Method for refining Solvent Oil raw material

摘要

Method for the extraction with Solvent a fraction of Petroleum oil containing aromatic and non Aromatic components.The raw material is in contact with a Solvent Selective Elements constituted Aromatic, usually N - methyl - 2 - pirolidona, to form a Refining stage that includes a small amount of solvent and extract a part of which includes a main part of the solvent.Removes a part of the Solvent in the extract Phase Separation with an Inert Gas, forming a mixture of solvent vapor and Gas separation.Before the extraction operation is in contact with the mixture of raw material and solvent vapor gas separator in a First Contact ZoneWith the Solvent vapours are absorbed from gas Separation at the same time, the raw material and the Water content in it is Vaporized to form a mixture of Inert Gas and water vapor that is separated from the raw material.