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Refining technique of base oil regenerated from used lubrication oil

A technology for regenerating base oils and waste lubricating oils, applied in lubricating compositions, etc., can solve problems such as ineffective removal of acidic substances, non-compliance with environmental protection requirements, acid corrosion, etc., to maximize product benefits, improve appearance quality, The effect of efficient fractionation

Inactive Publication Date: 2017-01-18
济南亿诺再生资源有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0010] Although the above-mentioned technology for regenerating base oil from waste lubricating oil can regenerate base oil from waste lubricating oil, the acidic substances in it have not been effectively removed, there is acid corrosion, and it does not meet environmental protection requirements.

Method used

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  • Refining technique of base oil regenerated from used lubrication oil
  • Refining technique of base oil regenerated from used lubrication oil
  • Refining technique of base oil regenerated from used lubrication oil

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Embodiment Construction

[0040] like figure 1 and figure 2 In the process flow diagram given, the refining process of waste lubricating oil regenerated base oil of the present invention includes solid waste removal, solvent pretreatment, flocculation treatment, atmospheric distillation, vacuum distillation, rectification and solvent refining stages. The specific process is as follows stated.

[0041] (1) Remove solid waste

[0042] The collected waste lubricating oil is poured into a high-speed centrifuge, and the solid waste in the waste lubricating oil is removed by centrifugation to obtain waste lubricating oil without solid impurities, which effectively avoids coking after it enters the heating equipment.

[0043] (2) Solvent pretreatment

[0044] Mix No. 120 solvent oil and methyl tert-butyl ether in a mass ratio of 1:1 to 1:5 to make a mixed solvent, and waste lubricating oil and mixed solvent in a mass ratio of 1:1.5 to 1:2 Proportional mixing, stirring for 0.5-1 hour, standing for 5-8 hou...

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Abstract

Disclosed is a refining technique of base oil regenerated from used lubrication oil, and the refining technique comprises the following steps of 1, removing solid waste, which includes removing solid waste from used lubrication oil by centrifugation; 2, solvent pretreatment, which includes extracting mixed impurities and moisture through a solvent and obtaining raw oil after removing upper oil; 3, flocculation treatment, which includes turning mixtures obtained from step 2 into a mixture of flocculation; 4, atomospheric distillation; 5, carrying out reduced pressure distillation; 6, carrying out rectification; 7, solvent refining: putting oil produced from a rectifying column into a treatment tank and when the height of the oil level in the treatment tank reaches 65%-75% of the height of the treatment tank, adding by mass 10%-40% of 1-Methyl-2-pyrrolidinone, and carrying out solvent refining. The refining technique of base oil regenerated from used lubrication oil has the advantages of low investment and high yield efficiency, meanwhile, the refining technique accords with the requirement of environmental protection, reduces vacuum residuum by 15%, improves product yield, facilitates the overhauling of equipment, prolongs the production period, largely improves production efficiency and appearance quality of minus line oil, and helps to obtain high quality regenerated base oil.

Description

technical field [0001] The invention relates to a refining process for regenerating base oil from waste lubricating oil, and belongs to the technical field of waste lubricating oil regeneration. Background technique [0002] The base oil refining process of domestic waste lubricating oil is mostly head-pulling under normal pressure, and sulfuric acid is used to refine a lime milk-clay clay. The process is complicated and backward, waste of materials, and serious environmental pollution. The recycling of waste lubricating oil in foreign countries is mostly based on the hydrogenation process. [0003] According to the records of the third edition of "Waste Lubricating Oil Regeneration" published by Sinopec Press for the second time in August 2000, the thin-film distilled clay process is used abroad, and the yield of the product base oil obtained by this process is only 65%. 7%, the comprehensive yield of the product is 72%, and the discharge of by-product residual oil is as h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M175/00
CPCC10M175/00C10M175/0033C10M175/005C10M175/0058
Inventor 康兴永岳安涛李刚
Owner 济南亿诺再生资源有限公司
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