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Regeneration method of semisynthesis waste engine oil

A waste oil, semi-synthetic technology, applied in the direction of lubricating composition, can solve the problems of long regeneration cycle, low regeneration quality, difficult to remove oil oxides, etc., and achieve the effect of short regeneration cycle and high regeneration quality.

Inactive Publication Date: 2018-04-13
SUZHOU BOJIN BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing methods for regeneration of waste engine oil generally have the following problems: 1. The regeneration cycle is relatively long, and a long settling time is required in the flocculation process, and multiple flocculation processes are used in the regeneration process of waste engine oil, so that the regeneration cycle lengthen
2. The cost is high. In the regeneration process of waste engine oil, various kinds of raw materials are used and the amount is large, resulting in high cost for the regeneration process of waste engine oil.
3. The regeneration quality is not high, the viscosity of the regenerated engine oil is greatly reduced, and some oil oxides are difficult to remove, so it can only be used as a low-end engine oil after blending with new high-quality engine oil

Method used

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  • Regeneration method of semisynthesis waste engine oil
  • Regeneration method of semisynthesis waste engine oil
  • Regeneration method of semisynthesis waste engine oil

Examples

Experimental program
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Effect test

Embodiment 1

[0018] A method for regeneration of semi-synthetic waste engine oil, the steps of which are:

[0019] (1) Pretreatment

[0020] Put 100 parts of Shell semi-synthetic 5w-30 waste engine oil into a plastic container, add 3 parts of alum and 5 parts of polysilicate flocculant (PSAA), shake and stir for 50 minutes, let it stand for 3 hours, pour it into a centrifuge, 5000r / min Centrifuge for 5 minutes, collect the upper layer oil to obtain the first-stage upper layer clear oil; then add 20 parts of 3mol / L sulfuric acid solution to the first-stage upper layer clear oil, put it in a constant temperature box, set the temperature at 60°C, shake and stir for 20 minutes, and keep it warm After 12 hours, take it out and seal it, let it settle naturally at room temperature for 1 day, collect the upper layer oil to obtain the second-stage upper layer clear oil; add 0.2mol / L sodium hydroxide solution to the second-stage upper layer clear oil, wash the oil until neutral, add Wash with 30 pa...

Embodiment 2

[0028] A method for regenerating semi-synthetic waste engine oil, the steps of which are:

[0029] (1) Pretreatment

[0030] Take 100 parts of Shell fully synthetic 5w-30 waste engine oil into a plastic container, add 3 parts of alum and 3 parts of polysilicate flocculant (PSAA), shake and stir for 50 minutes, let stand for 2 hours, centrifuge at 4000r / min for 3 minutes, and collect the upper layer The oil was obtained from the first-stage upper layer clear oil; then 20 parts of 3mol / L sulfuric acid solution was added to the first-stage upper layer clear oil, placed in a constant temperature box, set the temperature at 55°C, oscillated and stirred for 10 minutes, kept warm and stood for 12 hours, took out and sealed , naturally settle at room temperature for 1 day, collect the upper layer oil to obtain the second-stage supernatant clear oil; add 0.2mol / L sodium hydroxide solution to the second-stage upper layer clear oil, wash the oil to neutrality, add 20 parts of water to wa...

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Abstract

A method for the regeneration of semi-synthetic waste engine oil, through the pretreatment of waste engine oil flocculation precipitation, pickling, water washing, and dehydration, and then use optimized organic bentonite, a mixture of magnesium trisilicate and mesoporous silicon, and activated carbon to separate The regenerated engine oil with better performance parameters can be obtained through step-by-step adsorption and filtration; the method of the present invention for regenerating semi-synthetic waste engine oil has the characteristics of short regeneration period and high regeneration quality.

Description

technical field [0001] The invention belongs to the field of motor vehicle lubricating oil, in particular to a method for regenerating semi-synthetic waste engine oil. Background technique [0002] With the increasing number of motor vehicles in our country, tens of thousands of tons of semi-synthetic waste engine oil is produced every year. If these waste engine oils are directly discharged or treated by simple incineration methods, they will cause serious pollution to the environment. The existing mature technology is to crack waste engine oil into light-chain gasoline, and then put it into use as fuel. However, semi-synthetic engine oil is a high value-added product that is refined from petroleum and re-synthesized. The production process consumes a lot of resources. Simple use as fuel is also a huge waste. With the development of the economy and the shortage of oil resources, the supply and demand of semi-synthetic engine oil has problems, and the price of engine oil h...

Claims

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Application Information

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IPC IPC(8): C10M175/00
CPCC10M175/00
Inventor 瞿欢欢朱至放
Owner SUZHOU BOJIN BIOLOGICAL TECH
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