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Modeling Study of Vacuum Sorption Characteristics of Carbon Dioxide on 4A Zeolite Molecular Sieves

机译：4a沸石分子筛二氧化碳真空吸附特性的模拟研究

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A model is presented to describe the isothermal adsorption of carbon dioxide (CO sub 2 ) and of nitrogen (N sub 2 ) on 4A zeolite molecular sieves under cryogenic conditions. The model is comprised of a fluid-phase mass balance representing the dynamics of gas in the bed and a one-dimensional diffusion equation representing adsorption in the solid. Cubic crystals of 4A zeolite are assumed to be spherical, and the concentration dependence of the diffusivity of the sorbate in both the gas and solid phases is considered. Numerical solution of the parabolic partial differential model equations is accomplished using orthogonal collocation in conjunction with an ordinary differential equation integrator suitable for stiff equations. 34 refs., 18 figs., 5 tabs. (ERA citation 12:047940)

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