Multi-objective optimization of the intensified extractive distillation with side-reboiler for the recovery of ethyl acetate and methanol from wastewater

Yang, Ao; Ernawati, Lusi; Wang, Meng; Kong, Zong Yang; Sunarso, Jaka; Sun, Shouli; Shen, Weifeng

doi:10.1016/j.seppur.2023.123131

Cited by 22 publications

(13 citation statements)

References 45 publications

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“…Figure displays the residue curve map(s) of the azeotropic mixture containing ACN and IPA using EG and TEG as solvents under different pressures. The purple dash line in Figure represents the isovolatility line that intersects the ACN and solvent, marked as x P , which can be used to measure the efficiency of separation, as demonstrated in several existing studies. , A system where the intersection point is closer to the target component (meaning a smaller value of x P ) usually requires a low solvent flowrate, resulting in a lower TAC. The x P value of using EG at 0.35 atm (Figure b) is 61% lower than that at 1 atm (Figure a), which may explain why the previous work used 0.35 atm as the operating pressure.…”

Section: Methodsmentioning

confidence: 99%

Design and Optimization of Hybrid Reactive-Extractive Distillation for Ternary Azeotropic Separation: A Case Considering the Effect of Side Reactions

Kong

Yang

Tsai

et al. 2023

Ind. Eng. Chem. Res.

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Hybrid reactive-extractive distillation (RED) has been popular for separating azeotropic mixtures, as it combines the chemical reaction and physical azeotropic separation in a single unit operation. At least 18 studies have been published between 2020 and 2023, all of them relying on the hydration of ethylene oxide (EO) to form ethylene glycol (EG), without considering the potential side reactions that could impact the RED performance. This study shows one possible scenario where the formation of higher-level glycols during side reactions has led to significant increases in the total energy consumption and the total annual cost (TAC) by about 839 and 154%, respectively. These increases were due to the larger column size, low operating pressure, and more expensive cooling refrigerant. Hence, the performance of RED may not be as favorable as previously reported, and side reactions can significantly reduce its effectiveness. Future RED studies must consider the potential side reactions.

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Section: Methodsmentioning

confidence: 99%

Design and Optimization of Hybrid Reactive-Extractive Distillation for Ternary Azeotropic Separation: A Case Considering the Effect of Side Reactions

Kong

Yang

Tsai

et al. 2023

Ind. Eng. Chem. Res.

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“…All three configurations in this work are simulated using Aspen Plus V12.1. The operating pressure and pressure drop for all columns are set at 1.0 and 0.005 bar, respectively . The fresh feed flow rate is 100 kmol h –1 , containing 5 mol % MeOH, 5 mol % EtAC, and 90 mol % water .…”

Section: Methodsmentioning

confidence: 99%

Design and Multiobjective Optimization of a Novel Double Extractive Dividing Wall Column with a Side Reboiler Scheme for the Recovery of Ethyl Acetate and Methanol from Wastewater

Yang,

Kong,

Sun

et al. 2023

Ind. Eng. Chem. Res.

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This work presents the development of two novel intensified energy-efficient extractive distillation configurations for the separation of ethyl acetate and methanol from waste effluent while prioritizing economic, environmental, and safety performances. Departing from the typical three or four column extractive distillation process, we proposed two intensified processes that offer superior performance. Specifically, we introduced the extractive dividing wall column with a side reboiler (EDWC-SR), which combines the four columns into two, and the double EDWC-SR (DEDWC-SR), which combines the four columns into a single unit. Subsequently, multiobjective optimization and multicriteria decision making were used to obtain the optimum configurations for the three processes, i.e., base case, EDWC-SR, and DEDWC-SR. Both the EDWC-SR and DEDWC-SR gave better economic and environmental performances relative to the base case with slightly lowered safety performance. The DEDWC-SR gave the lowest total annual cost and CO 2 emission by 20.20 and 33.81%, respectively, and a higher safety index by 18%, relative to the base case.

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“…They discovered that the ED process using glycerol as an entrainer yielded favorable economic benefits. Yang et al 162 conducted a multiobjective optimization of the ED process for separating EA and methanol from wastewater using TAC as a constraint objective. By comparing the results, they identified a process with considerable economic benefits.…”

Section: ■ Dynamic Controlmentioning

confidence: 99%

Design and Multiple Performance Evaluation of Green Sustainable Process for Azeotropes Separation via Extractive Distillation

Zhong,

Cheng,

Dai

et al. 2023

ACS Sustainable Chem. Eng.

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Multicomponent liquid mixtures, particularly azeotropes, are extensively utilized in the chemical, petroleum, pharmaceutical, and other processing industries. Energy-saving and efficient separation of azeotropes holds significant value for the design and development of sustainable industrial processes. Extractive distillation (ED) has consistently played a pivotal role in azeotrope separation. We offer a broad and comprehensive review that encompasses recent progress in multiple aspects of ED, including the screening of entrainers, process design, enhancement schemes, dynamic control strategies, and environmental assessment. Initially, we delved into the application of quantum chemistry calculations and molecular dynamics simulation for screening suitable entrainers. We then elucidate the design principles and forms of two distinct types of ED processes. Subsequently, we explore the intensification mechanisms of the ED process through coupling mechanisms, such as heat integration and the combination of ED with other distillation processes. We also summarize the recent improvements in dynamic control strategies for various ED processes. Lastly, we evaluate various aspects of ED from the perspectives of environmental impact, economic viability, and exergy analysis. This study investigates the challenges, prospects, and emerging trends of ED technology for the separation of multicomponent azeotropes.

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Multi-objective optimization of the intensified extractive distillation with side-reboiler for the recovery of ethyl acetate and methanol from wastewater

Cited by 22 publications

References 45 publications

Design and Optimization of Hybrid Reactive-Extractive Distillation for Ternary Azeotropic Separation: A Case Considering the Effect of Side Reactions

Design and Optimization of Hybrid Reactive-Extractive Distillation for Ternary Azeotropic Separation: A Case Considering the Effect of Side Reactions

Design and Multiobjective Optimization of a Novel Double Extractive Dividing Wall Column with a Side Reboiler Scheme for the Recovery of Ethyl Acetate and Methanol from Wastewater

Design and Multiple Performance Evaluation of Green Sustainable Process for Azeotropes Separation via Extractive Distillation

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