Patent ID: 11857915
Assignee: NGK INSULATORS, LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  Y | IPC B

Claim 0:
1. A gas separation method of separating carbon dioxide in a mixed gas, comprising:
a) preparing a separation membrane complex in which a separation membrane with pores having a mean pore diameter less than or equal to 1 nm is formed on a porous support; and
b) supplying a mixed gas that includes carbon dioxide and another gas from a side of said separation membrane to said separation membrane complex and obtaining a permeated gas by causing the carbon dioxide in said mixed gas to permeate through said separation membrane and said support,
wherein said operation b) is performed by feeding said mixed gas to said separation membrane in a state in which at least part of a permeation surface of said support, from which said permeated gas is exhausted has a temperature lower by 10° C. or more than a temperature of said mixed gas before being supplied to said separation membrane complex.