Energy-saving investigation of vacuum reactive distillation for the production of ethyl acetate

IF 1 Q4 ENGINEERING, CHEMICAL Chemical Product and Process Modeling Pub Date : 2022-01-05 DOI:10.1515/cppm-2021-0060
G. Patil, N. Gnanasundaram
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引用次数: 2

Abstract

Abstract Ethyl acetate (EtAc) reactive distillation (RD) configurations often use atmospheric pressure, and this operating pressure can be reduced further to conserve energy based on the condenser cooling water temperature. Using the Aspen Plus simulator, two proposed configurations, RD column with stripper and pressure swing reactive distillation (PSRD), were simulated at lower operating pressure. The impact of RD column operating pressure on total energy usage and total annual cost (TAC) was studied. All design parameters were optimized using sequential iterative optimization procedures and sensitivity analysis to minimize the energy cost while maintaining the required product purity at 99.99%. The simulation results showed that the RD column with a stripper is better than PSRD with a saving of 23.17% in TAC and 31.53% in the specific cost of EtAc per kg. Compared to literature results, the proposed configurations have lower reboiler duty requirements and lower cost per kg of EtAc.
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真空反应精馏生产乙酸乙酯的节能研究
摘要乙酸乙酯(EtAc)反应蒸馏(RD)配置通常使用大气压,并且可以根据冷凝器冷却水温度进一步降低该操作压力以节省能量。使用Aspen Plus模拟器,在较低的操作压力下模拟了两种拟议的配置,即带汽提塔的RD塔和变压反应蒸馏(PSRD)。研究了RD塔操作压力对总能耗和年总成本(TAC)的影响。使用顺序迭代优化程序和灵敏度分析对所有设计参数进行了优化,以最大限度地降低能源成本,同时将所需产品纯度保持在99.99%。模拟结果表明,带汽提塔的RD柱优于PSRD,每公斤可节省23.17%的TAC和31.53%的EtAc比成本。与文献结果相比,所提出的配置具有较低的再沸器负荷要求和较低的每公斤EtAc的成本。
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来源期刊
Chemical Product and Process Modeling
Chemical Product and Process Modeling ENGINEERING, CHEMICAL-
CiteScore
2.10
自引率
11.10%
发文量
27
期刊介绍: Chemical Product and Process Modeling (CPPM) is a quarterly journal that publishes theoretical and applied research on product and process design modeling, simulation and optimization. Thanks to its international editorial board, the journal assembles the best papers from around the world on to cover the gap between product and process. The journal brings together chemical and process engineering researchers, practitioners, and software developers in a new forum for the international modeling and simulation community. Topics: equation oriented and modular simulation optimization technology for process and materials design, new modeling techniques shortcut modeling and design approaches performance of commercial and in-house simulation and optimization tools challenges faced in industrial product and process simulation and optimization computational fluid dynamics environmental process, food and pharmaceutical modeling topics drawn from the substantial areas of overlap between modeling and mathematics applied to chemical products and processes.
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