Corrosion by chloride ions
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This post was last edited by mingyao1987 on 2009-9-9 08:16. It was recently discovered that the coil inside the synthesis reactor, which uses chilled brine, is damaged; it has been in use for less than a year. Carbon steel pipes are to be used in place of the original 316 pipes. Is carbon steel more resistant to chloride corrosion than 316? Why do carbon steel pipes exposed to saltwater work fine, while 316 doesn’t? It is suspected that the slightly higher temperature inside the synthesis reactor is causing the temperature to remain around 50 degrees; is this a significant issue? Is it effective to use carbon steel coils in a synthesis reactor environment, compared to 316 steel ones? The materials inside the synthesis reactor cause little corrosion to carbon steel; the presence of Fe ions may lead to complexation reactions
What is a synthesis reactor used for, and are the materials acidic or alkaline in nature? Also: There are more detailed discussions on the corrosion of stainless steel by chloride ions in the forum! http://bbs.hcbbs.com/thread-315242-1-1.html
If the material in your reactor is not sensitive to Fe ions, it is recommended to use carbon steel or 316L; the latter is more expensive