Modeling of Fixed‐Bed Rapid Temperature Swing Adsorber for Butanol Dehydration,Chemical Engineering & Technology

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Modeling of Fixed‐Bed Rapid Temperature Swing Adsorber for Butanol Dehydration
Chemical Engineering & Technology ( IF 1.8 ) Pub Date : 2021-03-29 , DOI: 10.1002/ceat.202000234
Mohsen Mansouri ₁ , Hamid Reza Azizi ₁ , Naimeh Setareshenas ₂

Affiliation

A fixed‐bed system of rapid temperature swing adsorption (RTSA), which uses a solid absorbent for dehydration of butanol, was studied. The packed bed was simulated using proper partial and algebraic equations which were solved by the central difference method in MATLAB software. The equilibrium relationship and fixed‐bed breakthrough curves were determined experimentally. The value of unknown parameters such as equilibrium constants, liquid film mass transfer coefficient, intraparticle diffusion coefficient, and axial diffusivity were estimated by appropriate equations. The model fitted well to experimental breakthrough data. The results proved that it would be possible to operate a complete RSTA cycle in just a few hours to allow a large quantity of organic solvent dehydrated with reasonable concentration.

中文翻译：

丁醇脱水用固定床快速摆动吸附器的建模

研究了使用固态吸收剂对丁醇进行脱水的快速变温吸附（RTSA）固定床系统。使用适当的局部和代数方程对填充床进行了模拟，这些方程通过MATLAB软件中的中心差分法求解。实验确定了平衡关系和固定床穿透曲线。通过适当的方程式估算未知参数的值，例如平衡常数，液膜传质系数，颗粒内扩散系数和轴向扩散系数。该模型非常适合实验性突破数据。结果证明，可以在短短几个小时内完成一个完整的RSTA循环，以使大量有机溶剂以合理的浓度脱水。

更新日期：2021-05-17

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