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

2011; Springer Science+Business Media; Volume: 28; Issue: 3 Linguagem: Inglês

10.1590/s0104-66322011000300018

1678-4383

Tirzhá Lins Porto Dantas, F. Murilo T. Luna, Ivanildo José da Silva, A. Eurico B. Torres, Diana C. S. Azevedo, Alı́rio E. Rodrigues, Regina de Fátima Peralta Muniz Moreira,

Membrane Separation and Gas Transport

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.