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Method for producing cutting oil and mould release agent by using waste engine oil

A release agent and cutting oil technology, applied in the petroleum industry, lubricating compositions, etc., can solve the problems of low resource recovery rate, high economic cost, low economic value, etc., and achieve low technical level and low equipment investment requirements. , the effect of low cost

Inactive Publication Date: 2017-11-28
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country's regeneration process is mainly sulfuric acid-clay refining regeneration process: waste lubricating oil can be converted into different grades of base oil, such as waste engine oil through precipitation-distillation-pickling-alkali neutralization-water washing-activated clay adsorption-filtration and other series According to the quality and components of waste engine oil, a certain amount of oil close to the original type of engine oil and fuel oil can be recovered in the end, but this method consumes a lot of water, acid, alkali, white clay and Heating energy and power energy, etc. At the same time, a considerable amount of industrial wastes will be discharged, causing environmental pollution, low resource recovery rate and high economic cost; in addition, waste engine oil is also used for incineration or road oiling for dust prevention. The economic value of the method is lower, and the waste engine oil will be added with sulfur and phosphorus additives such as ZDDP and alkylaniline during use, and incineration for energy or spraying on the road will also cause certain environmental pollution

Method used

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  • Method for producing cutting oil and mould release agent by using waste engine oil

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Dissolve n-octanoic acid in hot water to prepare n-octanoic acid solution with a mass concentration of 10%, raise the temperature to 80°C and stir well, add waste engine oil with 3 times the mass of n-octanoic acid under stirring state and heat up to 80°C and stir for 30min , then keep the temperature for 5 hours, separate the liquid, repeat the above steps to extract the supernatant for the second time and the third time, wash with hot water after each extraction, and then combine all the extracts and washings Filter off the residue to obtain the release agent precursor, control the water content in the release agent precursor to 40% by controlling the amount of hot water used in the washing process, and collect the upper oily solution after the third extraction and separation as the cutting oil precursor stand-by;

[0020] (2) Add the release agent precursor solution, emulsifier and wetting and dispersing agent obtained in step (1) into the reactor, and the weight...

Embodiment 2

[0023] (1) Dissolve n-octanoic acid in hot water to prepare n-octanoic acid solution with a mass concentration of 15%, raise the temperature to 80°C and stir well, add waste engine oil with 4 times the mass of n-octanoic acid under stirring state and heat up to 80°C and stir for 30min , and then keep it for 6 hours, separate the liquid, repeat the above steps to extract the supernatant for the second time and the third time, wash with hot water after each extraction, and then combine all the extracts and washings Filter off the residue to obtain the release agent precursor, control the water content in the release agent precursor to 50% by controlling the amount of hot water used in the washing process, and collect the upper oily solution after the third extraction and separation as the cutting oil precursor stand-by;

[0024] (2) Add the release agent precursor solution, emulsifier and wetting and dispersing agent obtained in step (1) into the reactor, wherein the weight perc...

Embodiment 3

[0027](1) Dissolve n-octanoic acid in hot water to prepare n-octanoic acid solution with a mass concentration of 20%, raise the temperature to 80°C and stir well, add waste engine oil with 5 times the mass of n-octanoic acid under stirring state and heat up to 80°C and stir for 30min , and then keep it for 6 hours, separate the liquid, repeat the above steps to extract the supernatant for the second time and the third time, wash with hot water after each extraction, and then combine all the extracts and washings Filter off the residue to obtain the release agent precursor, control the water content in the release agent precursor to 60% by controlling the amount of hot water used in the washing process, and collect the upper oily solution after the third extraction and separation as the cutting oil precursor stand-by;

[0028] (2) Add the release agent precursor solution, emulsifier and wetting and dispersing agent obtained in step (1) into the reaction kettle, wherein the weig...

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Abstract

The invention discloses a method for producing cutting oil and a mould release agent by using waste engine oil. According to the method, the waste engine oil is extracted for a plurality of times by using a surface active agent,, namely n-octanoic acid hot water solution, the obtained oily solution is distilled for collecting lightweight oil, and the cutting oil is produced by complementing other components according to a design scheme; the obtained aqueous solution is filtered by using a fine screen, so that the dust or metal debris precipitate in extract liquor can be removed; the contents of an extract and n-octanoic acid in the extract liquor are measured, and the mould release agent can be produced by complementing other components according to a scheme. The method provided by the invention is efficient in production, low in cost, energy-saving and environmentally-friendly, thus having a better market application prospect.

Description

technical field [0001] The invention belongs to the technical field of resource recycling of waste engine oil and synthesis of release agent and cutting oil, and in particular relates to a method for producing cutting oil and release agent by using waste engine oil. Background technique [0002] Engine oil is generally compounded from mineral oil. Engine oil is a series of physical and chemical changes that occur due to high temperature and extreme pressure caused by high-speed friction of mechanical parts during use. Oxidation produces acidic organic oxides. Carbonization produces fine carbon deposits; at the same time, the superabsorbent metal powder produced by the friction of metal parts and the dust, sand, and fiber substances in the intake process of the machine will also enter, and finally the appearance of the engine oil turns black red or black opaque, and the viscosity It becomes larger and gradually oxidized during long-term use, which increases the acid value and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M175/00C10M173/02C10M169/04C10N30/06C10N30/08C10N30/04C10N40/36C10N40/22
CPCC10M169/04C10M173/02C10M175/0025C10M175/005C10M2201/041C10M2203/1006C10M2209/084C10M2209/104C10M2209/108C10M2209/109C10M2215/06C10M2219/044C10M2223/045C10N2030/04C10N2030/06C10N2030/08C10N2040/22C10N2040/36
Inventor 王爱军冯九菊陈得军
Owner ZHEJIANG NORMAL UNIVERSITY
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