Patent ID: 9169445
Filing Date: 2015-10-27
Classification: C10G

Abstract:
1. A process to recover oil from oily solids, the process comprising: providing oily solids containing particulates from a mercury removal filtration unit, the oily solids containing an initial amount of mercury with an initial concentration of mercury; mixing the oily solids with at least a sulfidic compound in an aqueous solution forming a mixture, wherein the sulfidic compound is present in a molar ratio of sulfur compound to mercury of at least 10:1, and wherein the sulfidic compound dissolves in water and yields S separating the mixture to recover a first phase containing treated oil in water having less than 50% of the initial amount of mercury and a second phase containing treated solids having a second amount of mercury which is less than the initial amount of mercury; and wherein the oily solids containing particulates comprise filter aid materials.