Environmental Sanitation Engineering ›› 2025, Vol. 33 ›› Issue (3): 97-101.doi: 10.19841/j.cnki.hjwsgc.2025.03.013

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Corrosion Causes and Optimization Scheme for Flue Gas Recirculation Equipment in Waste to Energy Incineration Plants

HU Honglei, LONG Jisheng, WU Yazhong   

  1. 1. Shanghai SUS Environment Co. Ltd.； 2. Zhuhai Xinhuan Environment Co. Ltd.
  • Online:2025-07-01 Published:2025-07-01

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Abstract: In recent years, flue gas recirculation technology has been widely applied in waste to energy plants, which could effectively reduce NOx 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. The flue gas recirculation system of a waste to energy incineration plant in Guangdong province was taken as the research object. The causes of equipment corrosion were analyzed from the perspectives of equipment selection, process layout, operation specifications and so on. 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 incineration, flue gas recirculation, equipment corrosion, optimization scheme

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