Abstract
Multicomponent adsorption equilibrium data are essential for the reliable design of processes and equipment for gas separation by adsorption. We discuss techniques for the measurement and analysis of multicomponent adsorption equilibrium data, and present a comprehensive set of equilibrium data for the adsorption of oxygen and nitrogen on 5A-zeolite.
Highlights
Bulk gas separation by Pressure Swing Adsorption (PSA)
Hartzog and Sircar[3] have shown that the accuracy of simulator results depends heavily upon the accuracy of the multicomponent equilibrium data input, especially when stringent product specifications are imposed]. They have concluded that the representation of the multicomponent adsorption equilibrium must be accurate to within 2% in order to obtain accurate simulation results
The goal of our work was to investigate the procedures necessary to obtain a complete set of accurate multicomponent adsorption data. Toward this aim: I) extensive pure-component data were collected; 2) multicomponent data were collected in two different laboratories using two different techniques; 3) the pure and multicomponent data were collected at two temperatures and over wide ranges of composition and pressure, including high pressures; and 4) thermodynamic consistency tests were performed on all the data
Summary
Bulk gas separation by Pressure Swing Adsorption (PSA) Hartzog and Sircar[3] have shown that the accuracy of simulator results depends heavily upon the accuracy of the multicomponent equilibrium data input, especially when stringent product specifications are imposed]. The goal of our work was to investigate the procedures necessary to obtain a complete set of accurate multicomponent adsorption data Toward this aim: I) extensive pure-component data were collected; 2) multicomponent data were collected in two different laboratories using two different techniques; 3) the pure and multicomponent data were collected at two temperatures and over wide ranges of composition and pressure, including high pressures; and 4) thermodynamic consistency tests were performed on all the data. The purpose of this paper is to analyze techniques for measuring multicomponent adsorption equilibria, present useful methods for evaluating the resulting data, describe the trends of mUlticomponent adsorption equilibria, and make available an evaluated set of adsorption equilibrium data for use in the development and testing of adsorption equilibrium models
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