Method for extracting mixed aromatics from lubricating base oil

A technology for lubricating base oil and mixed aromatic hydrocarbons, which is used in lubricating compositions, petroleum industry, refined hydrocarbon oil, etc., can solve the problems of complicated operation and low extraction efficiency, and achieves simple process, reduced separation time, and easy operation and control. Effect

Active Publication Date: 2016-04-06
茂名海和石油化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the laboratory often uses silica gel as the adsorption medium to separate mixed aromatics by vacuum elution. The operation is more complicated and the extraction efficiency is not high.

Method used

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  • Method for extracting mixed aromatics from lubricating base oil

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The method for extracting mixed aromatics from lubricating oil base oil comprises the following steps: selecting silica gel as a separation medium, filling silica gel into a glass cup with heating function, selecting furfural and mixing lubricating oil base oil in a ratio of 1:4 ; Then pour the mixture into a glass cup and let it stand to separate the lubricating oil base oil. The standing time: 10 minutes, the extraction temperature is maintained at 50°C, the mixed aromatics and the lubricating base oil are separated, and the mixed aromatics content is 4.9%.

Embodiment 2

[0016] The method for extracting mixed aromatics from lubricating oil base oil comprises the steps of: selecting silica gel as a separator

[0017] Isolate the medium, put silica gel into the inside of the glass with heating function, select furfural and lubricating oil base oil to mix at a ratio of 1:8; then pour the mixture into the glass and let it stand to separate the lubricating oil base oil for a period of time : 30min, the extraction temperature was maintained at 60°C, the mixed aromatics and the lubricating base oil were separated, and the mixed aromatics content was obtained by extraction at 5.0%.

Embodiment 3

[0019] The method for extracting mixed aromatics from lubricating oil base oil comprises the following steps: selecting silica gel as a separation medium, filling silica gel into a glass cup with heating function, selecting furfural and mixing lubricating oil base oil in a ratio of 1:10 ; Then pour the mixture into a glass cup and let it stand to separate the lubricating oil base oil. The standing time: 50min, the extraction temperature is maintained at 70°C, the mixed aromatics and the lubricating base oil are separated, and the mixed aromatics content is 5.1%.

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Abstract

The invention discloses a method for extracting mixed aromatic hydrocarbons from lubricating oil base-oil. The method comprises the following steps of 1, putting silica gel as a separation medium into a glass cup having a heating function, and mixing furfural and lubricating oil base-oil according to a ratio of 1: 4-10, 2, pouring the mixed solution into the glass cup, and carrying out standing at an extraction temperature of 50-70 DEG C for 10-50min to separate the lubricating oil base-oil so that layering of the mixed aromatic hydrocarbons and the lubricating oil base-oil is realized and the mixed aromatic hydrocarbons are obtained by extraction. The filtration glass cup has a heating function so that lubricating oil viscosity is reduced, separation time is reduced, an extraction solvent use amount is reduced in high-viscosity lubricating oil base-oil raw material refining and a refining degree is improved. The method has simple processes, can be operated and controlled easily and has a product total extraction rate above 90%.

Description

technical field [0001] The invention relates to a method for extracting mixed aromatics from lubricating oil base oil. Background technique [0002] Lubricating oil is a liquid lubricant used in various types of automobiles and mechanical equipment to reduce friction and protect machinery and processed parts. It mainly plays the roles of lubrication, cooling, rust prevention, cleaning, sealing and buffering. Lubricating oil is obtained by adding additives to lubricating base oil. The lubricating base oil contains mixed aromatics and other impurities. Mixed aromatics are toxic, volatile, and the price of mixed aromatics is high. Therefore, it is necessary to extract mixed aromatics from lubricating base oil during the processing of lubricating oil. At present, laboratories often use silica gel as the adsorption medium to separate mixed aromatics through decompression elution, which is complicated in operation and low in extraction efficiency. Contents of the invention [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G25/00C10M177/00
Inventor 姜瑞雨许宁侯贵华徐健
Owner 茂名海和石油化工有限公司
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