Mechanism Analysis, Economic Optimization, and Environmental Assessment of Hybrid Extractive Distillation–Pervaporation Processes for Dehydration of <i>n</i>-Propanol

Wu, Yumin; Meng, Dapeng; Yang, Dong; Liu, Xingyi; Xu, Ying; Zhu, Zhaoyou; Wang, Yinglong; Gao, Jun

doi:10.1021/acssuschemeng.0c00263

Cited by 47 publications

(21 citation statements)

References 44 publications

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“…Many studies − have shown that PV modules can efficiently separate MEOH from MEOH/DMC azeotropes, in which hydrophilic membrane materials such as polyvinyl alcohol (PVA) and chitosan are selected to ensure high selectivity for MEOH. In recent years, many studies combining PV and various distillation techniques for efficient separation of liquid mixtures have been reported. − However, the process design and simulation of coupling PV and RD for enhancing GC production have not been reported.…”

Section: Introductionmentioning

confidence: 99%

Process Design, Economic Optimization, and Environmental Assessment for the Production of Glycerol Carbonate via Reactive Distillation Combined with Pervaporation

Sun

Gao

Wei

et al. 2022

Ind. Eng. Chem. Res.

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In this study, a reactive distillation (RD) coupling pervaporation (PV) process was introduced to intensify the transesterification of dimethyl carbonate (DMC) with glycerol to produce glycerol carbonate. The yield of glycerol carbonate can be increased to more than 99.5% due to the timely removal of the by-product methanol. The PV module was used to recover DMC in the azeotrope (DMC/methanol) from the RD column. In addition, another RD process using pressure swing distillation (PSD) to recover DMC was simulated as a comparison. The design variables of both processes were optimized to obtain the lowest total annual cost (TAC), and the greenhouse gas emissions of the two processes were compared. Ultimately, in comparison to the RD-PSD process, the TAC of the RD-PV process was reduced by 18.67%, and the emissions of CO2, SO2, and NO x were reduced by 29.34, 29.52, and 29.52%, respectively.

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Section: Introductionmentioning

confidence: 99%

Process Design, Economic Optimization, and Environmental Assessment for the Production of Glycerol Carbonate via Reactive Distillation Combined with Pervaporation

Sun

Gao

Wei

et al. 2022

Ind. Eng. Chem. Res.

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“…As a typical representative of static PI techniques, membrane separation is widely used in the separation of organics and the separation between organics and water. − Due to the environmental friendliness and low energy requirements, pervaporation (PV) membrane has become one of the most important membrane separation technologies. In recent years, the PV membrane-distillation hybrid configurations have been widely studied, , which involves RD, − extractive distillation, − pressure swing distillation, etc. Toth et al , developed a new generation of poly(vinyl alcohol) membrane PERVAP 1510 for methanol dehydration, which had a higher separation factor and separation index published in the open literature.…”

Section: Introductionmentioning

confidence: 99%

Evolutional Design and Plant-Wide Control for Dimethyl Ether Production by Combining Dynamic Process Intensification and Pervaporation Membranes

Liu

Gao

Liu

et al. 2022

Ind. Eng. Chem. Res.

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Dimethyl ether (DME) is one of the promising alternatives to fossil fuels. The reactive distillation (RD) dynamic intensification process for DME production was investigated in previous reports. However, there are no investigations on the control of the RD dynamic intensification process and the design of the downstream methanol recovery process. In this paper, three DME production processes comprising the conventional process, RD coupled double-effect distillation process, and hybrid membrane RD process are proposed and optimized in terms of the minimum total annual cost. It is demonstrated that the hybrid membrane RD process performs the best in terms of economy and energy efficiency. Subsequently, two control structures are presented for the RD dynamic intensification process. The results illustrate that the improved structure with a high selector performs the best in controllability. Moreover, two plant-wide control structures are established for the hybrid membrane RD process with dynamic process intensification. The results show that the improved structure with temperature−composition cascade control loops exhibits the best robust performance.

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“…Vapor–liquid equilibrium (VLE) data is used as the basic data for designing and optimizing the extractive distillation process. The selection of appropriate solvent is the key to achieve high efficiency and low energy consumption separation . The study of solvent extraction mechanism is of great significance for solvent screening and molecular design.…”

Section: Introductionmentioning

confidence: 99%

“…The selection of appropriate solvent is the key to achieve high efficiency and low energy consumption separation. 7 The study of solvent extraction mechanism is of great significance for solvent screening and molecular design. At present, there are many methods for solvent screening, such as empirical method, group contribution method, 8,9 and computer design method, 10,11 but they cannot explain the extraction mechanism of solvents from a micro perspective view.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Deep Eutectic Solvents and Organic Solvent Effects on the Separation of Ternary Azeotropes by the Experimental Study and Molecular Simulation

Qiu

Zhou

et al. 2021

ACS Sustainable Chem. Eng.

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Extractive distillation is often used to separate difficult separation systems so as to realize the recovery and utilization of resources in industry. Based on the separation of ethylene glycol (EG), isoamyl alcohol, and water, the separation of ternary azeotropic mixtures by extractive distillation was studied. The study of extraction mechanism is very important for solvent screening and molecular design. To compare the selectivity of solvents, the interaction energies between solvent–water, solvent–EG, and solvent–isoamyl alcohol were calculated by the quantum chemical method. Atoms in molecules, reduced density gradient, and electrostatic potential were used to study the microextraction mechanism of solvents in the water–EG–isoamyl alcohol system. In extractive distillation, vapor–liquid equilibrium (VLE) data is used as the basic data for designing and optimizing the process. In order to solve the problem of lack of VLE data between N,N-dimethylformamide, dimethyl sulfoxide, choline-based deep eutectic solvents, and azeotropes, the VLE experiment of the solvent and azeotrope system was carried out. In this work, the selectivity of different solvents was compared by the quantum chemical method, the microextraction mechanism of solvents was explored, and the lack of VLE experimental data was supplemented, which provided theoretical guidance for the selection and design of solvent molecules with excellent performance.

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Mechanism Analysis, Economic Optimization, and Environmental Assessment of Hybrid Extractive Distillation–Pervaporation Processes for Dehydration of n-Propanol

Cited by 47 publications

References 44 publications

Process Design, Economic Optimization, and Environmental Assessment for the Production of Glycerol Carbonate via Reactive Distillation Combined with Pervaporation

Process Design, Economic Optimization, and Environmental Assessment for the Production of Glycerol Carbonate via Reactive Distillation Combined with Pervaporation

Evolutional Design and Plant-Wide Control for Dimethyl Ether Production by Combining Dynamic Process Intensification and Pervaporation Membranes

Comparison of Deep Eutectic Solvents and Organic Solvent Effects on the Separation of Ternary Azeotropes by the Experimental Study and Molecular Simulation

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