Recently, Sichuan Dakite Chemical Technology Co., Ltd. has made a breakthrough by developing a cation-based liquid catalytic reaction technology for the production of dimethyl ether (DME). This advanced process 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 existing DME production industry. The technology has been officially recognized by the Sichuan Provincial Department of Science and Technology, highlighting its innovation and practical value.
Dimethyl ether is a versatile chemical compound with multiple applications. It serves as an important raw material in the chemical industry, a clean fuel, and a fuel additive. Additionally, it can act as an intermediate for gasoline and olefins, and is considered an ideal alternative to diesel or LPG. Beyond transportation, DME is also widely used in pharmaceuticals, pesticides, and other industrial sectors, offering promising market potential.
With the global shortage of fossil fuels becoming more pronounced, the demand for DME as a feedstock for gas, fuel oil, and refrigerants has grown significantly. Both domestic and international industries have shown increasing interest in developing and constructing DME production facilities. In response to the limitations of traditional gas-phase dehydration methods, Dakite Chemical opted for a cationic liquid catalyst and a "liquid-liquid-gas" process route. This approach led to the development of a novel liquid-phase catalytic process for DME production.
The economic benefits of this technology are impressive. Producing one ton of DME requires only 1.42 tons of methanol, and the cost of setting up a 10,000-ton production facility is approximately 5 million yuan. These figures demonstrate the technology's efficiency and cost-effectiveness.
Moreover, the process exhibits excellent resistance to corrosion. By first combining the reactants and catalyst into a low-corrosive intermediate, the actual reaction occurs within this stable phase. As the intermediate dominates the entire reaction process, the overall corrosiveness is significantly reduced. Practical tests conducted by many manufacturers have confirmed that as long as the formulation 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 efficient but also safer and more sustainable.
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