[특허]Reliquefaction of pressurized boil-off from pressurized liquid natural gas

[미국특허] Reliquefaction of pressurized boil-off from pressurized liquid natural gas 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F25J-001/00
출원번호	US-0422457 (1999-10-21)
발명자 / 주소	Kimble III E. Lawrence
출원인 / 주소	ExxonMobil Upstream Research Company
대리인 / 주소	Lawson
인용정보	피인용 횟수 : 10 인용 특허 : 37

초록 ▼

A process is disclosed for reliquefying boil-off gas produced by pressurized liquid natural gas. In this process, refrigeration duty is provided to a heat exchanger by means of a refrigeration cycle. Pressurized natural gas is cooled by the heat exchanger and then expanded to a lower pressure to produce a liquid stream that is passed to a first phase separator. A boil-off vapor is passed through the heat exchanger and it is then compressed and cooled before being recycled back through the heat exchanger. The compressed, cooled boil-off gas is then expanded and passed to a second phase separator. A vapor stream produced by the second separator is removed from the process. A liquid stream produced by the second phase separator is passed to the first phase separator to produce a pressurized liquid having a temperature above about -112.degree. C. and a pressure sufficient for the liquid to be at or below its bubble point.

대표청구항 ▼

[What is claimed is:] [1.](a) providing refrigeration duty to a heat exchanger by means of a refrigeration cycle;(b) passing pressurized natural gas through the heat exchanger to cool the natural gas, said pressurized natural gas being warmer than the pressurized boil-off gas;(c) expanding the cooled natural gas to a lower pressure, thereby liquefying at least part of the cooled natural gas, the liquefied gas having a temperature above about -112.degree. C. (-170.degree. F.) and a pressure sufficient for the liquefied gas to be at or below its bubble point;(d) separating in a first phase separator any vapor phase, if a vapor phase exists after the expansion of step (c), from the liquefied gas;(e) warming in the heat exchanger the boil-off gas to be reliquefied, thereby providing refrigeration duty to the heat exchanger;(f) compressing and cooling the warmed boil-off gas;(g) returning the compressed boil-off gas to the heat exchanger to further cool the compressed boil-off gas;(h) expanding the compressed boil-off gas to a lower pressure to produce a gas phase and a liquid phase;(i) phase separating in a second phase separator the gas phase and the liquid phase of step (h);(j) passing the liquid phase of step (i) to the first phase separator;(k) recovering vapors from the second phase separator; and(l) withdrawing liquid from the first phase separator as pressurized liquid natural gas having a temperature above about -112.degree. C. (-170.degree. F.) and a pressure sufficient for the liquid to be at or below its bubble point.

이 특허에 인용된 특허 (37) 인용/피인용 타임라인 분석

Selcukoglu Yuksel A. (Naperville IL) Husain Matloob (Wheaton IL) Hanke ; Jr. Carl C. (Oak Brook IL), Apparatus for reliquefying boil-off natural gas from a storage tank.
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Brundige ; Jr. Virgil L. (Grand Prairie TX), Arrangement and method for the production of liquid natural gas.
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Wolflick John R. (McKinney TX), Chilled gas transmission system and method.
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Newton, Charles L.; Stuber, Wayne G.; Patterson, Michael A., Deep flash LNG cycle.
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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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Marshall John (Ascot GB2) Oakey John D. (London GB2), Gas refrigeration method and apparatus.
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Creed Malcolm R. (Brentwood GB2) Gilmour Ronald B. (Woodford Green GB2), Gas storage and transmission systems.
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Campbell Roy E. (Midland TX) Wilkinson John D. (Midland TX), Hydrocarbon gas processing.
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Houshmand Mory (Salt Lake City UT) Kruger Kimberly A. (Salt Lake City UT) Alves Gerald W. (Sugar Land TX) Ostaszewski Ricardo (Sugar Land TX) Belhateche Noureddine (Katy TX), LNG production in cryogenic natural gas processing plants.
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Prevost Isabelle (Conflans Sainte Honorine FRX) Rojey Alexandre (Rueil Malmaison FRX), Method and apparatus for liquefaction of a natural gas.
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Low William R. (Bartlesville OK), Method and apparatus for liquefaction of natural gas.
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Grtz Gnther (Kaarst DEX), Method and arrangement for the compression of gas.
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Breivik Kare,NOX ; Fredheim Arne Olav,NOX ; Paurola Pentti,NOX, Method and system for offshore production of liquefied natural gas.
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Kikkawa Yoshitsugi (Kanagawa JPX) Yamamoto Osamu (Kanagawa JPX) Sakaguchi Junichi (Kanagawa JPX) Nakamura Moritaka (Kanagawa JPX), Method for liquefying natural gas.
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Durr Charles A. (Houston TX), Method for sub-cooling a normally gaseous hydrocarbon mixture.
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Pecoud Yves,FRX ; Briend Pierre,FRX ; Villard Jean-Claude,FRX ; Baguer Guy Gistau,FRX, Method of and plant for reliquefying gaseous helium.
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Nelson, Warren L.; Garcia, Luc, Method of liquefying natural gas.
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May Walter G. (Summit NJ) Shaneberger Donald E. (Port Murray NJ), Method of transporting gas.
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Bowen Ronald R. ; Cole Eric T. ; Kimble Edward L. ; Thomas Eugene R. ; Kelley Lonny R., Multi-component refrigeration process for liquefaction of natural gas.
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Stokes Charles A. (Naples FL), Pressure tank recycle system.
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Lofredo Antony (Springfield NJ), Process and apparatus for handling a vaporized gaseous stream of a cryogenic liquid.
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Voit Jurgen,DEX, Process and apparatus for liquefying low boiling gas such as nitrogen.
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von Linde Robert (Graefelfing DEX), Process and apparatus for the conveyance of real gases.
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Cole Eric T. ; Thomas Eugene R. ; Bowen Ronald R., Process for liquefying a natural gas stream containing at least one freezable component.
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Aghili Hafez K. (Katy TX), Process for separating hydrocarbon gas constituents.
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Aghili Hafez K. (Katy TX), Process for separating hydrocarbon gas constituents utilizing a fractionator.
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Chiu, Chen-hwa, Process for the liquefaction of natural gas.
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Hanson Thomas C. (Buffalo NY) Kun Leslie C. (Grand Island NY), Process to produce liquid cryogen.
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Cook Philip J. (Schnecksville PA), Reliquefaction of boil-off from liquefied natural gas.
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Stuber Wayne G. (Whitehall PA) Kovak Kenneth W. (Macungie PA), Reliquefaction of boil-off from liquefied natural gas.
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Ooka Isami (Osaka JPX) Hisazumi Yosinori (Osaka JPX), System for generation of electricity by utilization of heat exchange between liquefied natural gas and intermediate heat.
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Lynch Nancy Jean ; Bonaquist Dante Patrick ; Henry Paul Arthur, System for producing cryogenic liquid.
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Adorjan Alexander S. (Pearland TX), Underwater cryogenic pipeline system.
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Johansen Arne (Grimstad NOX), Unprocessed petroleum gas transport.
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Foglietta Jorge Hugo, Use of a turboexpander cycle in liquefied natural gas process.
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Hewitt J. Paul (P.O. Box 1091 Angleton TX 77515), Vapor recovery system.
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Hewitt J. Paul (P.O. Box 1091 Angleton TX 77515), Vapor recovery system.
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이 특허를 인용한 특허 (10) 인용/피인용 타임라인 분석

Chen, Fei; Liu, Yang; Krishnamurthy, Gowri; Ott, Christopher Michael; Roberts, Mark Julian, Integrated nitrogen removal in the production of liquefied natural gas using dedicated reinjection circuit.
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Ott, Christopher Michael; Krishnamurthy, Gowri; Chen, Fei; Liu, Yang; Roberts, Mark Julian, Integrated nitrogen removal in the production of liquefied natural gas using refrigerated heat pump.
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Granger, Darron, Natural gas vapor recondenser system.
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Kimble, E. Lawrence; Bowen, Ronald R.; Rigby, James R., Reliquefaction of boil-off from liquefied natural gas.
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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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Kimble, E. Lawrence; Rigby, James R.; Bowen, Ronald R., Unloading pressurized liquefied natural gas into standard liquefied natural gas storage facilities.
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[미국특허] Reliquefaction of pressurized boil-off from pressurized liquid natural gas 원문보기