。1272· 北京科技大学学报 第29卷 90r 加有利于提高换热系数，并且换热系数对焦炭粒度 80*◇△0实验值 2 较为敏感. 拟合直线 70 参考文献 60 【刂赵沛，蒋汉华.钢铁节能技术分析.北京：治金工业出版社， 1999.71 40 【习潘立慧，魏松波.炼焦新技术.北京：治金工业出版社，2005： 30 213 204 [3习捷波里特斯基M了干法熄焦。李哲浩，虞继舜，何中虹，译. 10 北京：治金工业出版社，1981：6 0.3 0.40.50.60.7 0.8 冷却气体流速，/(ms) [4 Takashi M,Takeo F.Seiichim S.The coke dry quenching pro cess as energy-saving technology.Trans Iron Steel Inst Jpn. 图8干熄炉冷却段中轴线上的焦炭表面局部换热系数 1980,20(2)±108 Fig.8 Local heat transfer coefficients along the axis of the cooling [5 Wang C H.How Baoshan Steel Works commissioned China's chamber in CDO shaft first coke dry quench plnt.Steel Times Int 1987,11(1):48 [(Kitaev B H.竖炉热交换.姚正，宋辰光，译北京：中国工业出 表面局部换热系数，实施了焦炭导热反问题的数值 版社出版.1964.93 求解.计算结果表明，焦炭表面局部换热系数随着 【王获楠.干熄炉焦炭床层传热系数的实验研究学位论文]· 冷却过程的进行逐渐增大，直到焦炭温度降至与冷 北京：北京科技大学.2002：20 却气体基本一致时，换热系数剧增趋于无穷大，达到 [8 Sesadri V,da Silva Pereira RO.Comparison of formulae for de termining heat transfer coefficient of packed beds.Trans ISIJ. 热平衡态. 1986.26604 (2)实验结果表明，焦炭局部换热系数与干熄 [身冯妍卉，张欣欣，刘华飞等.干熄炉内平均换热系数的实验研 炉内平均换热系数变化规律相似：冷却气体流量增 究燃料与化工，2003,344)：179 Local and average heat transfer coefficients of coke bed in a coke dry quenching chamber FENG Y anhui,ZHANG Xinxin,LIU Zhicheng,WU Maolin Mechanical Engineering School,University of Science and Technology Beijing.Beijing 100083.China ABSTRACT According to the features of coke bed heat transfer in a coke dry quenching (CDQ)chamber,an experimental setup of CDQ chamber heat transfer was established to test the primary parameters such as coke size and cooling gas flow.In order to deal with experimental data effectively,the average heat transfer coeffi- cient was redefined and its dimensionless equation was deduced.The local heat transfer coefficient of coke bed was numerically analyzed based on the inverse heat conduction problem in the single coke.The experimental data show that the change law of average heat transfer coefficient is similar to that of local heat transfer coefficient. Both of them increase with increasing fluid flux and are sensitive to coke size,and the smaller the coke size,the larger the heat transfer coefficients. KEY WORDS coke dry quenching (CDQ);heat transfer coefficient;inverse heat conduction problem;coke dry quenching chamber;coke bed;coke size图 8 干熄炉冷却段中轴线上的焦炭表面局部换热系数 Fig.8 Local heat transfer coeffi cients along the axis of the cooling chamber in CDQ shaft 表面局部换热系数, 实施了焦炭导热反问题的数值 求解.计算结果表明, 焦炭表面局部换热系数随着 冷却过程的进行逐渐增大, 直到焦炭温度降至与冷 却气体基本一致时, 换热系数剧增趋于无穷大, 达到 热平衡态 . (2) 实验结果表明, 焦炭局部换热系数与干熄 炉内平均换热系数变化规律相似 :冷却气体流量增 加有利于提高换热系数, 并且换热系数对焦炭粒度 较为敏感. 参 考 文 献 [ 1] 赵沛, 蒋汉华.钢铁节能技术分析.北京:冶金工业出版社, 1999:71 [ 2] 潘立慧, 魏松波.炼焦新技术.北京:冶金工业出版社, 2005: 213 [ 3] 捷波里特斯基 M Γ.干法熄焦.李哲浩, 虞继舜, 何中虹, 译. 北京:冶金工业出版社, 1981:6 [ 4] Takashi M, Takeo F, Seiichiro S.The coke dry quenching pro￾cess as energy-saving t echnology .Trans Iron Steel Inst Jpn, 1980, 20( 2) :108 [ 5] Wang C H .How Baoshan S teel Works commissioned China' s first coke dry quench plant.Steel Times Int, 1987, 11( 1) :48 [ 6] Kitaev B H .竖炉热交换.姚正, 宋辰光, 译.北京:中国工业出 版社出版, 1964:93 [ 7] 王荻楠.干熄炉焦炭床层传热系数的实验研究[ 学位论文] . 北京:北京科技大学, 2002:20 [ 8] Sesadri V, da Silva Pereira R O .Comparison of f ormulae f or de￾t ermining heat transf er coefficient of packed beds.Trans ISIJ, 1986, 26:604 [ 9] 冯妍卉, 张欣欣, 刘华飞, 等.干熄炉内平均换热系数的实验研 究.燃料与化工, 2003, 34( 4) :179 Local and average heat transfer coefficients of coke bed in a coke dry quenching chamber FENG Y anhui, ZHANG Xin xin, LIU Zhicheng, WU Maolin Mechanical Engineering School, University of Science and Technology Beijing, Beijing 100083, China ABSTRACT According to the features of coke bed heat transfer in a coke dry quenching ( CDQ) chamber, an experimental setup of CDQ chamber heat transfer was established to test the primary parameters such as coke size and cooling gas flow .In order to deal with experimental data effectively , the average heat transfer coeffi￾cient w as redefined and its dimensionless equation was deduced .The local heat transfer coefficient of coke bed w as numerically analyzed based on the inverse heat conduction problem in the single coke .The experimental data show that the change law of average heat transfer coefficient is similar to that of local heat transfer coefficient . Both of them increase w ith increasing fluid flux and are sensitive to coke size, and the smaller the coke size, the larger the heat transfer coefficients . KEY WORDS coke dry quenching ( CDQ ) ;heat transfer coefficient ;inverse heat conduction problem ;coke dry quenching chamber ;coke bed ;coke size · 1272 · 北 京 科 技 大 学 学 报 第 29 卷