Effect of trimethylphosphate additives on the flammability concentration limits of premixed methane-air mixtures

Abstract

The effect of small additives of trimethylphosphate (TMP) on the lean and rich flammability concentration limits of CH 4 /air gas mixtures were studied using an opposed-flow burner and numerical modeling based on detailed kinetic mechanisms. TMP was found to narrow the flammability concentration limits of premixed CH 4 /air mixtures. Modeling using a previously developed model for flame inhibition by phosphorus compounds showed that the model provides a satisfactory fit to experimental results on the effect of TMP additives on the lean concentration limit.

Chemical Transformations in Inhibited Flames over Range of Stoichiometry

“…, 1 9 9 8 ) t o d e t e r m i n e t h e f l a m m a b i l i t y l i m i t s o f m i x t u r e s o f fluorochlorohydrocarbons and air. Knyazkov et al (Knyazkov et al, 2008) used this method to study the effect of TMP additives on FCLs of methane-air mixtures. A significant advantage of the opposed-flow burner method for determining FCLs is that processes in this system can be modeled using detailed kinetic schemes.…”

Reduced Chemical Kinetic Mechanism for Methyl Pentanoate Combustion

“…To simplify the procedure, equal flow rates of the combustible mixture and their increments were chosen on both sides of the burner. This approach was implemented and described in greater detail in ref . Ignition delay times were calculated using the constant-volume adiabatic reactor model with the SENKIN code.…”