Modeling of the fixed - bed adsorption of carbon dioxide and a carbon dioxide - nitrogen mixture on zeolite 13X

Brazilian Journal of Chemical Engineering

T. L. P Dantas²  F. M. T Luna¹  I. J Silva Jr¹  A. E. B Torres¹  D. C. S. De Azevedo¹  A. E Rodrigues¹  R. F.p.m Moreira² 

[1] ,Federal University of Santa Catarina Department of Chemical and Food Engineering Laboratório de Energia e Meio AmbienteFlorianópolis SC ,Brazil

关键词: Adsorption;    Carbon dioxide;    Nitrogen;    Zeolite 13X;    Modeling;   

DOI  :  10.1590/S0104-66322011000300018

来源: SciELO

【 摘 要 】

In this study, the fixed - bed adsorption of carbon dioxide and a carbon dioxide - nitrogen mixture on zeolite 13X was investigated. The adsorption equilibrium and breakthrough curves were determined at different temperatures - 301 - 306 K, 323 K, 373 K and 423 K. A model based on the LDF approximation for the mass transfer, considering the energy and momentum balances, was used to describe the adsorption kinetics of carbon dioxide and a carbon dioxide - nitrogen mixture. The model acceptably reproduced all of the breakthrough curves and can be considered as adequate for designing a PSA cycle to separate carbon dioxidenitrogen mixtures.

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