Process intensification by integration of distillation and vapor permeation or pervaporation - An academic and industrial perspective

Liu, Shun; Li, Hong; Kruber, Bettina; Skiborowski, Mirko; Gao, Xin

doi:10.1016/j.rineng.2022.100527

Cited by 16 publications

(5 citation statements)

References 133 publications

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“…159 Industrial applications of membrane-assisted distillation, focusing on azeotrope separation, are reported. 217 However, applications of MA-RD have been only investigated experimentally and in simulation. 218 For MA-RD, the membrane and the RD column are modeled independently.…”

Section: Reactive Hidicmentioning

confidence: 99%

“…The separation characteristics of membrane materials are typically studied on a case-specific basis for a given chemical system, often requiring laboratory-scale experiments for validation. 218 Consequently, the development of generic methods and model-based tools for widespread application relies heavily on precise molecular models to describe membrane separation and its integration with distillation, as emphasized by Liu et al 217 This limitation can be extended to the domain of RD. 170 Microwave-assisted reactive distillation Microwaves have the potential to improve reaction and separation performance by enhancing the relative volatility of substances, particularly, the evaporation of water is stimulated causing an instantaneous shift in equilibrium.…”

Section: Reactive Hidicmentioning

confidence: 99%

“…The separation characteristics of membrane materials are typically studied on a case‐specific basis for a given chemical system, often requiring laboratory‐scale experiments for validation 218 . Consequently, the development of generic methods and model‐based tools for widespread application relies heavily on precise molecular models to describe membrane separation and its integration with distillation, as emphasized by Liu et al 217 . This limitation can be extended to the domain of RD 170 …”

Section: Advanced Reactive Distillation Technologiesmentioning

confidence: 99%

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Conceptual methods for synthesis of reactive distillation processes: recent developments and perspectives

Kiss,

Muthia,

Pazmiño‐Mayorga

et al. 2024

J of Chemical Tech & Biotech

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Reactive distillation (RD) is a process intensification technique that offers major advantages over conventional technologies by enabling the integration of reaction and separation into a single apparatus. This integration introduces and exploits complex interaction between mass transfer, chemical reaction and hydrodynamics within an RD column; however, these complexities can hinder the adoption of reactive distillation by industry.Many approaches were developed by the scientific community to advance understanding and to expedite the initialization of RD design at the conceptual level. This paper critically discusses recent developments in conceptual methods for synthesizing RD processes. This review paper is the first to consider the range of available approaches for assessing the technical feasibility, controllability, economic viability, and sustainability, of RD units by taking into account various configurations in which RD is treated as a new unit operation, and as part of process synthesis in a different way of designing processes based on functions. The review also addresses complex configurations, such as advanced RD technologies. Special attention is paid to process modeling and simulation as well as to education. Knowledge gaps to be filled by further research are indicated.This article is protected by copyright. All rights reserved.

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Section: Reactive Hidicmentioning

confidence: 99%

Section: Reactive Hidicmentioning

confidence: 99%

Section: Advanced Reactive Distillation Technologiesmentioning

confidence: 99%

See 1 more Smart Citation

Conceptual methods for synthesis of reactive distillation processes: recent developments and perspectives

Kiss,

Muthia,

Pazmiño‐Mayorga

et al. 2024

J of Chemical Tech & Biotech

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“…Membrane separation is a new solution with the advantages of high separation efficiency and low space volume. The principle of membrane separation mainly relies on the differences in molecular sizes, rather than vapor–liquid equilibrium, so it is suitable to treat near-boiling and azeotropic mixtures. − However, the membrane separation still suffers from weaknesses, where the membrane material is still susceptible to impurities such as salts and acids in feedings. To overcome this limit, the membrane process could be combined with other techniques.…”

Section: Introductionmentioning

confidence: 99%

A Novel Internal Coupling Process of a T-type Zeolite Membrane in a Distillation Column to Separate the PM/H₂O Mixture

Fu,

Zheng,

Huang

et al. 2024

Ind. Eng. Chem. Res.

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The recovery and purification of propylene glycol monomethyl ether (PM) could significantly enhance the economic benefits of the hydrogen peroxide to propylene oxide (HPPO) reaction to produce epichlorohydrin. However, the conventional distillation technique fails to achieve this aim due to the presence of an azeotropic mixture. To address this issue, we proposed a novel coupling process to recycle the PM component, where the membrane unit was internally embedded in the column vessel to remove water before the distillate. This concept was further verified by a designed packed column operated in batch mode. By introducing a hollow fiber T-type zeolite membrane, the PM purity in the distillate was promoted by 1.0 wt % compared with the result in the blank test, suggesting that the membrane unit improved the separation effect. To further explore the synergistic effect of the membrane unit in the internal coupling process, the process simulation was established to optimize the operation parameters of internal coupling, including membrane area, coupling position, z, and feeding stage. The results indicated that the internal coupling could efficiently achieve the defined separation target, by significantly changing the vapor–liquid equilibrium profiles. By comparing with the results in external coupling, it was found that the internal coupling method yielded a higher energy efficiency, resulting in a reduction of nearly 26% in heating energy consumption and almost 60% in condensing energy load; however, this approach required a relatively larger membrane area. The above results indicated that the internal coupling was equivalent to the external couplings, and both techniques could be used to break the azeotropic limit for separation of the PM/H2O mixture.

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“…Especially the combination of pervaporation (PV) or vapor permeation (VP) with distillation have been subject to several publications 5–9 . The review articles of Lipnizki et al 2 as well as Liu et al 10 give an elaborate overview of possible applications.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic efficiency of membrane‐assisted distillation processes

2023

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Membrane processes are considered as comparably mild separation processes offering the potential for significant energy savings compared with azeotropic distillation processes. Despite higher investment and material costs, they are of particular interest for improving the energy efficiency in the chemical industry. However, energy savings of more than 20%-30% are rarely reported and even a general superiority can be disputed. To further elucidate this controversial, the current study pursues a quantitative assessment of the thermodynamic efficiency of pervaporation and vapor permeation processes with stand-alone distillation and hybrid membrane-assisted distillation processes for the separation of azeotropic mixtures. The results confirm the case-dependent potential of distillation processes to outperform membraneassisted separations in terms of energy efficiency, considering proper heat integration. Although energy efficiency is becoming significantly important, it should be considered in the context of economic performance to determine an optimal tradeoff and to select the best process alternative during conceptual process design.

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Process intensification by integration of distillation and vapor permeation or pervaporation - An academic and industrial perspective

Cited by 16 publications

References 133 publications

Conceptual methods for synthesis of reactive distillation processes: recent developments and perspectives

Conceptual methods for synthesis of reactive distillation processes: recent developments and perspectives

A Novel Internal Coupling Process of a T-type Zeolite Membrane in a Distillation Column to Separate the PM/H₂O Mixture

Thermodynamic efficiency of membrane‐assisted distillation processes

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Process intensification by integration of distillation and vapor permeation or pervaporation - An academic and industrial perspective

Cited by 16 publications

References 133 publications

Conceptual methods for synthesis of reactive distillation processes: recent developments and perspectives

Conceptual methods for synthesis of reactive distillation processes: recent developments and perspectives

A Novel Internal Coupling Process of a T-type Zeolite Membrane in a Distillation Column to Separate the PM/H2O Mixture

Thermodynamic efficiency of membrane‐assisted distillation processes

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Product

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A Novel Internal Coupling Process of a T-type Zeolite Membrane in a Distillation Column to Separate the PM/H₂O Mixture