## Ab&ract -A sohd clrculatlon model IS used to investigate the steady-state multipbcctty features of a thudlzed bed reactor m which a single, first-order, exothermlc reactlon occurs The model predicts that up to five steady-state solutlons may exist Numerical examples seem to m&ate that at most t
Modeling of chemical reactors—XXIX mixing-cell model for packed bed reactors. Steady state considerations. Problems of multiplicity
✍ Scribed by J. Sinkule; V. Hláv̌acek; J. Votruba; I. Tvrdík
- Publisher
- Elsevier Science
- Year
- 1974
- Tongue
- English
- Weight
- 468 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0009-2509
No coin nor oath required. For personal study only.
✦ Synopsis
The axial heat and mass transfer in tubular catalytic reactors may be described by mixingcell model and diffusion model as well. The diffusion description yields for a strong exothermic reaction and adiabatic conditions three steady state profiles, on the other hand the mixing-cell model gives rise to more than three steady states. A simple numerical and graphical analysis for mixing-cell model is presented.
📜 SIMILAR VOLUMES
Numerical results are presented in graphical form for a range of parameters where multiple solutions may occur. These results provide valuable material for a further theoretical examination of multiplicity. It is also shown that in multiple cases the Danckwerts boundary conditions are consistent wit
The effect of different values of Peclet numbers (Pee # Pe,,) on the region of multiplicity in adiabatic tubular reactors is followed. A modification of the mapping technique for this case is proposed. The results of calculation are presented in graphs. For the range of experimentally observed ratio
Till now the use of two phase models for the catalytic fixed-bed reactor in the region of multiple steady states led to somewhat confusing results. A continuum of multiple steady state solutions has been obtained no matter whether the continuous two phase models proposed by Liu and Amundson or the c