Abstract
The HBC (Horizontal Bias Combustion) Burner was developed to simultaneously solve five problems, i.e. combustion efficiency, flame stabilization, slagging, high temperature corrosion of furnace wall tube metal and NOx emission, that existed in burning low rank Chinese coal. It was developed for tangential fired systems. HBC burners have been applied to the retrofit of a B and BW-410/9.8-M pulverized coal boiler of 410 t/h steam at MCR in LPFC. Prior to the retrofit, there were three serious problems: flame stability was poor; slagging was terrible; and NOx emission was high. Satisfactory results have been obtained in operation after the retrofit with the HBC burners. The flame stability has been improved a great deal. Furthermore, the slagging problem has been solved. Moreover, NOx emission has been abated by more than 50%.
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