| 摘要 |
Data on variation with time of each unit of denitration catalyst (101) is managed according to the data collected by periodical maintenance management (step S110) and daily management (step S120), and management of variation with time and prediction of performance change till the next periodical inspection are performed (step S130). It is determined whether or not the deterioration of the denitration catalyst (101) reaches the level at which an exhaust gas denitrizer (100) cannot exhibits its performance (step S140). If the deterioration is judged to have reached the level (step S140: deterioration), the denitration catalyst (101) is regenerated or replaced, or a denitration catalyst is added (steps S150, 160, 170), or the shape of the catalyst is changed if necessary (step S180). If the denitration catalyst can be still used (step S140: usable), the denitration catalyst (101) is not replaced nor regenerated (step S190). |
