Separation of methanol-chloroform mixture using pressure-swing distillation: Modeling and optimization

Galanido, Russel J.; Kim, Dong Sun; Cho, Jungho

doi:10.1007/s11814-020-0505-6

Cited by 7 publications

(1 citation statement)

References 16 publications

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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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