Title:
ADVANCED REMOVAL OF CARBON DIOXIDE IN HIGH-PRESSURE RAW MATERIAL GAS, HIGH-PRESSURE RECOVERY AND APPARATUS THEREFOR
Document Type and Number:
Japanese Patent JP3675980
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for removing carbon dioxide in a high-pressure raw material gas by which the carbon dioxide at a high concentration in a natural gas or various gases under a high pressure is removed to a trace concentration with a carbon dioxide absorbent and the carbon dioxide is then recovered from the absorbent under a high pressure.
SOLUTION: A raw material gas l containing carbon dioxide is fed to a decarbonator column 2 and brought into contact with a liquid of a partial regenerating absorbent 21 in a lower absorbing section 3 to partially absorb the carbon dioxide. The resultant gas is then brought into contact with a liquid of a regenerating absorbent 22 in an upper absorbing section 4 to absorb the carbon dioxide until a minor concentration thereof attains. The carbon dioxide is further recovered from the regenerating absorbent 22 under a high pressure.
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Inventors:
Masaki Iijima
Kaoru Mitsuoka
Hiroshi Tanaka
Kaoru Mitsuoka
Hiroshi Tanaka
Application Number:
JP22654396A
Publication Date:
July 27, 2005
Filing Date:
August 28, 1996
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
C01B32/50; B01D53/62; C10J3/46; C10J3/72; C10L3/00; C10L3/10; (IPC1-7): C10L3/10; C01B31/20; C10J3/46; C10J3/72
Domestic Patent References:
| JP9100478A | ||||
| JP43019844B1 |
Attorney, Agent or Firm:
Nao Okuyama
Arihara Koichi
Shoichi Okuyama
Arihara Koichi
Shoichi Okuyama