Invention Grant
US08434326B2 Method and apparatus for liquefying a hydrocarbon stream 有权
用于液化烃流的方法和装置

  • Patent Title: Method and apparatus for liquefying a hydrocarbon stream
  • Patent Title (中): 用于液化烃流的方法和装置
  • Application No.: US12293906
    Application Date: 2007-03-16
  • Publication No.: US08434326B2
    Publication Date: 2013-05-07
  • Inventor: Intan Agustina AmbariHsiao Teing Lee
  • Applicant: Intan Agustina AmbariHsiao Teing Lee
  • Applicant Address: US TX Houston
  • Assignee: Shell Oil Company
  • Current Assignee: Shell Oil Company
  • Current Assignee Address: US TX Houston
  • Priority: EP06111666 20060324
  • International Application: PCT/EP2007/052490 WO 20070316
  • International Announcement: WO2007/110331 WO 20071004
  • Main IPC: F25J3/00
  • IPC: F25J3/00
Method and apparatus for liquefying a hydrocarbon stream
Abstract:
The present invention relates to a method of liquefying a hydrocarbon stream such as a natural gas stream, the method at least comprising the steps of: supplying a partly condensed feed stream (10) having a pressure above 60 bar to a first separator (2) wherein it is separated into a gaseous stream (20) and a liquid stream (30); expanding the liquid stream (30) and the gaseous stream (20) and subsequently feeding them into the distillation column (3); removing from the distillation column (3) a gaseous overhead stream (80), partially condensing it, feeding it (90) into a second separator (8) thereby obtaining a liquid stream (100) and a gaseous stream (110), feeding the liquid stream (100) into the distillation column (3) and liquefying the gaseous stream (110) thereby obtaining a liquefied stream (200); wherein the gaseous overhead stream (80) is partially condensed by heat exchanging against the expanded gaseous stream (60) before it (70) is fed into the distillation column (3); and wherein the gaseous stream (110) is removed from the second separator but before it (160) is liquefied, is heat exchanged against the feed stream (10a), thereby partially condensing the feed stream (10a).
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