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Method for regenerating waste oil

A technology of waste oil and sodium bentonite, which is applied in the petroleum industry, processing hydrocarbon oil, hydrocarbon oil treatment products, etc., can solve the problems of secondary pollution and incomplete regeneration, and can prevent the oxidation of waste oil, which is beneficial to adsorption purification and purification. Efficient effect

Inactive Publication Date: 2017-06-13
CHANGSHA HUIJU ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the prior art, the acid-clay process is adopted, using concentrated sulfuric acid to remove impurities such as organic matter, then using activated clay to remove pigment at a high temperature of 200-300°C, and then filtering to remove mechanical impurities. This method mainly has incomplete regeneration and is easy to produce Secondary pollution

Method used

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  • Method for regenerating waste oil

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Effect test

Embodiment 1

[0025] A method for regenerating waste engine oil, the steps are as follows:

[0026] 1) Take 150 g of sodium-based bentonite particles, and obtain a powder with a diameter of 200 mesh after crushing and screening;

[0027] 2) Take modifier cetyltrimethylammonium bromide, configure the modifier solution of solution 5g / L; Add the sodium bentonite powder of step 1) in the modifier solution, the modifier solution The pH is 7, shake on a water-bath shaker at 50°C for 4 hours, take it out and air-dry it naturally to obtain modified sodium-based bentonite powder for later use;

[0028] 3) 5L of waste engine oil was left to stand for 24 hours, and the water in the lower layer was removed to obtain the initially treated waste engine oil;

[0029] 4) Put the waste engine oil that has been preliminarily treated in step 3) in a vacuum agitator, the system pressure of the vacuum agitator is 25kpa, heat the waste engine oil to 110°C, stir the waste engine oil continuously under vacuum con...

Embodiment 2

[0031] A method for regenerating waste engine oil, the steps are as follows:

[0032] 1) Take 150 g of sodium-based bentonite particles, and obtain a powder with a diameter of 200 mesh after crushing and screening;

[0033] 2) Take modifier cetyltrimethylammonium bromide, configure the modifier solution of solution 5g / L; Add the sodium bentonite powder of step 1) in the modifier solution, the modifier solution The pH is 7, shake on a water-bath shaker at 50°C for 4 hours, take it out and air-dry it naturally to obtain modified sodium-based bentonite powder for later use;

[0034] 3) 2.5L of waste engine oil was left to stand for 24 hours, and the water in the lower layer was removed to obtain the initially treated waste engine oil;

[0035] 4) Put the waste engine oil that has been preliminarily treated in step 3) in a vacuum agitator, the system pressure of the vacuum agitator is 20kpa, heat the waste engine oil to 90°C, stir the waste engine oil continuously under vacuum co...

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Abstract

The invention provides a method for regenerating waste oil. The method comprises the steps of firstly taking sodium bentonite particles and carrying out crushing and sieving treatment to obtain powder of which the diameter is 200 meshes; weighing modifier cetyl trimethyl ammonium bromide to prepare 5g / L of modifier solution; adding sodium bentonite powder to the modifier solution to prepare the modified sodium bentonite powder; standing and removing water from the waste oil, putting the waste oil into a vacuum stirrer, heating and stirring the waste oil, adding the modified sodium bentonite powder, and stopping vacuum supply after cooling to room temperature and carrying out suction filtration treatment to obtain regenerated oil. According to the method, the implementation process is simple, the operation is easy, secondary pollution in the whole process is avoided, and the purifying efficiency is high.

Description

[0001] Technical field: [0002] The invention relates to the technical field of solid waste treatment, in particular to a method for regenerating waste engine oil. [0003] technical background: [0004] Waste engine oil refers to the waste lubricating oil replaced from various machinery, vehicles, and ships. Lubricating oil is widely used in automobiles, ships, various industrial equipment and transmission parts of various machinery, etc., with a wide range of applications. According to incomplete statistics, there are more than 80 million motor vehicles, more than 100,000 transport ships, and nearly 300,000 motorized fishing boats in my country. The engine oil that needs to be replaced every month for these three items alone amounts to more than 4 million tons. Most of them are recycled, and most of the replaced waste engine oil is dumped or incinerated on the spot, which not only wastes a lot of resources but also causes serious environmental pollution. [0005] my country...

Claims

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Application Information

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IPC IPC(8): C10G53/08
CPCC10G53/08C10G2300/1007C10G2400/10
Inventor 易师张柏林袁玉香
Owner CHANGSHA HUIJU ENVIRONMENTAL TECH CO LTD
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