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IGNITION AND TRANSITION CONDITIONS FOR INFLAMMATION AND EXTINCTION FOR A FIRST-ORDER HETEROGENEOUS REACTION
Faculty
Not Specified
Year:
1995
Type of Publication:
Article
Pages:
237-243
Authors:
ElSayed, SA
DOI:
10.1016/0950-4230(95)00025-V
Journal:
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES BUTTERWORTH-HEINEMANN LTD
Volume:
8
Research Area:
Engineering
ISSN
ISI:A1995TA11700006
Keywords :
IGNITION CONDITIONS, TRANSITION CONDITIONS, HETEROGENEOUS REACTIONS
Abstract:
The problem of determining the thermal states of reacting solid surfaces or gas at a surface and the critical conditions for their inflammation and extinction is of importance both in the combustion of carbon (coal) and for some highly exothermic heterogeneous catalytic processes. This paper examines the effect of ambient temperature on the critical conditions for inflammation and extinction when both diffusion and chemical kinetics are taken into consideration. The transition conditions (the boundary at which criticality disappears) are determined using different modified definitions. The exact Arrhenius form of the reaction rate and different modes of heat transfer are manipulated in this theoretical study.
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