Title:
GAS SEPARATION METHOD AND GAS SEPARATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/117362
Kind Code:
A1
Abstract:
A gas separation method in which a separation membrane sheet that selectively permits permeation of a specific gas component is used. The separation membrane sheet has a first porous layer, a separation function layer laminated on the first porous layer, and a second porous layer laminated on the side of the first porous layer opposite from the separation function layer. The separation function layer is a non-porous resin composition layer, and the first porous layer and the second porous layer are porous layers different to each other. The average pore diameter of the first porous layer is 0.005 to 1 μm inclusive. The thickness of the first porous layer is 5 to 150 μm inclusive. The basis weight of the second porous layer is 10g/m2 to 200g/m2 inclusive. The gas separation method includes a step for feeding a raw material gas containing at least a specific gas component from the side of the separation membrane sheet opposite from the second porous layer. In the feeding step, the pressure P [MPaA] of the raw material gas and the basis weight deviation s [g/m2] of the second porous layer satisfies the relationship of expression (1).
Expression 1: P ≤ 1/s
Inventors:
TAKEMOTO HIRONORI (JP)
GONG YING (JP)
GONG YING (JP)
Application Number:
PCT/JP2020/040120
Publication Date:
June 17, 2021
Filing Date:
October 26, 2020
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
B01D69/00; B01D53/22; B01D69/02; B01D69/10; B01D69/12
Domestic Patent References:
| WO2019065493A1 | 2019-04-04 | |||
| WO2015015802A1 | 2015-02-05 | |||
| WO2016117349A1 | 2016-07-28 | |||
| WO2014021133A1 | 2014-02-06 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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