Overview
Ethylene glycol (EG) is an important organic chemical raw material, mainly used in the production of polyester fiber. China's ethylene glycol demand is strong, consumption accounts for more than 50% of the world. Given the shortage of oil resources in our country, Due to the high cost of ethylene glycol production, combined with China's resource characteristics, Shanghai Institute has carried out research and development of catalytic technology and process to adapt to the production of ethylene glycol from coal-based non-petroleum raw materials through syngas has developed high-performance coupling, oxalate hydrogenation and nitric acid conversion catalysts, and innovated oxidation esterification reaction, dimethyl oxalate, and ethylene glycol product refining, online analysis, safety control, and other technologies large-scale research on the device has been completed, and a single series of industrial devices with a maximum scale of 200,000 tons/year has been built. The the project has applied for 204 Chinese invention patents, 12 foreign patents, and 110 authorized patents, and won the first prize in the Sinopec Science and Technology Award in 2018.
Complete technology of ethylene glycol from syngas of Sinopec
The complete technology of ethylene glycol from syngas has the characteristics of high efficiency, safety, and good product quality, and the overall technology is in the international leading position.
Ethylene glycol refining recovery is high, and the rate of excellent products is 100%, more than 5% higher than the similar technology.
Ester production; Ethylene glycol products have high purity and excellent quality and have been widely used polymerization single reactor has the highest processing capacity of its kind.
Synthesis of gas to ethylene glycol series catalyst
The catalysts for the synthesis of gas to ethylene glycol core include oxidation coupling catalyst and oxalate hydrogenation catalyst The innovation points are as follows:
A high-efficiency coupling catalyst with excellent activity and selectivity, long life, and strong hydrogen resistance was developed.
The hydrogenation catalyst with stable Cu grains, strong resistance to deep reduction, few side reactions, and excellent comprehensive properties was developed by innovating the technology of high-efficiency modification of subgroup elements and surface acidity control.
Catalyst Grades and Characteristics
In addition, the nitric acid conversion catalyst and ethylene glycol product refining catalyst have been developed, which have the characteristics of a high nitrogen recovery rate, the high recovery rate of ethylene glycol product, and good quality.
Promotion and Application
The technology was applied to the 200,000 tons/year glycol plant of fertilizer in Hubei Province, which was completed and put into operation in April 2014 and realized commercial operation.
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