Reactor and process for mercaptan oxidation and separation...

Mineral oils: processes and products – Refining – Sulfur removal

Reexamination Certificate

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C208S203000, C208S207000, C210S513000, C210S538000, C210S532100, C422S256000

Reexamination Certificate

active

10690353

ABSTRACT:
The present invention is an apparatus and process for oxidizing mercaptans in a preferably kerosene stream. By using a catalyst promoter, sufficient separation of hydrocarbon and aqueous alkali occurs in the reactor vessel to obviate the need for a settling tank. Hence, the sweetened kerosene can be withdrawn from the reactor vessel and sent directly to a residual alkali removal unit such as a sand filter vessel or to a water wash vessel if jet grade fuel is desired. In an embodiment, the reactor vessel used for this purpose includes a reaction section and a separation section in the same reactor vessel and an aqueous alkali outlet and a sweetened hydrocarbon outlet in the separation section.

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patent: 5961819 (1999-10-01), Lee et al.
Kirk-Othmer, Encyclopedia of Chemical Technology (3d ed. 1981) vol. 15, 749-53.
Handbook of Petroleum Refining Processes, 11.31-.33 (Robert A. Meyers 2d ed. 1996).
Hydrocarbon Processing, Apr. 1982, p. 124.

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