After years of hard work, China has mastered the design and operation technology of a single set of silicone monomer devices of 150,000 tons/year and above. Some production enterprises have made many years of exploration and obtained in fluidized bed design, catalyst, silicon powder and cycle control. Certain progress. The energy consumption, yield and selectivity have been significantly improved. A few enterprises have independently completed the expansion and reconstruction of the plant and achieved good operational results. Some of the device cost levels are close to those of similar foreign-funded devices in China. The catalyst system used is the same as that of foreign countries. The diameter of the fluidized bed reactor has reached 4 meters, and the selectivity of dimethyldichlorosilane is above 83%. Although the selectivity of dimethylchlorosilane still has a certain gap compared with foreign countries, the production cost of silicone monomer is still competitive by management and other means.


China's methyl chlorosilane production enterprises have increased their technical input, and have made significant progress in dimethyl dichlorosilane selectivity, contact yield, and raw material consumption. Many enterprises have increased the design capacity of fluidized bed reactors to 150,000 tons/year through technological transformation, which has greatly improved production efficiency; actively using pressurized hydrolysis of dimethyl concentrated acid, separation of hydrolyzed material loops, high boiling cracking, low New technologies and new processes such as boiling disproportionation have improved the effective utilization of raw materials and by-products.