Study on a New High Efficiency Energy-Saving Two-effects Distillation Process

As the forward feed,backward feed,dual feed double-effect distillation were not better used at the conditions of the feed temperature being higher than the bubble point,a new type of double-effect distillation system usingenricher with vapor feed was developed.The effects of the feed composition and temperature on the energy-saving efficiency of the process were researched in ethanol-water system by process simulation.The result indicates that the energy-saving efficiency up to 54%,at least 1.5%.Therefore the new type distillation processes are feasible and effective in the application of technology.