Cause of Perforation on Boiler Water Wall Tube in an Own Power Plant

GUO Dan; PENG Zhanghua; ZHANG Weike; ZHAI Guangjie; HE Chengwen; JIANG Hua

doi:10.11973/lhjy-wl202103016

PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING > 2021 > 57(3): 73-77. > DOI: 10.11973/lhjy-wl202103016

GUO Dan, PENG Zhanghua, ZHANG Weike, ZHAI Guangjie, HE Chengwen, JIANG Hua. Cause of Perforation on Boiler Water Wall Tube in an Own Power Plant[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2021, 57(3): 73-77. DOI: 10.11973/lhjy-wl202103016

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Cause of Perforation on Boiler Water Wall Tube in an Own Power Plant

1. Xi'an Thermal Power Research Institute Co., Ltd., Xi'an 710032, China;
2. Inner Mongolia Lantai Industrial Co., Ltd., Wuhai 016000, China;
3. Shanxi Zhongdian Shentou Second Power Generation Co., Ltd., Shuozhou 036011, China

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Received Date: August 09, 2020

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Abstract

The boiler water wall tube in an industrial park's own power plant perforated for many times during operation. The causes of perforation on water wall tube were analyzed by means of inner wall scale analysis and metallographic examination, combined with the field conditions. The results show that the conductivity and SiO₂ content of water in boiler were high, and there was no on-line instrument monitoring in the field, which led to the alkali corrosion under the scale, resulted in the tube wall thinning to unable to bear the stress and the perforation and burst.
- water wall tube,
- burst,
- alkali corrosion under scale,
- water quality

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Cause of Perforation on Boiler Water Wall Tube in an Own Power Plant

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