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

Yadav, Manish Kumar (avtor), Agarwal, Saumya (avtor), Verma, Shilpi (avtor), Srivastava, Vimal Chandra (avtor), Lavrenčič Štangar, Urška (avtor), Kumar, Praveen (avtor)

Producing anhydrous ethanol through ethanol dehydration is challenging due to the formation of an ethanol-water 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.

• Jezik: Angleški jezik
• Ključne besede: simulation, extractive distillation, salt effect, absolute alcohol, calcium chloride salt
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FKKT - Fakulteta za kemijo in kemijsko tehnologijo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2025
• Št. strani: Str. 1-8
• Številčenje: Vol. 15, art.102267
• PID: 20.500.12556/RUL-168809
• UDK: 542.48
• ISSN pri članku: 2211-7156
• DOI: 10.1016/j.rechem.2025.102267
• COBISS.SI-ID: 234286083
• Datum objave v RUL: 25.04.2025

Gradivo je del revije

• Naslov: Results in chemistry
• Založnik: Elsevier B.V.
• ISSN: 2211-7156
• COBISS.SI-ID: 56332803

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: simulacija, ekstraktivna destilacija, učinek soli, absolutni alkohol, kalcijev klorid

Projekti

• Financer: ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
• Številka projekta: P1-0134
• Naslov: Kemija za trajnostni razvoj