首页|Analysis of the causes of the cracking of tube bundles of 316L stainless steel Shell-and-Tube heat exchanger
Analysis of the causes of the cracking of tube bundles of 316L stainless steel Shell-and-Tube heat exchanger
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NSTL
Elsevier
In an oil field, numerous tube bundles in the reboiler at the bottom of a regeneration tower cracked and leaked after only 2.8 years of service. Analysis was conducted on the material properties, failure characteristics, and corrosion products of the cracked 316L stainless steel tube bundles, and the causes of the cracking of the tube bundles of the heat exchanger were clarified. The results indicated that the failure of the tube bundles was caused by typical stress corrosion cracking (SCC), and the cracking originated from the pitting corrosion that occurred on the exterior surface of the tube bundles. The chemical composition, metallography, and mechanical properties of the failed tube bundles met standard requirements. The synergistic effect of chloride ions and oxygen in the solution was the main cause of the SCC of the heat exchanger tube bundles.
NSTL
Elsevier
