Title:
MIXED GAS SEPARATION METHOD AND MIXED GAS SEPARATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/255055
Kind Code:
A1
Abstract:
This mixed gas separation method involves: a step (step S11) for preparing a separation membrane (12); and a step (step S12) for supplying, to the separation membrane (12), a mixed gas including multiple kinds of gases, and causing a gas with high permeability in the mixed gas to permeate the separation membrane (12) to separate same from the mixed gas. When the difference between the supply side pressure, which is the gas pressure on the primary side of the separation membrane (12), and the permeation side pressure, which is the gas pressure on the secondary side of the separation membrane (12), is denoted as ΔP, and the Joule–Thomson coefficient is denoted as A, the difference ΔT between the supply side temperature, which is the gas temperature on the primary side of the separation membrane (12), and the permeation side temperature, which is the gas temperature on the secondary side of the separation membrane (12), is set to be less than 90% of A·ΔP by setting the Nu number of the mixed gas to be 2-10, in step S12. Reduction in permeation speed of the permeation gas can be suppressed thereby.
Inventors:
KOBAYASHI KOH (JP)
SHIMIZU KATSUYA (JP)
MIURA AYA (JP)
NODA KENICHI (JP)
SHIMIZU KATSUYA (JP)
MIURA AYA (JP)
NODA KENICHI (JP)
Application Number:
PCT/JP2022/020070
Publication Date:
December 08, 2022
Filing Date:
May 12, 2022
Export Citation:
Assignee:
NGK INSULATORS LTD (JP)
International Classes:
B01D63/06; B01D53/22; B01D69/00; B01D69/04; B01D71/02
Domestic Patent References:
| WO2017056134A1 | 2017-04-06 | |||
| WO2017150737A1 | 2017-09-08 | |||
| WO2020157830A1 | 2020-08-06 |
Foreign References:
| JPH06319934A | 1994-11-22 | |||
| JP2018511472A | 2018-04-26 |
Attorney, Agent or Firm:
MATSUSAKA, Masahiro et al. (JP)
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