Title:
HYDROGEN CHLORIDE GAS SCAVENGER AND ACIDIC WASTE GAS TREATMENT
Document Type and Number:
Japanese Patent JP3872604
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To immobilize hydrogen chloride gas in an acidic waste gas to be removed and, at the same time, to prevent dissolution of the immobilized chlorine ion.
SOLUTION: Hydrogen chloride gas is immobilized by brining an acidic waste gas into contact with a hydrogen chloride gas scavenger containing substances capable of supplying calcium oxide and silicon dioxide and having mole ratio of CaO/SiO2 within a range from 1.5 to 3.2 at 600-1,500°C. The reaction products, CaO-SiO2-CaCl2, 9CaO-6SiO2-CaCl2, and 2CaO-SiO2-CaCl2, are stable and even in the case of being brought into contact with water, calcium ion and chlorine ion are not eluted in water.
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Inventors:
Akihiko Shibuya
Tatsuo Murakami
Shigeru Aito
Tatsuo Murakami
Shigeru Aito
Application Number:
JP32267598A
Publication Date:
January 24, 2007
Filing Date:
November 12, 1998
Export Citation:
Assignee:
Ueda Lime Manufacturing Co., Ltd.
International Classes:
B01D53/34; B01D53/68; B01D53/14; B01D53/40; B01D53/81; B01J20/10; F23G5/00; F23J15/00; (IPC1-7): B01D53/34; B01D53/81; B01D53/14; B01D53/40; B01D53/68; B01J20/10; F23G5/00; F23J15/00
Domestic Patent References:
| JP58166933A | ||||
| JP10309436A | ||||
| JP6480425A | ||||
| JP11267455A |
Attorney, Agent or Firm:
Osamu Hayasaki