260t/h大型干熄焦炉环形烟道内墙应力场
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摘要
为了找到抑制干熄焦内墙损坏的措施,以260 t/h大型干熄焦炉环形烟道内墙为研究对象,采用热应力顺序耦合法,就温度场、装焦量及三角形挡墙对环形烟道内墙变形量的影响进行分析。结果表明,在温度场作用下,内墙的变形量较无温度场时大幅增加,说明热应力是造成内墙变形的主要因素;无论在冷态还是热态条件下,环形烟道内墙变形量都会随着干熄炉内装焦量的增加而逐渐增大;无温度场情况时,三角挡墙对内墙变形的抑制作用更加明显;有温度场作用时,当焦面高度达到4 m以上时三角挡墙对内墙变形有明显的抑制作用。三角挡墙最为合理的高度为1.0 m。
In order to get the method to inhibit the destruction of inwall,the effects of temperature field,amount of coke and the triangle wall on the deformation of internal wall of annular air duct were studied by the coupled method of thermal stress and structural stress in 260 t/h large CDQ. It was found that due to the effect of the temperature field,the deformation of the internal wall increased more remarkably than that in the cold condition. It is indicated that the thermal stress is major factor on the internal wall deformation. Under the cold or hot conditions,the deformation of the internal wall of the annular air duct will be enlarged with the increase in the quantity of coke in CDQ. The triangular wall can inhibit the deformation of the internal wall obviously. When the temperature field is applied,the deformation of the internal wall was alleviated when the quantity of coke reaches 4 meters more or less. The most reasonable height of the triangular stand wall is 1.0 meters.
In order to get the method to inhibit the destruction of inwall,the effects of temperature field,amount of coke and the triangle wall on the deformation of internal wall of annular air duct were studied by the coupled method of thermal stress and structural stress in 260 t/h large CDQ. It was found that due to the effect of the temperature field,the deformation of the internal wall increased more remarkably than that in the cold condition. It is indicated that the thermal stress is major factor on the internal wall deformation. Under the cold or hot conditions,the deformation of the internal wall of the annular air duct will be enlarged with the increase in the quantity of coke in CDQ. The triangular wall can inhibit the deformation of the internal wall obviously. When the temperature field is applied,the deformation of the internal wall was alleviated when the quantity of coke reaches 4 meters more or less. The most reasonable height of the triangular stand wall is 1.0 meters.
引文
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[2]朱利,折媛,湛文龙,等.焦炭高温性能对高炉焦炭负荷影响的生产实践[J].钢铁,2018,53(4):8.(ZHU Li,SHE Yuan,ZHAN Wen-long,et al.Practice for effect of coke high temperature properties on coke burden in blast furnace[J].Iron and Steel,2018,53(4):8.)
[3]王希波,蔡国庆,秦建涛,等.干熄炉倾斜烟道和环形风道用耐火材料的选择及其损毁原因[J].耐火材料,2014,48(2):135.(WANG Xi-bo,CAI Guo-qing,QIN Jian-tao,et al.Selection of refractory material for inclined flue and annular duct of CDQ and reason of damage[J].Refractory,2014,48(2):135.)
[4]陈志明,姚红英.干熄焦的生产实践及发展方向探讨[J].钢铁,2001,36(5):1.(CHEN Zhi-ming,YAO Hong-ying.Practice and development trends of dry coke quenching[J].Iron and Steel,2001,36(5):1.)
[5]冯文斌.干熄炉内筒倒塌原因分析及改进措施[J].工业炉,2014,36(2):69.(FENG Wen-bin.Analysis and advance about collapse of annular duct of CDQ[J].Industrial Furnace,2014,36(2):69.)
[6]徐国涛,吕永劲,盛军波,等.大型干熄焦炉环形风道破损原因分析及热态模拟研究[J].耐火材料,2015,49(3):204.(XUGuo-tao,LüYong-jin,SHENG Jun-bo,et al.Analysis and thermal simulation of annular duct failure for large CDQ[J].Refractory,2015,49(3):204.)
[7]郭飞,于进江.干熄焦环形风道损坏原因分析与技术改造[J].燃料与化工,2017,48(5):32.(GUO Fei,YU Jin-jiang.Causes analysis on CDQ circular air duct damage and technical innovation[J].Fuel and Chemical Processes,2017,48(5):32.)
[8]张莹,周延明.干熄炉内环形风道的改进[J].燃料与化工,2012,43(1):38.(ZHANG Ying,ZHOU Yan-ming.Progress in annular duct of CDQ[J].Fuel and Chemical Processes,2012,43(1):38.)
[9]赵景,廖在明.干熄炉环形风道结构改造与探索[J].燃料与化工,2014,45(2):28.(ZHAO Jing,LIAO Zai-ming.Renovation and study in structure of the annular air-duct in CDQ chamber[J].Fuel and Chemical Processes,2014,45(2):28.)
[10]汪洁,钱江.干熄焦装置环形风道区结构改进探讨[C]//2013年干熄焦技术交流研讨会论文集.北京:中国金属学会,2013:99.(WANG Jie,QIAN Jiang.Discussion about structure of annular duct of CDQ[C]//Symponsis on CDQ Technology.Beijing:The Chinese Society for Metals,2013:99.)
[11]杨梦,张美杰,邵志君,等.干熄焦炉环形风道内墙损毁的应力分析与修复[J].煤炭转化,2017,40(5):50.(YANG Meng,ZHANG Mei-jie,SHAO Zhi-jun,et al.Damage analysis form stress and repair of annular gas channel inner of coke quenching[J].Coal Conversion,2017,40(5):50.)
[12]史夏逸,周向,朱繁,等.烧结烟气SCR脱硝反应器流场模拟与设计优化[J].中国冶金,2018,28(1):66.(SHI Xia-yi,ZHOU Xiang,ZHU Fan,et al.Numerical simulation and optimization for flow field in SCR denitrification reactor for sintering gas[J].China Metallurgy,2018,28(1):66.)
[13]程本军,李鹏飞,谭慎迁,等.预热温度对钢包盛钢是的内衬温度及应力影响[J].钢铁研究学报,2015,27(9):39.(CHENG Ben-jun,LI Peng-fei,TAN Shen-qian,et al.Effect of preheating temperaure on stress and temperature of ladle lining during the molten steel holding process[J].Journal of Iron and Steel Research,2015,27(9):39.)
[14]杨林,胡林,张兴刚.二维晶格颗粒堆积中侧壁的压力分布与转向系数[J].物理学报,2015,63(13):212.(YANG Lin,HULin,ZHANG Xing-gang.Side wall pressure distribution and steering coefficient in two-dimensional lattice particle packing[J].Acta Physica Sinica,2015,63(13):212.)
[15]ISIJ and JSPS 54 Committee.Physical and Chemical Data Book for Iron-and-Steelmaking(Ironmaking)[M].Tokyo:Nissei Company Press,2006.
[16]王振峰,颜培刚,唐洪飞,等.高压气冷涡轮内冷通道换热系数准则式的研究[J].工程热物理学报,2010,31(2):247.(WANG Zhen-feng,YAN Pei-gang,TANG Hong-fei,et al.Study on innter-cooling channel's heat transfer coefficient criteria formula of a high pressure air-cooled turbine[J].Journal of Engineering Thermophysics,2010,31(2):247.)
[17]杨世铭,陶文铨.传热学[M].北京:高等教育出版社,2006.(YANG Shi-ming,TAO Wen-quan.Heat Transfer[M].Beijing:Higher Education Press,2006.)