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Title:
METHOD FOR RECOVERING OLEFIN
Document Type and Number:
WIPO Patent Application WO/2021/039273
Kind Code:
A1
Abstract:
Provided is a method for recovering, by pressure swing adsorption, unreacted olefins from a stream of a chemical reaction process in which an olefin is used as a material, the method enables desorption of gas at a relatively high desorption operation pressure, more preferably at a pressure not lower than the atmospheric pressure, and enables reuse of a separation agent. As the separation agent, a metal complex is used, in which pressure P3 at which a local maximum of dA/dP is obtained during adsorption and pressure P4 at which a local maximum of dA/dP is obtained during desorption are located between an adsorption operation pressure P1 and a desorption operation pressure P2, where dA/dP represents a value obtained by differentiating A by P, assuming that an olefin adsorption amount (A) is a function of an adsorption pressure (P), i.e., A = f(P), on an adsorption isotherm indicating the pressure (P) and the adsorption amount (A).

Inventors:
WATANABE YOSHIHIRO (JP)
OKUMURA YOSHIKUNI (JP)
Application Number:
PCT/JP2020/029335
Publication Date:
March 04, 2021
Filing Date:
July 30, 2020
Export Citation:
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Assignee:
SHOWA DENKO KK (JP)
International Classes:
C07C7/12; B01D53/047; B01J20/22; B01J20/34; C07C11/04
Domestic Patent References:
WO2013115033A12013-08-08
WO2014103778A12014-07-03
WO2015012067A12015-01-29
WO2015012069A12015-01-29
WO2015012396A12015-01-29
Foreign References:
JP2013063951A2013-04-11
US20030073788A12003-04-17
JP2003144827A2003-05-20
JP2018523730A2018-08-23
US4769047A1988-09-06
JP2011219471A2011-11-04
JP2018089577A2018-06-14
Other References:
KAZUHIRO UEMURASUSUMU KITAGAWA, EXPECTED MATERIALS FOR THE FUTURE, vol. 2, 2002, pages 44 - 51
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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