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

A lubricating oil base oil, waste animal and plant technology, applied in the direction of fat oil/fat refining, fat production, fatty acid esterification, etc., to achieve the effects of making full use of resources, improving dietary health, and low product cost

Active Publication Date: 2014-12-10
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-neck flask equipped with a spherical condenser, add 270g of purified waste animal and vegetable oil, 40g of methanol, 0.5ml of concentrated sulfuric acid and concentrated phosphoric acid, mix and place in a constant temperature water bath at 70°C, and react for 2 hours under continuous stirring. After the reaction is complete, add 1.35g of basic catalyst KOH, and add methanol 15.0g, continue to stir and react for 2h, then leave to stand for layering, get the mixed solution of upper strata methanol and fatty acid methyl ester, and the lower floor is the glycerin layer; then The mixed layer of methanol and fatty acid methyl ester was distilled off methanol under reduced pressure to obtain fatty acid methyl ester; then 180g of fatty acid methyl ester, 26.8g of trimethylolpropane (TMP) and 1.5g of dimethyl tin were added to the In a three-necked flask, the temperature was raised to 140°C for 8 hours under stirring conditions, and the temperature was kept at ...

Embodiment 2

[0027] In a 500ml three-neck flask equipped with a spherical condenser, add 270g of purified waste animal and vegetable oil, 40g of methanol, 0.5ml of concentrated sulfuric acid and concentrated phosphoric acid, mix and place in a constant temperature water bath at 70°C, and react for 2 hours under continuous stirring. After completion of the reaction, add basic catalyst KOH 1.35g again, and add methanol 20g, continue to stir and react for 2h, then leave to stand for layering, get the mixed solution of upper strata methanol and fatty acid methyl ester, and the lower floor is the glycerol layer; The mixed layer of methanol and fatty acid methyl ester was distilled off methanol under reduced pressure to obtain fatty acid methyl ester; then 180g of fatty acid methyl ester, 31.2g of neopentyl glycol (NPG) and 1.5g of dioctyltin were added to a three-necked flask equipped with a decompression device , heated up to 120°C for 6 hours under agitation, then cooled down to room temperatu...

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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 Patents(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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