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Extractive distillation with salt in solvent

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2 Author(s)
Zhou, Rongqi ; Department of Chemical Engineering, Tsinghua Unisersity, Beijing 100084 ; Duan, Zhanting

Extractive distillation with salt in solvent is a new process for producing anhydrous ethand by combining the principle of “salt effecf” and some traditional extractive distillation methods. Compared with the common extractive distillation the performance of solvent is improved, the recycling amount of slovent is reduced to 1/4–1/5, and the number of theoretical plates is reduced to 1/3 Energy conamption and cost of equipment are also reduced and continuous production is realized. High efficiency and low solvent wastage rrake this technique feasible.

Published in:

Tsinghua Science and Technology  (Volume:4 ,  Issue: 2 )