1、 Principle of Thermal Oil Synthesis Process

Thermal oil is a high-temperature heat transfer medium that is widely used due to its many excellent properties. The synthesis process of thermal oil mainly includes the following steps:

1. Select reaction materials

The main raw materials used include epoxy compounds, carboxylic acids, alcohols and other organic compounds, among which epoxy compounds are the most important reaction raw materials.

2. Reaction with catalyst

React the selected reaction materials with catalysts, commonly used catalysts include hypophosphite and dimethylaminoethanol.

3. Dehydration and dehydroxylation

The product is hydroxypropyl carboxylate, which requires dehydration and dehydroxylation reactions.

4. Decarboxylation reaction

Perform decarboxylation reaction on carboxylic acid hydroxypropyl ester to obtain the final thermal oil product.

2、 Preparation method of thermal oil

The preparation methods of thermal oil mainly include the following:

1. Epoxy compound method: Reacting epoxy compounds, fatty acids, and a certain amount of solvent to prepare thermal oil.

2. Carboxylic acid method: Reacting acyl chloride with fatty acids to prepare thermal oil.

3. Alcohol acid method: The condensation reaction of carboxylic acid and alcohol is carried out to prepare thermal oil.

4. Dimethyl phosphite method: Reacting fatty acids with dimethyl phosphite to prepare thermal oil.

Among the above preparation methods, the most commonly used is the epoxy compound method, which has the advantages of fast reaction rate, high preparation efficiency, and good product purity.

3、 Precautions

1. In the preparation process of thermal oil, safety measures should be strengthened to prevent accidents such as explosions and fires.

When selecting reaction materials, it is important to choose high-quality materials and master the reaction conditions to ensure the stability and safety of the reaction system.

During the preparation of thermal oil, it is necessary to strictly control parameters such as reaction temperature and time to ensure good reactivity of the reaction system.

In summary, the synthesis process and preparation methods of thermal oil are relatively complex, but they have a wide range of practical applications. For industrial production enterprises that require the use of thermal oil, choosing the appropriate type and preparation method of thermal oil will help improve production efficiency, reduce production costs, and achieve sustainable development.

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