The fixed-bed reactor with periodic flow reversal has been shown to be a promising technology for the autothermal combustion of weakly concentrated gases. Modeling works have aided in building a better understanding of these systems, but using a dynamic simulation approach to reach the stable period
The direct calculation of periodic states of the reverse flow reactor—II. Multiplicity and instability
✍ Scribed by Andrew G. Salinger; Gerhart Eigenberger
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 670 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0009-2509
No coin nor oath required. For personal study only.
✦ Synopsis
The strength of the direct calculation methodology for investigating the periodic solutions of the reverse flow reactor is demonstrated by studying two complex manifestations of the systems nonlinearity: multiplicity and instability. First we analyze the propane-propene fuel mixtures to determine all possible feed ranges where two stable, ignited solutions can co-exist. Calculations when catalytic sections of the reactor are replaced with inert sections show how this design modification can force the reactor to the desired stable solution. At other parameter values, we show how the Floquet stability analysis can be used in conjunction with direct calculation to detect bifurcations of symmetric solutions to unsymmetric and periodic solutions.
📜 SIMILAR VOLUMES
It is concluded that the method used lo derive stability criteria for systems operated close IO incipient fluidization using porous distributors is not applicable to systems having large pressure fluctuations at distributor level, i.e. the majority of industrial systems.
A radmlly-lumped pseudo-homogeneous mathematical sunulatlon representmg the dynanuc behavror of an autothermal reactor with mternal countercurrent heat exchange IS presented and solved numertcally by unphclt finite ddference methods The reaction system IS the water-gas shift reactIon The apphcabtity