Experiment Research on Atomization and Ignition of Coal-Based Fischer-Tropsch Fuel

In order to investigate the atomization and ignition performance of coal-based Fischer-Tropsch synthetic aviation alternative fuels, a single-module rectangular combustor was used to experiment the atomization Sauter mean diameter (SMD) and lean ignition limit of the domestic coal-based F-T synthesis, traditional aviation kerosene RP-3 and 50: 50 mixture of both fuels. Experiment results show that, the atomization and lean ignition limit of the three fuels share the same trends under normal temperature respectively, where the decreasing trend of SMD slows after fuel injection pressure reaches 0.5MPa and the expansion trend of lean ignition limit slows after combustor pressure drop reaches 2.0%. Atomization and ignition performance of the F-T fuel are poorer than that of aviation kerosene RP-3, which can be improved by mixing with each other. The atomization SMD empirical relationship was summarized by using the response surface methodology (RSM), and the effects of atomization and evaporation process on ignition performance were analyzed.