Design Strategy for Performance Enhancement of Vertical Plate Microdistillators

Separations

article

Yosuke Muranaka¹  Taisuke Maki¹  Kosuke Nishigaya¹  Kazuhiro Mae¹ 

[1] Department of Chemical Engineering, Kyoto University

关键词: microdevice;    distillator;    HETP;    ethyl acetate;    toluene;   

DOI  :  10.3390/separations10070404

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

Microdevices have been actively implemented in chemical processes, such as in mixing and reactions. However, microseparation devices, excluding extraction devices, are still under development. In distillation, the use of microdevices has been expected to improve separation performance, as their large specific surface area enables a rapid vapor–liquid equilibrium and for large temperature gradients to be easily realized. In this study, improvements in throughput and product purities in microdistillation devices were achieved for ethyl acetate–toluene distillation. At low feedstock flow rates, ethyl acetate was successfully purified to 99.5 wt%. Although the performance decreased with increasing feedstock flow rate, by increasing the channel length, this performance decrease was suppressed even at high flow rates. The thickness of the channel was also important, and the highest performance was observed at the lowest thickness of 0.5 mm. A performance evaluation using the HETP showed that the efficiency was seven times higher than that of conventional packed column distillators.

【 授权许可】

CC BY