Method of separation of hydrocarbon oils from a waxy feedstock and separation system for implementation of said method

A system for separating hydrocarbon oils and wax from a waxy feedstock mixture containing an oil-containing wax component and a solvent component, said system comprising at least one crystallization chamber in which said waxy feedstock is cooled and crystallization of wax crystal is induced, said chamber is formed as a column, defined by a tubular body portion closed by an upper and a lower cover, said tubular body portion is provided with an inlet for entering a cooling agent thereinto and an outlet for exit of the cooling agent, said upper cover is provided with an inlet for entering the feed stock mixture and said lower cover is provided with an outlet for exit thereof, wherein the interior of the body portion is divide into plurality of successive hollow compartments, each of said compartments is defined by two opposite lateral disk surfaces and by an annular peripheral surface, the successive compartments are connected by tubular connections so as to be in communication and to allow the flow of cooling agent therethrough, the annular peripheral surface of each compartment is formed with at least one concavity so as to enable communication between the successive regions and to allow the flow of feed stock therethrough;

• said column further including scraping means affixed to a rotatable vertical shaft for scraping said wax crystals formed on said disk surface.