Sustainable and efficient process design for wastewater recovery of cyclohexane/isopropyl alcohol azeotrope by extractive distillation based on multi-objective genetic algorithm optimization

Wang, Kaicong; Xin, Leilei; Zhang, Yan; Qi, Jianguang; Zhu, Zhaoyou; Wang, Yinglong; Zhong, Limei; Cui, Peizhe

doi:10.1016/j.cherd.2023.12.004

Cited by 6 publications

(1 citation statement)

References 48 publications

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“…For instance, Holtbruegge et al used a membrane-assisted reactive distillation to intensify the formation of dimethyl carbonate by recycling methanol, exhibiting the potential of the membrane-distillation coupling technology. Meng et al − conducted a cost comparison between conventional processes and the distillation-membrane separation coupling process, revealing that the latter exhibited superior performance and yield while also being more environmentally friendly. Harvianto et al compared the economic performances of different distillation-membrane couplings for the separation of isopropanol/water mixture with the results by special distillations, and found that the coupling process was more cost-effective.…”

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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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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Investigation of side-stream extractive distillation for separating multi-azeotropes mixture based on multi-objective optimization

Xu,

Ding,

et al. 2024

Chemical Engineering and Processing - Process Intensification

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Novel energy-efficient design of side-stream extractive distillation process with intermediate reboiler for separating multi-azeotropic mixture based on multi-objective optimization

Xu,

Ding,

et al. 2024

Chemical Engineering Science

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Sustainable and efficient process design for wastewater recovery of cyclohexane/isopropyl alcohol azeotrope by extractive distillation based on multi-objective genetic algorithm optimization

Cited by 6 publications

References 48 publications

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

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

Investigation of side-stream extractive distillation for separating multi-azeotropes mixture based on multi-objective optimization

Novel energy-efficient design of side-stream extractive distillation process with intermediate reboiler for separating multi-azeotropic mixture based on multi-objective optimization

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Sustainable and efficient process design for wastewater recovery of cyclohexane/isopropyl alcohol azeotrope by extractive distillation based on multi-objective genetic algorithm optimization

Cited by 6 publications

References 48 publications

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

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

Investigation of side-stream extractive distillation for separating multi-azeotropes mixture based on multi-objective optimization

Novel energy-efficient design of side-stream extractive distillation process with intermediate reboiler for separating multi-azeotropic mixture based on multi-objective optimization

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Product

Resources

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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

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