A method for recycling waste mineral oil

A technology for waste mineral oil and heavy recovery, which is applied in the treatment of hydrocarbon oil, petroleum industry, and multi-stage series refining process treatment, etc. Avoid pickling process, high product quality, reduce acidity effect

Active Publication Date: 2021-03-30
ZHAOQING NEW RONGCHANG IND ENVIRONMENTAL PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of the present invention can effectively remove decolorization, demetallization and desulfurization at reduced temperature, no hydrogen is needed in the process, no acid and alkali waste is discharged, environmental protection and pollution-free, and low investment cost, although the recovery rate of waste oil in this method is relatively high , but the quality of the regenerated oil obtained is poor and contains many impurities, which cannot meet the national standard

Method used

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  • A method for recycling waste mineral oil

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Effect test

Embodiment 1

[0031] Embodiment 1 A kind of method of heavy recycling of waste mineral oil

[0032] The method for the heavy recycling of described waste mineral oil, described steps are as follows:

[0033] S1. Settling: the waste mineral oil is transported to the settling tank, and after filtering out the solid impurities with large particle size in the waste mineral oil, a flocculant is added for sedimentation and separation to form upper waste oil, middle liquid and bottom slag; the flocculant It is polyacrylamide; the added amount of the flocculant is 1% of the waste mineral oil weight;

[0034] S2. Distillation under reduced pressure: pump the waste oil in the upper layer obtained in step S1 into the reaction kettle, add extractant and catalyst, stir evenly, and directly heat the furnace under the kettle for 1 hour, the heating temperature is 85 ° C, and the pressure is 5Kpa, separate light component and water; The consumption ratio of described extraction agent and upper strata wast...

Embodiment 2

[0038] Embodiment 2 A kind of method of heavy recycling of waste mineral oil

[0039] The method for the heavy recycling of described waste mineral oil, described steps are as follows:

[0040] S1. Settling: the waste mineral oil is transported to the settling tank, and after filtering out the solid impurities with large particle size in the waste mineral oil, a flocculant is added for sedimentation and separation to form upper waste oil, middle liquid and bottom slag; the flocculant It is zinc chloride; the addition of the flocculant is 3% of the waste mineral oil weight;

[0041]S2. Distillation under reduced pressure: pump the waste oil in the upper layer obtained in step S1 into the reaction kettle, add extractant and catalyst, stir evenly, and directly heat the heating furnace under the kettle for 1.5 hours, the heating temperature is 105 ° C, and the pressure is 8Kpa, separate light component and water; The consumption ratio of described extraction agent and upper strat...

Embodiment 3

[0045] Embodiment 3 A kind of method of heavy recycling of waste mineral oil

[0046] The method for the heavy recycling of described waste mineral oil, described steps are as follows:

[0047] S1. Settling: the waste mineral oil is transported to the settling tank, and after filtering out the solid impurities with large particle size in the waste mineral oil, a flocculant is added for sedimentation and separation to form upper waste oil, middle liquid and bottom slag; the flocculant Be aluminum chloride; The addition amount of described flocculant is 5% of waste mineral oil weight;

[0048] S2, vacuum distillation: pump the upper waste oil obtained in step S1 into the reaction kettle, add extractant and catalyst, stir evenly, and directly heat the bottom of the kettle with a heating furnace for 2 hours at a heating temperature of 85-120°C. The pressure is 10Kpa to separate light components and water; the amount ratio of the extractant to the upper waste oil is 60mL:100mL; th...

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Abstract

The invention belongs to the technical field of waste mineral oil recovery, and particularly relates to a method for recycling waste mineral oil. The method for recycling the waste mineral oil comprises the steps of settling and filtering, reduced pressure distillation and catalysis, nanofiltration and the like. The method for recycling the waste mineral oil is simple and easy to operate, the recovery rate of the waste mineral oil can reach 80% or above, and the obtained regenerated base oil is few in impurity, high in oil product quality, high in oxidation resistance and not liable to be aged.

Description

technical field [0001] The invention belongs to the technical field of waste mineral oil recovery, and in particular relates to a method for recycling waste mineral oil. Background technique [0002] Waste mineral oil refers to mineral oil that is extracted and refined from petroleum, coal, and oil shale, and whose original physical and chemical properties have been changed due to external factors in the process of mining, processing, and use, and can no longer be used . The waste mineral oil produced on the market is mainly produced after long-term use of products blended with base oil and additives. The content of additives is generally about 10%. Its function is mainly to improve the performance of the product in terms of wear reduction, lubrication, sealing, corrosion prevention, cooling, cleaning, and rust prevention. The main types are: antioxidants, antirust agents, and antifoaming agents. agent, viscosity index improver, pour point depressant, dispersant, etc. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G53/04
CPCC10G53/04C10G2300/1007C10G2300/70
Inventor 庄华鑫杨桂海马剑王松彪尤小艺
Owner ZHAOQING NEW RONGCHANG IND ENVIRONMENTAL PROTECTION CO LTD
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