Manufacturing method of chlorinated benzene
I. Introduction
Chlorinated benzene is an important raw material for the production of chemicals, which is widely used in the fields of medicine, pesticide, dyestuff and spice. Therefore, it is of great significance to study the manufacturing method of chlorinated benzene to improve the production efficiency, reduce the cost and improve the product quality. In this paper, we will introduce the manufacturing method of chlorinated benzene, including raw material preparation, reaction process, post-treatment and so on.
II. Raw material preparation
The manufacture of chlorinated benzene requires benzene and chlorine as raw materials. In order to ensure the smooth progress of the reaction, the raw materials need to be pre-treated in a certain way. Firstly, benzene needs to be distilled and purified to ensure that its purity meets the requirements. Secondly, chlorine needs to be dried and purified to remove the water and impurities in it.
Third, the reaction process
Chlorinated benzene is manufactured by chlorination method, i.e., benzene and chlorine gas are reacted under the action of catalyst. Commonly used catalysts are iron filings, aluminum trichloride and so on. Factors such as reaction temperature, pressure and chlorine flow need to be controlled during the reaction process to ensure the smooth progress of the reaction. At the same time, real-time monitoring of the reaction products is needed to adjust the process parameters in time to ensure product quality and yield.
Four, post-processing
After the end of the reaction, the product needs to be post-processed. Firstly, the product needs to be cooled and separated to obtain crude chlorinated benzene. Secondly, the crude chlorinated benzene needs to be refined to remove the impurities and improve the product quality. Commonly used refining methods include distillation, washing and crystallization. Finally, the refined chlorinated benzene needs to be packed and stored to ensure its quality and stability.
V. Precautions
In the manufacturing process of chlorinated benzene, the following matters need to be paid attention to:
1. Strictly control the reaction temperature and pressure to avoid side reactions and safety accidents during the reaction process.
2. Strict quality inspection and control of raw materials and products to ensure product quality and yield.
3. Strengthen the maintenance and repair of equipment to ensure the normal operation and service life of equipment.
4. Strengthen the management of production site to ensure the smooth running of the production process and the health and safety of employees.
VI.CONCLUSION
The manufacturing method of chlorinated benzene includes raw material preparation, reaction process and post-treatment. Attention needs to be paid to the control of reaction conditions, quality testing and control, equipment maintenance and repair in the manufacturing process to ensure product quality and production safety. Through the research and improvement of the manufacturing method of chlorinated benzene, it can further increase the production efficiency, reduce the cost, improve the product quality, and contribute to the development of the chemical production field.
