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Dimethyl ether is an important chemical raw material, clean fuel and fuel additive. It can also be used as an intermediate for gasoline and olefins as well as an ideal substitute for diesel or LPG. At the same time, it is widely used in pharmaceuticals, pesticides and other industries, and has broad market prospects. . In recent years, with the increasing scarcity of fossil fuels, the use of dimethyl ether as a raw material for gas, fuel oil, and refrigerants has expanded, and domestic and foreign industries have also started an upsurge in process development and construction of dimethyl ether. In view of the defects in the gas phase dehydration process, Dakota Chemical Company chose a cationic liquid catalyst and a "liquid-liquid-gas" process route to develop a cationic liquid-phase catalytic process for the production of dimethyl ether. The use of this technology to produce one ton of dimethyl ether consumes only 1.42 tons of methanol, while the cost of establishing a 10,000-ton device is about 5 million yuan, which has significant economic benefits.
In addition, this result also has a better effect on the corrosion of the production process. The reactants and the catalyst are first combined into a small corrosive intermediate, and then reacted to produce dimethyl ether. Since this intermediate occupies almost all of the reaction process, the corrosiveness is slight. Many production companies have proved through practice that as long as the ingredients are accurate and the temperature is properly controlled, the acid mist will not be formed and the occurrence of corrosion can be well controlled.
Sichuan successfully developed a new dimethyl ether preparation process
Recently, Sichuan Dakite Chemical Technology Co., Ltd. developed a cation-based liquid catalytic reaction dimethyl ether technology, the methanol conversion rate of up to 98%, the selectivity of dimethyl ether up to 99.5%, creating an existing dimethyl ether preparation process The highest value. The technology has been identified through the results of the organization organized by Sichuan Science and Technology Department.