二甲醚具有优良的燃料性能,动力性能好,优良的压缩性,非常适用于压燃式发动机,因此是替代柴油的较好选择。现在代替石油的车用新能源只能从煤化工和生物能源这两个领域去寻找。玉米和纤维素燃料都不是好的选择,未来随着石油的枯竭,选择二甲醚作为车用燃料是较好的选择。比较了二甲醚的生产技术路线,介绍了我国二甲醚的生产及市场应用情况,指出了发展二甲醚替代能源的障碍。 Dimethyl ether has excellent fuel performance, good dynamic performance and excellent compressibility. It is very suitable for compression ignition engines and is therefore a good alternative to diesel. Now replace the oil with new energy vehicles can only be from the two areas of coal chemical and bio-energy to find. Corn and cellulose fuel are not a good choice, the future with the depletion of oil, choose dimethyl ether as a vehicle fuel is a better choice. The technical route of DME was compared. The production and market application of DME in China were introduced. The obstacles to the development of DME for alternative energy were pointed out.