Thermal and flow effects during adsorption in conventional, diluted and annular packed beds
作者： Witold Kwapinski , Karijm Salem , Dieter Mewes , Evangelos Tsotsas
DOI: 10.1016/J.CES.2010.04.017
关键词:
摘要: Previous investigations have shown a complex combination of thermal and flow effects during adsorption in highly loaded, narrow packed beds. Respective conditions were realized by packing relatively large zeolite particles tube (which causes wall channelling) adsorbing water vapour from air on the is exothermic). The present work extends investigation to novel column configurations with purposely altered heat generation flow—namely diluted beds, annular beds consisting coated particles. Experimental results obtained near infrared tomography are compared breakthrough experiments conventional columns numerical calculations. latter conducted non-isothermal, two-dimensional model that not only considers increase porosity velocity wall, but also expresses effective transport coefficients as functions radial coordinate. provides reasonable accuracy under for which usual plug-flow assumption questionable.
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