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[Chemical Knowledge]：The production and manufacturing method and process flow of 99.5% of benzyl chloride.

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Benzyl chloride is an important organic chemical raw material, which is widely used in medicine, pesticide, spice and other fields. The following is the production method of 99.5% benzyl chloride:

1. raw material preparation

The main raw materials for the production of benzyl chloride are benzene and chlorine gas. In order to ensure the purity and yield of the product, it is necessary to select high quality raw materials and ensure that the specifications of the raw materials meet the production requirements.

2. reaction equipment

benzyl chloride production needs to use special reaction equipment, the general choice of stainless steel reactor. The reactor should have the functions of heating, cooling, stirring and liquid level control to ensure the smooth progress of the reaction.

3. Production Process

1. Feeding

Benzene is added to the reactor, stirring is started, and chlorine gas is introduced at the same time. During the feeding process, the feeding speed should be controlled to avoid excessive reaction.

2. reaction

after the completion of the feeding, maintain a certain temperature and pressure, so that benzene and chlorine fully react. During the reaction, pay close attention to the changes of temperature and pressure, and adjust the process parameters in time.

3. Cooling

When the reaction is completed, the chlorine gas is stopped and the reaction solution is cooled to room temperature. Keep stirring during the cooling process to prevent the material from settling.

4. Separation and

The reaction solution was poured into a separatory funnel and allowed to stand and separate layers. The upper layer is benzyl chloride and the lower layer is wastewater. During the separation process, attention should be paid to avoid mixing impurities.

5. Refining

The separated benzyl chloride is refined to remove impurities therefrom. As the purification method, a method such as distillation or crystallization can be employed.

4. precautions

1. benzyl chloride production process involves chlorine and other toxic and harmful gases, need to strictly abide by the safety procedures to ensure production safety.

2. In the production process, pay close attention to the changes of reaction temperature and pressure, and adjust the process parameters in time to ensure the quality and yield of the product.

3. During the separation and refining process, attention should be paid to avoid mixing impurities to ensure the purity of the product.

In short, the 99.5% benzyl chloride manufacturing method needs to strictly abide by the production process and operating procedures to ensure product quality and production safety.

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