Reasons and countermeasures for the increase in pressure difference of SCR denitrification reactor in a cement plant
In response to the problems of increased pressure difference in the reactor and reduced gas consumption of the rake type soot blower during the operation of the SCR denitrification device in a cement plant,the main reasons for catalyst layer blockage were ana-lyzed to be the failure of the rake type soot blower and the blockage of the rake rod;At the same time,the possible factors causing block-age in the rake type soot blower were analyzed item by item from the aspects of soot blower design,operation,and soot blowing medium.After cleaning the catalyst and soot blower,the pressure difference of the reactor was significantly reduced,and the denitrification effi-ciency was restored to over 80％.At the same time,by setting a positive pressure anti blocking pipeline on the soot blower lifting valve,it can prevent fly ash from invading the soot blower hole and blocking the soot blower,and put forward optimization suggestions for oper-ation.
SCRcatalystsrake type soot blowerblockageash accumulation
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