REACTION FRONT PROPAGATION CHARACTERISTICS IN NON-CATALYTIC EXOTHERMIC GAS-SOLID SYSTEMS

Autor:	Hemant W. Dandekar, Vladimir Hlavacek, Jan A. Puszynski, Jan Degreve
Rok vydání:	1990
Předmět:	Transition metal nitrides Exothermic reaction Computer simulation Chemistry General Chemical Engineering Thermodynamics General Chemistry Combustion Stability (probability) law.invention law Scientific method Physics::Chemical Physics Adiabatic process Filtration
Zdroj:	Chemical Engineering Communications. 92:199-224
ISSN:	1563-5201 0098-6445
DOI:	10.1080/00986449008911431
Popis:	Synthesis of transition metal nitrides and hydrides can be accomplished in the self propagating high temperature regime. A one dimensional model is proposed to study the effects of various operating parameters on the stability of the combustion front, to which gaseous oxidizer is fed by a process of filtration through the permeable solid. Different propagation phenomena can exist depending on the pressure of the gaseous reactant. The stability criteria derived for solid-solid systems can be extended for gas-solid systems at high pressures. At very low pressures filtration combustion is always stable. Systems which show unstable front propagation under adiabatic conditions have been observed to become more unstable due to heat losses.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::72b7d1ae3af226cf92dce6efab618684 https://doi.org/10.1080/00986449008911431 Zobrazit plný text záznamu