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Method for regenerating waste oil by extracting novel combination solvent

A solvent and a new type of technology, applied in the field of lubricating oil, can solve the problems of less capital, economic benefits, environmental friendliness and small scale of waste oil recycling plants, and achieve the effects of convenient operation, low price and high economic benefits

Inactive Publication Date: 2014-11-05
CHONGQING TECH & BUSINESS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above waste oil regeneration treatment technologies cannot well adapt to the national conditions of my country's waste oil regeneration plants with small scale, low capital and backward technology in terms of economic benefits and environmental friendliness.

Method used

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  • Method for regenerating waste oil by extracting novel combination solvent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Dry 50g of waste oil in a 60°C constant temperature drying oven for 24 hours to remove part of the water and separate large particles of impurities;

[0050] Pour the supernatant clear oil obtained after settling and drying into a 1000mL beaker after cooling, add 400g of a mixed solution of benzene and tetrahydrofuran (benzene: tetrahydrofuran = 1:4), place it on a constant temperature magnetic heating stirrer, turn on the heating switch and Switch on stirring, raise the temperature to 55°C, control the rotating speed at 1000r / min, and after extracting and refining at constant temperature for 3 hours, stop heating and stirring to obtain an oily mixture;

[0051] Transfer the obtained oil-containing mixture to a separatory funnel, put it into a constant temperature box, control the temperature at a constant 60°C, and settle for 24 hours;

[0052] Remove the supernatant from the oil-containing mixture after constant temperature settlement, and introduce it into a 1000 mL ...

Embodiment 2

[0055] Dry 50g of waste oil in a 60°C constant temperature drying oven for 24 hours to remove part of the water and separate large particles of impurities;

[0056] The supernatant clear oil obtained after settling and drying is poured into a 500mL beaker after cooling, and a mixed solution of 250g benzene, toluene, xylene and tetrahydrofuran is added (benzene: toluene: xylene: tetrahydrofuran mass ratio is 1:1:1:1 ), then put it on a constant temperature magnetic heating stirrer, turn on the heating switch and stirring switch, raise the temperature to 45°C, control the rotation speed at 1000r / min, and after constant temperature refining for 2 hours, stop heating and stirring to obtain an oily mixture;

[0057] Transfer the obtained oil-containing mixture to a separatory funnel, put it into a constant temperature box, control the temperature at a constant 40°C, and settle for 15 hours;

[0058] Remove the supernatant from the oil-containing mixture after constant temperature s...

Embodiment 3

[0061] Dry 50g of waste oil in a 60°C constant temperature drying oven for 24 hours to remove part of the water and separate large particles of impurities;

[0062] The supernatant clear oil obtained after settling and drying was cooled and poured into a 500mL beaker, and a mixed solution of 250g of toluene, tetrahydrofuran and 1,4-dioxane was added (toluene: tetrahydrofuran: 1,4-dioxane mass ratio 1:3:1), then put it on the constant temperature magnetic heating stirrer, turn on the heating switch and the stirring switch, raise the temperature to 45°C, control the rotation speed at 1000r / min, and after constant temperature refining for 2 hours, stop heating and stirring to obtain an oily mixture;

[0063] Transfer the obtained oil-containing mixture to a separatory funnel, put it into a constant temperature box, control the temperature at a constant 40°C, and settle for 15 hours;

[0064] Remove the supernatant from the oil-containing mixture after constant temperature settlem...

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Abstract

The invention provides a method for regenerating waste oil by extracting a novel combination solvent, which comprises the following steps: 1)taking waste oil and placing in a container, performing settlement in a thermotank, drying, taking a supernatant oil; 2)adding an organic solvent in the supernatant oil after filtering in the step 1), wherein the organic solvent is composed of a solvent a and a solvent b, a is one, two or three of benzene, toluene and xylene; b is one or two of tetrahydrofuran and 1,4-dioxane; and 3)extracting and refining to obtain an oil-containing mixture, sending to the thermotank for settlement, and taking the supernatant oil for distillation to obtain the reclaimed oil. In the invention, while extracting and refining, the solvent has good extracting effect to the waste oil. The experiment result displays that the regeneration method of the waste oil has the advantages of high yield and good reclaimed oil quality. In addition, the regeneration method comprises the characteristics of simple operation, mild technology condition, cycle use of the solvent, low cost and high economic benefit.

Description

technical field [0001] The invention relates to the technical field of lubricating oil, in particular to a method for regenerating waste oil. Background technique [0002] As an important energy source, petroleum plays a pivotal role in modern industry, transportation, military and other fields. my country has become the world's second largest oil consumer after the United States. From 2002 to 2012, my country's annual oil consumption increased from 248 million tons to 484 million tons, with an average annual growth rate of 6.93%. The annual crude oil import volume is only 208 million tons. In 2012, my country’s crude oil import volume was about 271 million tons, a year-on-year increase of 6.8%. [0003] Lubricating oil is a high value-added product extracted from petroleum, but its output only accounts for about 2% of the total petroleum products. It is mainly used to reduce the friction between the surfaces of moving parts, and at the same time it plays a role in cooling, ...

Claims

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Application Information

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IPC IPC(8): C10M175/00C10G53/04
Inventor 欧阳平杨小平张贤明陈凌刘先斌
Owner CHONGQING TECH & BUSINESS UNIV
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