Title:
【発明の名称】湿式排煙脱硫装置
Document Type and Number:
Japanese Patent JP3332678
Kind Code:
B2
Abstract:
This invention relates to a wet flue gas desulfurization apparatus comprising: an absorption tower having defined in the lower part thereof a tank for holding a calcium compound-containing slurry fed thereto; a circulating pump for delivering the slurry within the tank to the upper part of the absorption tower in order to bring it into contact with flue gas; air supply means for supplying air to the tank for purposes of oxidation; a withdrawal pump for withdrawing the slurry within the tank in order to recover gypsum formed as a by-product or discharge waste water; falling slurry withdrawal means for withdrawing part of the slurry delivered to the upper part of the absorption tower by means of the circulating pump and falling through the absorption tower at a position above the liquid surface of the tank; and mixing means for the slurry withdrawn by the falling slurry withdrawal means with the slurry withdrawn from the tank by the withdrawal pump, whereby oxidizing substances produced in the tank of the absorption tower can be decreased by reduction.
Inventors:
Kiyoshi Okazoe
Eiji Ochi
Tohru Takashina
Susumu Okino
Eiji Ochi
Tohru Takashina
Susumu Okino
Application Number:
JP19849195A
Publication Date:
October 07, 2002
Filing Date:
August 03, 1995
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
B01D53/34; B01D53/50; B01D53/77; (IPC1-7): B01D53/50; B01D53/34; B01D53/77
Domestic Patent References:
| JP6277445A | ||||
| JP6488246A | ||||
| JP6022921A |
Attorney, Agent or Firm:
Ryoichi Hagiwara (2 others)