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Numerical simulation of CO2 diffusion and reaction into aqueous solutions of different absorbents
Antonio Comite,Camilla Costa,Renzo Di Felice,Paolo Pagliai,Dario Vitiello 한국화학공학회 2015 Korean Journal of Chemical Engineering Vol.32 No.2
A numerical model comprising a system of partial differential equations was set up to describe the diffusionand reaction of carbon dioxide into aqueous solutions of different absorbents. The solution of the governing equationwas a function of the physical and chemical parameters involved, such as Henry constant, diffusion coefficientsand reaction rates. Although these parameters have been estimated and reported in literature, uncertainty still existsabout their reliability. Comparison between numerical predictions and experimental values from specifically designedexperiments shows them to be in good agreement, thus increasing the confidence on the correctness of these parameters,which form then the basis for a proper design of industrial units.