Aiming at investigating the micro-mixing combustion characteristics of nitrogen diluted hydrogenrich syngas at high pressures

the combustion model corrected at atmospheric pressure was adopted to analyze the temperature field

flame shape and pollution emissions under conditions with different pressures

powers and equivalent ratios.The results show that

with an increase in pressure

the flame temperature and outlet temperature of the burner rose first and then dropped slightly;the flame width decreased gradually while its height grew;the NOxemission indexes increased and tended to be smooth when the pressure increased to higher than 14 MPa.