Synthesis and Flammability Limits of Low-Btu Gas Mixtures

Abstract

Representative low-Btu gas mixtures derived from coal are presented and simplified, resulting in synthetic low-Btu gas mixtures composed of H₂, CO, CH₄, N₂, and CO₂. Mine-atmosphere flammability data are applied to the synthetic mixtures to produce flammability limits at one atmosphere and 77 °F. Two-component synthetic mixtures of CH₄ and an inert gas are shown to be not suitable for certain combustion experiments requiring low-Btu gases.