ISSN Online: 2377-424X
ISBN Print: 0-89116-299-2
International Heat Transfer Conference 7
TWO-PHASE MODEL OF A TUBULAR NONADIABATIC REACTOR WITH AXIAL DISPERSION AND GAS-TO-SOLID HEAT AND MASS TRANSFER. NUMERICAL METHODS FOR STEADY STATE ANALYSIS
要約
Three dispersion models of a nonadiabatic
catalytic tubular reactor are investigated: one-phase model and two two-phase models considering external gas-to-solid heat and mass transfer. In the second
(more complex) two-phase model also heat
conduction in the solid phase is considered.
The transport equations of the one-phase
model and of the simpler two-phase model
were solved by a shooting method, which failed
for the more complex two-phase model.
Solution for this model was obtained by using
a finite difference approach. Dependences
of the solution on the Damkohler number
were evaluated for all three models.
For a strong exothermic reaction discontinuities
of the profiles in the solid phase
may be observed for the model without heat
conduction in the solid phase. Introduction
of heat conduction in the solid phase does
not bring essential changes in the solution.