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The present work describes a mathematical modelling approach for the separation processes of components contained in a gaseous mixture through gas-solid exchange. A general description of the different materials utilized in gas-solid exchange together with the adsorption kinetics relative to the various mechanisms is discussed. A general mathematical model is presented from which the gas-chromatography equation and the theory of moments are deduced. The former permits the evaluation of the adsorption capacity of the materials utilized as the solid phase; by means of the theory of moments it is possible to calculate the adsorption constants (including the adsorption heat) and the transport kinetic parameters. In successive chapters the gaseous mixture separation processes utilized on an industrial scale are presented and discussed, namely: - PSA (Pressure Swing Adsorption) - PSPP (Pressure Swing Parametric Pumping). - TSA (Temperature Swing Adsorption). In the appendices the method of calculation of the diffusion coefficients for the components of a gaseous mixture is presented as well as the classical theory of the gas chromatography which leads to an equation corresponding to that deduced by the general mathematical model.

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Authors: FACCHINI A, Politecnico di Milano, Milano (IT);MALARA C, Politecnico di Milano, Milano (IT);RICAPITO I, Politecnico di Milano, Milano (IT);VIOLA A, Università di Cagliari (IT)
Bibliographic Reference: EUR 12409 IT (1989) MF, 109 pp., ECU 8, blow-up copy ECU 13.75
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