摘要
In an attempt to eradicate high energy consumption in the course of ethylene glycol production,the team engaging in the ionic liquid cleanup process and energy-saving innovations at the Process Engineering Institute of CAS has developed a high-efficiency and energy-saving integrated ethylene glycol(EG)/dimethyl carbonate(DMC)
In an attempt to eradicate high energy consumption in the course of ethylene glycol production, the team engaging in the ionic liquid cleanup process and energy-saving in- novations at the Process Engineering Institute of CAS has developed a high-efficiency and energy-saving integrated ethylene glycol （EG）/dimethyl carbonate （DMC） manu- facture technology. It is learned that compared to the ex- isting direct hydration of ethylene oxide, this technology features high yield （close to 100%）, good product qual- ity （complying with the national standard for EG： GB/T 4649-2008, and provisional standard for DMC： YS/T 672-2008）, over 30% reduction in energy consumption, effec- tive utilization of CO2-containing waste gas discharged in the course of manufacturing ethylene oxide through ethylene oxidation, and flexibility in adjusting production plan in response to the market need. At present a commer- cial sideline test of 25 t/a EG has been completed, a 200 kt/a EG basic design and a feasibility study report have been prepared. The Process Engineering Institute of CAS has filed 16 invention patents including an international patent application （among which 4 patents have been au- thorized）.
