Development of Low-Noise and Long-Flame Oxy-Oil Burner for Open Hearth

摘要

In order to improve the ability of the heating during the nonblowing period of 300-ton blown oxygen open-hearth of Anshan Iron and Steel Co., a post-mixing end oxy-oil burner has been developed in production conditions. The oil is pre-burnt with 0.2 to 0.3 stoichiometric oxygen provided through the annulus around the oil nozzle. The flame from the burner is well in rigidity and luminosity, its temperature is 40 to 100 C higher than that with selective oxygen enrichment combustion. Using the burner, fuel consumption may be reduced and operating rate and output of the openhearth increased. The tip of the burner is made of copper and cooled with water, so that it makes the burner reliable and more durable. To reduce combustion noise of the long-flame oxy-oil burner, some effective measures were taken to stabilize the combustion process at the burner exit. Thereby the noise level of the burner is reduced to that of conventional oil burner.