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首页> 外文期刊>Environmental Science & Technology >Modeling The Heat And Mass Transfers In Temperature-swing Adsorption Of Volatile Organic Compounds Onto Activated Carbons
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Modeling The Heat And Mass Transfers In Temperature-swing Adsorption Of Volatile Organic Compounds Onto Activated Carbons

机译：模拟挥发性有机化合物在活性炭上的变温吸附中的传热和传质

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摘要

A theoretical model was built to simulate the adsorption of volatile organic compounds (VOCs) onto activated carbons in a fixed bed. This model was validated on a set of experimental data obtained for the adsorption of acetone, ethyl formate, and dichloromethane onto five commercial activated carbons. The influence of operating conditions was modeled with various VOC contents at the inlet of the adsorber and superficial velocities of the gas-phase from 0.14to 0.28 m.s~(-1). Breakthrough times and maximum temperature rises were computed with a coefficient of determination of 0.988 and 0.901, respectively. The simulation was then extended to the adsorption of mixtures of VOCs. From the comparison of simulation and experimental results, the advantage of accounting for dispersions of heat and mass is shown and the importance in taking into account the temperature effect on the equilibrium data is demonstrated.
机译：建立了理论模型来模拟固定床中挥发性有机化合物（VOC）在活性炭上的吸附。该模型已通过一组将丙酮，甲酸乙酯和二氯甲烷吸附到五个商用活性炭上的实验数据进行了验证。利用吸附器入口的各种VOC含量和气相的表观速度从0.14至0.28 m.s〜（-1）来模拟操作条件的影响。计算的突破时间和最大温升分别为0.988和0.901。然后将模拟扩展到VOC混合物的吸附。通过模拟和实验结果的比较，显示了考虑热量和质量分散的优势，并说明了考虑温度对平衡数据的影响的重要性。

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