Trickle bed reactors are governed by equations of flow in porous media such as Darcy's law and the conservation of mass. Our numerical method for solving these equations is based on a total-velocity splitting, sequential formulation which leads to an implicit pressure equation and a semi-implicit ma
Evaluation of trickle bed reactor models for a liquid limited reaction
β Scribed by Yuanxin Wu; Muthanna H. Al-Dahhan; Mohan R. Khadilkar; Milorad P. Dudukovic
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 319 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0009-2509
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β¦ Synopsis
The isothermal decomposition of hydrogen peroxide on a CuCr catalyst in a laboratory scale trickle bed reactor was used to test model predictions of the dependence of liquid reactant conversion on space time for different operating conditions. It is assured that the decomposition of hydrogen peroxide is a first order liquid-limited reactinn. Comparison of model predictions and experimental data indicates that both external mass transfer effects and incomplete external catalyst wetting need to be accounted for. Dudukovic's (1977) approximate model for the catalyst effectiveness factor adequately simulates both effects.
π SIMILAR VOLUMES
Two hydrodynamic models of the hquld m a trtckle-bed reactor PE and PDE model, have been consldered, and the Influence of the ldentlficatlon method on the parameter values was exammed The employed ldentlticatlon methods were the moments method, supplemented by graphlcal determmatlons on the response
Presently available liquid hold-up correlations for trickle-bed reactors are not applicable over wide ranges of system conditions. The new, improved correlation for the liquid hold-up in a trickle-bed reactor presented here, derived from fundamental considerations and a wide-ranging data base of som
## Abstract Desulfurization and hydrogenation of aromatics in diesel oil were investigated in an isothermally operated trickleβbed reactor 500 mm long and with a 19βmm ID, using commercial bifunctional NiMo/Al~2~O~3~ catalysts. The operating temperature, pressure, liquid hourly space velocity, gas/