Novel Simulation Approaches for Cyclic Steady-state Fixed-bed Processes Exhibiting Sharp Fronts and Shocks

2005 ◽  
pp. 207-223 ◽  
Author(s):  
Frank Platte ◽  
Dmitri Kuzmin ◽  
Christoph Fredebeul ◽  
Stefan Turek
Keyword(s):  
Steady State ◽  
Fixed Bed ◽  
Sharp Fronts

Evaluation of stability of a catalytic fixed-bed reactor from a steady-state model

1993 ◽  
Vol 48 (21) ◽  
pp. 3677-3681 ◽  
Author(s):  
Venkata R. Khandavalli ◽  
V.Dharma Rao ◽  
M.V. Ramakanth ◽  
Kirankumar V. Athota
Keyword(s):  
Steady State ◽  
Fixed Bed ◽  
State Model ◽  
Fixed Bed Reactor ◽  
Steady State Model

Effect of intraparticle convection on the steady-state behavior of fixed-bed catalytic reactors

1990 ◽  
Vol 45 (8) ◽  
pp. 2653-2660 ◽  
Author(s):  
Alírio E. Rodrigues ◽  
Rosa M. Quinta Ferreira
Keyword(s):  
Steady State ◽  
Fixed Bed ◽  
Catalytic Reactors ◽  
State Behavior ◽  
Steady State Behavior

Steady State Model for Heat Transfer in a Packed Bed Reactor of Elliptic Cylindrical Shape

2008 ◽  
Vol 6 (1) ◽  
Author(s):  
Laércio G. Oliveira ◽  
Ramdayal Swarnakar ◽  
Antonio G. B. de Lima
Keyword(s):  
Heat Transfer ◽  
Steady State ◽  
Fixed Bed ◽  
Packed Bed ◽  
Numerical Results ◽  
Packed Bed Reactor ◽  
Fixed Bed Reactor ◽  
Dimensionless Temperature ◽  
Cylindrical Shape ◽  
Temperature Profiles

The fixed-bed reactors of circular cylindrical geometry with heated or cooled walls are frequently used to carry out heterogeneous reactions of solid-gas type in engineering applications. The design of a fixed bed reactor requires an extensive knowledge of heat transfer characteristics within the packed bed. In this sense, this work presents a three-dimensional mathematical model to predict the heat transfer inside a fixed bed elliptical cylinder heat exchanger. The model considers uniform velocity and temperature profiles of the fluid phase at the entrance of the reactor, and constant thermo-physical properties. The surface of the equipment convective boundary condition is assumed to be constant. The energy equation, written in the elliptical cylindrical coordinates, was discretized using a finite-volume method considering a fully implicit formulation, and WUDS interpolation scheme. Numerical results of the dimensionless temperature profiles inside the packed bed reactor at a steady state are presented and temperature distribution is interpreted. To validate the model, numerical results obtained for the circular cylinder are compared with analytical results from literature and a good agreement was obtained.

Simulation of coke and metal deposition in catalyst pellets using a non-steady state fixed bed reactor model

2006 ◽  
Vol 61 (22) ◽  
pp. 7463-7478 ◽  
Author(s):  
Bas M. Vogelaar ◽  
Rob J. Berger ◽  
Bas Bezemer ◽  
Jean-Paul Janssens ◽  
A. Dick van Langeveld ◽  
...  
Keyword(s):  
Steady State ◽  
Fixed Bed ◽  
Metal Deposition ◽  
Fixed Bed Reactor ◽  
Reactor Model ◽  
Catalyst Pellets
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