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    PROCESS AND APPARATUS FOR SEPARATING HYDROCARBON
    2.
    发明公开
    PROCESS AND APPARATUS FOR SEPARATING HYDROCARBON 审中-公开

    公开(公告)号：US20240200869A1

    公开(公告)日：2024-06-20

    申请号：US18592856

    申请日：2024-03-01

    申请人： TOYO ENGINEERING CORPORATION

    发明人： Keisuke SASAKURA ,  Taisei YAMAMOTO ,  Shoichi YAMAGUCHI

    IPC分类号： F25J3/02

    CPC分类号： F25J3/0238 ,  F25J3/0209 ,  F25J3/0219 ,  F25J3/0242 ,  F25J3/0295 ,  F25J2200/02 ,  F25J2200/38 ,  F25J2200/70 ,  F25J2205/04 ,  F25J2210/12 ,  F25J2210/60 ,  F25J2215/62 ,  F25J2215/64 ,  F25J2240/02 ,  F25J2270/06

    摘要： To provide a process for separating hydrocarbons capable of recovering ethane or propane, including improved cold heat recovery enabling a reduction in compressor power. A process for separating hydrocarbons, in which a residual gas enriched with methane or ethane and a heavy fraction enriched with a lower volatile hydrocarbon are separated, includes: a) partially condensing the feed gas by cooling using the residual gas and another refrigerant as a refrigerant, followed by vapor-liquid separation; b) depressurizing and supplying the liquid obtained from step (a) to the distillation column; c) expanding a part or all of the gas obtained from step (a) by an expander to cause partial condensation, followed by vapor-liquid separation; d) feeding the liquid obtained from step (c) to the distillation column after using it as the further refrigerant in step (a); e) feeding a part or all of the gas obtained from step (c) to the distillation column; and f) obtaining the residual gas from the top of the distillation column and the heavy fraction from the bottom of the distillation column.