Flammability, Ignition Energy and Flame Speeds in NH₃-H₂-CH₄-N₂O-O₂-N₂ Mixtures

Abstract

This report describes studies on flammability and flame propagation in mixtures of interest to the Flammable Gas Safety Issue for the waste tank farms at the Hanford site. Flammability limits, pressure histories, ignition energy, and flame speeds have been measured for selected mixtures of hydrogen–nitrous oxide–air, methane–nitrous oxide–air, ammonia–nitrous oxide and hydrogen–nitrous oxide–ammonia–nitrogen–methane–air mixtures at initial pressures of 100 kPa. These investigations were accompanied by reactant and product gas-analysis using gas chromatography and Fourier transform infrared spectrometry.