Method for regenerating rolled and used lubricating oil

A technology for waste lubricating oil and solution, applied in the direction of lubricating composition and the like, can solve the problems of slow development of regeneration process, pollute the environment, waste resources, etc., and achieve the effects of good application prospect, simple operation and low cost

Inactive Publication Date: 2019-03-22
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the late start of the recycling of rolling waste lubricating oil in my country and the small scale of production, the development of the regeneration process of rolling waste lubricating oil is relatively slow. A large amount of sulfuric acid and white clay are consumed in the process, which greatly wastes resources and pollutes the environment

Method used

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  • Method for regenerating rolled and used lubricating oil
  • Method for regenerating rolled and used lubricating oil
  • Method for regenerating rolled and used lubricating oil

Examples

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Comparison scheme
Effect test

Embodiment 1

[0025] A kind of regeneration method of rolling waste lubricating oil, specifically comprises the following steps:

[0026] (1) Heating the rolling waste lubricating oil to 60°C and standing for 4 days for pretreatment;

[0027] (2) Take 50ml of rolling waste lubricating oil and heat it to 60°C, add 6ml of ferric chloride solution with a concentration of 0.2mol / L to it, and then add 15ml of sodium hydroxide solution with a concentration of 1.0mol / L. Stir continuously for 5 min at a speed of 1 min;

[0028] (3) Screen the fly ash with 100 and 250 mesh screens respectively, then add 2.0g fly ash to the mixture in step (2), continue stirring for 20min at 500r / min, and finally mix the mixture at 1000r / min After centrifugation for 10 min, the obtained supernatant is the regenerated base oil.

[0029] In this example, rolling waste lubricating oil, flocculated oil and recycled oil such as figure 1 As shown, the UV absorbance of regenerated oil is as figure 2 Shown, the recovery...

Embodiment 2

[0031] A kind of regeneration method of rolling waste lubricating oil, specifically comprises the following steps:

[0032] (1) Heating the rolling waste lubricating oil to 30°C and standing for 2 days for pretreatment;

[0033] (2) Take 80ml of rolling waste lubricating oil and heat it to 30°C, add 4ml of ferric chloride solution with an equal concentration of 0.1mol / L to it, and then add 10ml of sodium hydroxide solution with a concentration of 0.8mol / L. Stir continuously for 2min at a speed of 1 / min;

[0034] (3) Screen the fly ash with 100 and 300 mesh screens respectively, then add 1.0g of fly ash to the mixture in step (2), continue to stir for 5min at 300r / min, and finally mix the mixture at 1500r / min After centrifugation for 10 min, the obtained supernatant is the regenerated base oil.

[0035] In this example, the UV absorbance of the regenerated oil was as figure 2 As shown, the recovery rate of recycled oil is as image 3 The physical and chemical properties of...

Embodiment 3

[0041] A kind of regeneration method of rolling waste lubricating oil, specifically comprises the following steps:

[0042] (1) Heating the rolling waste lubricating oil to 40°C and standing for 4 days for pretreatment;

[0043] (2) Take 80ml of rolling waste lubricating oil and heat it to 80°C, add 10ml of ferric chloride solution with an equal concentration of 0.2mol / L to it, and then add 20ml of sodium hydroxide solution with a concentration of 1.5mol / L. Stir continuously for 10min at a speed of 1 / min;

[0044] (3) Screen the fly ash with 50 and 200 mesh screens respectively, then add 3.0g fly ash to the mixture in step (2), continue stirring for 30min at 400r / min, and finally mix the mixture at 800r / min Centrifuge for 8 minutes, and the supernatant obtained is the regenerated base oil.

[0045] In this example, the UV absorbance of the regenerated oil was as figure 2 As shown, the recovery rate of recycled oil is as image 3 shown.

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Abstract

The invention discloses a method for regenerating rolled and used lubricating oil. The method mainly comprises the following steps: heating the rolled and used lubricating oil, standing and removing impurities; heating the rolled used lubricating oil to 30-80 DEG C, adding a ferric chloride solution into the lubricating oil, then adding a certain amount of sodium hydroxide solution, continuously stirring for 2-10 minutes, adding fly ash to be continuously stirred for 5-15 minutes; finally, centrifuging the mixture, and taking the obtained supernatant as the regenerated base oil. According to the method, the rolled used lubricating oil is flocculated in advance by adopting an inorganic flocculant, and then further adsorbed with fly ash. According to the base oil prepared by the method, thephysicochemical property and service performance are effectively restored, and the method is simple, easy to operate, clean and environmental-friendly. Moreover, the problems that the traditional regeneration process is large in floor area, high in energy consumption, high in operating cost, serious in environmental pollution and the like are solved.

Description

technical field [0001] The invention relates to a regeneration method of rolling waste lubricating oil, which belongs to the technical field of petroleum energy. Background technique [0002] Rolling waste lubricating oil is the waste oil replaced in the rolling process. In recent years, with the rapid development of my country's industry, industrial waste is also rapidly generated, and rolling waste lubricating oil is one of them. Since the sundries in the waste rolling lubricating oil are complex and difficult to recycle, most factories collect the waste rolling lubricating oil and burn it directly as fuel. Using this method to dispose of the waste rolling oil can not help but produce extreme It is a big waste, and a large amount of poisonous gas is also discharged during the burning process of rolling waste lubricating oil, which pollutes the environment. Therefore, today when the current oil crisis cannot be ignored, the recovery and reuse of rolling waste lubricating ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M175/00
CPCC10M175/00C10M175/0008C10M175/0016
Inventor 韩生常伟赵豆豆叶伟林蔺华林陈凤飞连俊薛原
Owner SHANGHAI INST OF TECH
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