Stability analysis of a pressure swing adsorption process
BÉCHAUD, Céline
Transferts, écoulements, fluides, énergétique [TREFLE]
Institut de Mathématiques de Bordeaux [IMB]
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Transferts, écoulements, fluides, énergétique [TREFLE]
Institut de Mathématiques de Bordeaux [IMB]
BÉCHAUD, Céline
Transferts, écoulements, fluides, énergétique [TREFLE]
Institut de Mathématiques de Bordeaux [IMB]
< Reduce
Transferts, écoulements, fluides, énergétique [TREFLE]
Institut de Mathématiques de Bordeaux [IMB]
Language
en
Article de revue
This item was published in
Chemical Engineering Science. 2001-05, vol. 56, n° 10, p. 3123-3137
Elsevier
English Abstract
Hydrodynamic stability during advection combined with di usion and adsorption of a binary gas mixture in porous media is considered in this work. The general framework is that of pressure swing adsorption (PSA) on beds of ...Read more >
Hydrodynamic stability during advection combined with di usion and adsorption of a binary gas mixture in porous media is considered in this work. The general framework is that of pressure swing adsorption (PSA) on beds of zeolite beads. The dispersion=adsorption problem is studied at Darcy's scale on a 1D porous column from a numerical point of view while complete time-periodic cycles are considered. The regular solution of the problem is ÿrst sought using a ÿnite volume scheme and stability analysis is performed on this time-dependent solution. While instability evidence is shown on a direct 2D numerical simulation of the problem with pressure and concentration disturbances at the entrance of the column, the stability analysis is carried out in 1D by making use of the linear amplitude equation method. Results clearly show the stability conditions which are quite di erent depending on whether pressure or concentration disturbances are considered as initial conditions or maintained as boundary conditions at column entrance.Read less <
English Keywords
Adsorption
Dispersion
Porous media
Stability
Transport processes
Zeolites
Origin
Hal imported