Method and apparatus for converting and removing...

Mineral oils: processes and products – Oxidation of mineral oils – With cracking

Reexamination Certificate

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C208S096000, C208S196000, C208S20800M, C208S219000, C208S240000, C208S265000

Reexamination Certificate

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07820031

ABSTRACT:
The present disclosure is directed to a multi-stage system and a process utilizing said system with the design of reducing the sulfur-content in a liquid comprising hydrocarbons and organosulfur compounds. The process comprising at least one of the following states: (1) an oxidation stage; (2) an extraction state; (3) a raffinate washing stage; (4) a raffinate polishing stage; (5) a solvent recovery stage; (6) a solvent purification stage; and (7) a hydrocarbon recovery stage. The process for removing sulfur-containing hydrocarbons from gas oil, which comprises oxidizing gas oil comprising hydrocarbons and organosulfur compounds to obtain a product gas oil.

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patent: 7276152 (2007-10-01), Lin et al.
patent: 2002/0035306 (2002-03-01), Gore et al.
patent: 2006/0211906 (2006-09-01), Berezutskiy

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