Experimental Study of the Inhibition of Premixed and Diffusion Flames by Iron Pentacarbonyl.
Experimental Study of the Inhibition of Premixed and
Diffusion Flames by Iron Pentacarbonyl.
Reinelt, D.; Linteris, G. T.
Combustion Institute, Symposium (International) on
Combustion, 26th. Proceedings. Volume 1. July
28-August 2, 1996, Napoli, Italy, Combustion Institute,
Pittsburgh, PA, 1421-1428 pp, 1996.
combustion; chemical inhibition; halon alternatives;
flame chemistry; laminar burning velocity
The recent ban on the production of CF3Br has motivated
a search for alternate agents for fire suppression;
however, a replacement agent with all of the desirable
properties of CF3Br is proving difficult to find. While
most of the research has concentrated on other
halogenated agents, there exist agents that are much
more effective than CF3Br but about whose inhibition
mechanism less is known. These agents typically involve
a condensed phase. This paper investigates the behavior
of iron pentacarbonyl (Fe(CO)5), one of the most
efficient inhibitors identified in the past, in
methane/oxygen/nitrogen flames; measurements are
reported for both diffusion and premixed flames. The
reduction in the extinction strain rate and laminar
burning velocity with addition of iron pentacarbonyl is
determined over moderate ranges of fuel-air equivalence
ratio and oxygen mole fraction. The flame and inhibitor
locations in the counterflow diffusion flame experiments
are varied to control the condensed- and gas-phase
species transport rates to the flames and the chemical
environment for their reaction.