炼铁过程富氧及混煤对燃料燃烧性能的影响

doi:10.13228/j.boyuan.issn0449-749x.20210187

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摘要高炉喷吹用燃料的燃烧性能对于高炉冶炼过程来说是非常重要的,使用燃烧性能较好的高炉喷吹燃料更有利于提高煤比、降低焦比,从而降低高炉冶炼成本。为响应节能减排政策,对一些钢铁企业采取了煤粉的限制采购和使用等措施,使得兰炭成为高炉喷吹用燃料的有效替代品。通过工业分析、元素分析和热重分析试验比较了烟煤、无烟煤和兰炭3种高炉喷吹燃料的差异,并研究了不同混合方案以及不同富氧率条件下兰炭燃烧性能的变化。研究结果表明,燃料的综合燃烧特性与其初始燃烧温度、最终燃烧温度和燃烧反应时间均有一定的相关性。3种燃料中,烟煤的综合燃烧特性最好,无烟煤次之,兰炭的综合燃烧特性最弱。为了提高兰炭的燃烧特性,对兰炭和烟煤进行混合燃烧试验,发现随着混合燃料中烟煤含量的增加,混合燃料的综合燃烧特性参数呈现出逐渐增加的趋势,并且在兰炭和烟煤的混合燃烧试验中发现存在协同效应。在研究富氧率对兰炭燃烧性能影响时发现,随着富氧率的增加,兰炭的燃烧性也呈现出逐渐增加的趋势,但是增加的幅度较小。当富氧率由0增加至20%时,兰炭的综合燃烧特性参数从4.53×10^-14增加至6.05×10^-14 min^-2·℃^-3。综上所述,烟煤的添加以及富氧率的提高均对兰炭的燃烧性能有明显的改善效果。

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	梁旺
	李燕江
	张建良
	郭兴敏
	王朋
	王广伟

关键词 ：高炉喷吹, 燃烧性能, 兰炭, 富氧率, 协同效应

Abstract：The combustion performance of the fuel used for blast furnace injection is very important. The use of blast furnace injection fuel with better combustion performance is more conducive to replacing the coke ratio and reducing the cost of blast furnace ironmaking. According to the requirements of the national energy conservation and emission reduction policy, some steel companies have begun to restrict the purchase and use of coal, so semi-coke has become an effective substitute for blast furnace coal injection. The differences between bituminous coal, anthracite, and semi-coke were studied through proximate analysis and thermogravimetric analysis experiments. The changes in the combustion performance of semi-coke under different coal blending schemes and different oxygen enrichment rates were studied. The research results show that the comprehensive combustion characteristics of fuels have a certain correlation with the initial combustion temperature, final combustion temperature and combustion reaction time. Among the three fuels, bituminous coal has the best comprehensive combustion characteristics, followed by anthracite, and semi-coke has the weakest comprehensive combustion characteristics. In order to improve the combustion characteristics of semi-coke, a mixed combustion experiment was carried out on semi-coke and bituminous coal. With the increase of bituminous coal content, the comprehensive combustion characteristic parameters of the blended sample gradually increase. And in the mixed combustion reaction of semi-coke and bituminous coal, a synergistic effect was found. With the increase of oxygen enrichment rate, the combustibility of semi-coke slowly increases. When the oxygen enrichment rate increases from 0 to 20%, the comprehensive combustion characteristic parameters of semi-coke increase from 4.53×10^-14 to 6.05×10^-14 min^-2·℃^-3. The above results show that the addition of bituminous coal and the increase of oxygen enrichment rate can significantly improve the combustion performance of semi-coke.

Key words： blast furnace injection combustion performance semi-coke oxygen enrichment rate synergistic effect

收稿日期: 2021-04-06

引用本文:

梁旺, 李燕江, 张建良, 郭兴敏, 王朋, 王广伟. 炼铁过程富氧及混煤对燃料燃烧性能的影响[J]. 钢铁, 2021, 56(12): 22-27. LIANG Wang, LI Yan-jiang, ZHANG Jian-liang, GUO Xing-min, WANG Peng, WANG Guang-wei. Influence of oxygen enrichment and coal blending on fuel combustion performance in ironmaking process[J]. Iron and Steel, 2021, 56(12): 22-27.

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[1] 李克江,李洪涛,张建良,等.高炉焦炭石墨化程度及其影响因素的研究进展[J].钢铁, 2020, 55(7):23. (LI Ke-jiang, LI Hong-tao, ZHANG Jian-liang, et al. Research progress on the degree of graphitization of blast furnace coke and its influencing factors[J]. Iron and Steel, 2020, 55(7):23.)
[2] 李迎龙.浅析焦炭质量对高炉炼铁的影响[J].冶金与材料,2020,40(1):162. (LI Ying-long. Analysis of the influence of coke quality on blast furnace ironmaking[J]. Metallurgy and Materials, 2020, 40(1):162.)
[3] 李杰,程欢,梁英华,等.用于高炉炼铁的低CSR焦炭机理探讨[J].铸造技术,2019,40(8):778. (LI Jie, CHENG Huan, LIANG Ying-hua, et al. Discussion on the mechanism of low CSR coke used in blast furnace ironmaking[J]. Foundry Technology,2019, 40(8):778.)
[4] 王朋.浅议高炉喷吹煤粉技术发展[J].冶金管理,2020(16):56. (WANG Peng. Discussion on the development of blast furnace pulverized coal injection technology[J]. Metallurgical Management, 2020(16):56.)
[5] 马利科,赵鸿波,杨立春,等. 高炉喷吹煤粉的利用效率分析[J].辽宁科技大学学报,2020,43(4):303. (MA Li-ke, ZHAO Hong-bo, YANG Li-chun, et al. Utilization efficiency analysis of blast furnace injection coal powder[J]. Journal of Liaoning University of Science and Technology,2020, 43(4):303.)
[6] 黄椿朝,宁晓钧,王广伟,等.高炉喷吹用煤内摩擦角影响因素[J].钢铁,2020,55(8):107. (HUANG Chun-chao, NING Xiao-jun, WANG Guang-wei, et al. Influencing factors of theinternal fraction angle of PCI coal[J]. Iron and Steel, 2020,55(8):107.)
[7] 吴礼云,胡兰辉,王伟业.高富氧率对大型高炉节能的贡献[J].冶金能源,2020,39(6):18.(WU Li-yun,HU Lan-hui,WANG Wei-ye. Contribution of high oxygen enrichment rate to energy saving for large blast furnace[J]. Energy for Metallurgical Industry,2020,39(6):18.)
[8] 郝良元,王海洋,张建良,等. 高炉喷煤技术现状[C]//第十一届中国钢铁年会论文集.北京:中国金属学会,2017:934. (HAO Liang-yuan, WANG Hai-yang, ZHANG Jian-liang, et al. Current status of blast furnace coal injection technology [C]//Proceedings of the 11th China Iron and Steel Annual Conference. Beijing: The Chinese Society for Metals, 2017: 934.)
[9] 陈建巧,戴宪涛,徐爱波,等.莱钢5#1 080 m³高炉提高煤比实践[J].价值工程,2019,38(15):129. (CHEN Jian-qiao, DAI Xian-tao, XU Ai-bo, et al. Practice to increase coal ratio in Laigang 5#1 080 m³ blast furnace[J]. Value Engineering,2019,38(15):129.)
[10] 张朝环,刘潇,矫卫东,等.控限煤政策对京津冀燃煤锅炉的环境效益[J].环境工程,2018, 36(6):184. (ZHANG Chao-huan, LIU Xiao, JIAO Wei-dong, et al. Environmental benefits of coal-fired boilers in Beijing-Tianjin-Hebei coal-fired boilers based on the policy of controlling coal restrictions[J]. Environmental Engineering,2018,36(6):184.)
[11] 李鹏程,张建良,徐润生,等. 改质煤、兰炭和木炭作为高炉喷吹用燃料的基础特征[J].冶金能源,2015,34(3):41. (LI Peng-cheng, ZHANG Jian-liang, XU Run-sheng, et al. Basic characteristics of modified coal, blue charcoal and charcoal as fuel for blast furnace injection[J]. Energy for Metallurgical Industry,2015, 34(3):41.)
[12] 杨双平,郭拴全,张攀辉,等.兰炭对高炉混煤喷吹特性的影响[J].钢铁研究学报,2017, 29(3):201. (YANG Shuang-ping, GUO Shuan-quan, ZHANG Pan-hui, et al. Effects of semi-cokel on the injection characteristics of blast furnace mixed coal[J]. Journal of Iron and Steel Research, 2017, 29(3):201.)
[13] 毕传光,黄椿朝,宁晓钧,等.高炉喷吹兰炭的最佳配比[J].钢铁,2020,55(6):25. (BI Chuan-guang, HUANG Chun-chao, NING Xiao-jun, et al. The best proportion of blast furnace injection of semi-coke[J]. Iron and Steel,2020,55(6):25.)
[14] 彭政富,张建良,毕传光,等.焦粉与兰炭对高炉混煤燃烧特性的影响[J].钢铁,2019,54(12):10. (PENG Zheng-fu, ZHANG Jian-liang, BI Chuan-guang, et al. The influence of coke powder and semi-coke on the combustion characteristics of blast furnace blended coal[J]. Iron and Steel,2019, 54(12):10.)
[15] 李杰,李小静,李帮平,等.兰炭用作高炉喷吹燃料的试验分析[J].中国冶金,2019,29(12):14. (LI Jie, LI Xiao-jing, LI Bang-ping, et al. Experimental analysis of semi-coke using blast furnace fuel injection[J]. China Metallurgy, 2019, 29 (12): 14.)
[16] 邓孝天,杨双平.达钢高炉喷吹用煤配加兰炭粉煤的试验[J].冶金与材料,2018,38(1):18. (DENG Xiao-Tian, YANG Shuang-ping. Experiment of adding Galan charcoal and pulverized coal for blast furnace injection at Dagang[J]. Metallurgy and Materials,2018,38(1):18.)
[17] LI Xiang-guo, MA Bao-guo, XU Li, et al. Thermogravimetric analysis of the co-combustion of the blends with high ash coal and waste tyres[J]. Thermochimica Acta, 2006,441: 79.
[18] MA Bao-guo, LI Xiang-guo, XU Li, et al. Investigation on catalyzed combustion of high ash coal by thermogravimetric analysis[J]. Thermochimica Acta, 2006,445: 19.
[19] DING Liang, ZHANG Yong-qi, WANG Zhi-qing, et al. Interaction and its induced inhibiting or synergistic effects during co-gasification of coal char and biomass char[J]. Bioresource Technology, 2014,173: 11.
[20] WANG Peng, WANG Guang-wei, ZHANG Jian-liang, et al. Co-combustion characteristics and kinetic study of anthracite coal and palm kernel shell char[J]. Applied Thermal Engineering, 2018,143: 736.