Title:
METHOD FOR TREATING AQUEOUS SOLUTION OF HALOGEN COMPOUND, ACIDIC AQUEOUS SOLUTION, OR ACIDIC GAS, AND ITS APPARATUS
Document Type and Number:
Japanese Patent JP3672301
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide durable and efficient method and apparatus for detoxifying an aqueous solution of a halogen compound, an acidic aqueous solution, or acidic gas.
SOLUTION: An aqueous solution containing hydrogen chloride (HCl) in introduced into a dissolving tank 30 that stores massive matter or particulate matter consisting of calcium hydroxide (Ca(OH)2) or calcium carbonate (CaCO3) to change the aqueous solution containing hydrogen chloride (HCl) to an aqueous solution containing calcium chloride (CaCl2) in the dissolving tank 30. The aqueous solution of the halogen compound, the acidic aqueous solution, or the acidic gas is introduced into a sedimentation tank 20 into which the resultant aqueous solution containing calcium chloride (CaCl2) is fed to precipitate and take out the aqueous solution of the halogen compound, the acidic aqueous solution, or the acidic gas as a difficultly soluble calcium compound.
Inventors:
Gold
Wataru Minami
Wataru Minami
Application Number:
JP2003045428A
Publication Date:
July 20, 2005
Filing Date:
February 24, 2003
Export Citation:
Assignee:
Gold
International Classes:
B01D53/68; B01D53/50; B01D53/77; C01D3/02; C01F11/22; C01F11/46; C02F1/58; (IPC1-7): C02F1/58; B01D53/50; B01D53/68; B01D53/77; C01D3/02; C01F11/22; C01F11/46
Domestic Patent References:
| JP55015667A | ||||
| JP9086926A | ||||
| JP9225477A | ||||
| JP1157786A | ||||
| JP5146758A | ||||
| JP35315B2 |
Attorney, Agent or Firm:
Motomu Itou
Takahiko Kasuya
Takahiko Kasuya