| 摘要 |
Method of treating a first stream having mercaptan or mercaptan-based compounds therein by contacting said first stream with a second stream, wherein said mercaptan or mercaptan-based compounds are either extracted, catalytically oxidized to disulfide compounds, or both, wherein said first stream is either a sour hydrocarbon distillate or a spent caustic solution; provided if said first stream is a sour hydrocarbon distillate and second stream is a caustic solution, and if said first stream is a spent caustic solution said second stream is a hydrocarbon distillate, characterized by contacting said first and second streams in the presence of from about 1 ppm to about 50 ppm by weight, based upon the hydrocarbon stream of a nitrogen-based promoter comprising a non-electrolytic, substantially sulfur free organic compound having at least one nitrogen atom, said nitrogen-based promoter being selected from the group consisting of: heterocyclic compounds, wherein the ring or rings of said heterocyclic compounds consist of carbon and nitrogen atoms; substituted homocyclic compounds, wherein at least one substituent attached to the ring or rings of said homocyclic compounds comprises at least one nitrogen atom; aliphatic compounds comprising at least one nitrogen atom; and mixtures thereof. |
