Abstract:

In recent years, flue gas recirculation technology has been widely applied in waste to energy plants, which can effectively reduce NO_x emissions. However, the corrosion of flue gas recirculation equipment has affected the effect and stability of the technology application, so it is urgently needed to explore the causes of corrosion and countermeasures. Based on the study of flue gas recirculation system of a waste to energy incineration plant in Guangdong Province, this paper analyzes the causes of equipment corrosion from the perspectives of equipment selection, process layout, and operation specifications. Countermeasures were proposed in the directions of design and operation regulation, In design, equipment leakage should be reduced and protective wind and drainage pipes should be set to reduce corrosion. In operation regulation, strict compliance with the design operating conditions should be ensured for long-term operation. 

Key words: waste to energy incineration')">

waste to energy incineration, flue gas recirculation, corrosion problems,  , optimization scheme