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高炉喷吹焦炉煤气操作的?分析
  • ISSN号:1672-7207
  • 期刊名称:《中南大学学报:自然科学版》
  • 时间:0
  • 分类:TF531[冶金工程—钢铁冶金] TF538.61[冶金工程—钢铁冶金]
  • 作者机构:[1]东北大学材料与冶金学院,辽宁沈阳110819
  • 相关基金:国家自然科学基金资助项目(50804008);教育部新世纪优秀人才项目(NCET-08-0099);东北大学基本科研业务费项目(N110602004)
中文摘要:

基于分析理论,建立高炉喷吹焦炉煤气分析模型,系统地研究焦炉煤气喷吹量对高炉损失、热力学完善度和效率的影响,提出高炉喷吹焦炉煤气操作条件下能量利用再优化的途径。研究结果表明:高炉的输入主要为燃料的化学和热风物理;输出主要为铁水的物理和化学、高炉煤气化学以及内部损失;与未喷吹操作相比,当喷吹量为11.89 m3/s时,内部损失和总损失分别降低26.38%和3.98%,外部损失升高2.11%,喷吹焦炉煤气对减少高炉内部的损失更为明显;喷吹焦炉煤气后,高炉的热力学完善度由90.23%上升到92.65%,效率由53.39%上升到54.25%,能量利用的质量得到提高;喷吹焦炉煤气后,铁水和炉渣的物理和化学相对稳定,吨铁炉顶煤气的化学由4.60增加到4.97 GJ,应加强这部分的利用。

英文摘要:

Exergy analytical model of blast furnace with coke oven gas (COG) injection was established based on the theories of exergy analysis. Effects of COG injection volume on the exergy loss, thermodynamic perfection degree and exergy efficiency of blast furnace were researched systematically, and the ways of energy utilization re-optimization of blast furnace with COG injection were put forward. The research results are shown as follows: the input exergy of blast furnace is mainly chemical exergy of fuel and physical exergy of hot blast, and the output exergy is mainly physical exergy and chemical exergy of hot metal, chemical exergy of top gas and internal exergy loss. Compared with no COG injection, internal exergy loss and total exergy loss are decreased by 26.38% and 3.98% respectively while external exergy loss is increased by 2.11% for 11.89 m3/s COG injection. Namely, the injection of COG is more obvious to reduce internal exergy loss of blast furnace. With the increase of COG injection, the thermodynamic perfection degree is increased from 90.23% to 92.65%, and the exergy efficiency is increased from 53.39% to 54.25%, which shows the improvement of energy utilization quality. With the increase of COG injection, the physical exergy and chemical exergy of hot metal and hot slag are relatively stable. The chemical exergy of top gas per ton of hot metal is increased from 4.60 to 4.97 GJ. Therefore it is import.ant to strengthen the utilization of top gas.

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期刊信息
  • 《中南大学学报:自然科学版》
  • 北大核心期刊(2011版)
  • 主管单位:教育部
  • 主办单位:中南大学
  • 主编:黄伯云
  • 地址:湖南长沙中南大学校本部
  • 邮编:410083
  • 邮箱:zngdxb@csu.edu.cn
  • 电话:0731-88879765
  • 国际标准刊号:ISSN:1672-7207
  • 国内统一刊号:ISSN:43-1426/N
  • 邮发代号:42-19
  • 获奖情况:
  • 首届全国优秀科技期刊评比一等奖,第二届全国优秀科技期刊评比一等奖,首届中国有色金属工业优秀科技期刊评比一等奖
  • 国内外数据库收录:
  • 美国化学文摘(网络版),荷兰文摘与引文数据库,美国工程索引,英国科学文摘数据库,中国中国科技核心期刊,中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版)
  • 被引量:20874