Claims
- 1. A process for separating a specific component from air by feeding air to a gas separation membrane module, which comprises the steps of: alternately and repeatedly feeding air under pressure to a non-porous gas separation membrane of a module selected from the group consisting of a plate-and-frame module, a spiral module and a hollow fiber module; and suctioning of a permeating gas under vacuum after feeding of air is stopped.
- 2. The process according to claim 1, wherein each step is repeatedly carried out at a cycle time of 2 seconds to 5 minutes.
- 3. The process according to claim 1, wherein one pump is commonly used for pressurization and pressure reduction.
- 4. The process according to claim 1, wherein different pumps are used for pressurization and pressure reduction, respectively.
Priority Claims (1)
Number |
Date |
Country |
Kind |
62-208500 |
Aug 1987 |
JPX |
|
Parent Case Info
This application is a continuation-in-part application of application Ser. No. 233,600 filed Aug. 18, 1988, now abandoned.
US Referenced Citations (7)
Foreign Referenced Citations (12)
Number |
Date |
Country |
625947 |
Aug 1961 |
CAX |
0051469 |
May 1982 |
EPX |
0099868 |
Feb 1984 |
EPX |
0305120 |
Mar 1989 |
EPX |
2411024 |
Jul 1979 |
FRX |
58-055310 |
Apr 1983 |
JPX |
59-082903 |
May 1984 |
JPX |
59-203705 |
Nov 1984 |
JPX |
62-030524 |
Feb 1987 |
JPX |
62-074405 |
Apr 1987 |
JPX |
62-074433 |
Apr 1987 |
JPX |
62-083022 |
Apr 1987 |
JPX |
Non-Patent Literature Citations (1)
Entry |
European Search Report for No. 88307702.6. |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
233600 |
Aug 1988 |
|