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Reply To: Copper corrosion strip in FCC gasoline

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#31888

priocl1
Participant

thank you for such a clear reply.
I have following doubts regarding copper corrosion.
1. My copper corrosion is getting failed but lead acetate is coming negative means the filter paper is not turning black, its slightly yellowish. So what may be the reason for failure.
2. What is the impact of high caustic recirculation when there is no caustic carry over which is evident from Phenophthelin test.
3. What should be the optimum flowrate of caustic and Back pressure of caustic wash vessel.
4. How to check the presence of mercaptans and polysulfides in LPG?

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