A study of the end effect area of a rotating packed bed
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1. Research Center of the Ministry of Education for High Gravity Engineering and Technology, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029；2. College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049; 3. North China Branch of Engineering Design Co Ltd, China Petrol Group, Renqiu Hebei 062552, China
Based on the assumption that a liquid jet has momentum conservation when flowing through the end effect area of a rotating packed bed, the Navier-Stokes equation was established and simplified in order to calculate the length of the end effect area for different liquid jet velocities and rotor speeds. The calculations showed that the length of the end effect area was directly proportional to the liquid jet velocity and inversely proportional to the rotor speed. Ink marks experiments were carried out for different packing thicknesses in order to observe the capture of the liquid. Comparison of the experimental length of the end effect area with the calculation results showed a maximum deviation of 10%. A gas mixture of CO2(10%)+N2(90%)and NaOHand an aqueous solution of NaOH were employed in the experiments. Plots of rate of decarburization as a function of packing layer number were obtained. The experimental results showed that the rate of decarburization gradually reached a constant value once the thickness of the packing was larger than the length of the end effect area.
A study of the end effect area of a rotating packed bed[J]. Journal of Beijing University of Chemical Technology, 2013, 40(6): 10-15
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