2006•Unpublished venueRequires access
Effect of feed composition on energy-saving of two-effect distillation
Peng Zhang
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Abstract
In ethanol-water system the effect of the feed composition on the energy-saving of two-effect distillations was researched by process simulation.The dual-feed flow,forward-feed flow and back-feed flow were mainly(discussed.) The results show that the energy-saving efficiency increases for dual-feed flow and back-feed flow,and lightly decreases for forward-feed flow with the increase of light components in feed;the value of the energy-saving efficiency is all of above 40% for dual-feed flow and back-feed flow,and is nearly 50% for forward-feed flow.Thus,if the feed contains nearly the equal mole fraction of light and heavy components or contains more light(components,) the dual-feed flow and back-feed flow can save more energy and if the feed contains much more heavy components,forward-feed flow is recommended.