First domestic 200,000-ton acetic acid ethanol plant officially started

On April 16th, the first set of 200,000-ton-per-year acetic acid esterification hydrogenation to ethanol industrial demonstration unit was established in Southwest China Chemical Research and Design Institute's own patented technology, and its partner Henan Shunda Chemical Technology Co., Ltd. officially started construction. The project can not only replace the traditional food fermentation ethanol route, but also can extend the acetic acid industry chain to solve the problem of excess production of acetic acid, to provide new support for the acetic acid industry.

The project adopts the route of esterification and hydrogenation of acetic acid. No corrosive substances are generated in the reaction process, and the equipment requires low material and investment. At the same time, the project team developed a non-precious metal catalyst with low cost, good activity, excellent performance, a conversion rate of up to 97%, and a selectivity of more than 98% for ethanol. In addition, the production device can obtain acetate and ethanol products at the same time, which not only realizes the diversification of products, but also the ethanol product reaches the fuel addition standard (absolute ethanol).

According to reports, Southwest Institute began research and development of acetic esterification hydrogenation to ethanol in 2008. It has completed small-scale trials, single-tube trials and pilot tests, and developed a new acetate hydrogenation catalyst to explore the best acetic acid. Ester hydrogenation process conditions, and apply for six national invention patents, the formation of a new process and new technology with independent intellectual property rights. It is reported that the total investment of the project is 500 million yuan, and it is expected to be completed and put into production by the end of 2013. The annual sales income after the project is put into production will be 1.3 billion yuan, and the annual profit will be nearly 70 million yuan.

At present, China's chemical industry consumes about 3 million tons of industrial-grade ethanol each year, and the annual growth rate of market demand is 8% to 10%.

In 2011, China's fuel ethanol consumption was 1.8 million tons. According to relevant national plans, China's fuel ethanol utilization will reach 10 million tons by 2020.

In addition, China has now become the largest producer of acetic acid . In 2011, China's acetic acid production capacity exceeded 7 million tons, acetic acid production was 4.25 million tons, the average operating rate of acetic acid plants was only 60%, and apparent consumption was 3.56 million tons. It is estimated that by 2015, China's acetic acid production capacity will exceed 10 million tons. At that time, the consumption demand of acetic acid will reach 5.38 million tons, and consumption will still be mainly concentrated in poly(terephthalic acid, vinyl acetate, acetate, chloroacetic acid, diketene, pesticides, In the fields of pharmaceutical intermediates and other fields, the contradiction between excessive growth of production capacity and lagging behind in demand will be more prominent, and the emergence of the process of acetic esterification hydrogenation to ethanol can be alleviated.

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