Combustion studies in a well-stirred reactor

The design and development of low-emissions, lean premixed aero, or industrial gas turbine combustors is very challenging because it entails many compromises. To satisfy the projected CO and NO;In addition, the WSR was used to study the thermal decomposition of Halon 1301 because the understanding of the chemical processes associated with fire suppression by the addition of Halon 1301 is essential in developing a replacement product for Halon 1301. Both primary and trace products of Halon 1301 decomposition may have important consequences with regard to their toxicity as well as their ozone-depleting potential. Therefore, thermal decomposition of Halon 1301 with combustion of hydrocarbon fuels was studied in the WSR to establish the minimum levels of Halon 1301 concentrations (with the shortest possible residence time) necessary to extinguish a flame.;It was found that the toroidal WSR was capable of peak loading almost twice as high as a spherical WSR and yielded a better fuel-lean performance. An analysis based upon WSR theory provided good predictions of the WSR lean blowout limits. The WSR combustion efficiency was 99 percent over a wide range of mixture ratios and reactor loading. CO emissions reached a minimum at a flame temperature of 1600K, and NO;Emissions from combustion of propane-air-Halon 1301 in the WSR were measured by a combination of Fourier Transform Infrared Spectroscopy (FTIR), acid gas impingers, and Gas Chromatography-Mass Spectrometry (GC-MS). From these experiments, it was concluded that Halon 1301 acts as a chemical flame suppressant in addition to being a physical suppressant. No incomplete reactions of Halon 1301 decomposition radicals were detected in a stable flame for Halon 1301 concentrations less than one percent. Products from the CF...