چکیده مقاله
Due to the azeotrope between Isopropyl alcohol and water, it is not possible to purify Isopropyl alcohol by normal distillation In the present article, two processes of Pressure Swing Distillation PSD and Extractive Distillation ED are used to break azeotrope between Isopropyl alcohol and water Via drawing a T xy mixture diagram at different pressures, it is perceived that the azeotrope point of the mixture does not shift with pressure change As a result, pressure swing distillation is not an appropriate choice for separating this mixture, but extractive distillation with DMSO solvent can bring isopropyl alcohol to 99% purity The problem is that the energy consumption of the extractive distillation process is high That's why the feed splitting method has been used in this article for the Heat integration of the process To this end, the input feed to the first column was divided into two parts and about 53% of it was preheated with the bottom product of the solvent recovery column The upper part of the feed also enters the column without changing the temperature The results reveal that the projected method can decrease the amount of both hot utility consumption and CO2 emission by almost 20%
کلیدواژهها
نویسندگان
Maedeh Koushkian
Department of chemical engineering of Pazhoohesh institute, Tehran, Iran
Farideh Bagheri Rafsanjani
Department of chemical engineering of Pazhoohesh institute, Tehran, Iran
Alireza Arabi
Department of chemical engineering of Pazhoohesh institute, Tehran, Iran
Mehdi Orouji
Department of chemical engineering of Pazhoohesh institute, Tehran, Iran
شیوه ارجاع
Koushkian, Maedeh and Bagheri Rafsanjani, Farideh and Arabi, Alireza and Orouji, Mehdi,1403,Heat integration of the separation process of minimum boiling azeotropic mixtures in order to reduce CO2 emission and reduce utility consumption,The second national and the first international conference of environmental challenges: green industry and mining ,Tehran
ارائهشده در
مجموعه مقالات دومین کنفرانس ملی و اولین کنفرانس بین المللی چالش های محیط زیست: صنعت و معدن سبز25 اردیبهشت 1403 · تهران