Effect and Analysis of Coal Combustion Coupled Sludge Blending on SCR Denitration Performance
The composition of flue gas at the inlet of SCR denitration unit was tested and analyzed after sludge blending with different proportions was burned,and the degradation trend of catalyst performance before and after sludge blending was tracked and detected.The results show that:With the increase of sludge blending ratio,NOx concentration at SCR denitration inlet increases,flue gas flow increases,flue gas temperature decreases,flue gas water content increases,and fly ash concentration increases;The degradation rate of SCR denitration catalyst under the proportion of 2.1％sludge mixed combustion is not significant-ly abnormal compared with that without mixed combustion;When the sludge is mixed in high proportion,the ammonia consumption and ammonia escape of the denitration device will increase significantly.The influence of the change of flue gas composition at the SCR inlet on the overall performance of the denitration device should be fully considered,the catalyst selection should be optimized,and the performance margin should be improved.This research can provide reference for the operation and management of SCR denitration equip-ment of sludge blending unit.
coal fired power plantssludgeSCR denitrationcatalyst
万方数据
维普
