Title:
SEPARATION METHOD OF CARBON HYDRIDE AND SEPARATION DEVICE
Document Type and Number:
Japanese Patent JP2021076261
Kind Code:
A
Abstract:
To provide a separation method of a carbon hydride which is improved so as to reduce the power of a compressor, and can collect ethane or propane including the collection of cold heat.SOLUTION: In a separation method of a carbon hydride for separating a residual gas in which methane or ethane is enriched, and a heavy residual amount in which a further-lower volatile carbon hydride is enriched by using a distillation tower, a) a material gas is cooled by using the residual gas and a different refrigerant, partially condensed, and after that, gas-liquid separated; b) liquid which is obtained from a process a is decompressed, and supplied to the distillation tower; c) a part or the whole of a gas obtained from the process a is expanded by an expander, partially condensed, and after that, gas-liquid separated; d) liquid which is obtained from a process c is supplied to the distillation tower after using it as the different refrigerant in the process a; e) a part or the whole of a gas obtained from the process c is supplied to the distillation tower; and f) the residual gas is obtained from a tower apex of the distillation tower, and the heavy residual amount is obtained from a tower bottom part.SELECTED DRAWING: Figure 1
Inventors:
SASAKURA KEISUKE
YAMAMOTO TAISEI
YAMAGUCHI SHOICHI
YAMAMOTO TAISEI
YAMAGUCHI SHOICHI
Application Number:
JP2019200772A
Publication Date:
May 20, 2021
Filing Date:
November 05, 2019
Export Citation:
Assignee:
TOYO ENGINEERING CORP
International Classes:
F25J3/02; C07C7/09; C07C9/06; F25J3/06
Domestic Patent References:
| JP2015531851A | 2015-11-05 | |||
| JP2006510867A | 2006-03-30 |
Foreign References:
| WO2005009930A1 | 2005-02-03 | |||
| WO2017157817A1 | 2017-09-21 | |||
| US20150308735A1 | 2015-10-29 | |||
| US20140060113A1 | 2014-03-06 |
Attorney, Agent or Firm:
Akio Miyazaki
Masaaki Ogata
Masaaki Ogata