FUEL & CHEMICAL PROCESSES ›› 2015, Vol. 46 ›› Issue (5): 25-27.

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Analysis of causes for corrosion of secondary superheater in CDQ boiler

Chao Wei1  Zhang Xiaopeng1  Guan Shaokui2  Cao Guijie2   

  1. 1.Shougang Research Institute of Technology,Beijing 100043,China;2.Qian’an Zhonghua Coal Chemical Co.,Ltd.,Tangshan 064404,China
  • Online:2015-09-17

Abstract:

This paper analyzes the broken tubes of secondary superheater by Scanning Electron Microscope (SEM) and Energy Dispersive X-Ray Spectroscopy (EDS) and found that the high temperature sulfur corrosion is the main reason for the tube damage and further tube burst.After corresponding improvement, there is no more tube burst accident.

CLC Number: