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

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The manufacturing method
of tetrachloroethane
Tetrachloroethane is an important raw material for chemical production, which is widely used in pesticides, pharmaceuticals, solvents and other fields. This article will introduce the manufacturing method of tetrachloroethane, including raw material preparation, reaction process, post-treatment and so on.

1. Raw Material Preparation

The main raw material for the manufacture of tetrachloroethane is chloroethane. Ethyl chloride is a colorless, transparent, volatile liquid with a strong pungent odor. Prior to the manufacture of tetrachloroethane, the ethyl chloride needs to be purified to ensure its quality and purity.

2. reaction process

1. chlorination reaction

In the process of manufacturing tetrachloroethane, chlorination reaction is first needed. Chloroethane is mixed with chlorine and reacted at a certain temperature and pressure to produce a mixture of dichloroethane and trichloroethane. The temperature and pressure of the chlorination reaction need to be adjusted according to the specific situation to ensure the progress of the reaction and the quality of the product.

2. Pyrolysis Reaction
The mixture of dichloroethane and trichloroethane produced by
requires further pyrolysis reaction to produce tetrachloroethane. The mixture is heated to a temperature to cause a pyrolysis reaction to produce tetrachloroethane and other by-products. The temperature and time of the pyrolysis reaction also need to be adjusted according to the actual situation to ensure the purity and yield of the product.

3. post-treatment

After completion of the reaction, the product needs to be post-treated to obtain pure tetrachloroethane. Usually, the impurities and by-products in the product are separated by distillation to obtain high purity tetrachloroethane. In the distillation process, it is necessary to adjust according to the boiling point and vapor pressure of the product to ensure the separation effect and the quality of the product.

4. Precautions

1. In the process of manufacturing tetrachloroethane, it is necessary to pay attention to safety and avoid dangerous factors such as leakage and contact with fire sources.

2. A large amount of heat will be generated during the chlorination reaction and pyrolysis reaction, and effective cooling and temperature control are required to avoid equipment damage and product quality problems.

3. In the post-processing process, it is necessary to ensure the cleanliness and tightness of the equipment to avoid product contamination and loss.

In short, the manufacturing method of tetrachloroethane requires a certain chemical reaction principle and process technology, and needs to pay attention to safety and environmental protection requirements. Only in strict accordance with the provisions of the operating procedures and requirements of manufacturing, in order to ensure the quality and purity of products, to create better economic and social benefits for enterprises.

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