| 摘要 |
A continuous process is disclosed for removing mercaptans from highly olefinic feed streams (1) by extraction with a regenerated aqueous alkaline solution (4). The aqueous extract solution is preferably regenerated (13) by oxidation of extracted mercaptans to disulfides. The invention employs an extraction step (6, 7, 8) performed on the aqueous extract solution (5) to limit the passage of olefins or acetylenes into the mercaptan conversion zone (13) and preferably an extraction step (20, 21, 22, 23) performed on the regenerated solution to limit the passage of mercaptans and/or oxygenates into the primary extraction zone (2). |
