In order to maintain the flue temperature and guarantee the gas can combustion fully, gas pressure control loop and the sub flue suction control loop are designed.

Through the orthogonal experiments, the author found out the major factor affecting the combustion and thermal characteristics from the gas pressure, water flow, air-inlet area and fume-exhaust area.

In this paper, the ram accelerator is taken as engineering background, the high pressure abnormal combustion of a combustible gas mixture is studied.