Title:
SYSTEM FOR REMOVING CARBON MONOXIDE AND METHOD FOR REMOVING CARBON MONOXIDE
Document Type and Number:
WIPO Patent Application WO/2000/053696
Kind Code:
A1
Abstract:
A method for removing carbon monoxide which is contained in an amount of 1,000 ppm to a few percentages in a gas to be treated being rich in hydrogen, such as the reformed gas obtained by reforming a fuel such as natural gas or methanol, which method, using a system comprising two CO-removing units, comprises a first step removing carbon monoxide by methanation in the presence of a catalyst in a first CO-remover and a second step removing residual carbon monoxide by a catalytic oxidation reaction with the use of an oxidizing agent in a second CO-remover. This method allows removing carbon monoxide very effectively, for example, to a level of tens of ppm or less (in some cases, 10 ppm) with a reduced loss of hydrogen even when carbon dioxide and methane are present.
Inventors:
ECHIGO MITSUAKI (JP)
SUZUKI MINORU (JP)
OKADA OSAMU (JP)
SUZUKI MINORU (JP)
OKADA OSAMU (JP)
Application Number:
PCT/JP1999/001083
Publication Date:
September 14, 2000
Filing Date:
March 05, 1999
Export Citation:
Assignee:
OSAKA GAS CO LTD (JP)
ECHIGO MITSUAKI (JP)
SUZUKI MINORU (JP)
OKADA OSAMU (JP)
ECHIGO MITSUAKI (JP)
SUZUKI MINORU (JP)
OKADA OSAMU (JP)
International Classes:
B01J23/755; C01B3/38; C01B3/58; C10K3/04; B01J23/40; H01M8/04; H01M8/06; (IPC1-7): C10K3/04; C01B3/58; H01M8/06; B01J23/40
Foreign References:
| JPS511675B1 | 1976-01-19 | |||
| JPH10212104A | 1998-08-11 | |||
| JPH06220468A | 1994-08-09 | |||
| JPH1029804A | 1998-02-03 | |||
| JPH1029803A | 1998-02-03 | |||
| JPH09266005A | 1997-10-07 | |||
| JPH09131531A | 1997-05-20 | |||
| JPH08133702A | 1996-05-28 |
Other References:
See also references of EP 1174486A4
Attorney, Agent or Firm:
Kitamura, Shuichiro (8-1 Toyosaki 5-chome Kita-ku Osaka-shi Osaka, JP)
Download PDF: