On the use of the adsorbed solution theory for designing adsorption separation units

Equilibrium theory for simulated moving bed adsorption processes

“…This means C rJr': E 1 where r : is the adsorption of pure component i at the system spreading pressure (Talu et al, 1995). Rota et al (1993) After that, the Gurvitsch isotherm will be the same as the isotherm (Eq. 1) for components 1 = 2, N .…”

“…One may have a constant selectivity system if the free energy of immersion is independent of the adsorbed phase composition (Minka and Myers, 1973). If a bulk separation SMB process is operated under vapor phase, the influence of spreading pressure on the adsorbed phase activity coefficients may sometimes be neglected (Rota et al, 1993). This means C rJr': E 1 where r : is the adsorption of pure component i at the system spreading pressure (Talu et al, 1995).…”

Adsorption Equilibria of Dimethylnaphthalene Isomers

“…Ricther et al, 1989). Several different approaches to the AST for multicomponent equilibria have been proposed to overcome this problem (Rota et al, 1993). One of these involves the modification of eq 15 by replacing the pure solvent with a mixture of arbitrary composition x i * as follows:…”

“…The same binary equilibrium data are also used for estimating the remaining parameters of the developed model, i.e., the free energy of immersion differences between the single components at the reference composition, ∆ψ i1 *, which are functions only of the temperature. As discussed by Rota et al (1993) in the context of adsorption from the gaseous phase, we can regard the ∆ψ i1 * as adjustable parameters in fitting the binary equilibrium data. It should be noted that all the free energy of immersion differences between two single components, say i and j, can be deduced from the values of the differences between the same compounds and the first one, chosen as reference:…”