Preparation method of biodegradable lubricating oil

A technology of lubricating oil and epoxy biodiesel, applied in lubricating compositions, petroleum industry, base materials, etc., can solve problems such as high reaction temperature, affecting reaction balance, and decreased catalyst activity, so as to reduce reaction temperature and reaction time , the effect of reducing stress

Active Publication Date: 2013-05-08
SHANDONG XINGQIANG CHEM IND TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: in the prior art, the required reaction temperature of epoxy biodiesel ring-opening isomerization esterification modification reaction is higher, and the reaction time is longer; The discharge of wastewater and the difficulty of post-treatment. On the other hand, the water content will affect the balance of the reaction, which will affect the conversion rate of the reaction. When using a resin catalyst, if there are metal ions in the reaction system, the metal ions may be mixed with the resin. Chelation is carried out, so that the activity of the catalyst is reduced, and the conversion rate of the reaction is not high

Method used

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  • Preparation method of biodegradable lubricating oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh acetic acid and SO 4 2- / ZrO 2 The catalyst is placed in a three-necked flask with a condenser and a stirrer, stirred in an ultrasonic (ultrasonic frequency is 40KHz, ultrasonic power is 800W) water bath device, reflux, heated to a temperature of 60 ° C, and then adding epoxy biodiesel (ring Oxygenated soybean oil fatty acid methyl ester), the molar ratio of epoxy soybean oil fatty acid methyl ester and acetic acid is 1:2, the mass ratio of catalyst and epoxy soybean oil fatty acid methyl ester is 2.5:100, ring-opening reaction, during the reaction , take a sample every 15 minutes, take a sample from a three-necked flask, and measure the epoxy value of the sample after alkali washing and decompression to recover the fatty acid. After 1 hour, the epoxy value tends to 0 and does not change anymore, which is end point of the reaction. When the reaction reaches the end, the reaction is stopped, the reaction mixture is cooled to room temperature, poured into a separ...

Embodiment 2

[0031] Weigh out butyric acid and SO 4 2- / Fe 2 o 3 The catalyst is placed in a three-necked flask with a condenser and a stirrer, stirred in an ultrasonic (ultrasonic frequency is 28KHz, ultrasonic power is 700W) water bath device, reflux, heated to a temperature of 55 ° C, and then adding epoxy biodiesel (ring Oxygenated rapeseed oil fatty acid methyl ester), the molar ratio of epoxy rapeseed oil fatty acid methyl ester and butyric acid is 1:4, the mass ratio of catalyst and epoxy rapeseed oil fatty acid methyl ester is 2.5:100, ring-opening reaction , take a sample every 15 minutes in the reaction process, take a sample from a three-necked flask, measure its epoxy value (the assay method of epoxy value, as described in Example 1) after the sample is washed with alkali and reclaim the fatty acid under reduced pressure, After 1h, the epoxy value tends to 0 and does not change, which is the end of the reaction. When the reaction reaches the end, the reaction is stopped, th...

Embodiment 3

[0033] Weigh valeric acid and SO 4 2- / Al 2 o 3 The catalyst is placed in a three-necked flask with a condenser and a stirrer, stirred in an ultrasonic (ultrasonic frequency is 45KHz, and ultrasonic power is 450W) water bath device, refluxed, heated to a temperature of 55 ° C, and then added epoxy biodiesel (ring Oxygenated castor oil fatty acid methyl ester), the molar ratio of epoxy castor oil fatty acid methyl ester and valeric acid is 1:5, the mass ratio of catalyst to epoxy castor oil fatty acid methyl ester is 3:100, ring-opening reaction, reaction process Sampling every 15 minutes, sampling from the three-necked flask, after the sample was washed with alkali and reclaiming the fatty acid under reduced pressure, measure its epoxy value (the assay method of epoxy value, as described in Example 1), after 1.5 h, the epoxy value tends to 0, and no longer changes, which is the end of the reaction. When the reaction reaches the end, the reaction is stopped, the reaction mi...

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Abstract

The invention belongs to the technical field of a biodiesel modification technology, and particularly relates to a preparation method of alcohol ester type environmentally-friendly lubricant base oil. The method comprises the following steps of: under an ultrasonic-assistedcondition, carrying out chemical modification to epoxy biodiesel (epoxy fatty acid methyl ester) serving as a raw material by solid superacid catalytic isomerization, and opening an unstable epoxy bond in the epoxy biodiesel with fatty acid by adopting an esterification method to form a hydroxy-containing modified biodiesel monoester with a heterogeneous shape. The solid superacid has the characteristics of high catalytic efficiency, good stability, easiness in separation, environment friendliness and the like, and the adoption of ultrasonic reinforcement can greatly shorten the reaction time and reduce the reaction temperature.

Description

technical field [0001] The invention belongs to the technical field of biodiesel modification technology, and in particular relates to a method for preparing degradable lubricating oil base oil through high-quality modification of epoxy biodiesel. Background technique [0002] At present, the pollution problem is very serious. About 50% of the lubricating oil sold in the world ends up in the environment through leakage and loss. Threats to the environment can be avoided by preventing undesirable losses, recovering and recycling mineral lubricants, or using environmentally friendly lubricants, etc. Epoxy biodiesel is recognized as a rapidly biodegradable base oil for environmentally friendly lubricants. Epoxy biodiesel based lubricants exhibit good tribological properties, high viscosity index, and flash point. However, compared with mineral oil-based lubricants, it also has some disadvantages, such as its low oxidation and low temperature stability, which can be improved. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M101/04
Inventor 任庆功徐庆瑞陈诚李为民
Owner SHANDONG XINGQIANG CHEM IND TECH RES INST CO LTD
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