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I have question about S content in heavy i light FCC naphtha.
We have Texaco FCC unit and processed hydrotreating feed, in RF riser we processed heavy fcc naphtha. We tried to processed little amount of VBB, but we had problem with the S. In VBB we have 30% RSH and 0,8% H2S, other 70% we do not know which sort of S is. Our laboratory can not define which sort of S we have.
With processing VBB we normaly rise S content in heavy and light FCC naphtha.
Does anybody have advice how to reduce S content in FCC naphtha if we processed some amount of VBB?
 
Answers
27/05/2014 A: Sridhar Balakrishnan, Bharat Oman Refineries Limited , laksrid@yahoo.com
Type of sulphur species present in any hydrocarbons will be mercaptans , hydrogen sulphide , sulphides , disulphides , thiophenes and complex thiophenes. Mild hydrotreating can remove most type of sulphur species or blending with low sulphur streams .