In order to meet the requirements of low nitrogen emission by a gas boiler,a new 10MW low nitrogen burner based on staged combustion technology was designed.Through the modeling of the burner and the numerical simulation of the combustion process,the temperature field,velocity field and nitrogen oxide(NOx)component concentration field near the burner outlet under the four operating conditions of 100%,80%,60%and 40%rated load of the burner were analyzed.The results show that the burner has good combustion characteristics under various working conditions,and can achieve stable combustion and low NOx emissions.
gas burnersstaged combustionlow nitrogen emissionsnumerical simulation