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Title:
METHOD FOR CLEANING USED DENITRATION CATALYST
Document Type and Number:
WIPO Patent Application WO/2011/078084
Kind Code:
A1
Abstract:
Disclosed is a method for cleaning used denitration catalyst which prevents release of mercury into the atmosphere by recovering and removing mercury which would have been released into the atmosphere. The used denitration catalyst, which has been used in an exhaust gas containing mercury and which has titanium oxide as a main component, is immersed in a cleaning liquid, whereafter a catalyst poison containing the mercury in said denitration catalyst is dissolved and removed while stirring said cleaning liquid. The exhaust gas generated in the process of stirring the cleaning liquid is conducted into a flue having a mercury removal means, and is released into the atmosphere after the mercury has been removed.

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Inventors:
IKEMOTO Seiji (5-3 Takaramachi, Kure-sh, Hiroshima 29, 〒7370029, JP)
池本　清司 (〒29 広島県呉市宝町５番３号　バブコック日立株式会社　呉研究所内 Hiroshima, 〒7370029, JP)
KATO Yasuyoshi (5-3 Takaramachi, Kure-sh, Hiroshima 29, 〒7370029, JP)
Application Number:
JP2010/072784
Publication Date:
June 30, 2011
Filing Date:
December 17, 2010
Export Citation:
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Assignee:
BABCOCK-HITACHI KABUSHIKI KAISHA (14-1, Sotokanda 4-chome Chiyoda-k, Tokyo 21, 〒1010021, JP)
バブコック日立株式会社 (〒21 東京都千代田区外神田４丁目１４番１号 Tokyo, 〒1010021, JP)
IKEMOTO Seiji (5-3 Takaramachi, Kure-sh, Hiroshima 29, 〒7370029, JP)
池本　清司 (〒29 広島県呉市宝町５番３号　バブコック日立株式会社　呉研究所内 Hiroshima, 〒7370029, JP)
International Classes:
B01D53/94; B01D53/64; B01D53/96; B01J20/02; B01J20/06; B01J20/08; B01J20/14; B01J20/20; B01J23/92; B01J38/48; B01J38/62
Attorney, Agent or Firm:
KAWAKITA Takenaga (Taisei Building, 4-10 Nihonbashi-kayabacho 2-chom, Chuo-ku Tokyo 25, 〒1030025, JP)
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