SO2 oxidation rate rise reduction method of denitration catalyst

摘要

PROBLEM TO BE SOLVED: To provide a method of suppressing an increase in SO₂ oxidation rate of a denitration catalyst by removing an inhibiting factor such as silica stuck on the denitration catalyst.;SOLUTION: When a silica (Si) component as an inhibitor that causes the SO₂ oxidation rate to increase accumulates on the catalyst surface in the denitration catalyst used for removing nitrogen oxide in a flue gas, the silica component accumulating on the catalyst surface is dissolved, thereby regenerating the catalyst. Accordingly, the inhibitor such as the silica component covering the surface of the denitration catalyst can be removed, thereby enabling to provide the catalyst free from the increase of the SO₂ oxidation rate of the regenerated denitration catalyst.;COPYRIGHT: (C)2013,JPO&INPIT