Lubricating oil production residue recovery method

A recovery method and technology for lubricating oil, applied in the direction of petroleum wax recovery, etc., can solve the problems of low wax purity, poor deoiling effect, inconvenient utilization, etc., and achieve the effect of improving the oil-supporting effect, improving the de-oiling efficiency and convenient storage.

Pending Publication Date: 2019-04-19
SHANDONG YUANGEN PETROLEUM CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Lubricant base oil is refined from crude oil through atmospheric and vacuum distillation, solvent deasphalting, solvent refining, solvent dewaxing, clay or hydrogenation supplementary refining. The steps of solvent dewaxing process mainly include crystallization, filtration, solvent recovery and freezing The four parts are used to separate the paraffin in the oil. The paraffin can be used as a component and packaging material of food and other commodities, as a coating material for baking containers, and as a raw material for cosmetics. It can be used for fruit preservation and to improve the anti-aging properties of rubber. It is a widely used substance in terms of increasing flexibility, insulation of electrical components, precision casting, etc., but due to the low purity of the wax paste separated from lubricating oil, it is not convenient to use directly, and its storage is stable Poor performance, which is not conducive to storage, transportation and use. The existing paraffin wax refining process generally adopts spray deoiling process to remove the oil in the paraffin wax, but the deoiling effect of the existing method is poor, and the purity of the obtained wax is low

Method used

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  • Lubricating oil production residue recovery method
  • Lubricating oil production residue recovery method

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Heat the separated wax paste to 60°C to fully melt, and add a lubricating oil solvent composed of 40% toluene, 20% acetone and 40% methyl ethyl ketone to it, mix well, and mix the material evenly Cool down to 30°C to precipitate the wax, and filter to separate the precipitated paraffin crystals, heat and evaporate the filtered solution to recover the solvent, heat the separated paraffin crystals to 60°C to melt again and pass through at high temperature The high-pressure nozzle is sprayed into the spray tower, and the pressure in the spray tower is adjusted to 62-68kPa, so that the paraffin droplets are solidified into fine particles, and the lubricating oil solvent is sprayed in the opposite direction to the paraffin particles, so that the lubricating oil solvent and the paraffin particles are fully contacted and carried The oil in the paraffin particles is exported, the solvent carrying the oil is heated and evaporated to recover the solvent, and the paraffin particles...

Embodiment 2

[0023] Heat the separated wax paste to 60°C to fully melt, and add a lubricating oil solvent composed of 40% toluene, 25% acetone and 35% methyl ethyl ketone to it, mix well, and mix the material evenly Cool down to 30°C to precipitate the wax, and filter to separate the precipitated paraffin crystals, heat and evaporate the filtered solution to recover the solvent, heat the separated paraffin crystals to 60°C to melt again and pass through at high temperature The high-pressure nozzle is sprayed into the spray tower, and the pressure in the spray tower is adjusted to 62-68kPa, so that the paraffin droplets are solidified into fine particles, and the lubricating oil solvent is sprayed in the opposite direction to the paraffin particles, so that the lubricating oil solvent and the paraffin particles are fully contacted and carried The oil in the paraffin particles is exported, the solvent carrying the oil is heated and evaporated to recover the solvent, and the paraffin particles...

Embodiment 3

[0025] Heat the separated wax paste to 60°C to fully melt, and add a lubricating oil solvent composed of 40% toluene, 30% acetone and 30% methyl ethyl ketone to it, mix well, and mix the material evenly Cool down to 30°C to precipitate the wax, and filter to separate the precipitated paraffin crystals, heat and evaporate the filtered solution to recover the solvent, heat the separated paraffin crystals to 60°C to melt again and pass through at high temperature The high-pressure nozzle is sprayed into the spray tower, and the pressure in the spray tower is adjusted to 62-68kPa, so that the paraffin droplets are solidified into fine particles, and the lubricating oil solvent is sprayed in the opposite direction to the paraffin particles, so that the lubricating oil solvent and the paraffin particles are fully contacted and carried The oil in the paraffin particles is exported, the solvent carrying the oil is heated and evaporated to recover the solvent, and the paraffin particles...

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Abstract

The invention relates to the technical field of residue recovery, and especially relates to a lubricating oil production residue recovery method. The method can improve the purity of separated cerate,improve the storage stability, facilitate storage, transportation and use and improve the deoiling effect. The method includes the following steps: (1) heating, and dilution; (2) cooling crystallization: cooling of a uniformly mixed material to 30 DEG C to precipitate wax, and filtration for separating precipitated paraffin crystals; (3) solvent recovery; (4) atomization treatment: heating of theseparated paraffin crystals to 60 DEG C for remelting, spraying of the melted crystals into a spray tower through a high pressure nozzle at a high temperature, and adjustment of the pressure in the spray tower to 62-68 kPa to solidify paraffin drops into fine particles; (5) reverse absorption: spraying of a lubricating oil solvent in a direction opposite to the spraying direction of the paraffinparticles to make the lubricating oil solvent in full contact with the paraffin particles, and output of oil carrying the paraffin particles; (6) solvent recovery; and (7) melting, and molding.

Description

technical field [0001] The invention relates to the technical field of residual material recovery, in particular to a method for recovering residual material from lubricating oil production. Background technique [0002] As we all know, lubricating oil is a liquid or semi-solid lubricant used in various types of automobiles and mechanical equipment to reduce friction and protect machinery and processed parts. It mainly plays the role of lubrication, auxiliary cooling, rust prevention, cleaning, sealing and buffering. It is between two relatively moving objects and has the function of reducing the friction between the two objects due to release. [0003] Lubricant base oil is refined from crude oil through atmospheric and vacuum distillation, solvent deasphalting, solvent refining, solvent dewaxing, clay or hydrogenation supplementary refining. The steps of solvent dewaxing process mainly include crystallization, filtration, solvent recovery and freezing The four parts are u...

Claims

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Application Information

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IPC IPC(8): C10G73/36
CPCC10G73/36
Inventor 袁俊洲乔良宋来功何茂伟赵金伟师艳秋
Owner SHANDONG YUANGEN PETROLEUM CHEM
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