FCC Naphtha Sweetening

Mercaptans (RSH) are naturally present in crude oils but are also generated from other sulfur compounds during crude fractionation and cracking processes. Mercaptans are undesirable because of their obnoxious odor and their tendency to hydrolyze, forming toxic and corrosive hydrogen sulfide. The classic tests for mercaptan presence are the “doctor” test and copper corrosion strip test.
The Sweetn'G® process eliminates mainly mercaptans by extraction or by their conversion into less aggressive compounds, protecting downstream equipment or units such as hydrotreaters as well as meeting fuel specifications.

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