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Method for preparing epoxidized oil under ultrasound condition

An epoxidation and conditioning technology, applied in the production of fatty acids, chemical modification of fatty acids, etc., can solve the problems of low epoxy value and epoxy conversion rate, long time, etc., to improve epoxy value, reduce operating costs, and economical Good results

Inactive Publication Date: 2012-01-04
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the disclosed method of above-mentioned patent document all exists the time that carries out epoxidation reaction too long, the weak point that epoxy value and epoxy conversion rate are low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] a. Take a certain amount of soybean oil and place it in a reaction vessel, and place the reaction vessel in an ultrasonic device;

[0020] B, get the formic acid of 15% of the volume of soybean oil taken in step a, and the catalyst (sulfuric acid) of 0.75% of the volume of soybean oil taken in step a, stir and mix, and prepare a mixed solution;

[0021] c, adding the mixed solution prepared in step b to the reaction system in step a while stirring;

[0022] d. After adjusting the temperature of the system obtained in step c, turn on the ultrasonic device, and slowly add hydrogen peroxide dropwise to it, and control the frequency and power of the ultrasonic wave; when adding hydrogen peroxide, the temperature of the system is 35°C, and the concentration of the dropped hydrogen peroxide is 70% by mass. %, the volume is 35% of the soybean oil volume, the ultrasonic frequency is 28kHz, and the ultrasonic power is 150w;

[0023] e. After the addition of hydrogen peroxide is...

Embodiment 2

[0027] a. Take a certain amount of soybean oil and place it in a reaction vessel, and place the reaction vessel in an ultrasonic device;

[0028] B, get the glacial acetic acid of 10% of the volume of soybean oil taken in step a, and the catalyst (stearic acid) of 0.95% of the volume of soybean oil taken in step a, stir and mix, and prepare a mixed solution;

[0029] c, adding the mixed solution prepared in step b to the reaction system in step a while stirring;

[0030] d. After adjusting the temperature of the system obtained in step c, turn on the ultrasonic wave, and slowly add hydrogen peroxide thereinto, and control the frequency and power of the ultrasonic wave. When hydrogen peroxide is added dropwise, the temperature of the system is 45°C, the mass percent concentration of the hydrogen peroxide added is 30%, the volume is 70% of the volume of soybean oil, the ultrasonic frequency is 45kHz, and the ultrasonic power is 180w;

[0031] e. After the addition of hydrogen p...

Embodiment 3

[0035] a. Take a certain amount of linseed oil and place it in a reaction vessel, and then place the reaction vessel in an ultrasonic device;

[0036] B, get the formic acid of 20% of the volume of linseed oil taken in step a, and the catalyst (phosphoric acid) of 1.05% of the volume of linseed oil taken in step a, stir and mix, and prepare mixed solution;

[0037] c, adding the mixed solution prepared in step b to the reaction system in step a while stirring;

[0038] d. Turn on the ultrasound after adjusting the temperature of the system obtained in step c, and slowly add hydrogen peroxide dropwise therein to control the frequency and power of the ultrasound; when adding hydrogen peroxide, the temperature of the system is 55°C, and the concentration of the hydrogen peroxide dropped is 80% by mass , the volume is 30% of the volume of linseed oil, the ultrasonic frequency is 45kHz, and the ultrasonic power is 300w;

[0039] e. After the addition of hydrogen peroxide is comple...

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Abstract

The invention relates to a method for preparing epoxidized oil under the ultrasound condition, comprising the following steps: a. taking and placing a certain amount of plant oil into a reaction container, placing the reaction container into an ultrasound device, stirring while adding the mixed liquid of formic acid (glacial acetic acid or the mixture of formic acid and glacial acetic acid) and catalyst, adjusting temperature of the system, adding hydrogen peroxide drop by drop slowly as well as starting ultrasound, controlling frequency and power of the ultrasound, adjusting the temperature of the system after the adding of hydrogen peroxide is finished, carrying out ultrasound in a certain reaction frequency, certain reaction power and reaction time, lowering the temperature to room temperature after the reaction, removing the lower layer after stewing, and obtaining crude epoxidized plant oil; b. transferring the crude epoxidized plant oil obtained in step a to water washing equipment for washing, and removing the water layer after stewing; and c. transferring the liquid obtained in step b to a vacuum distillation unit (VDU) for vacuum distillation to remove moisture and obtaining the epoxidized plant oil product.

Description

technical field [0001] The invention relates to a preparation method of epoxidized oil, in particular to a preparation method of epoxidized oil under ultrasonic conditions. The technology relates to the field of sonochemistry, and also relates to the field of epoxy plasticizer preparation. Background technique [0002] Plasticizer is an important chemical raw material, which is widely used in the processing of plastic and rubber products. Currently commonly used plasticizers, phthalates, are low-molecular substances, which tend to age products and are toxic; and with the intensification of the oil crisis, the price of phthalates has risen sharply. Therefore, the use of renewable resources to prepare environmentally friendly plasticizers has become a research hotspot. Epoxy vegetable oil is a product obtained by treating refined vegetable oil with peroxide. It is suitable for various polyvinyl chloride products, various food packaging materials, medical products "blood tran...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11C3/00
Inventor 刘国琴韩立娟李琳
Owner HENAN UNIVERSITY OF TECHNOLOGY
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