E3S Web Conf.
Volume 267, 20217th International Conference on Energy Science and Chemical Engineering (ICESCE 2021)
|Number of page(s)||5|
|Section||Environmental Chemistry Research and Chemical Preparation Process|
|Published online||04 June 2021|
Failure analysis for tube bundle of methanol condensation recovery heat exchanger
Shanghai Institute of Special Equipment Inspection & Technical Research, Putuo, Shanghai, China
The S30408 tube bundle of methanol condensation recovery heat exchanger in a chemical company was found leaked during use. The cause of tube bundle leakage was analyzed by means of macroscopic inspection, chemical composition analysis, metallographic analysis, hardness test and leakage fracture analysis. The results show that formic acid and chloride condensate are formed by the exhaust gas in the shell side near the outlet of the shell side, which results in the spot corrosion and stress corrosion cracking of the tubes. Surface coating or replaced material is recommended to prevent such failure.
© The Authors, published by EDP Sciences, 2021
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