Analysis of chemical kinetic systems over the entire parameter space. III. A wet combustion system

A simple generalization of Semenov thermal explosion theory is studied here; one exothermic reaction taking place at the same time as a second one involving water as a reactant. Evaporation and condensation are also considered. The resulting two ordinary differential equations containing three parameters are treated by recently developed methods outlined in the first paper of this series. This model is a simple representation of the combustion of wet cellulosic materials such as bagasse, cotton and sawdust. The theory predicts an amazing variety of behaviour arising in association with the degenerate singularities that occur. These include degeneracies up to and including the quartic fold, H3 2 bifurcation and degenerate double zero eigenvalue points.

In thermal explosion theory it is usually impossible analytically, and sometimes a substantial task numerically, to locate the ambient temperature at which transition from discontinuous to continuous behaviour occurs. It is possible to establish analytically a lower bound that is remarkably close to the numerically computed value.


1973 ◽  
Vol 51 (23) ◽  
pp. 4001-4003 ◽  
Author(s):  
Huw O. Pritchard ◽  
Brian J. Tyler

Thermal explosion limits have been measured in the temperature range 285–351 °C for methyl isocyanide and at 351 °C for mixtures of methyl isocyanide and methyl cyanide. We suggest that the methyl isocyanide isomerization is potentially the best reaction system against which to test thermal explosion theories, but at the present time certain kinetic, thermochemical, and thermodynamic data are not available with sufficient accuracy.


1990 ◽  
Vol 13 (2) ◽  
pp. 343-347 ◽  
Author(s):  
N. Sri Namachchivaya ◽  
H. J. Van Roessel
Keyword(s):  

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