According to the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, on April 28, the 30000 ton/year acetic acid hydrogenation ethanol industrial demonstration device designed and constructed by China Wuhuan engineering company, using the Institute's catalytic technology and molecular sieve membrane dehydration technology, was successfully started up and operated smoothly in Jiangsu Thorpe (Group) Co., Ltd. As of the early morning of May 6, the unit had operated stably for 8 consecutive days, and the purity of absolute ethanol produced by the unit reached 99.6%, higher than the national standard of industrial ethanol in China
since 2008, with domestic enterprises gradually mastering the relevant technology of acetic acid production, acetic acid has become an important coal chemical product in China. With the rapid development of the industry, the utilization prospect of plastics in automobiles will be more and more broad. Acetic acid production capacity is rapidly surplus, and the price is depressed. China's acetic acid production capacity has exceeded 10 million tons per year, while the traditional downstream industrial chain of acetic acid is weak, and the downstream demand for acetate, vinyl acetate, terephthalic acid and acetic anhydride grows slowly, so it is urgent to expand new downstream products. With the progress of technology and the development of market situation, hydrogenation of acetic acid to ethanol has become one of the options
ethanol is not only a basic organic chemical raw material and an important solvent, but also an ideal vehicle fuel and additive with high octane number. With the improvement of environmental quality requirements, developing alcohol fuels and adding ethanol to gasoline have become one of the main ways to improve automotive fuels. The technology of producing ethanol from coal through acetic acid hydrogenation instead of the traditional grain fermentation route will be of great strategic significance to reduce China's industrial consumption of grain and alleviate the contradiction between the shortage of oil resources, ensure China's energy security, increase the shipping capacity of the Atlantic region and slow down the shipment of Mines in Brazil. Hydrogenation of acetic acid to ethanol is the core unit of the technology of ethanol production from coal through methanol and acetic acid
due to the gratifying phenomenon of azeotropy between ethanol and water, since the 1980s, with the development of membrane separation technology, pervaporation and steam osmosis technology have been applied to the production of industrial absolute ethanol. The importance of pervaporation safety impact testing machine and the key of steam permeation technology is to develop a high-performance separation membrane. Molecular sieve membrane has the advantages of regular pore structure, unique selective adsorption performance, high temperature resistance and organic solvents. It is an advanced technology to realize the dehydration of ethanol aqueous solution with low energy consumption
the acetic acid hydrogenation technology demonstrated this time is an industrial technology that organically integrates the efficient acetic acid hydrogenation technology and the low-energy molecular sieve membrane dehydration technology
the industrial demonstration project of hydrogenation of acetic acid to ethanol is a sub topic of the "key technology and demonstration of clean and efficient cascade utilization of low rank coal" of the strategic leading science and technology project of the Chinese Academy of Sciences. Thorpe group is the first enterprise in China to successfully develop low-pressure carbonylation acetic acid technology with independent intellectual property rights, and is currently the largest acetic acid manufacturer in China
on the morning of May 6, Thorpe held a press conference on "the official production of 10000 ton acetic acid hydrogenation to ethanol project"