Isobutyl acetate by reactive distillation. Part III. Conceptual design, simulation and optimization

Martínez, Andrés F.; Rodríguez, Juan S.; Sánchez, Carlos; Orjuela, Álvaro; Rodríguez, Gerardo

doi:10.1016/j.cep.2020.108059

Cited by 18 publications

(2 citation statements)

References 43 publications

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“…By coupling reaction and separation, it can increase the reaction conversion rate and reduce the production cost and has been widely used in the chemical industry. At present, the research and application system of reactive distillation has been very extensive, including esterification reaction, − hydrolysis reaction, − etherification reaction, , and ketal reaction . Clarkson et al proposed a reactive distillation method to synthesize solketal.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation, Process Design, and Optimization Analysis on the Production of Solketal in the Reactive Dividing Wall Column

Liu

Cong

et al. 2021

Ind. Eng. Chem. Res.

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This paper aims at intensifying the synthesis process of solketal by the reactive dividing wall column (RDWC) through experiments and simulation optimization and proposes a high-efficiency production process of solketal. A lab-scale RDWC was set up to verify the feasibility of synthesizing solketal in the RDWC. The effects of different operating parameters, such as reflux ratio, liquid split ratio, molar ratio of acetone to glycerol, feeding method, and the mass flow rate of side stream, on the experimental process have also been demonstrated and analyzed. Furthermore, an equilibrium-stage model developed by Aspen Plus and verified through comparison with experiments was used for the following simulation to optimize and analyze the solketal synthesis process. The response surface methodology (RSM) was employed to optimize the multiobjective problem in RDWC. As a result, a novel competitive solketal synthesis process with an upper partition position RDWC was put forward, which could obtain 99.78% conversion and 99.22 wt % solketal product purity at a 2:1 molar ratio of acetone to glycerol and had a lower energy consumption per unit mass product of 2509.2 J·g–1 compared with other processes. The achievements of this research provide a new way to produce solketal and a significant guideline for the industrial applications of solketal synthesis in the reactive dividing wall column.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation, Process Design, and Optimization Analysis on the Production of Solketal in the Reactive Dividing Wall Column

Liu

Cong

et al. 2021

Ind. Eng. Chem. Res.

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“…RD systems comprise homogeneous and heterogeneous, irreversible and reversible, catalyzed reactions, and may include hydrogenation, hydrodesulfurization, esterification, and etherification reactions (Kiss et al, 2019). Studies that evaluated different intensified processes such as pervaporation, pressure swing distillation and reactive partition wall column, indicate that reactive distillation is one of the most suitable configurations in esterification systems for the production of acetates (Martínez et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of mechanical vapor recompression in the reactive distillation of the N-butanol esterification process

Rodrigues

Damasceno

Ramos

et al. 2021

RSD

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The process of producing esters is usually performed through esterification in a reactor followed by a distillation column to separate the products. However, this design limits the reagent conversion. Reactive distillation is an alternative to get around this issue as it allows greater reagent conversions in reactions limited by chemical equilibrium. It is one of the most famous process intensification techniques. On the other hand, mechanical vapor recompression has been used to recycle waste heat to improve efficiency of conventional distillation columns. In this context, this work evaluated the inclusion of a mechanical vapor recompression system in a reactive distillation process to obtain n-butyl acetate via n-butanol esterification with acetic acid. Systems with and without recompression were simulated in an Aspen Plus™ environment. The addition of recompression resulted in a reduction of 33.65% in the annual cost of the process, while not significantly affecting the purity of the desired product and the reagents’ conversion. From an environmental point of view, the mechanical vapor recompression system adoption resulted in a 12.69% reduction in CO2 emissions, contributing positively to meeting the requirements of the environmental regulations.

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Extractive Distillation of Isobutyl Alcohol and Isobutyl Acetate Using Dimethyl Sulfoxide: Process Design and Intensification

Yildirim,

Unlusu

2024

Chem Eng & Technol

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We have designed a separation process of isobutyl alcohol (52.0 mol%) and isobutyl acetate (48.0 mol%) mixture using conventional extractive distillation (ED) and extractive dividing‐wall column (E‐DWC) with the solvent dimethyl sulfoxide (DMSO). The binary mixture exhibits a minimum boiling azeotrope that is sensitive to pressure. Thermodynamic analyses have shown that the vacuum pressures work better compared to the atmospheric pressure when DMSO is the solvent. Based on the separation with a purity of 99.9 mol%, the E‐DWC process has resulted in 9.6 % and 4.8 % reductions in the total annual cost and CO2 emission rates, respectively, in comparison to the conventional method. After further intensification using the heat pump technique, the E‐DWC process with the solvent DMSO has provided more than 40.0 % reduction in energy consumption compared to the ED systems studied in the literature using the solvents butyl propionate and dimethylformamide.

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Isobutyl acetate by reactive distillation. Part III. Conceptual design, simulation and optimization

Cited by 18 publications

References 43 publications

Experimental Investigation, Process Design, and Optimization Analysis on the Production of Solketal in the Reactive Dividing Wall Column

Experimental Investigation, Process Design, and Optimization Analysis on the Production of Solketal in the Reactive Dividing Wall Column

Evaluation of mechanical vapor recompression in the reactive distillation of the N-butanol esterification process

Extractive Distillation of Isobutyl Alcohol and Isobutyl Acetate Using Dimethyl Sulfoxide: Process Design and Intensification

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