Entropy enthalpy compensation in the SO2 absorption reaction and the optimal capture temperature range with amine alkyl siloxane as absorbent

Wang, Kai; Li, Guangzhen; Li, Yanhong; Chen, Yuan; Zhang, Ling; Zhang, Zhu; Xu, Zhiyong; Zhao, Wenbo

doi:10.1016/j.seppur.2022.122581

Cited by 6 publications

(1 citation statement)

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“…Besides, the key to improving cyclic adsorption capacity is not only to design a good adsorption process but also to select a suitable adsorbent. Tong 22 and Wang 23 conducted research to obtain the thermodynamic parameters of the absorbents and predicted the isobaric absorption capacity of dibutyl-(1,1dimethyl-3,3,3-triphenyl-disiloxanylmethyl)-amine (DDTDA) and N-butyl-N-((1,1,3-trimethy; -3,3-diphenyldisiloxaney)methyl)butan-1-amine (BTDMBA) using the reaction equilibrium thermodynamic model (RETM) and Van't Hoff equation. They also proposed an objective function to calculate the optimal absorption/desorption temperatures and the optimal cyclic adsorption capacity, which provides a method for comparing the absorption properties of absorbents.…”

Section: ■ Introductionmentioning

confidence: 99%

Adsorption Process Optimization and Adsorbent Evaluation Based on Langmuir Isotherm Model

Wang,

Wen

et al. 2023

Langmuir

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Adsorption separation is considered one of the most commonly used gas purification methods. At present, the most widely used adsorption methods are mainly pressure swing adsorption (PSA) and temperature swing adsorption (TSA). In both adsorption methods, a comprehensive understanding of the equilibrium data and the adsorption capacity of the adsorbent is essential for process design and optimization, and the adsorption isotherm can provide a powerful aid in this regard. In this study, through mathematical analysis of the Langmuir isotherm model, the optimal cyclic adsorption conditions and the optimal thermodynamic parameters (entropy change and enthalpy change) under PSA and TSA were obtained. In addition, the isotherm model can be used to predict the isobaric adsorption capacity, and the objective function was established according to the cyclic adsorption capacity and the regeneration sensible heat consumption per unit adsorption capacity to calculate the optimal adsorption/desorption temperatures and optimal cyclic adsorption capacity of various adsorbents.

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Section: ■ Introductionmentioning

confidence: 99%