The paper presents a two dimensional model for a fixed bed catalytic reactor in which a distinction is made between fluid and solid temperatures and partial pressures. The importance of the boundary conditions for the radial heat transfer on predicted axial and radial profiles is illustrated. The pr
Comparison of two-dimensional models for fixed bed catalytic reactors
โ Scribed by S.I. Pereira Duarte; G.F. Barreto; N.O. Lemcoff
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 689 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0009-2509
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โฆ Synopsis
The performance of different two-dimensional models of fixed bed catalytic reactors is analyzed for different situations. The deviation of the response of the simplified models with respect to the heterogeneous one is explained in terms of the operative conditions and the value of dimensionless groups.
A very simple expression to predict the errDr in the conversion for the models considered is derived. A reasonable apreem ent with the errors calculated from the numerical solution of the two-dimensional
๐ SIMILAR VOLUMES
Abetmet-A heterogeneous one dimensional model which takes separately into account the heat transfer through the solid and fluid phases is introduced. The response of this model is compared with that of the heterogeneous two-dimensional model, and a very good agreement, especially at mild conditions,
A one-dimensional model, taking into account the diffusion of substrate between the liquid phase and the solid support, has been used to describe fixed bed enzyme reactors. The equations were solved numerically, and the values of the different parameters were calculated by a nonlinear regression met
A semi-analytical solution of the system of simultaneous second order partial differential equations appearing in the design of a chemical reactor with axial and radial profiles of temperature ?(x, z) and conversion f (x, z) is presented for the case that the rate equation may be approximated by the