Transient experiments and modeling of the catalytic combustion of methane in a monolith reactor
- Univ. of Alberta, Edmonton, Alberta (Canada). Dept. of Chemical Engineering
- Univ. of Bath, Avon (United Kingdom). School of Chemical Engineering
The combustion of methane with an excess of oxygen was examined under transient conditions in a catalytic monolith reactor. The reaction exhibited a sharp light off in the inlet region of the reactor, and essentially complete combustion was attained. The experimental reactor was modeled using a comprehensive two-dimensional finite element simulator previously developed. Theoretical and observed temperatures were well matched in the reactor following complete combustion. The simulator predicted a response of the order of 1--2 s faster than that observed near the inlet to the reactor where the reaction was occurring. Similar agreement was found for startup and shutdown of the reactor, as well as for a situation where the supply of methane to the reactor was interrupted for a period of 16 s. Analysis of the temperature profiles during startup operation showed that the reactor exhibited light off near the entrance, with the heat wave being propagated toward the reactor exit. The Nusselt number exhibited a steady state value of the order of 4, with different values obtained during transient operation. The reaction does not become completely mass transfer controlled in spite of the rapid rise of temperature in the ignition region.
- OSTI ID:
- 212206
- Journal Information:
- Industrial and Engineering Chemistry Research, Vol. 35, Issue 2; Other Information: PBD: Feb 1996
- Country of Publication:
- United States
- Language:
- English
Similar Records
Radiation heat transfer in catalytic monoliths
Near-Zero NOx Combustion Technology for ATS Mercury 50 Gas Turbine