东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (3): 392-396.DOI: 10.12068/j.issn.1005-3026.2015.03.020

• 材料与冶金 • 上一篇    下一篇

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   

  1. (北京科技大学 冶金与生态工程学院， 北京100083)
  • 收稿日期:2013-10-10 修回日期:2013-10-10 出版日期:2015-03-15 发布日期:2014-11-07
  • 通讯作者: 刘成松
  • 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.
  • 基金资助:
    国家自然科学基金资助项目(51074021).

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   

  1. School of Metallurgical and Ecological Engineering， University of Science and Technology Beijing， Beijing 100083， China.
  • Received:2013-10-10 Revised:2013-10-10 Online:2015-03-15 Published:2014-11-07
  • Contact: TANG Hai-yan
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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SiO2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

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 SiO2 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 Tf， 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

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