2results about "Refining with two or more solvents" patented technology

Provided are: an extractant with which one or more substances selected from among solutes and dispersed substances contained in lubricating oil compositions can be easily extracted; and an extraction method in which the extractant is used.　Specifically, the extractant comprises a deep eutectic solvent which is a product of mixing one or more nonionic hydrogen-bond donors with one or more nonionic hydrogen-bond acceptors. In the extraction method, the extractant is used.

A process and system to deasphalt used motor oil distillate residue including VTAE the process including feeding the used motor oil distillate residue and a supercritical solvent to an asphaltene separator that outputs an overhead having deasphalted oil and a bottoms that includes pitch.