In view of the problems of increasing ammonia escape and blocking of air preheater caused by excessive ammonia injection in coal-fired power plants to meet the requirements of nitrogen oxide emission reduction of environmental protection departments

This paper introduces the unit and equipment

analyzes the existing problems of the denitration system

and puts forward the transformation measures for the denitration system

such as flow field transformation

denitration control optimization and accurate ammonia control in SCR outlet zone.Through the test

it is confirmed that the transformation measures can effectively solve the existing problems of the current equipment and realize safe and efficient operation of the unit.