Abstract: The standard k -ε turbulence model was used to analyse the flow field character of oil and gas mixture mixed with coal particles（partical two-phase flow）in micro-oil burner，and the level set method （LSM）was used to simulate the trajectory of partical two-phase flow. The simulation results described the velocity distribution along X -axis of partical two-phase flow in firebox，as well as the concentration and track of coal particle，it provides theoretical basis for in-depth study of gasificating micro-oil ignition technology.

Key words: micro-oil ignition, k -ε turbulence model, level set method（LSM）, partical two-phase