Simulation of Pressure-swing Distillation for Separation of Ethyl Acetate-Ethanol-Water

Yang, Jing; Zhou, Menglin; Wang, Yujie; Zhang, Xi; Wu, Gang

doi:10.1088/1757-899x/274/1/012026

Cited by 6 publications

(2 citation statements)

References 12 publications

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“…Zhang et al investigated the separation of an equimolar mixture of EtOH and EtAc. They set the column pressure at 0.5 atm because this pressure allows for water as a cooling agent (18). Patil et al studied reactive distillation and pressure swing reactive distillation at vacuum pressure for ethyl acetate synthesis, and the results show a significant reduction in RD column energy requirement (19).…”

Section: Introductionmentioning

confidence: 99%

Energy-Saving Investigation of Entrainer Enhanced Vacuum Reactive Distillation for Ethyl Acetate Production

Patil¹,

Gnanasundaram²

2022

ECS Trans.

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An entrainer-assisted vacuum reactive distillation simulation is presented to synthesise high-purity ethyl acetate from acetic acid and ethanol. This process has the advantages of both heterogeneous azeotropic distillation and reactive distillation. Cyclohexane is used as an entrainer to break the water-ethanol azeotrope and extract water from the reactive part more efficiently. The feasibility of cyclohexane is evaluated using the residue curve map technique. The influence of various process parameters, such as reflux ratio, distillate to feed ratio, feed location of reactants and number of reactive stages on reboiler duty requirement, total annual cost, and purity of the product, were investigated. Comparison of EIARD and EIVRD configurations showed that EIVRD configuration showed 24.19% savings in reboiler duty per kg of product, 20% saving in total operating cost, and 6.59% saving in TAC.

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Section: Introductionmentioning

confidence: 99%

Energy-Saving Investigation of Entrainer Enhanced Vacuum Reactive Distillation for Ethyl Acetate Production

Patil¹,

Gnanasundaram²

2022

ECS Trans.

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“…Common special distillation methods are azeotropic distillation, 2-6 extractive distillation (ED) [7][8][9] and pressure-swing distillation. [10][11][12] ED is a separation method which changes the relative volatility of the original components after adding solvent. In this way, the pure compositions can be obtained at the top of the distillation column, while the entrainer and heavy compositions gather at the bottom of the column.…”

Section: Introductionmentioning

confidence: 99%

Dynamic control of heat pump assisted extractive distillation process for separation of ethyl acetate/isopropanol/water mixture

Shan

Niu

Meng

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND: Controlling the behavior of processes for the recovery of ethyl acetate and isopropanol from industrial wastewater is a hot topic. In this work, dynamic control structures of the extractive distillation process and heat pump combined with feeding preheating extractive distillation process are researched. The control performance of the proposed control structures is tested by adding feed flow and composition disturbance. In these two processes, two-point temperature control structure is first used. RESULTS:The results show that this structure can maintain product purity within a reasonable range under disturbance. Furthermore, the composition controller is used to improve control performance.CONCLUSION: The improved structure can effectively meet the requirements of product purity. The heat pump combined with feeding preheating extractive distillation process can use the same control structure as the extraction process and show good controllability. This study has a certain guiding value for the research of chemical dynamic control.

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Extractive distillation of ethyl acetate-ethanol-water ternary system using deep eutectic solvent (DES): A techno economic and energy assessment

Muqeet

Vellore

Aniya

et al. 2022

Chemical Engineering and Processing - Process Intensification

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Simulation of Pressure-swing Distillation for Separation of Ethyl Acetate-Ethanol-Water

Cited by 6 publications

References 12 publications

Energy-Saving Investigation of Entrainer Enhanced Vacuum Reactive Distillation for Ethyl Acetate Production

Energy-Saving Investigation of Entrainer Enhanced Vacuum Reactive Distillation for Ethyl Acetate Production

Dynamic control of heat pump assisted extractive distillation process for separation of ethyl acetate/isopropanol/water mixture

Extractive distillation of ethyl acetate-ethanol-water ternary system using deep eutectic solvent (DES): A techno economic and energy assessment

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