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Reply To: COS LPG Coker

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#21668

Hedewandro Lucredi
Participant

Thanks Even
Our propylene unit has a splitter and a final poliment reactor. We produce chemical grade propylene with purity above 99.5 % and the spec is less than 20 ppt of COS. In the final poliment reactor the design was made to treat less than 570 ppt. We have only amine (DEA) and regenerative caustic treatment for coker LPG. Our feedstock (crude oil) change a lot, but we do not observe any reduction in the COS coker LPG yet. What do we need to reduce the COS in the feedstock ? Is it not change the crude oil or even stop to inject offshore residue in the distillation unit ?

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