(1) to be liquefied, characterized in that the mixed-refrigerants are subcooled and either work expanded or subjected to Joule-Thomson expansion, and the resultant cooled gas is heated in indirect heat exchange with said hydrocarbon-rich stream, and the resultant vaporized mixed refrigerants are compressed at temperatures less than ambient temperature by at least two of the three cold-intake compressors (P3, L3, S3) each compressor compressing a different mixed refrigerant.

이 특허에 인용된 특허 (3) 인용/피인용 타임라인 분석

Houser Clarence G. (Houston TX) Yao Jame (Sugar Land TX) Andress Donald L. (Bartlesville OK) Low William R. (Bartlesville OK), Efficiency improvement of open-cycle cascaded refrigeration process.
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Liu Yu-Nan (Whitehall PA) Newton Charles L. (Bethlehem PA), Feed gas drier precooling in mixed refrigerant natural gas liquefaction processes.
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Low William R. (1000 Grandview Rd. Bartlesville OK 74006) Andress Donald L. (306 Stoneridge Bartlesville OK 74006) Houser Clarence G. (1803 SE. Harned Dr. Bartlesville OK 74006), Method of load distribution in a cascaded refrigeration process.
상세보기

이 특허를 인용한 특허 (17) 인용/피인용 타임라인 분석

Mohammad Abdul-Aziz Rashad ; Bayram Arman ; Arun Acharya, Cryogenic industrial gas refrigeration system.
상세보기
Martinez, Bobby D.; Thakkar, Shrikant R.; Hahn, Paul R.; Baudat, Ned P.; Qualls, Wesley R., Driver and compressor system for natural gas liquefaction.
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Roberts, Mark Julian, Integrated multiple-loop refrigeration process for gas liquefaction.
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Roberts,Mark Julian, Integrated multiple-loop refrigeration process for gas liquefaction.
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Roberts,Mark Julian, Integrated multiple-loop refrigeration process for gas liquefaction.
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Jager, Marco Dick, Method and apparatus for cooling a stream, in particular a hydrocarbon stream such as natural gas.
상세보기
Owen, Ryan Oliver; Jones, Jr., Guy Richard; Sawchuk, Jeffrey H., Natural gas liquefaction process.
상세보기
Robert Klein Nagel Voort NL, Plant for liquefying natural gas.
상세보기
Kimble, E. Lawrence; Bowen, Ronald R.; Minta, Moses; Winningham, H. Gary, Process for producing a pressurized liquefied gas product by cooling and expansion of a gas stream in the supercritical state.
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Lee,Guang Chung; Reyneke,Rian; Foral,Michael J.; Papadopoulos,Christos; Eng,Wayne W. Y.; Logsdon,Jeff, Refrigeration system.
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Ransbarger, Weldon L.; Evans, Megan V.; Praderio, Attilio J.; Messersmith, David B., System for incondensable component separation in a liquefied natural gas facility.
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Severinsky, Alexander J., Systems, methods, and compositions for production of synthetic hydrocarbon compounds.
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Severinsky, Alexander J., Systems, methods, and compositions for production of synthetic hydrocarbon compounds.
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Severinsky, Alexander J., Systems, methods, and compositions for production of synthetic hydrocarbon compounds.
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Severinsky, Alexander J., Systems, methods, and compositions for production of synthetic hydrocarbon compounds.
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Severinsky, Alexander J., Systems, methods, and compositions for production of synthetic hydrocarbon compounds.
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Verhulst, Michel Pieter Alfons, Variable speed drive system, method for operating a variable speed drive system and method for refrigerating a hydrocarbon stream.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
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] Method for liquefying a stream rich in hydrocarbons 원문보기