Status and development tendency of deniration catalyst life management in thermal power plant

In order to lengthen service life of denitration catalyst in thermal power plant,the use and life management state of deniration catalyst was introduced combining with the whole catalyst use process. The cause of catalyst poisoning was analyzed. In order to maximize catalyst effects,the choose of catalyst should take full account of actual operating parameters which were provided by manufacturer. The ammonia could clog air preheater,so the spraying value of ammonia,operating temperature,soot blower system should be controlled strictly. The clogging,poisoning,physical deterioration and sintering were the main reasons of catalyst deactivation. The catalyst efficiency,ammonia escape and SO2/ SO3 conversion ratio could be used to check if the catalyst still had activity. There were some useful component in waste catalyst,so the waste catalyst recycling and regeneration technologies development should be strengthened.