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Title:
METHOD FOR TREATING USED NOx REMOVAL CATALYST
Document Type and Number:
Japanese Patent JP2002143648
Kind Code:
A
Abstract:

To effectively utilize the residual NOx removing performance of a used NOx removal catalyst.

The used NOx removal catalyst 2 used in an NOx removal equipment 1 and discharged is washed in a washing tank 3 and pulverized with a pulverizer 4. The pulverized NOx removal catalyst 2a is blown into waste gas 6 discharged from a melting furnace 5 in a temperature range in which the catalyst is active. The pulverized NOx removal catalyst 2a blown into the waste gas 6 and reutilized is collected in a dust collector 7, sent to the melting furnace 5 and melted to form slag 11. Since the used NOx removal catalyst 2 is pulverized, catalyst parts having NOx removing performance are exposed to the surface and NOx in the waste gas 6 is decomposed by this catalyst surface.


Inventors:
FUKADA YOSHINOBU
MORI TAKASHI
YAJIMA SHIRO
Application Number:
JP2000348217A
Publication Date:
May 21, 2002
Filing Date:
November 15, 2000
Export Citation:
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Assignee:
ISHIKAWAJIMA HARIMA HEAVY IND
International Classes:
B01D53/94; B01D53/96; B01J23/92; B01J38/00; B09B3/00; (IPC1-7): B01D53/94; B01D53/96; B01J23/92; B01J38/00; B09B3/00
Attorney, Agent or Firm:
Mitsuo Sakamoto