Method for preparing lubricant from biodiesel

A technology of biodiesel and epoxy biodiesel, which is applied in the fields of biofuel, lubricating composition, petroleum industry, etc., can solve the problems of affecting reaction balance, decreasing catalyst activity, low conversion rate, etc., and achieving moderate acid strength and low equipment corrosion. Effect

Active Publication Date: 2013-05-22
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

[0008] The technical problem to be solved by the present invention is: in the prior art, using biodiesel to prepare lubricating oil base oil, when using liquid acid as a catalyst, on the one hand, it will increase the discharge of waste water and the difficulty of post-treatment, on the other hand , the water content will

Method used

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  • Method for preparing lubricant from biodiesel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Weigh 50g of soybean oil fatty acid methyl ester, 1g of solid acid catalyst ZSM-5-H molecular sieve and 3.5g of formic acid and put them in a three-necked flask with a condenser and a stirrer. Constant pressure funnel for hydrogen oxide, preheat to 40°C, stir, add dropwise, keep the temperature between 40-60°C, add hydrogen peroxide dropwise, finish adding dropwise in one hour, keep the temperature at 60-65°C, and then Continue to react at this temperature for 3.5 hours. After the reaction is completed, cool the reaction mixture to room temperature, pour it into a separatory funnel, and let it stand to separate the lower layer of water phase and solid acid catalyst; then use the upper layer of oil phase (organic phase) first 5% (solute mass fraction) NaHCO 3 The solution was washed 3 times, 50mL each time; then washed 3 times with 5% (solute mass fraction) NaCl solution, 30mL each time; finally, washed 3 times with hot distilled water (70°C), 50mL each time, and the...

Embodiment 2

[0029] (1) Weigh 50g of rapeseed oil fatty acid methyl ester, 1.5g of solid acid catalyst ZSM-5-Na molecular sieve and 4g of formic acid into a three-necked flask with a condenser and a stirrer, and insert a 20g A constant pressure funnel for hydrogen peroxide, preheat to 40°C, stir, add dropwise, keep the temperature between 40-60°C, add hydrogen peroxide dropwise, drop it in one hour, keep the temperature at 60-65°C, then Continue to react at this temperature for 4 hours. After the reaction is completed, cool the reaction mixture to room temperature, pour it into a separatory funnel, and let it stand to separate the lower layer of water phase and solid acid catalyst; then the upper layer of oil phase (organic phase) with 5% (solute mass fraction) NaHCO 3 The solution was washed 3 times, 50mL each time; then washed 3 times with 5% (solute mass fraction) NaCl solution, 30mL each time; finally, washed 3 times with hot distilled water (70°C), 50mL each time, and the pH after was...

Embodiment 3

[0032] (1) Weigh 50g of soybean oil fatty acid methyl ester, 1.5g of solid acid catalyst Y-type molecular sieve NaO 2 ·Al 2 o 3 4.9SiO2 2 9.4H 2 O and 3.5g of formic acid are placed in a three-necked flask with a condenser and a stirrer, one end of the bottle mouth is inserted into a constant pressure funnel containing 20.5g of hydrogen peroxide, preheated to 40°C, stirred, added dropwise, and the temperature is maintained at 40 Between -60°C, add hydrogen peroxide dropwise, the dropwise addition is completed in one hour, keep the temperature at 60-65°C, and then continue to react at this temperature for 3.5 hours. liquid funnel, let it stand, and separate the lower aqueous phase and the solid acid catalyst; then the upper oil phase (organic phase) was first washed with 5% (solute mass fraction) of NaHCO 3 The solution was washed 3 times, 50mL each time; then washed 3 times with 5% (solute mass fraction) NaCl solution, 30mL each time; finally, washed 3 times with hot disti...

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Abstract

The invention discloses an epoxidation, isomerization and esterification process for preparing lubricant from biodiesel and relates to a process for preparing alcohol-ester-type environment-friendly lubricant base oil by using solid acid as a catalyst, and belongs to the technical field of lubricant modification processes. According to the process, the biodiesel (fatty-acid methyl ester) is subjected to epoxidation by using hydrogen peroxide, formic acid and the solid-acid catalyst, and thus, double bonds are saturated; and long-chain fatty acid is adopted to carry out isomerization and esterification reaction under the participation of the solid-acid catalyst, unstable epoxy bonds are opened, and thus, isomerized biodiesel grease monoester is obtained. The solid-acid catalyst used by the process has the characteristics of good stability, easiness in separation, and environment friendliness.

Description

technical field [0001] The invention belongs to the technical field of biodiesel modification technology, and in particular relates to a method for preparing lubricating base oil through high-quality modification of epoxy biodiesel. Background technique [0002] According to statistics, about 5 million to 10 million tons of petroleum-based chemicals enter the biosphere every year in the world. Even in countries with high lubricant recycling rates (greater than 60%), 4% to 10% of lubricants still enter the environment. In the European Community, 600,000 tons of lubricating oil enter the environment every year. The oils that cause these problems are hydraulic oils in circulating systems and once-through lubricating oils such as chain saw oils, two-stroke engine oils, railway track lubricants, open gear oils, and lubricants such as wire grease. The lubricant entering the environment seriously pollutes land, rivers and lakes, and also seriously endangers the ecological environm...

Claims

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Application Information

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IPC IPC(8): C11C3/04C10M105/34
CPCY02E50/13Y02E50/10
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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