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

Claim 11:
12. A gas separator for separating carbon dioxide in a mixed gas, comprising:
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;
an outer cylinder that houses said separation membrane complex in an inner space;
a cooler that covers an outside surface of said outer cylinder and cools said separation membrane by cooling said outer cylinder; and
a gas supply part that supplies a mixed gas including carbon dioxide and another gas to said internal space of said outer cylinder and to said separation membrane complex from a side of said separation membrane,
wherein the carbon dioxide in said mixed gas is caused to permeate through said separation membrane and said support and is separated from said mixed gas 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 a gas having permeated through said separation membrane is exhausted, has a temperature lower by 10° C. or more than a temperature of the mixed gas before being supplied to the said separation membrane complex.