Jiangsu Thorpe's 30,000 tons/year acetic acid hydrogenation to ethanol project was put into operation

It was learned from the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, that on April 28, the 30,000-ton/year acetic acid hydrogenation to ethanol industrial demonstration device designed and constructed by China Wuhuan Engineering Company using the catalytic technology and molecular sieve membrane dehydration technology of the institute, In Jiangsu Thorpe (Group) Co.
, Ltd.
, a successful start-up and smooth operation
.
As of the early morning of May 6, the device has been operating stably for 8 consecutive days, and the purity of the absolute ethanol product produced by the device has reached 99.
6%, which is higher than China's national standard for industrial ethanol
.
Since 2008, as domestic enterprises have gradually mastered 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 production capacity of acetic acid is rapidly surplus, and the price is sluggish
.
The production capacity of acetic acid in China has exceeded 10 million tons per year, and the traditional downstream industrial chain of acetic acid is weak, and the downstream demand for acetate, vinyl acetate, terephthalic acid and acetic anhydride is growing slowly, and it is urgent to expand new downstream products
.
With the advancement of technology and the development of the market situation, hydrogenation of acetic acid to ethanol has become one of the choices
.
Ethanol is not only a basic organic chemical raw material and an important solvent, but also an ideal high-octane vehicle fuel and additive
.
With the improvement of environmental quality requirements, the development of alcohol fuels and the addition of ethanol to gasoline have become one of the main ways to improve automobile fuels
.
The technology of producing ethanol from coal by hydrogenation of acetic acid to replace the traditional grain fermentation route will have important strategic significance for reducing the industrial consumption of China’s grain, alleviating the contradiction of the shortage of oil resources, and ensuring China’s energy security
.
The synthesis of ethanol by hydrogenation of acetic acid is the core unit of the technology of ethanol production from coal through methanol and acetic acid
.
Due to the azeotropic phenomenon of ethanol and water, since the 1980s with the development of membrane separation technology, pervaporation and steam permeation technologies have been applied to the production of industrial absolute ethanol
.
The key to pervaporation and steam permeation technology is the development of high-performance separation membranes.
Molecular sieve membranes have the advantages of regular pore structure, unique selective adsorption performance, high temperature resistance and organic solvent resistance, and are an advanced way to realize the dehydration of low-energy ethanol aqueous solutions.
technology
.
The acetic acid hydrogenation technology demonstrated in this demonstration is an industrialized technology that organically integrates high-efficiency acetic acid hydrogenation technology and low-energy molecular sieve membrane dehydration technology
.
The industrial demonstration project of acetic acid hydrogenation to produce ethanol is a sub-project of the "Key Technologies and Demonstration of Clean and High-Efficiency Cascade Utilization of Low-Rank Coal", a strategic pilot technology special project of the Chinese Academy of Sciences
.
Thorpe Group is the first domestic enterprise to successfully develop low-pressure oxo acetic acid technology with independent intellectual property rights, and is currently the largest acetic acid producer in China
.
On the morning of May 6, Thorpe Company held a press conference on "The project of 10,000-ton grade acetic acid hydrogenation to ethanol production officially started"
.