Abstract:Governmental environment protection regulations are more and more strict in recent years. Ultralow emission reconstruction became power plants’ key projects. To realize ultralow emission, a power plant implemented denitration overall working conditions improvement reconstruction. By staged economizer improvement, the incident of outage of SCR system while low load operation was improved. After improvement, boiler efficiency was maintained. Denitration efficiency was increased. Unit nitrogen emission achieve standard. Denitration overall working conditions operates was realized.

Keywords:denitration overall working conditions, ultralow emission, economizer staged improvement, SCR inlet temperature