Title:
CARBON DIOXIDE SEPARATION METHOD
Document Type and Number:
WIPO Patent Application WO/2017/073518
Kind Code:
A1
Abstract:
[Problem] To provide a carbon dioxide separation method in which an acid gas removal process using an absorbing liquid is combined with a membrane separation using an inorganic separation membrane, such that, during the separation of carbon dioxide from a mixed gas containing carbon dioxide and methane, it is possible to reduce the energy consumption of the acid gas removal process using an absorbing liquid while inhibiting both a reduction in the yield resulting from methane permeation during the membrane separation and the energy loss accompanying said reduction. [Solution] The present invention makes it possible to implement an appropriate distribution condition by identifying a suitable range for the carbon dioxide mole fraction XCO2 at the outlet of the carbon dioxide non-permeable side of a membrane separation, said range corresponding to the ideal separation factor of an inorganic separation membrane, when carbon dioxide is separated via an acid gas removal process using an absorbing liquid after being membrane-separated from a mixed gas containing carbon dioxide and methane via a separation membrane system using the inorganic separation membrane.
Inventors:
KAWAZUISHI KENICHI (JP)
IWAMURA MASAYUKI (JP)
IWAMURA MASAYUKI (JP)
Application Number:
PCT/JP2016/081454
Publication Date:
May 04, 2017
Filing Date:
October 24, 2016
Export Citation:
Assignee:
CHIYODA CORP (JP)
MITSUBISHI CHEM CORP (JP)
MITSUBISHI CHEM CORP (JP)
International Classes:
B01D53/22; B01D53/14; B01D71/02; C10L3/10
Foreign References:
| JP2012236134A | 2012-12-06 | |||
| JP2012149002A | 2012-08-09 | |||
| JP2012066242A | 2012-04-05 |
Attorney, Agent or Firm:
HATA, Masanori (JP)
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