Recently, Sichuan Dakite Chemical Technology Co., Ltd. has made a breakthrough in the production of dimethyl ether (DME) by developing a cation-based liquid catalytic reaction technology. This innovation achieves a methanol conversion rate of up to 98% and a DME selectivity of as high as 99.5%, setting a new benchmark in the industry. The technology has been officially recognized by the Sichuan Provincial Department of Science and Technology, marking a significant milestone in the field.
Dimethyl ether is a versatile chemical compound with wide-ranging applications. It serves as an important raw material in chemical manufacturing, a clean fuel alternative, and a fuel additive. Additionally, it can act as an intermediate for producing gasoline and olefins, and it is considered an ideal replacement for diesel or LPG. Beyond energy, DME is also widely used in pharmaceuticals and pesticide industries, making it a highly promising product in the market.
With the growing scarcity of fossil fuels, the demand for DME as a raw material for gas, fuel oil, and refrigerants has surged. Both domestic and international industries are now investing heavily in process development and infrastructure for DME production. However, traditional gas-phase dehydration processes have limitations, including high energy consumption and corrosion issues. In response, Dakite Chemical chose to adopt a cationic liquid catalyst and a "liquid-liquid-gas" process route, creating a more efficient and environmentally friendly method for DME synthesis.
This advanced technology allows for the production of one ton of DME using just 1.42 tons of methanol, significantly reducing input costs. Moreover, the capital investment required for a 10,000-ton DME facility is approximately 5 million yuan, offering substantial economic benefits.
Another key advantage of this technology is its reduced corrosiveness during the production process. Instead of directly reacting methanol with a catalyst, the reactants first form a mildly corrosive intermediate, which then undergoes the reaction to produce DME. Since this intermediate dominates the entire reaction process, the overall corrosiveness is minimal. Many manufacturers have confirmed through practical application that as long as the composition is precise and temperature control is maintained, acid mist formation can be avoided, and corrosion can be effectively managed. This makes the technology not only economically viable but also safer and more sustainable for industrial use.
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