Employing Top–Bottom Recycled Reactive Distillation to the Separations of Adipic Acid and Glutaric Acid Esterifications

Yao, Xinhui; Huang, Kejin; Chen, Haisheng; Shen, Li

doi:10.1021/ie402622f

Cited by 7 publications

(8 citation statements)

References 15 publications

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“…The huge difference of relative volatility between two reactants prevents their coexistence in the liquid phase in large quantities. Under the circumstance of the most unfavorable relative volatility ranking, it is usually hard to achieve high conversion through neat operation 4, 22, so excess reactant, MeOH, is adopted.…”

Section: Reaction Kinetics and Thermodynamic Modelmentioning

confidence: 99%

“…In a traditional batch reactor, the conversion of DMA is limited by chemical equilibrium due to reversibility of the reaction. In this context, the development of efficient configurations to intensify the reaction is imperative yet still challenging till now 3–5.…”

Section: Introductionmentioning

confidence: 99%

“…Hung et al. 4 proved that the RD configuration could be well used for DMA production, but the process required a large recycle of the light component methanol with extra energy consumption. Li et al.…”

Section: Introductionmentioning

confidence: 99%

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Design and Control for the Dimethyl Adipate Process with a Side‐Reactor Column Configuration

et al. 2021

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A side‐reactor column (SRC) configuration, which integrates vacuum distillation with atmospheric reaction, was developed for dimethyl adipate (DMA) production. The sequential optimization method was applied to optimize the design parameters including side stream drawn stage, reactor numbers, and catalyst loading with total annual cost (TAC) as objective function in order to realize the economical design. The best economic performance was achieved as the result of the specific SRC configuration featuring one column with 20 stages where DMA was drawn from the 5th stage and one side‐reactor was equipped in the bottom. Moreover, a proportion‐temperature cascade control structure was successfully developed which avoids the disturbance of inlet flow rate and composition.

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Section: Reaction Kinetics and Thermodynamic Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Design and Control for the Dimethyl Adipate Process with a Side‐Reactor Column Configuration

et al. 2021

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“…In addition, they arranged the reactive section so as to strengthen the internal energy integration between the reaction operation and the separation operation involved. Recently, they introduced an external recycle flow between the two ends of the reactive distillation columns to reinforce internal mass integration and internal energy integration between the reaction operation and the separation operation involved, while from the top to bottom for exothermic reactions and from the bottom to top for endothermic reactions 140–142. HIDiC was adopted as an effective means of reusing the rejected heat to integrate the rectifying and the stripping zones 143.…”

Section: Hybrid Distillationmentioning

confidence: 99%

State‐of‐the‐Art of Advanced Distillation Technologies in China

et al. 2016

Chem Eng & Technol

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Focusing on energy conservation and process intensification, a comprehensive overview of advanced distillation technologies in the past four decades in China is presented. Novel trays, packings, and gas and liquid distributors based on the fundamentals of such technologies are described. Hybrid distillation and distillation assisted by an external force field on the basis of process intensification principles like reactive distillation, extractive distillation, Higee technology, microwaveassisted distillation, etc. are reported. Energy-saving technologies such as dividing-wall column and internally heat integrated distillation column together with some important examples regarding the industrial application of advanced distillation technologies are evaluated. As a guide to develop distillation processes, a green distillation concept is proposed. Future perspectives of distillation techniques in China are indicated.

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“…So far, a few methods have been proposed to deal with the limitations of the RDC in the separations of quaternary reversible reactions with the MURRV. The arrangement of double reactive sections at the top and bottom of the RDC can take advantage of the thermodynamic characteristics of such kinds of reacting mixtures and lead to a great improvement in system performance. , The inclusion of a top–bottom external recycle to the RDC can also make an effective use of the thermodynamic characteristics of such kinds of reacting mixtures and secure a great improvement in system performance. , Although these two strategies yield effective modifications to the configuration of the RDC, they fail to remove the necessity of a multiple-column system involving an RDC, followed by one or two CDCs, to separate the resultant quaternary reacting mixture with the MURRV. The dividing-wall technique can render such possibilities and give rise to reactive single or double dividing-wall distillation columns (R-SDWDCs or R-DDWDCs).…”

Section: Introductionmentioning

confidence: 99%

Reactive Double Dividing-Wall Distillation Columns: Structure and Performance

Zang

Zhang

Huang

et al. 2020

Ind. Eng. Chem. Res.

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The separations of quaternary reversible reactions with the most unfavorable ranking of relative volatilities (i.e., the two reactants are the lightest and heaviest components and the two products in between) require a reactive distillation column, followed by one or two conventional distillation columns. The multiple-column structure reflects not only a high energy intensity in the reaction operation and separation operation involved but also a great potential of process intensification in process development. With reference to a two-column system involving a reactive distillation column with an external recycle and a conventional distillation column (ER-RDC + CDC), a kind of reactive double dividing-wall distillation column (R-DDWDC) is derived via careful coordination and mass and thermal coupling between the ER-RDC and CDC. Closely dependent upon the magnitude of the reaction thermal effect, the left dividing wall is located either at the top or at the bottom. In addition to allowing the mass and thermal coupling between the ER-RDC and CDC, it facilitates primarily the reaction operation in the reactive section. The right dividing wall is located at the middle to fully strengthen the mass and thermal coupling not only between the ER-RDC and CDC but also between the separation operations included. The derived R-DDWDC features essentially the greatest degree of process intensification and becomes consequently the most thermodynamically efficient scheme in the separations of quaternary reversible reactions with the most unfavorable ranking of relative volatilities. The derived R-DDWDC is evaluated in terms of two examples, involving, respectively, the separations of ideal exothermic and endothermic quaternary reversible reactions with the most unfavorable ranking of relative volatilities. The derived R-DDWDC is found to be much more energy efficient than the ER-RDC + CDC, the reactive single dividing-wall distillation column, and those R-DDWDCs with different configurations. These outcomes demonstrate that the derived R-DDWDC is a much competitive alternative for the separations of quaternary reversible reactions with the most unfavorable ranking of relative volatilities. They also highlight the feasibility and effectiveness of the proposed strategy for process synthesis and design, that is, when the reaction processed is exothermic, the optimum R-DDWDC must come from one of R-DDWDC2 and R-DDWDC4; otherwise, the R-DDWDC4 remains to be the only possibility.

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Employing Top–Bottom Recycled Reactive Distillation to the Separations of Adipic Acid and Glutaric Acid Esterifications

Cited by 7 publications

References 15 publications

Design and Control for the Dimethyl Adipate Process with a Side‐Reactor Column Configuration

Design and Control for the Dimethyl Adipate Process with a Side‐Reactor Column Configuration

State‐of‐the‐Art of Advanced Distillation Technologies in China

Reactive Double Dividing-Wall Distillation Columns: Structure and Performance

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