Abstract
A numerically solved reaction rate/kinetic model for CO2 removal from a CO2/N2 gas mixture into novel reactive 1-dimethylamino-2-propanol (1DMA2P) solution in a gas–liquid membrane contactor was constructed. The model is assembled by considering the main transport phenomena and all possible reactions. The validated model was applied to investigate the transport phenomena in the different sides of membrane. The impact of main operation parameters on the performance of HFMC were evaluated. The influence of co- and counter-current operational modes on the absorption process was analyzed. The sensitivity analysis under moderate conditions indicated that the mass transfer resistance of gas phase is dominant with respect to liquid phase. Enhancing the liquid temperature, solvent circulation velocity, 1DMA2P concentration and also decreasing gas stream velocity increase the CO2 absorption. The CO2 removal using conventional and alternative amines were analyzed and compared. It is observed that due to high capacity of 1DMA2P for CO2 capture and its low regeneration heat, it could be considered as one of the efficient solvent for CO2 removal.
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