Improving the performances of a simulated-moving-bed reactor for the synthesis of methyl acetate ester by using partial port-closing strategies

Jo, Cheol Yeon; Kang, Hoe-Jong; Mun, Sungyong

doi:10.1016/j.cej.2022.134887

Cited by 1 publication

(1 citation statement)

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“…Diffusive mass transfer between a stationary phase and a liquid phase, as well as various adsorption processes, exist in many different industries, including the pharmaceutical, chemical, and food industries. Chromatographic separation processes, 1,2 adsorption columns, 3–5 coffee extraction, 6,7 and porous media washing 8 are exemplary applications. These processes typically involve homogeneous packings with a constant mean particle diameter along the axial direction.…”

Section: Introductionmentioning

confidence: 99%

Model‐based design of stratified packings for enhanced mass transfer using optimal control theory

Eppink,

Kuhn,

Briesen

2023

AIChE Journal

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Various examples show that stratified columns can improve the transport performance of particle packings. However, to date, there is no universal strategy to design these packings to yield optimal performance. This study proposes a model‐based approach for designing particle packings in which mass transfer occurs between a liquid phase and a stationary phase using optimal control theory. The primary objective is to provide a general design strategy that is applicable across different unit operations in chemical, pharmaceutical, and food applications. Optimal control is utilized to determine the optimal particle diameter as a function of the axial position within the column. We demonstrate the approach using two case studies and three different optimization criteria. Numerical results indicate that the proposed method is highly effective, for example, the solvent demand is reduced by up to . Moreover, the optimally graded packing yields a significantly sharper breakthrough curve of an adsorption column.

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