Title:
炭化水素の分離方法及び分離装置
Document Type and Number:
Japanese Patent JP7390860
Kind Code:
B2
Abstract:
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.
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Inventors:
Keisuke Sasakura
Daio Yamamoto
Shoichi Yamaguchi
Daio Yamamoto
Shoichi Yamaguchi
Application Number:
JP2019200772A
Publication Date:
December 04, 2023
Filing Date:
November 05, 2019
Export Citation:
Assignee:
Toyo Engineering Corporation
International Classes:
C07C7/04; C07C9/04; C07C9/06; F25J3/02; F25J3/06
Domestic Patent References:
| JP4452239B1 | ||||
| JP2015531851A | ||||
| JP2006510867A |
Foreign References:
| US20020166336 | ||||
| WO2017157817A1 | ||||
| US20150308735 | ||||
| US20140060113 |
Attorney, Agent or Firm:
Akio Miyazaki
Masaaki Ogata
Masaaki Ogata