Method for preparing base oil of lubricating oil from waste animal and vegetable oil

A technology of lubricating base oil, waste animals and plants, applied in the direction of oil/fat refining, fat production, fatty acid esterification, etc., to achieve the effect of improving dietary health, solving comprehensive utilization, and reducing dependence on petroleum resources

Active Publication Date: 2013-09-04
QINGDAO ZHONGLIAN MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The transesterification catalysts are mainly methoxide and lipase. The methoxide catalyst has very strict requirements on raw materials, and the reaction time is long; the lipase catalyst is expensive and the conversion rate is low.
However, there have been no relevant reports on the preparation of polyol esters by using waste animal and vegetable oils with complex components as substrates for transesterification.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In a 500ml three-necked flask equipped with a spherical condenser, add 270g of purified waste animal and vegetable oil, 40g of methanol, 0.5ml each of concentrated sulfuric acid and concentrated phosphoric acid, mix them and place them in a constant temperature water bath at 70°C, and react for 2h under continuous stirring conditions ; After the reaction is complete, add 1.35g of basic catalyst KOH, and add 15.0g of methanol, continue to stir and react for 2h, then stand for layering, take the upper layer of methanol and fatty acid methyl ester mixture, the lower layer is the glycerin layer; The mixed layer of methanol and fatty acid methyl esters is distilled under reduced pressure to remove methanol to obtain fatty acid methyl esters; then 180 g of fatty acid methyl esters, 26.8 g of trimethylolpropane (TMP) and 1.5 g of dimethyl tin are added to the equipped decompression device In a three-necked flask with stirring, the temperature was raised to 140°C and the reaction...

Embodiment 2

[0027] In a 500ml three-necked flask equipped with a spherical condenser, add 270g of purified waste animal and vegetable oil, 40g of methanol, 0.5ml each of concentrated sulfuric acid and concentrated phosphoric acid, mix them and place them in a constant temperature water bath at 70°C, and react for 2h under continuous stirring conditions ; After the reaction is complete, add 1.35g of basic catalyst KOH, and add 20g of methanol, continue to stir and react for 2h, and then stand for layering, take the upper layer of methanol and fatty acid methyl ester mixture, the lower layer is the glycerin layer; The mixed layer of methanol and fatty acid methyl esters was distilled under reduced pressure to remove methanol to obtain fatty acid methyl esters; then 180g of fatty acid methyl esters, 31.2g of neopentyl glycol (NPG) and 1.5g of dioctyltin were added to a three-necked flask equipped with a decompression device , Under stirring conditions, the temperature is raised to 120°C and th...

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PUM

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Abstract

The invention relates to a method for preparing base oil of lubricating oil from waste animal and vegetable oil. The method comprises the following step that waste animal and vegetable oil is subjected to deacidification and methyl esterification treatment to form fatty acid methyl ester; and the fatty acid methyl ester and polyhydric alcohol undergo a transesterification reaction in the presence of one or more organic tin catalysts to produce polyol ester, wherein the one or more organic tin catalysts are selected from monobutyltin, stannous octoate, dimethyltin, dioctyltin and tetraphenyltin. The method adopts easily available raw materials, has allows mild technical conditions. The base oil of lubricating oil has good lubricity and biodegradability. The method can realize comprehensive utilization of waste animal and vegetable oil, can change waste animal and vegetable oil into values, and can improve safety of catering and food industries.

Description

technical field [0001] The invention relates to a preparation method of polyol ester used as lubricating oil base oil, belongs to the field of polyol ester synthesis, and particularly relates to a method for preparing environment-friendly polyol ester lubricating oil base oil by using waste animal and vegetable oil as a substrate. technical background [0002] Polyol esters are a class of compounds that can be used as lubricating materials produced by the esterification reaction of organic acids and polyols. They have good high and low temperature performance, low volatility, excellent tribological properties and unique biodegradability. One of the most potential synthetic lubricants, its market demand has entered a period of rapid growth. However, due to the lack of high-quality organic acid raw materials in China, the current domestic market is mainly monopolized by foreign products. With the continuous rise of crude oil prices in the international market and people's in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C3/04C11C3/10C11B3/04
Inventor 徐状陈云龙
Owner QINGDAO ZHONGLIAN MATERIAL TECH CO LTD
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