Numerical simulation of ultra-low calorific value gas combustion

This paper full-scale simulates the processes of mixing combustion of ultra-low calorific value gas and high-temperature oxygen gas by using k-e turbulence model, non-premixed combustion model and P1 radiation model. Through comparing the different swirl angles on the impact of ultra-low calorific value gas combustion, the results showed that: in the same air and gas flow rates, 60^° swirl burner has better combustion ability, the temperature field and velocity field of combustion chamber are more uniform, combustible gas and oxygen concentration of the export are also lower.