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Manufacturing Method
of Dimethyldichlorosilane Dimethyldichlorosilane (CH3)2SiCl2 is an important organic silicon compound, which is widely used in the field of chemical production raw materials. This article will introduce the manufacturing method of dimethyldichlorosilane, including raw material preparation, reaction process, post-treatment and precautions.
1. Raw material preparation
1. Methanol: CH3OH, colorless transparent liquid, pungent odor, used as one of the reactants.
2. Silicon powder: Si, gray or black powder, insoluble in water, used as one of the reactants.
3. Copper chloride: CuCl2, yellow-green to brown crystalline powder, used as catalyst.
2. reaction process
1. methanol and silicon powder in accordance with a certain proportion of the reaction kettle, mixed evenly.
2. Under the condition of stirring, gradually add the copper chloride catalyst, and control the appropriate addition rate to keep the reaction temperature stable.
3. Hydrogen and hydrogen chloride gas will be produced during the reaction, which need to be extracted through the pipeline and absorbed.
4. After completion of the reaction, the reaction solution was cooled and filtered to remove solid impurities.
5. The dimethyldichlorosilane product is isolated by distillation.
3. post-treatment
1. The distillation residue is treated to recover useful substances.
2. The hydrogen and hydrogen chloride gas after the absorption treatment are discharged or further utilized.
3. Clean and maintain the production equipment to ensure the smooth progress of the next production.
Precautions for
4.
1. Strictly control the quality and proportion of raw materials to ensure the smooth progress of the reaction.
2. The addition rate of the catalyst should be appropriate to avoid excessive reaction or by-products.
3. Properly handle the generated hydrogen and hydrogen chloride gas to prevent environmental pollution.
4. In the production process, the equipment should be kept in good operation, and the equipment should be maintained and overhauled in time.
Through the above steps, we can produce dimethyldichlorosilane. This compound is widely used in the field of chemical production raw materials, so mastering its manufacturing method is of great significance for improving production efficiency and reducing costs. At the same time, it is necessary to pay attention to safety, environmental protection and other issues in the production process to ensure the smooth progress of production.
In short, the manufacturing method of dimethyldichlorosilane involves multiple links and precautions, and needs to be carried out in strict accordance with the operating procedures. Through reasonable raw material preparation, reaction process control, post-treatment and precautions, we can produce high-quality dimethyldichlorosilane products and provide a stable supply of raw materials for chemical production.