On August 26th, the key technology for methanol to ethanol developed by the Dalian Institute of Chemical Physics, Chinese Academy of Sciences and Shandong Union Chemicals Co., Ltd. "Methanol multiphase carbonylation to methyl acetate pilot test technology research" was adopted in Beijing by PetroChina and Identification of the results of the organization of the Chemical Industry Federation. Ethanol is not only an important solvent and chemical raw material, but also an ideal pollution-free high-octane automotive fuel and additive. The multiphase carbonylation of methanol/syngas and its hydrogenation to ethanol production line are in line with China's current industrial layout requirements, with greater technological and production cost advantages, and the methanol multiphase carbonylation to methyl acetate technology is the core of this technology route. Key technologies. The appraisal meeting was presided over by Wang Xiujiang, deputy director of the Science and Technology Department of the Petrochemical Federation. The appraisal committee of Zhao Dongyuan, director of the Fudan University, listened carefully to Ding Yunjie’s technical research report and reviewed the relevant pilot operation report, new report and other related materials. It is agreed that this technology is highly innovative and is expected to have good economic and social benefits. The technical indicators have reached the international advanced level. The research team led by Ding Yunjie developed the multi-phase methanol-based methyl acetate Ir-La based catalyst with high dispersibility, high activity, high selectivity and high stability, effectively reducing the separation cost of methanol multiphase carbonylation reaction. Loss of precious metals. Through the use of Ir-La-based catalysts and control of the conversion of methanol and the use of Hastelloy tubing in iodine-carbonylation systems, the project investment and production costs have been successfully reduced. The total space-time yield of methyl acetate and a small amount of acetic acid has reached 3- 5kg/kgcat.h, a new process for methanol multiphase carbonylation to methyl acetate was achieved. Rubber Tape Measure,Retractable Tape Measure,5M Rubber Tape Measure,Measuring Tape 3M Yucheng Weisite Measuring Tools Co., Ltd , https://www.wsttool.com