Device and method for recovery treatment of solid-containing oil or oil-containing solid phase through solvent extraction

Abstract

The invention provides a device and a method for recovery treatment of solid-containing oil or an oil-containing solid phase through solvent extraction. The device comprises an extraction centrifugalunit, a sedimentation unit, a flash distillation unit and a spray drying unit, wherein the extraction centrifugal unit is used for extracting the solid-containing oil or the oil-containing solid phaseto obtain a centrifugal clear liquid and a centrifugal residue; the sedimentation unit communicates with the extraction centrifugal unit and is used for removing solid particles in the obtained centrifugal clear liquid to obtain a top-part liquid and a bottom-part liquid; the flash distillation unit communicates with the sedimentation unit and is used for distilling the obtained top-part liquid to obtain oil or asphalt and a solvent, wherein the solvent is recycled after heat is recovered; and the spray drying unit communicates with the extraction centrifugal unit and is used for recovering the solvent from the obtained centrifugal residue to obtain the solvent and a solid powder material. The device and the method provided by the invention have the advantages of capability of fully recovering an oil product or the solvent, insusceptibility to causing solidification and clogging, and applicability to large-scale recovery and utilization of resources like oil residue and oily silt.

Description

technical field [0001] The invention relates to an extraction and recovery processing device and process for solid oil or oil-containing solid phase such as oil residue and oil sludge sand, and the main application fields include coal liquefaction oil residue, kerosene co-refining oil residue, heavy oil suspended bed or slurry bed hydrogenation oil residue , Oilfield mining sludge, refinery sludge, ship bilge sludge, natural oil sands or oil mines, etc. This technology is suitable for oil recovery and solid residue treatment of all solid-containing oils or oil-containing solid phases, such as oil residues, oil sludge, oil sands, and oil mines. The deoiled solid phase is treated to produce coal-like fuel, and the oil residue, oil sludge, oil sand, oil ore and other substances are fully utilized, exhausted and squeezed, so as to improve the utilization rate of resources in an all-round way, and improve the industrial chain of the chemical industry. Economic and environmental be...

AI Technical Summary

Problems solved by technology

[0004] (1) Oil residues and oil sludge sands and other resources cannot be extracted from the oil components, and they are burned as fuel together with the solid phase. The price of oil residues and oil sludge sands is equivalent to coal, and the waste is very serious

[0005] (2) The solid content of oil residue and oil sludge sand is high, easy to solidify, easy to block, easy to coke, and it is very difficult to handle.

[0006] (3) Incomplete recovery of oil products or solvents during the treatment of oil residues and oil sludge sands leads to no economic benefits, and the solid phase after treatment of oil residues and oil sludge sands cannot be processed downstream

[0007] (4) A large amount of waste water and waste solids will be generated after the treatment of oil residue and oil sludge sand, etc., resulting in new environmental protection problems

[0008] (5) Existing treatment technologies are not suitable for large-scale recycling of resources such as oil residue and oil sand

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