The Chugoku Electric Power Co., Inc.

Yousuke Oka

Hiroshi Shimada

Data on a secular change of each denitration catalyst is managed based on data obtained by a periodic maintenance and a daily management. Management of a secular change and prediction on performance variations that occur until a next periodic check is performed. It is determined whether the denitration catalyst is deteriorated such that an exhaust-gas denitration system cannot maintain its performance. When the denitration catalyst is deteriorated, regeneration, replacement, or addition of the denitration catalyst is performed, and the denitration catalyst is altered as necessary. When the denitration catalyst is usable, the denitration catalyst is not replaced nor regenerated.

Method and apparatus for managing denitration catalyst

To provide a method for recovering performance of a discharge gas processing apparatus, the method being capable of recovering NOremoval performance of a deteriorated NOremoval catalyst without replacing the deteriorated NOremoval catalyst with a new catalyst and without adding a new catalyst. After a honeycomb catalysthaving gas conduits for feeding a gas to be treated has been placed and used in a discharge gas conduit of a discharge gas processing apparatus, the honeycomb catalystis rearranged such that a portion of the honeycomb catalyst&#x2014;the portion being on the upstream side in terms of the flow of the gas to be treated and extending to cover a predetermined range is transferred from the inlet side of the discharge gas conduit.

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Hiroshima, Japan

Yousuke Oka