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[Chemical Knowledge]：Production and manufacturing method and process of tetrachloroethylene

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The manufacturing method
of tetrachloroethylene
1. Introduction

tetrachloroethylene is an important chemical production raw material, widely used in plastics, rubber, coatings, medicine, pesticides and other fields. Due to its unique physical and chemical properties, the manufacturing method of tetrachloroethylene has attracted much attention. This paper will introduce the manufacturing method of tetrachloroethylene in detail, including the selection of raw materials, reaction principle, process flow, equipment selection and so on.

2. raw material selection

manufacturing tetrachloroethylene is the main raw material of vinyl chloride. Vinyl chloride can be produced by the addition reaction of ethylene and chlorine. When selecting raw materials, it is necessary to consider factors such as purity, moisture, and acidity to ensure the smooth progress of the reaction and the stability of product quality.

3. Reaction Principle

Tetrachloroethylene is produced by the polymerization of vinyl chloride. In the polymerization process, the vinyl chloride molecules generate free radicals through the action of free radical initiators, and then initiate the addition polymerization reaction of vinyl chloride molecules to generate tetrachloroethylene. Commonly used free radical initiators include benzoyl peroxide, azobisisobutyronitrile, and the like.

4. Process
The manufacturing process of
tetrachloroethylene mainly includes the following steps:

1. ingredients: add vinyl chloride and free radical initiator into the reactor according to a certain proportion.
2. Polymerization: Under appropriate temperature and pressure, the initiator decomposes to generate free radicals, which initiate the polymerization of vinyl chloride molecules.
3. Post-treatment: After the reaction, the product is separated, washed and dried to obtain pure tetrachloroethylene.

5. equipment selection

In the manufacturing process of tetrachloroethylene, it is necessary to select the appropriate reactor and post-treatment equipment. The reactor needs to have good stirring performance and temperature control performance to ensure the uniformity and stability of the reaction. The post-processing equipment needs to have functions such as separation, washing, and drying to ensure the purity and quality of the product.
Precautions for
6.

In the manufacturing process of tetrachloroethylene, the following matters need to be paid attention to:

1. Strictly control the quality and proportion of raw materials to ensure the smooth progress of the reaction and the stability of product quality.
2. Strengthen the control of reaction temperature and pressure to prevent the occurrence of side reactions and equipment damage.
3. Regular maintenance and maintenance of the equipment to ensure the normal operation and service life of the equipment.
4. Strengthen the monitoring and management of the production process to ensure the quality and safety of products.

7. conclusion

tetrachloroethylene as an important chemical production raw material, its manufacturing method involves raw material selection, reaction principle, process flow, equipment selection and other aspects. In the manufacturing process, it is necessary to strictly control the quality and proportion of raw materials, strengthen the control of reaction temperature and pressure, select appropriate reactors and post-processing equipment, and strengthen the monitoring and management of the production process to ensure product quality and safety.

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