Experiment and Analysis on Flue Gas Low Temperature Corrosion Monitoring

Xiaona Song, Changshun Zhang, Pei Li, Jun Zheng, Yanping Hu, Xiaoxia Hou, Gang Xu

2School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing, China 3Key Laboratory of Low-grade Energy Utilization Technologies and Systems of Ministry of Education of China, Chongqing University, Chongqing, China.
Electrical and Mechanical practice center, Beijing Information Science & Technology University, Beijing, China.
School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing, China.

DOI: 10.4236/epe.2013.54B262                

Abstract

Thermal loss of exhaust flue gas accounts for the largest proportion of the total boiler thermal loss. Nowadays in China, the exhaust gas temperature in many thermal power plants is much higher than the designed value, thus, the recycle and reuse of the waste heat of tail flue gas is necessary. However, lower exhaust gas temperature will aggravate low temperature corrosion of the tail heating surface, which also causes huge economic losses. In order to solve this problem, this paper designs a monitoring experiment platform of flue gas low temperature corrosion, which can measure the corrosion condition of different materials by different flue gas compositions and temperature corrosion speeds. Besides, effects of low temperature corrosion factors are analyzed to find the best exhaust gas temperature and the surface material of tail heating surface.

Keywords

Experimental Platform; Acid Dew Point; Low-temperature Corrosion; Waste Heat Recovery

Conflicts of Interest

The authors declare no conflicts of interest.

References

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