Simulation and optimization of a modified salt extractive distillation process for the production of anhydrous ethanol

被引：0

作者：

Yadav, Manish Kumar ^{[1
]}

Agarwal, Saumya ^{[1
]}

Verma, Shilpi ^{[2
]}

Srivastava, Vimal Chandra ^{[1
]}

Stangar, Urska Lavrencic ^{[3
]}

Kumar, Praveen ^{[3
]}

机构：

[1] Indian Inst Technol Roorkee, Dept Chem Engn, Roorkee 247667, India

[2] Thapar Inst Engn & Technol, Dept Energy & Environm, Patiala 147004, Punjab, India

[3] Univ Ljubljana, Fac Chem & Chem Technol, Ljubljana 1000, Slovenia

来源：

RESULTS IN CHEMISTRY | 2025年 / 15卷

关键词：

Simulation; Extractive distillation; Salt effect; Absolute alcohol; Calcium chloride salt; VAPOR-LIQUID-EQUILIBRIUM; ALCOHOL-WATER SYSTEMS; DEHYDRATION; RECOVERY; ACETATE; DESIGN;

D O I：

10.1016/j.rechem.2025.102267

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Producing anhydrous ethanol through ethanol dehydration is challenging due to the formation of an ethanolwater azeotrope. Traditional methods use carcinogenic liquid separating agents like benzene to break this azeotrope. This study introduces a modified salt extractive distillation technique using soluble calcium chloride to produce anhydrous ethanol more safely and efficiently. We conducted simulations and optimizations of this new method, with columns operating under 80 % flooding conditions. This process demonstrated an effective energy consumption of 5.25 MJ per kg of ethanol, significantly lower than traditional methods. The innovative approach uses minimal calcium chloride and operates at reduced reflux flow rates, leading to smaller column diameters. Moreover, the energy needed for recovering the salt solution is just 4.4 % of the total energy consumption. Comparisons with existing literature show that our method's energy use is the lowest reported, marking a significant advancement in eco-friendly ethanol production.

引用

页数：8