Solvent extraction method for petroleum sludge/oil sand assisted by particle dispersant

Abstract

Provided is a solvent extraction method for a petroleum sludge/oil sand assisted by a particle dispersant, including: mixing a solution dissolved with the particle dispersant and the petroleum sludge/oil sand to obtain a mixture, and subjecting the mixture to solvent extraction and separation to obtain a solid phase particle and an oil-carrying liquid phase; wherein the particle dispersant includes one compound selected from the group consisting of a polyoxyethylene alkyl ether carboxylic acid, a polyoxypropylene polyoxyethylene alkyl ether carboxylic acid, and dodecylbenzene sulfonic acid; and a solvent used in the solution dissolved with the particle dispersant comprises one or more selected from the group consisting of cycloalkane and toluene.

Dependencies are inferred from the claim text.