Performance and Kinetics of a Solid Amine Sorbent for Carbon Dioxide Removal

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• 作者：Esmail R. Monazam ; Lawrence J. Shadle ; Ranjani Siriwardane
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2011
• 出版时间：October 5, 2011
• 年：2011
• 卷：50
• 期：19
• 页码：10989-10995
• 全文大小：869K
• 年卷期：v.50,no.19(October 5, 2011)
• ISSN：1520-5045

文摘

The kinetics of the reaction between CO₂ and amine/bentonite particle were estimated over the range of 303鈥?63 K from adsorption data obtained by TGA. The weight percent of amine, reaction temperature, and particle diameter were considered as experimental variables. The sorbent maximum or equilibrium CO₂ uptake was found to be linearly dependent on temperature; decreasing with increasing temperature when tested in a 100% CO₂ environment. Reactivity data for amine/bentonite particle with CO₂ were presented and discussed. On the basis of the isothermal TGA results, reaction order and the value of activation energy have been obtained. These kinetic parameters are similar to those reported for MEA and DEA in aqueous solutions. The kinetic model was used to predict the fractional conversion at different temperature exhibiting good agreement with experimental data.