Title:
SYSTEM AND METHOD OF RECOVERING SELENIUM IN EXHAUST GAS
Document Type and Number:
Japanese Patent JP2014172796
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To efficiently perform separation treatment of selenium from exhaust gas containing a sulfur compound, and to continuously perform recovery treatment of the separated selenium.SOLUTION: Exhaust gas is introduced to a cooling part 1, and cleaned and exhausted through a primary neutralization treatment part 2, thereby producing primary drainage. The primary drainage led out from the primary neutralization treatment part 2 is introduced to a secondary neutralization treatment part 4 through an oxidation treatment part 3, thereby producing secondary drainage. The secondary drainage led out from the secondary neutralization treatment part 4 is introduced to a filtration treatment part 5 and is subject to liquid-solid separation treatment. A solid component led out from the filtration treatment part 5 is taken out as sludge containing selenium.
Inventors:
YAMAMOTO HASHIRA
TAKENAGA DAISUKE
YAMAKAWA KOJI
TAKENAGA DAISUKE
YAMAKAWA KOJI
Application Number:
JP2013048127A
Publication Date:
September 22, 2014
Filing Date:
March 11, 2013
Export Citation:
Assignee:
NIHON YAMAMURA GLASS CO LTD
International Classes:
C01B19/02; B01D1/00; B01D9/02; B01D39/06; B01D39/20; B01D53/14; B01D53/46; B01D53/50; B01D53/56; B01D53/68; B01D53/77; C02F1/00; C02F1/04; C02F1/72; C02F1/74; C02F9/00
Domestic Patent References:
| JPS4866015A | 1973-09-11 | |||
| JPH0957059A | 1997-03-04 | |||
| JP2001104748A | 2001-04-17 | |||
| JPS57179004A | 1982-11-04 | |||
| JPS6230826A | 1987-02-09 | |||
| JPH1170317A | 1999-03-16 |
Attorney, Agent or Firm:
Patent business corporation ユニアス international patent firm