APPARATUS FOR MONITORING NOx REMOVAL CATALYST OF DENITRIZER AND METHOD OF MONITORING NOx REMOVAL CATALYST

摘要

To provide an NO_x removal catalyst management unit for use with an NO_x removal apparatus, the management unit detecting an NO_x removal catalyst layer that is actually deteriorated, whereby the deteriorated catalyst layer can be effectively replaced by a new catalyst layer, and to provide a method for managing the NO_x removal catalyst.;The management unit for managing a plurality of NOx removal catalyst layers provided in a flue gas NOx removal apparatus includes NOx measurement means 16A through 16E for determining NOx concentrations on the inlet and outlet sides of respective NOx removal catalyst layers 14A through 14D; NH3 measurement means 17A through 17E for determining NH3 concentrations on the inlet and outlet sides of the same NOx removal catalyst layers; and percent NOx removal determination means 18 for determining percent NOx removal (η) on the basis of an inlet mole ratio (i.e., inlet NH3/inlet NOx).