发明授权
US06539748B2 Process and apparatus for the production of low pressure gaseous oxygen 失效
用于生产低压气态氧气的方法和设备

  • 专利标题: Process and apparatus for the production of low pressure gaseous oxygen
  • 专利标题(中): 用于生产低压气态氧气的方法和设备
  • 申请号: US10059997
    申请日: 2001-10-22
  • 公开(公告)号: US06539748B2
    公开(公告)日: 2003-04-01
  • 发明人: Alan Lindsay PrenticeRodney John Allam
  • 申请人: Alan Lindsay PrenticeRodney John Allam
  • 优先权: EP00309320 20001023
  • 主分类号: F25J100
  • IPC分类号: F25J100
Process and apparatus for the production of low pressure gaseous oxygen
摘要:
A process and apparatus for the production of low pressure gaseous oxygen (“GOX”) in which compressed and purified feed air (1) is cooled and at least partially condensed in heat exchange means (E1) having a warm end and a cold end and the cooled and at least partially condensed feed air (2) is then distilled in a cryogenic distillation column system (C1, C2). A liquid oxygen (“LOX”) product stream (8) is removed from the column system (C1, C2) and vaporized and warmed by heat exchange (E1) to produce GOX. LOX refrigerant (10) from an external source is used to provide a portion of the refrigeration duty required for the cooling and at least partial condensation of the feed air stream (1). The LOX refrigerant is injected into the heat exchange means (E1) either: (a) at a pressure greater than that of the LOX product entering the heat exchange means (E1); or (b) at a pressure substantially equal to that of the LOX product entering the heat exchange means and at an intermediate point between the warm and cold ends where the temperature of the heat exchange means is above the boiling temperature of the LOX refrigerant.
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