发明授权
US07550030B2 Process and apparatus to recover high purity carbon dioxide 失效
回收高纯度二氧化碳的方法和设备

  • 专利标题: Process and apparatus to recover high purity carbon dioxide
  • 专利标题(中): 回收高纯度二氧化碳的方法和设备
  • 申请号: US11395138
    申请日: 2006-04-03
  • 公开(公告)号: US07550030B2
    公开(公告)日: 2009-06-23
  • 发明人: Ravi Kumar
  • 申请人: Ravi Kumar
  • 申请人地址: US CT Danbury
  • 专利权人: Praxair Technology, Inc.
  • 当前专利权人: Praxair Technology, Inc.
  • 当前专利权人地址: US CT Danbury
  • 代理商 Salvatore P. Pace
  • 主分类号: B01D53/047
  • IPC分类号: B01D53/047
Process and apparatus to recover high purity carbon dioxide
摘要:
The present invention generally relates to vacuum pressure swing adsorption (VPSA) processes and apparatus to recover carbon dioxide having a purity of approximately ≧90 mole % from streams containing at least carbon dioxide and hydrogen (e.g., syngas). The feed to the CO2 VPSA unit can be at super ambient pressure. The CO2 VPSA unit produces three streams, a H2-enriched stream, a H2-depleted stream and a CO2 product stream. When the CO2 VPSA unit is installed between an SMR/shift reactor and a H2 PSA unit, hydrogen recovery is expected to be increased by extracting CO2, thereby increasing hydrogen partial pressure in the H2 PSA feed. The recovered CO2 can be further upgraded, sequestered or used in applications such as enhanced oil recovery (EOR).
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