Process for mercaptan extraction from olefinic hydrocarbons

Details Process for mercaptan extraction from olefinic hydrocarbons Process for mercaptan extraction from olefinic hydrocarbons

1985-12-23

1986-12-02

Metz, Andrew H.

Mineral oils: processes and products

Refining

Sulfur removal

208189, 208231, C10G 1902, C10G 1908

Patent

active

046263411

ABSTRACT:
A process is disclosed for removing mercaptans from highly olefinic feed streams by extraction with an aqueous alkaline solution. The aqueous solution is preferably regenerated by oxidation of extracted mercaptans to disulfides. The invention employs two extraction steps performed on the aqueous solution to limit the passage of olefins or acetylenes into the mercaptan conversion zone and to limit the passage of mercaptans and/or oxygenates into the primary extraction zone.

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Kirk-Othmer Encyclopedia of Chemical Technology, vol. 15, pp. 51-52, "Petroleum (Refinery Processes)".

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