Title:
METHOD OF REDUCING AMINE MIST IN DECARBONATION COLUMN
Document Type and Number:
Japanese Patent JP3416443
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce the quantity of mist which is formed for amine to combine with carbon dioxide by specifying gas-liquid contact temperature in the whole area in which gas-liquid contact of the decarbonator is performed in a decarbonator, where water solution of amine liq. absorbent takes up carbon dioxide by gas-liquid contact.
SOLUTION: Waste combustion gas 1 containing carbon dioxide is fed to below a carbon dioxide absorbing part 3 in a decarbonator 2 and liq. absorbent is fed from a top of the carbon oxide absorbing part 3 to subject them to gas- liquid contact to absorb carbon dioxide in the waste gas. The carbon dioxide absorbing part 3 is divided in multiple stages, and the required quantity of the liq. absorbent in each stage is taken out to the outside and after it is cooled to prescribed temperature by an outer heat exchanger 21, it is returned again to the carbon dioxide absorbing part 3. In this way, the liq. absorbent and the waste combustion gas 1 in the decarbonator 2 are cooled to keep the gas- liquid contact temperature to 50°C or below. The residual gas rises in an amine recovery part 4 and is subjected to gas-liquid contact with water fed from a top of the amine recovery part 4 to recover the entrained amine into a water phase.
Inventors:
Masaki Iijima
Kaoruaki Mitsuoka
Hiroshi Tanaka
Kaoruaki Mitsuoka
Hiroshi Tanaka
Application Number:
JP2723997A
Publication Date:
June 16, 2003
Filing Date:
January 27, 1997
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
B01D53/34; B01D53/14; B01D53/62; (IPC1-7): B01D53/62; B01D53/14; B01D53/34
Domestic Patent References:
| JP53131972A | ||||
| JP5496475A | ||||
| JP4310213A | ||||
| JP7103685A | ||||
| JP7103674A | ||||
| JP3505178A |
Attorney, Agent or Firm:
Okuyama Shoichi (2 outside)