مهندسی شیمی ایران

مهندسی شیمی ایران

ارزیابی عملکرد اقتصادی و کنترلی آب‌زدایی اتانول با فرایند تقطیر استخراجی

نوع مقاله : مقاله پژوهشی

نویسندگان
1 کارشناسی ارشد مهندسی شیمی، دانشگاه صنعتی تبریز
2 دانشیار مهندسی شیمی، دانشگاه صنعتی تبریز
چکیده
در این پژوهش، فرایند آب‌زدایی اتانول ارزراه تقطیر استخراجی بااستفاده‌از دو حلال اتیلن‌گلیکول و گلیسرول ازمنظر اقتصادی و کنترل‌پذیری بررسی‌شده‌است. روش پژوهش، شامل شبیه‌سازی حالت پایا و دینامیکی فرایند بااستفاده‌از نرم‌افزار Aspen Plus است؛ به‌طوری‌که ابتدا بااستفاده‌از شبیه‌سازی پایا مشخصه‌های طراحی برج‌های تقطیر استخراجی تعیین شده و سپس، با اجرای شبیه‌سازی دینامیکی حلقه‌بسته، عملکرد کنترل سامانه و حساسیت آن نسبت‌به اغتشاشات ورودی ارزیابی‌شده‌است. به‌علاوه، با محاسبۀ عدد وضعیت به‌عنوان شاخص کنترل‌پذیری و براورد هزینۀ سالانۀ کل (TAC) به‌عنوان شاخص اقتصادی، اثرات انتخاب حلال بر عملکرد سامانه به‌طور هم‌زمان تحلیل‌شده‌است. نتایج حاصل، نشان‌می‌دهد که باوجود افزایش فراریت نسبی حاصل‌از استفاده‌از گلیسرول، حلال اتیلن‌گلیکول به‌دلیل هزینه‌های عملیاتی کمتر و کنترل‌پذیری بهتر دربرابر اغتشاشات ترکیب خوراک، گزینۀ بهینه‌تری در فرایند آب‌زدایی اتانول محسوب‌می‌شود.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Analysis of Economic and Control Performance of Ethanol Dehydration Using Extractive Distillation

نویسندگان English

R. Jelibaghou Delazy 1
H. Ahmadian Behrooz 2
1 MSc. of Chemical Engineering, Tabriz University of Technology
2 Associate Professor of Chemical Engineering, Tabriz University of Technology
چکیده English

In this research, the ethanol dehydration process via extractive distillation is investigated using ethylene glycol and glycerol from both economic and controllability perspectives. The research method involves steady-state and dynamic simulations using Aspen Plus software; first, the steady-state simulation is employed to determine the design parameters of the extractive distillation columns, and then closed-loop dynamic simulations are conducted to evaluate the control system’s performance and its sensitivity to disturbances. In addition, the controllability is assessed by calculating the condition number as an index, while the total annual cost (TAC) is estimated as an economic indicator.
The results show that although using glycerol yields higher relative volatility, ethylene glycol is a more optimal solvent for ethanol dehydration due to its lower operating costs and better control performance in response to feed composition disturbances.

کلیدواژه‌ها English

Extractive Distillation
Controllability
Condition Number
TAC

 

[1]        Lei, Z., Dai, C., & Chen, B. (2022). Chapter 2- Extractive distillation. In Z. Lei, C. Dai, B. Chen, & Z. Ding (Eds.), Special Distillation Processes Second Edition, 65-154). Elsevier. https://doi.org/https://
doi.org/10.1016/B978-0-12-820507-5.00003-8
[2]        Kianinia, M., & Abdoli, S. M. (2021). The design and optimization of extractive distillation for separating the acetone/n-heptane binary azeotrope mixture. ACS omega, 6(34), 22447-22453.
[3]        Rahimi, R., Alborzi, A., Sudmand, M. H., & Zivdar, M. (2012). Cognition of dividing wall columns and their effect on reducing the required energy in distillation processes. Nashriyeh-e Elmi-e Farayand-e Now, 7(38), 69-79, [In Persian].
[4]        Vázquez-Castillo, J. A., Segovia-Hernández, J. G., & Ponce-Ortega, J. M. (2015). Multiobjective optimization approach for integrating design and control in multicomponent distillation sequences. Industrial & Engineering Chemistry Research, 54(49), 12320-12330. 
[5]        Gil, I. D., Gómez, J. M., & Rodríguez, G. (2012). Control of an extractive distillation process to dehydrate ethanol using glycerol as entrainer. Computers & Chemical Engineering, 39, 129-142.
[6]        Ramos, W. B., Figueirêdo, M. F., Brito, K. D., Ciannella, S., Vasconcelos, L. G. S., & Brito, R. P. (2016). Effect of Solvent Content and Heat Integration on the Controllability of Extractive Distillation Process for Anhydrous Ethanol Production. Industrial & Engineering Chemistry Research, 55(43), 11315-11328. https://doi.org/10.1021/acs.iecr.6b03515
[7]        Wang, Y., Liang, S., Bu, G., Liu, W., Zhang, Z., & Zhu, Z. (2015). Effect of solvent flow rates on controllability of extractive distillation for separating binary azeotropic mixture. Industrial & Engineering Chemistry Research, 54(51), 12908-12919.
[8]        Kasiri, N., Zatkhahi, M., Eyvazpour, J., & Khan Af, M. (2015). Investigation of turbulence model effect on sieve tray hydraulics. Modeling in Engineering, 13(42), 79-86, [In Persian].
[9]        Cao, Y., Li, M., Wang, Y., Zhao, T., Li, X., Zhu, Z., & Wang, Y. (2016). Effect of feed temperature on economics and controllability of pressure-swing distillation for separating binary azeotrope. Chemical Engineering and Processing: Process Intensification, 110, 160-171.
[10]      Zhu, Z., Yu, M., Zhang, W., Liu, Y., Cui, P., Yang, J., Wang, Y., & Gao, J. (2019). Exploration of the effects of pressure on the controllability of extractive distillation for separating pressure-sensitive azeotropes. Separation and Purification Technology, 227, 115681.
[11]      De Figueiredo, M. F., Brito, K. D., Ramos, W. B., Sales Vasconcelos, L. G., & Brito, R. P. (2015). Effect of Solvent Content on the Separation and the Energy Consumption of Extractive Distillation Columns. Chemical Engineering Communications, 202(9), 1191-1199. https://doi.org/10.1080/00986445.2014.900053
[12]      Pan, Q., Shang, X., Li, J., Shoutao, Li, L., & Sun, L. (2019). Energy-efficient separation process and control scheme for extractive distillation of ethanol-water using deep eutectic solvent. Separation and Purification Technology, 219, 113-126.
[13]      Wang, C., Zhuang, Y., Liu, L., Zhang, L., & Du, J. (2020). Control of energy-efficient extractive distillation configurations for separating the methanol/toluene azeotrope with intermediate-boiling entrainer. Chemical Engineering and Processing, 149, 107862. https://doi.org/10.1016/j.cep.2020.107862 
[14]      Li, G., Liu, S., Yu, G., Dai, C., & Lei, Z. (2021). Extractive distillation using ionic liquids-based mixed solvents combined with dividing wall column. Separation and Purification Technology, 269, 118713. https://doi.org/10.1016/J.SEPPUR.2021.118713
[15]      Ayuso, M., Navarro, P., Moya, C., Moreno, D., Palomar, J., García, J., & Rodríguez, F. (2022). Extractive Distillation with Ionic Liquids To Separate Benzene, Toluene, and Xylene from Pyrolysis Gasoline: Process Design and Techno-Economic Comparison with the Morphylane Process. Industrial & Engineering Chemistry Research. https://doi.org/10.1021/acs.iecr.1c04363.s001
[16]      Duan, C., & Li, C. (2021). Novel energy-saving methods to improve the three-column extractive distillation process for separating ethyl acetate and ethanol using furfural. Separation and Purification Technology, 272, 118887.
[17]      Gu, Y., & Jérôme, F. (2010). Glycerol as a sustainable solvent for green chemistry. Green Chemistry, 12(7), 1127-1138.
[18]      Pagliaro, M., Ciriminna, R., Kimura, H., Rossi, M., & Della Pina, C. (2007). From glycerol to value‐added products. Angewandte Chemie International Edition, 46(24), 4434-4440.
[19]      Wang, S., Dai, Y., Ma, Z., Qi, H., Chen, Z., Shen, Y., Yang, J., Cui, P., Wang, Y., & Zhu, Z. (2021). Application of energy-saving hybrid distillation-pervaporation process for recycling organics from wastewater based on thermoeconomic and environmental analysis. Journal of Cleaner Production, 294, 126297.
[20]      Luyben, W. L. (2011). Design and control of the ethyl benzene process. AIChE journal, 57(3), 655-670.
[21]      Abdollahpour, S., Ahmadian Behrouz, H., & Fazeli, A. (2020). Optimal design of dividing wall columns - A case study of benzene, toluene, and xylene system. Iranian Chemical Engineering Journal, 19(110), 66-80, [In Persian].
[22]      Cui, P., Xing, J., Li, C., Zhou, M., Zhang, J., Dai, Y., Zhong, L., & Wang, Y. (2024). Environmental, economic and exergy analysis of separation of ternary azeotrope by variable pressure extractive distillation based on multi-objective optimization. Chinese Journal of Chemical Engineering, 65, 145-157.
[23]      Dimian, A. C., Bildea, C. S., & Kiss, A. A. (2014). Integrated design and simulation of chemical processes. Elsevier.
[24]      Luyben, W. L. (2013). Distillation design and control using Aspen simulation. John Wiley & Sons. 
[25]      Morari, M., Grimm, W., Oglesby, M., & Prosser, I. (1985). Design of resilient processing plants—VII. Design of energy management system for unstable reactors—new insights. Chemical Engineering Science, 40(2), 187-198.
[26]      Lau, H., & Jensen, K. (1985). Evaluation of changeover control policies by singular value analysis—Effects of scaling. AIChE journal, 31(1), 135-146.
[27]      Johnston, R. D., & Bartpm, G. W. (1985). Structural interaction analysis. International Journal of Control, 41(4), 1005-1013.
[28]      Fan, Z., Zhang, X., Cai, W., & Wang, F. (2013). Design and control of extraction distillation for dehydration of tetrahydrofuran. Chemical Engineering & Technology, 36(5), 829-839.
[29]      Luyben, W. L. (2008). Comparison of extractive distillation and pressure-swing distillation for acetone− methanol separation. Industrial & Engineering Chemistry Research, 47(8), 2696-2707.
[30]      Tututi-Avila, S., Jiménez-Gutiérrez, A., & Hahn, J. (2014). Control analysis of an extractive dividing-wall column used for ethanol dehydration. Chemical Engineering and Processing: Process Intensification, 82, 88-100.
[31]      Sahraei, H. (2016). Modeling and control of a
multi-input multi-output nonlinear system using soft computing. Iranian Chemical Engineering Journal, 14(83), 38-47, [In Persian].
[32]      Luyben, W. L. (2012). Practical distillation control. Springer Science & Business Media.
[33]      Arifin, S., & Chien, I.-L. (2008). Design and control of an isopropyl alcohol dehydration process via extractive distillation using dimethyl sulfoxide as an entrainer. Industrial & Engineering Chemistry Research, 47(3), 790-803.
[34]      Luyben, W. L. (2006). Evaluation of criteria for selecting temperature control trays in distillation columns. Journal of Process Control, 16(2), 115-134.
[35]      Ling, H., & Luyben, W. L. (2009). New control structure for divided-wall columns. Industrial & Engineering Chemistry Research, 48(13), 6034-6049.
[36]      Ziegler, J. G., & Nichols, N. B. (1942). Optimum settings for automatic controllers. Transactions of the American society of mechanical engineers, 64(8), 759-765.
[37]      Luyben, W. (2002). Plantwide dynamic simulators in chemical processing and control. CRC Press.