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Discussion Forums - The Hendrix Group
HomeHomeDiscussionsDiscussionsOil Refinery Co...Oil Refinery Co...spent caustic corrosionspent caustic corrosion
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10/20/2006 9:00 AM
 
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hello severe corrosion occured on the top of spent caustic storage tank. top of tank was not contacted with spent caustic. we belive that corrosion can de due to releasing of disulfide oil gas in the tank. can anybody answer and how to prevent it? regards
 
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10/24/2006 9:00 AM
 
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We are using SS316L material for the Spent Caustic Tank and the plant is under construction. Your query does not specify the MOC - can you give details?
 
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11/13/2006 9:00 AM
 
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hello normaly SS316 is not suitable for the caustic streams. spent caustic contains mercaptan and disulfide. temparature is ambient.
 
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11/13/2006 9:00 AM
 
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Your corrosion diagnostic is correct. A way to prevent it is to paint the inner roof surface of the tank where gas condensation occurs. Contact your local paint advisers they will help you on the choice of the best painting system for your application. Hope it helps Good luck Luis Marques
 
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