It is very important to clarify the surface temperature of the oxygen lance nozzle and the wa-ter-cooling characteristics in the oxygen lance nozzle to improve the water-cooling effect of the oxy-gen lance.However,the high temperature and harsh environment in the furnace makes it difficult to determine the water-cooling effect in routine experiments.In this research,numerical simulation is used to establish models for three different structures of water baffle,and the influence of water baffle structure on nozzle end temperature,flow field in water cooling channel,cooling water heat transfer and so on is analyzed.The results show that the water baffle surrounding the nozzle hole and the end length is 30 mm longer than the diameter of the nozzle hole,which can effectively reduce the maximum temperature of the nozzle end face and reduce the area of the high temperature area of the end face.Compared with scheme Ⅰ and scheme Ⅱ,the heat exchange capacity of the water baffle designed in scheme Ⅲ is increased by 25 040 and 7 060 kW respectively.
oxygen lance water coolingwater baffleheat exchangenumerical simulation
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