Title:
METHOD FOR PRODUCING NITROGEN GAS, METHOD FOR SEPARATING GAS AND DEVICE FOR PRODUCING NITROGEN GAS
Document Type and Number:
WIPO Patent Application WO/2013/069768
Kind Code:
A1
Abstract:
A method for producing nitrogen gas from raw materials using a PSA method is characterized in that, using a second adsorbent charged in an auxiliary adsorption tank provided in line to connect two main adsorption tanks charged with a first adsorbent, the oxygen concentration in recovery gas drawn from the main adsorption tank operating under depressurization equalization is reduced, and said gas is conducted to the main adsorption tank operating under pressurization equalization.
Inventors:
KOKUBU MAKIYA (JP)
SAKAMOTO HIDEHISA (JP)
SAKAMOTO HIDEHISA (JP)
Application Number:
PCT/JP2012/079119
Publication Date:
May 16, 2013
Filing Date:
November 09, 2012
Export Citation:
Assignee:
TAIYO NIPPON SANSO CORP (JP)
International Classes:
B01D53/04; C01B21/04
Foreign References:
| JPH06154536A | 1994-06-03 | |||
| JPH05103937A | 1993-04-27 | |||
| JP2011156530A | 2011-08-18 | |||
| JPS5377878A | 1978-07-10 |
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
Masatake Shiga (JP)
Masatake Shiga (JP)
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Claims: