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Method for preparing lube base oil by plant oil

A technology for lubricating base oil and vegetable oil, which is applied in the preparation of liquid hydrocarbon mixtures, lubricating compositions, base materials, etc., can solve the problems of long production lines and low yields, and achieve short production lines, high yields, and market Competitive effect

Inactive Publication Date: 2007-12-26
DONGYING AORUN GASOLINEEUM CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After years of research, it is known that vegetable base oils can be developed. The preparation of existing vegetable base oils is made by esterification of vegetable fatty acids and corresponding polyols. The production line is long and the yield is low.

Method used

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  • Method for preparing lube base oil by plant oil
  • Method for preparing lube base oil by plant oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The first step: methyl esterification of vegetable oil

[0019] Add cottonseed oil into the reaction kettle, heat to 108±2°C, after the water evaporates, add 6 times the molar ratio of methanol, 6% NaOH of the weight of cottonseed oil, react at 65±1°C for 4 hours, recover methanol, and cool , separation of glycerol, methyl ester layer washed with water to neutral and dried after treatment to obtain fatty acid methyl ester.

[0020] The second step: transesterification

[0021]Add fatty acid methyl ester into the reaction kettle, heat to 108±2°C, wait for the water to evaporate completely, add pentaerythritol according to 50% of fatty acid methyl ester mole, and then add 6% NaOH of fatty acid methyl ester weight, at 80±2°C Temperature, reaction for 4 hours, after cooling, filtering to remove excess alkali, washing with water until neutral, drying and fractional distillation, the quaternary ester was obtained.

[0022] The use of quaternary esters in lubricating oil bas...

Embodiment 2

[0024] The first step: methyl esterification of vegetable oil

[0025] Add cottonseed oil into the reaction kettle, heat to 109±1°C, after the water evaporates, add 5.5 times the molar ratio of methanol, 10% K of the weight of cottonseed oil 2 CO 3 , reacted at 60±2°C for 5 hours, recovered methanol, cooled, separated glycerin, and washed the methyl ester layer with water to neutralize and dry to obtain fatty acid methyl ester.

[0026] The second step: transesterification

[0027] Add fatty acid methyl esters into the reaction kettle, heat to 109±1°C, wait for the water to evaporate completely, add pentaerythritol according to 60% of fatty acid methyl ester moles, and then add 4% of fatty acid methyl ester weight K 2 CO 3 , at a temperature of 90±3°C, reacted for 6 hours, cooled, filtered to remove excess alkali, washed with water until neutral, dried and fractionated to obtain a quaternary ester.

Embodiment 3

[0029] The first step: methyl esterification of vegetable oil

[0030] Add cottonseed oil into the reaction kettle, heat to 107±1°C, after the water evaporates, add 7 times the molar ratio of methanol, 6% NaOH of the weight of cottonseed oil, react at 55±2°C for 7 hours, recover methanol, and cool , separation of glycerol, methyl ester layer washed with water to neutral and dried after treatment to obtain fatty acid methyl ester.

[0031] The second step: transesterification

[0032] Add fatty acid methyl ester into the reaction kettle, heat to 108±1°C, wait for the water to evaporate completely, add pentaerythritol according to 65% of the mole of fatty acid methyl ester, then add 7 sulfuric acid of the weight of fatty acid methyl ester, at a temperature of 50±2°C , Reacted for 5.5 hours, cooled, filtered to remove excess alkali, washed with water until neutral, dried and fractionated to obtain quaternary ester.

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Abstract

A method for preparing lubricating oil basic oil by vegetable oil consists of modifying the vegetable oil to methyle esters first to obtain methyl fatty acid salt, then making the methyl fatty acid salt and the corresponding polyatomic alcohol perform ester-exchanging to prepare corresponding polyatomic alcohol methyl fatty acid salt, finally obtaining the lubricating oil basic oil. The invention breaks through the routine thinking that the lubricating oil basic oil can only be obtained by esterification reaction between aliphatic acid and pentaerythrite, on the mature basis of modifying the vegetable oil to methyle esters, adopts ester-exchanging reaction mode between methyl fatty acid salt and polyatomic alcohol. Proved by researching test, the method is of low production cost, strong competitive power in the market and is of broad prospect. The vegetable oil can be regenerated, which solves the problem that the oil and the ore are in short supply, furthermore, the vegetable oil product possesses biodegradability which avoids the destroy to the environment, at the same time, selecting the vegetable oil as raw material, can promote the agroresource to centralize towards the high-value agricultural product, can push the strategic adjustment of the agricultural structure, can optimize resource allocation, and the economic and social benefit are prominent.

Description

technical field [0001] The present invention relates to an improved method of preparing lubricating oil base oils from vegetable oils for use in place of mineral oils. Background technique [0002] Lubricating oil is mostly made of petroleum mineral oil. However, since petroleum is a non-renewable resource, with the continuous growth of economic scale, the amount of petroleum exploitation is increasing, which makes the usable petroleum reserves sharply reduced. The global petroleum The turmoil has made countries all over the world realize the importance and huge demand of new energy and alternative fuels. The non-renewability of petroleum causes mineral lubricating oil to enter the environment due to leakage, splashing, evaporation and disposal of oil and gas, causing environmental pollution. In this context, Western countries have vigorously developed renewable energy to protect the ecological environment and energy security. After many years of research, it has been know...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G3/00C11C3/10C10M101/04
CPCY02P30/20
Inventor 戴荣继徐晓猛赵炎斌
Owner DONGYING AORUN GASOLINEEUM CHEM