汽雾冷却条件下转炉炉体瞬态温度场

详细信息

The Distributions and Variations of the Instant-temperature-field of BOF During Spraying Cooling

1. Journal Division of Natural Sciences, Academic Publishing Ceter, Higher Education Press, Beijing 100029, China;
2. School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing 100083, China

摘要: 通过有限元方法,对汽雾冷却条件下大型转炉炉体瞬态温度场进行了三维有限元仿真分析及宝钢300 t大型转炉热电偶数据实测,研究了该条件下炉体瞬态温度场的分布及变化规律.实测的炉壳温度及其变化规律与有限元仿真结果吻合较好,证实了炉体瞬态温度场有限元分析的可信性.研究结果表明,汽雾冷却条件下炉壳温度呈锯齿形波动(降温速度快,升温较慢),平均降温速度为2~2.5℃/min.运用汽雾冷却技术,可将炉壳温度控制在材料热蠕变温度(约400℃)以下,有效抑制了炉壳热蠕变变形.
- 转炉 /
- 汽雾冷却 /
- 瞬态温度场 /
- 有限元方法
Abstract: The distributions and variations of the instant-temperature-field of BOF during spray cooling have been studied.The instant-temperature-field FEA model for the converter has been established.Compared with the measured thermocouple data from 300 t Furnace of Bao Steel.FEA model reliability has been validated.It is found that the shell temperature line is a zigzag line:it goes down fast, then goes up slowly. The average cooling velocity is 2~2.5℃/min.With spraying cooling system, the shell temperature can be controlled under material's creeping temperature(about 400℃).
- basic oxygen furnace(BOF) /
- spraying cooling /
- the instant-temperature-field /
- FEA

[1]	GOODMAN N J, BROWN D.Development of the hi-vap BOF cooling system[J].Iron and Steel Engineer, 1993, 70(11):52-55.
[2]	METALS K.Hi-vap cooling for increased BOF vessel life[J].Steel Times, 1997, 21(10):42-44.
[3]	BREZNY B.Effects of comolded brick on thermonmechanical stresses in BOF lining[C]//Steelmaking Conference Proceedings.Chicago:Iron & Steel Society, 1994, 77:499-504.
[4]	MORALES R D, LOPEZ A G, OLIVARES I M.Heat transfer analysis during water spray cooling of steel rods[J].ISIJ International, 1990, 30(1):48-57.
[5]	林恒.大型转炉炉体汽雾冷却机理及功效的研究[D].北京:北京科技大学机械工程学院, 2002. LIN Heng.The mechanisms and effects of sray cooling of large converter[D].Beijing:School of Mechanical Engineering, University of Science and Technology Beijing, 2002.(in Chinese)
[6]	杨世铭.传热学基础[M].北京:高等教育出版社, 2004.
[7]	ECKERT E R G, GOLDSTEIN R J.传热学测试方法[M].蒋章焰, 何文欣, 陈文芳, 译.北京:国防工业出版社, 1987.
[8]	顾维藻, 神家锐, 马重芳, 等.强化传热[M].北京:科学出版社, 1990.