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| Titel: |
TRANSIENT FLOW OF A COMPRESSIBLE FLUID THROUGH BEDS OF SOLID PARTICLES OR POROUS MATERIALS |
| Auteur: |
Rousar, I. Ditl, P. Kotsis, L. Kutics, K. |
| Verschenen in: |
Chemical engineering communications |
| Paginering: | Jaargang 112 (1992) nr. 1 pagina's 67-83 |
| Jaar: |
1992-02-01 |
| Inhoud: |
The problem of transient gas flow through porous structures is a typical one in many practical applications e.g. gas production from an underground reservoir, gas flow through the soil after an underground nuclear explosion or gas flow through a packed column. This later application is important for separation processes called Rapid Pressure Swing Adsorption (RPSA) and Pressure Swing Adsorption (PSA) where the course of the column pressurization strongly affects the mass transfer between the gas and either the adsorbent or the molecular sieve. A mathematical model for the isothermal transient flow of an ideal gas through a solid bed or porous material has been compared with experimental results both in Darcy's region and in the high velocity region. Numerical simulations have been used to study the effect of the fixed bed characteristic parameters on the pressurization course of a fixed bed column closed at one end and connected to the constant pressure vessel on the other end. In four limiting cases the results have been interpreted using simple algebraic equations. The theoretical analysis proved that for the particles being tested (dp smaller than 0ยท7 mm) the effect of macroscopic inertia forces and nonisothermal effects are negligible under the following conditions: Input pressure smaller than 600 kPa and the ratio of inlet to initial pressure smaller than 20. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 12 van 12 gevonden artikelen
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