Abstract
We develope a 2D computational fluid dynamic (CFD) model in COMSOL Multiphysics® to investigate CO2 absorption in an ionic liquid ([Bmim][TCM]). Factors such as pressure (1–20 bar), temperature (278–330 K), inlet gas velocity (0.0001–1 ▪), sparger radius to column diameter ratio (0.1–0.5), and column height to diameter ratio (1–3) are investigated. A quadratic model for absorption behavior (p-value < 0.0001 and R2 > 0.98) is developed. Four sparger geometries are considered, and the optimal values for column height to diameter and sparger radius to column diameter are estimated. The maximum CO2 concentration is obtained at a pressure of 18.26 bar, temperature of 309.5 K, velocity of 0.825 ▪, the sparger radius to column diameter of 0.414, and column height to diameter of 2.5.
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