NDLI: Initiation of chain and thermal explosions by the reactor surface. Criterion for the participation of branching chains in a thermal explosion

Content Provider	Springer Nature Link
Author	Aleksandrov, E. N. Kuznetsov, N. M. Kozlov, S. N.
Copyright Year	2007
Abstract	The combustion of hydrogen and silane is studied. It is established that the chain initiation reaction on quartz in the zone of hydrogen and silane combustion is manifested as an autocatalytic reaction which is able to initiate a chain explosion and participate in the initiation of a thermal explosion. It is shown that in the case of an oxyhydrogen gas, the assumption of a branching-chain nature of the third limit is inconsistent with Semenov’s law, which includes double exponential dependences of the chain reaction rate on time and temperature. A criterion for the participation of branching chains in complex processes is proposed based on the presence or absence of short delays of a thermal explosion (≈1 sec). According to the criterion, the explosion of an oxyhydrogen gas at atmospheric pressure with delays markedly exceeding 1 sec proceeds without the participation of branching chains and is consistently explained by the joint action of autocatalytic processes on the reactor wall and gas-phase processes.
Starting Page	530
Ending Page	537
Page Count	8
File Format	PDF
ISSN	00105082
Journal	Combustion, Explosion and Shock Waves
Volume Number	43
Issue Number	5
e-ISSN	15738345
Language	English
Publisher	Springer US
Publisher Date	2007-01-01
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	chain explosion thermal explosion chain branching atoms radicals third ignition limit criterion for the participation of branching chains in processes Mechanics Mechanics, Fluids, Thermodynamics Physical Chemistry Vibration, Dynamical Systems, Control Engineering
Content Type	Text
Resource Type	Article
Subject	Chemistry Physics and Astronomy Fuel Technology Chemical Engineering Energy Engineering and Power Technology

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