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Charge dynamics of a methane adsorption storage system: Intraparticle diffusional effects |
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| Authors: | J P Barbosa Mota A E Rodrigues E Saatdjian D Tondeur |
| Institution: | 1. Instituto de Biologia Experimental e Tecnológica, Apartado 12, P-278, Oeiras, Portugal 2. Laboratory of Separation and Reaction Engineering, School of Engineering, University of Porto, P-4099, Porto Codex, Portugal 3. Laboratoire d'Energétique et de Mécanique Théorique et Appliquée, ENSEM, 2 avenue de la Forèt de Haye, B.P. 160, F-54504, Vandoeuvre Cedex, France 4. Laboratoire des Sciences du Génie Chimique-CNRS, ENSIC, 1 rue Grandville, B.P. 451, F-54001, Nancy Cedex, France |
| Abstract: | The charge of natural gas adsorption storage systems is studied numerically, With emphasis given to the impact on its dynamics of intraparticle diffusional resistances to mass transport. Besides adsorption kinetics and thermal effects, the simulation model takes into account both mass transport inside the adsorbent and hydrodynamics of flow through the packed bed. Numerical results are presented for change with methane of a 50 liter cylindrical reservoir, filled with hypothetical adsorbents with diffusional time constants in the range 10?3 s1 D/R p 2 ≤ ∞. and with the adsorption equilibrium curve of a commercially available activated carbon with a good adsorptive storage capacity. An attempt is made to assemble the charge histories for different values ofD/R p 2 , in a single cure by using a modilied time scale. |
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