
收稿日期: 2013 - 10 - 10
基金项目: 国家自然科学基金资助项目(51074021).
作者简介: 刘成松(1986 - ),男,湖南永州人,北京科技大学博士研究生; 李京社(1959 - ),男,北京人,北京科技大学教授,博士生
导师.
第36卷第3 期
2015 年 3 月
东北大学学报( 自然科学版)
Journal of Northeastern University( Natural Science)
Vo l. 36,No. 3
Mar. 2015
doi:10. 3969 /j.issn.1005 - 3026. 2015. 03. 020
高炉风口理论燃烧温度计算模型的改良
刘成松, 李京社, 唐海燕, 高雅巍
(北京科技大学 冶金与生态工程学院, 北京 100083)
摘 要: 在原有改进型理论燃烧温度(T
f
)模型的基础上,进一步针对煤粉燃烧率、煤粉分解热以及灰分
中 SiO
2
在高温下还原耗热等方面内容进行修正和完善,提出更为全面的 T
f
计算模型,并对比分析了传统模
型、原改进型模型以及本模型中富氧率、鼓风温度、鼓风湿度以及喷煤比等因素变化时对理论燃烧温度的影响
规律. 计算结果表明,与传统模型以及原有改进型模型相比,使用本模型时不同鼓风参数对理论燃烧温度的影
响更为趋于“缓和”,高炉下部炉缺状态相对更为稳定. 事实上高炉在“高富氧,低煤比” 或“低富氧,高煤比”
两种操作下均未出现 T
f
过高或不足的问题,也印证了本模型能更贴切地反映实际生产高炉下部的炉缸热状
态.
关 键 词: 高炉理论燃烧温度;炉缸;计算模型;煤粉燃烧率;煤粉分解
中图分类号: TF 511 文献标志码: A 文章编号: 1005 - 3026(2015)03 - 0392 - 05
Improvements on Calculation Model of Theoretical Combustion
Temperature in the Tuyere Raceway of BF
LIU Cheng-song, LI Jing-she, TANG Hai-yan, GAO Ya-wei
(School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing
100083, China. Corresponding author: TANG Hai-yan, E-mail: tanghaiyan@ metall. ustb. edu. cn)
Abstract: Based on the original modified model for calculating theoretical combustion
temperature (T
f
), the calculation methods for the combustion efficiency of pulverized coal, the
decomposition heat of pulverized coal and the heat consumption of SiO
2
in ash which was reduced
at high temperature, were modified and improved in order to propose a more comprehensive model
for calculating T
f
. The effects of oxygen enrichment rate, blast temperature, blast humidity and
coal rate on T
f
were analyzed and compared among the traditional model, the original modified
model and the present parameters model under different blast respectively. The results showed that
compared with the traditional model and original modified model, the calculation value of T
f
using
the present model under different blast parameters tends to be flatter and the thermal state of hearth
is relatively stable. Actually, according to two kinds of smooth operation conditions existing in the
practical production which are “high oxygen enrichment rate, low coal injection rate” and “ low
oxygen enrichment rate, high coal injection rate” with suitable T
f
, it was verified that this model
could appropriately reflect the actual thermal state of hearth in blast furnace(BF).
Key words: theoretical combustion temperature in BF; hearth; calculation model; combustion
ratio of PCI; PCI decomposition
高炉理论燃烧温度(T
f
) 是决定下部炉缸温
度和热量的重要指标之一,也是表征炉缸煤气参
与炉料热交换前的温度
[1]
. 研究和生产实践表
明,为保持高炉炉况稳定,T
f
值必须维持在一定
的温度范围之内,过高或过低都会对高炉冶炼生
产产生不利的影响. 前人曾根据某钢厂现场中出
现在“高富氧,低煤比”和“低富氧,高煤比” 两种
操作条件下炉况依旧顺行的现象对传统的 T
f
计