Renewable Ethylene Oxide & Glycol
Scientific Design’s fully integrated Ethanol-to-Ethylene Oxide/Ethylene Glycols Process is a green alternative to using petroleum-based ethylene. By integrating the ethanol dehydration unit into the EO/EG process the overall capital costs are significantly reduced. Moreover, the process is designed to take advantage of unique heat integration opportunities.
The first commercial plant using this integrated technology was started up in 1989 in India and is currently producing green monoethylene glycol used as the bio-renewable component of partially bio-based PET. Scientific Design’s success in licensing its green EO/EG process has continued with a number of new plants coming on stream over the next few years.
Process Description: Ethanol feed is catalytically dehydrated to ethylene over Scientific Design’s SynDol® Catalyst. The reactor effluent is cooled, compressed and combined with oxygen to produce EO in the multi-tubular catalytic EO reactor. EO produced in the reactor can be separated to high quality purified EO and/or further processed to produce fiber-grade mono-ethylene glycol (MEG) as well as di- and tri-ethylene glycols (DEG, TEG).