Packing characterization for post combustion CO2 capture: mass transfer model development

by Wang, Chao; Perry, Micah; Seibert, Frank; Rochelle, Gary

12TH INTERNATIONAL CONFERENCE ON GREENHOUSE GAS CONTROL TECHNOLOGIES, GHGT-12, 63, pg 1727-1744

Three mass transfer properties: the effective area (a(e)), liquid film and gas film mass transfer coefficients (k(L) and k(G)) are measured consistently for eleven packings with different surface area and corrugation angle. The effective area and liquid film mass transfer coefficient increases with liquid velocity while gas film mass transfer coefficient increases with gas velocity. The fractional effective area decreases with surface area and barely changes with corrugation angle. k(L) and k(G) increase as surface area increases or corrugation angle decreases. A new concept-mixing point density is proposed to represent the packing geometry influence on k(L) and k(G). Correlations for a(e), k(L), and k(G) are developed including effects of gas and liquid rates and packing geometry. (C) 2014 Published by Elsevier Ltd.

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