Patent ID: 9068127
Filing Date: 2015-06-30
Classification: C10G

Abstract:
1. A process for removing nitrogen compounds and sulfur compounds from a vacuum gas oil comprising: (a) contacting the vacuum gas oil comprising the nitrogen and sulfur compounds, with a vacuum gas liquid-immiscible phosphonium ionic liquid to produce a mixture comprising the vacuum gas oil and the vacuum gas liquid-immiscible phosphonium ionic liquid to remove said nitrogen compounds; (b) then contacting said vacuum gas oil with a vacuum gas oil-immiscible phosphonium ionic liquid to produce a mixture comprising the vacuum gas oil and the vacuum gas liquid-immiscible phosphonium ionic liquid to remove said sulfur compounds; and (c) separating the mixture to produce a vacuum gas oil effluent and a vacuum gas oil-immiscible phosphonium ionic liquid effluent, the vacuum gas liquid-immiscible phosphonium ionic liquid effluent comprising the nitrogen and sulfur compounds wherein said vacuum gas oil is contacted with said vacuum gas liquid-immiscible phosphonium ionic liquid before said vacuum gas oil undergoes hydrotreating.