Numerical Simulation of Slagging Characteristics of Tangential Boiler with Different Burner Arrangement Angles
In order to study the combustion characteristics and slagging tendency of a large scale mixed bi-tuminous coal boiler with low ash melting point,a 300 MW quadrangular tangential coal boiler was stud-ied by CFD method.The results show that when the Angle of the burner is 38°,the temperature distribu-tion is uniform,the flame filling degree is high,and the combustion is stable,but slag formation is easy on the furnace wall.When the Angle of the burner is 42°,the high temperature flame is concentrated in the center of the furnace,the wall temperature is reduced,the slagging tendency is small,but the pulver-ized coal is difficult to burn fully.Overall consideration,when the Angle of the burner is 40°,the combus-tion effect is good,and the risk of slagging is low,and the stable operation of the boiler can be realized.
slagging characteristicspower station boilerburner arrangement Anglenumerical simulation
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