According to the person in charge of Chenxin New Energy Co., the technology uses methanol as raw material and ionic liquid as catalyst to synthesize DMM3-8 via trioxane. The project is a key project and priority start-up project for the national “Twelfth Five-Year†Science and Technology Support Program. The researchers verified the methanol-made DMM3 through innovation, optimization, system integration and process enhancement of key engineering technologies such as process optimization of trioxane synthesis and separation and refining, process development of trioxane synthesis DMM3-8, continuous catalytic synthesis and separation. -8 technical reliability, system stability. The company cooperated with the Lanzhou Institute of Chemical Physics of the Chinese Academy of Sciences to build the first international 10,000-ton DMM3-8 industrial demonstration unit. The methanol utilization rate of the device is 85%, the conversion rate of trioxane is greater than 90%, and the selectivity of DMM3-8 is close to 50%. DMM3-8 is similar in physical properties to diesel and has good miscibility with diesel. It is not necessary to modify the engine fuel supply system for use in diesel fuel. Its cetane number is up to 76, oxygen content is 47%-50%, sulfur-free and aromatic-free, 10%-20% in diesel, can significantly reduce diesel condensation point, improve diesel combustion characteristics, improve thermal efficiency, smoke The highest level can be reduced by 80%, and the nitrogen oxides can be reduced by 50%. It is an internationally recognized new environmentally friendly diesel blending component that reduces fuel consumption and reduces smoke emissions. At the same time, DMM2, DMM3 and DMM4 are also a kind of solvent with strong solubility, and have broad application prospects. At present, diesel fuels such as cetane number improvers used in China produce sulfides and nitrogen oxides after combustion. With the improvement of oil quality and environmental protection requirements, diesel additives need to be upgraded. To this end, DMM3-8 has been developed for process routes at home and abroad. However, the results obtained so far are generally lacking in corrosion of liquid acid catalysts. The key technologies such as low activity of solid acid catalyst, complicated process, and product separation are still not available. Make a breakthrough. At present, China's transportation diesel alone exceeds 150 million tons per year. If it is added at a rate of 15%, the annual demand for DMM3-8 will exceed 22.5 million tons. It is understood that DMM3-8 consumes about 1.5 tons of methanol per ton. If large-scale production is realized, it is expected to consume nearly half of domestic methanol per year. The successful development of DMM3-8 technology has provided important technical support and effective solutions to alleviate the serious overcapacity of methanol production in China. Weight Checker,Weight Checker Machine,Industry Weight Checker,Weight Checker Control Changzhou Weibo Weighing Equipment CO .,LTD , https://www.webowtscale.com
The reporter learned from Shandong (Heze) Chenxin New Energy Company on August 15 that China's first self-developed, fully independent intellectual property rights world's first set of 10,000-ton DMM3-8 (polymethoxy dimethyl ether) device, July 26 On the day after the company successfully commissioned the test, it continued to run smoothly, and the selectivity of DMM3-8 was close to 50%. This not only marks that China has taken the lead in mastering the DMM3-8 production technology in the world, but also marks a major breakthrough in the downstream development of methanol in China, opening up a new way to resolve the excess capacity of methanol.
The world's first 10,000-ton methanol-made DMM3-8 unit was put into operation
China's methanol downstream development has made a major breakthrough, providing a new way to digest excess capacity