Premixed Flame Inhibition by Manganese and Tin Compounds.
Premixed Flame Inhibition by Manganese and Tin
Linteris, G. T.; Knyazev, V.; Babushok, V. I.
Halon Options Technical Working Conference. Proceedings.
HOTWC 2001. Sponsored by: University of New Mexico,
Fire Suppression Systems Assoc., Fire and Safety Group,
GlobeTech, Inc., Halon Alternative Research Corp.,
Hughes Associates, Inc., Kidde, plc., Modular
Protection, Corp., Next Generation Fire Suppression
Technology Program, Sandia National Laboratories, Summit
Environmental Corp., Inc. and 3M Specialty Materials.
April 24-26, 2001, Albuquerque, NM, Daniels, B. L.;
Cole, D. G., Editor(s)(s), 72-82 pp, 2001.
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halon alternatives; premixed flames; manganese; tin;
flame inhibition; fire suppression; kinetic mechanism;
Flame inhibition data exist for a few metallic compounds
(Fe(CO)5, Pb(C2H5)4, CrO2Cl2) which show them to be one
or two orders of magnitude more effective than halon
1301 at reducing the burning velocity of premixed
methane-air flames. Little burning velocity data exist,
however, for other metallic compounds. We present the
first data on the effect of
methylcyclopentadienylmanganese tricarbonyl (MMT) and
tetramethyltin TMT on the burning velocity of premixed
methane-air flames for a range of stoichiometries and
oxygen mole fractions in the oxidizer. We also present
kinetic mechanisms for tin and manganese in flames, and
use these to predict the effect of these compounds on
burning velocity and hence the overall reaction rate. We
use the kinetic descriptions to infer the mechanism of
flame inhibition and compare the performance of these
compounds with that of Fe(CO)5. Finally, we discuss the
implications of the present results with respect to the
utility of metals as additives to inert gases fire
suppressants for unoccupied spaces.