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[Chemical Knowledge]：Manufacturing method and process of epoxy soybean oil

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The manufacturing method
of epoxidized soybean oil
1. Introduction

epoxidized soybean oil is an important chemical production raw material, widely used in plastics, rubber, coatings and other fields. Due to its unique chemical properties and wide range of applications, the manufacturing method of epoxidized soybean oil has attracted much attention. This article will introduce the manufacturing method of epoxidized soybean oil in detail, including raw material preparation, reaction process, post-treatment and other steps.

2. raw material preparation

The manufacture of epoxidized soybean oil needs to use soybean oil, hydrogen peroxide and acid catalyst and other raw materials. Among them, soybean oil should be food grade, the concentration of hydrogen peroxide is generally between 30% and 35%, and sulfuric acid or phosphoric acid is commonly used as acid catalyst.

3. reaction process

1. Acid catalytic oxidation reaction

Soybean oil and acid catalyst mixed, heated to a certain temperature, adding hydrogen peroxide oxidation reaction. In this process, hydrogen peroxide will decompose to produce oxygen and free radicals, which will trigger the oxidation of the double bonds of unsaturated fatty acids in soybean oil to generate peroxides and hydroperoxides.

2. Epoxidation
Epoxidized soybean oil is generated by epoxidation of unsaturated fatty acid double bonds in soybean oil
peroxide and hydroperoxide. This reaction needs to be carried out at a certain temperature and pressure to ensure the smooth progress of the reaction.

4. post-treatment
After the
reaction is completed, the product needs to be post-treated, including removing the remaining acid catalyst, hydrogen peroxide, moisture and other impurities. A common method is to add an alkaline absorbent to neutralize the remaining acid, and then separate the epoxidized soybean oil by distillation or extraction.
Precautions for
5.

1. During the reaction process, it is necessary to strictly control the temperature and pressure to ensure the smooth progress of the reaction and the quality of the product.

2. The amount of acid catalyst needs to be properly controlled, too much will lead to equipment corrosion and product quality decline, too little will affect the reaction.

3. hydrogen peroxide addition speed also need to control the appropriate, too fast will lead to too intense reaction, too slow will affect the reaction efficiency.

6. Conclusion The manufacturing method of

epoxidized soybean oil includes the steps of raw material preparation, reaction process and post-treatment, and the operating conditions and parameters of each step need to be strictly controlled to ensure the quality and yield of the product. At the same time, it is necessary to pay attention to safety production and environmental protection requirements to ensure the sustainability and economy of the production process.

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