METHOD OF REDUCING ACIDITY OF HYDROCARBONS Russian patent published in 2014 - IPC C10G29/00 C10G21/24 C07C7/10 

FIELD: chemistry.

SUBSTANCE: invention relates to method of reducing acidity of hydrocarbon raw material, which includes: (a) contact of hydrocarbon raw material, which contains organic acid, with phosphonium ionic liquid, non-mixable with hydrocarbon raw material, including tetrabutyl phosphonium methane sulfonate, with obtaining mixture, which contains hydrocarbon and said liquid; (b) separation of mixture with obtaining effluent, which contains hydrocarbon, and effluent, which contains phosphonium ionic liquid, containing organic acid. In addition, method includes contact of effluent, which contains ionic liquid, with regenerating solvent and separation of effluent, containing ionic liquid, from regenerating solvent with obtaining flow of extract, which contains organic acid, and flow of regenerated ionic liquid, which contains phosphonium ionic liquid, non-mixable with raw material, where regenerating solvent contains water, and flow of regenerated ionic liquid additionally contains water and where effluent, which contains hydrocarbon, contains phosphonium ionic liquid, non-mixable with raw material, additionally including washing of, at least, part of effluent, which contains hydrocarbon, with water with obtaining effluent, containing washed hydrocarbon, and flow of waste water, and flow of waste water contains phosphonium ionic liquid, non-mixable with raw material; with, at least, part of flow of waste water being, at least, part of regenerating solvent.

EFFECT: claimed method can ensure removal of up to eighty percent of organic acids from hydrocarbon.

10 cl, 2 dwg, 5 ex, 1 tbl