Title:
SEPARATION OF ALKALI OR ACID COMPOSITION IN WASTE GAS
Document Type and Number:
Japanese Patent JP3542823
Kind Code:
B2
Abstract:
PURPOSE: To easily and efficiently separate an acid or an alkali incorporated in waste gas.
CONSTITUTION: The waste gas is brought into contact with a filler 1 consisting of a cation exchange fiber or an anion exchange fiber to separate alkali or acid composition being impurity. A spacer forming a waste gas passage is held to an ion exchange fiber sheet and lapped and packed in a separating tower 2, and the waste gas is run along a sheet surface while making the gas collide to a surface of the ion exchange fiber sheet preferably. The ion exchange fiber can be regenerated in a short time by bringing it into contact with small amount of acid or alkali regenerating liq. 6 during continuation of separation operation. Mist is not contaminated, a device is simple, and the method is suitable as a treating method of a gas circulating or replenishing to a clean room in combination with a gas desalting filter 8. Since the waste gas is treated substantially in dry state, a maintenance of constant temp. and constant humidity of circulating gas is easy and energy saving is effectively obtained.
Inventors:
Akiyuki Saito
Satoshi Unohara
Mitsunobu Masuda
Masanori Shiraishi
Naoki Irie
Satoshi Unohara
Mitsunobu Masuda
Masanori Shiraishi
Naoki Irie
Application Number:
JP16923094A
Publication Date:
July 14, 2004
Filing Date:
July 21, 1994
Export Citation:
Assignee:
Toshiba Plant Systems Co., Ltd.
Dan Takuma Co., Ltd.
Dan Takuma Co., Ltd.
International Classes:
B01D53/34; B01D53/40; B01D53/42; (IPC1-7): B01D53/42; B01D53/34; B01D53/40
Domestic Patent References:
| JP6126123A | ||||
| JP62102045A | ||||
| JP40023151Y1 | ||||
| JP5123533A | ||||
| JP63093327A |
Attorney, Agent or Firm:
Mitsuru Nakao
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