Iterative learning parameter estimation and design of SMB processes

Chen, Junghui; Chen, Ming‐Hui; Chan, Lester Lik Teck

doi:10.1016/j.cej.2010.04.027

Cited by 3 publications

(1 citation statement)

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“…Adsorptive separation is one of the most promising alternatives and has been widely explored in alkane isomers, − p -xylene isomers, − etc. − A simulated moving bed (SMB) as the main representative of continuous chromatography shows the advantages of high production efficiency, less organic solvent consumption, and large mass transfer force , and has been widely used in petrochemical, food, and pharmaceutical industries. − However, research on developing long-carbon-chain olefins/paraffins in the SMB separation process is rare due to the lack of systematic research on potential adsorbents and the elucidation of SMB process design …”

Section: Introductionmentioning

confidence: 99%

Systematic Study on the Simulated Moving Bed Process of 1-Octene/n-Octane Using FAU Zeolites

Lin,

Ai,

Zhang

et al. 2024

Ind. Eng. Chem. Res.

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Linear α-olefin (LAO) purification from an olefin/paraffin mixture by a simulated moving bed process is regarded as an energy-efficient alternative toward conventional distillation. However, the lack of a systematic study on the thermodynamic and kinetic adsorption behavior of promising adsorbents and the understanding of the gap between the separation performance of adsorbents and technological processes hinders the advance of the olefin/paraffin SMB process. Herein, the selective adsorption of LAOs from a binary liquid-phase 1-octene/n-octane mixture by FAU zeolites was investigated using batch adsorption and fixed bed pulse experiments. Considering the combined effect caused by the thermodynamic and kinetic factors, the octene/octane separation resolution is up to 0.286 with a mass transfer coefficient of 5.8 min −1 under 333 K at a flow rate of 4.00 mL/min. Moreover, based on the nonideal and nonequilibrium SMB mathematical model, the influences of operation parameters (t s , Q rec , Q D , Q E , and Q F ) of the SMB process on the purity and recovery of octene and octane are studied, and 99% purity octene with 99% yield could be obtained under the suitable conditions. This study from the thermodynamic and kinetic adsorption behavior of zeolites toward the ultimate technology process provides guidance for the design of octene/octane adsorbents for practical use.

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