Contaminant removal from hydrocarbon streams with lewis acidic ionic liquids
AssigneeUop LLC
InventorsErin M. Broderick, Alakananda Bhattacharyya, Shurong Yang, Beckay J. Mezza
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Abstract
Processes for removing sulfur and nitrogen contaminants from hydrocarbon streams are described. The processes include contacting the hydrocarbon stream comprising the contaminant with lean halometallate ionic liquid an organohalide resulting in a mixture comprising the hydrocarbon and rich halometallate ionic liquid comprising the contaminant. The mixture is separated to produce a hydrocarbon effluent and a rich halometallate ionic liquid effluent comprising the rich halometallate ionic liquid comprising the contaminant.
Claims18
A process for removing a contaminant comprising at least one of sulfur and nitrogen from a hydrocarbon stream comprising:
- contacting the hydrocarbon stream comprising the contaminant with a lean hydrocarbon-immiscible halometallate ionic liquid and an organohalide or HCl resulting in a mixture comprising the hydrocarbon and a rich hydrocarbon-immiscible halometallate ionic liquid comprising the contaminant wherein the hydrocarbon-immiscible halometallate ionic liquid comprises a haloaluminate ionic liquid, a haloferrate ionic liquid, a halocuprate ionic liquid, a halozincate ionic liquid, or combinations thereof and wherein the aloaluminate in said haloaluminate ionic liquid is selected from the group consisting of Al2Cl7−, Al3Cl10−, Al2Cl6Br, Al3Cl9Br, Al2Br7−, and Al3Br10;
- and
- separating the mixture to produce a hydrocarbon effluent and a rich hydrocarbon-immiscible halometallate ionic liquid effluent comprising the rich hydrocarbon-immiscible halometallate ionic liquid comprising the contaminant.
A process for removing a contaminant comprising at least one of sulfur and nitrogen from a hydrocarbon stream comprising:
- contacting the hydrocarbon stream comprising the contaminant with a lean hydrocarbon-immiscible halometallate ionic liquid and an organohalide or HCl resulting in a mixture comprising the hydrocarbon and a rich hydrocarbon-immiscible halometallate ionic liquid comprising the contaminant, wherein the hydrocarbon-immiscible halometallate ionic liquid comprises an imidazolium ionic liquid, an ammonium ionic liquid, a pyridinium ionic liquid, a phosphonium ionic liquid, a pyrrolidinium ionic liquid, a lactamium ionic liquid, or combinations thereof, and wherein the organohalide comprises an alkyl halide, an isoalkyl halide, a cycloalkyl halide, or combinations thereof;
- and
- separating the mixture to produce a hydrocarbon effluent and a rich hydrocarbon-immiscible halometallate ionic liquid effluent comprising the rich hydrocarbon-immiscible halometallate ionic liquid comprising the contaminant;
- wherein the hydrocarbon-immiscible halometallate ionic liquid comprises a haloaluminate ionic liquid, a haloferrate ionic liquid, a halocuprate ionic liquid, a halozincate ionic liquid, or combinations thereof and wherein the aloaluminate in said haloaluminate ionic liquid is selected from the group consisting of Al2Cl7−, Al3Cl10−, Al2Cl6Br, Al3Cl9Br, Al2Br7−, and Al3Br10.
Dependencies are inferred from the claim text.