Coil corrosion problem in reaction vessels
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The media in our company’s reaction vessels include chlorine, ethanol, and chloroethane. Hydrochloric acid, water, and organic alcohols are used in this reaction; the reaction temperature can reach over 100 degrees. The coiled tubes inside the reactor are currently made of HAC276 material, which suffers from severe corrosion. I would like to ask everyone what type of material I should use for the coiled tubes Does anyone have any good ways to solve this problem?
Is the corrosion severe? Hastelloy B3 has better corrosion resistance than 276
The corrosion is severe; for hydrolysis reactors, Hastelloy B3 is more expensive than Hastelloy C. Are there any other materials available?
Is the heat transfer efficiency good when tetrafluoroethylene is used as a coating? It must not affect the heat transfer efficiency
After chlorination, there is a heating and hydrolysis process; a large amount of chloride ions are released, along with water, ethanol, and chlorine gas
The last edit to this post was made by tie008 on 2018-1-1 at 18:43. If Hastelloy C276 is not resistant enough to corrosion, then in an acidic environment at 100°C, one could try using Ti Gr7 or Gr12 coupons. If that still doesn’t work, I think the only option left is to use sintered SiC ceramics~~~ Surely they won’t use Ta for this coil~~~~