大喷煤条件下鞍钢高炉喷吹煤粉的炉内利用率

doi:10.13228/j.boyuan.issn1006-9356.20210734

摘要
图/表
参考文献
相关文章 (12)

全文: PDF (7187 KB) HTML (0 KB)
输出: BibTeX | EndNote (RIS)

摘要为了探究目前大喷煤条件下煤粉喷入高炉后在炉内的利用情况,对鞍钢高炉除尘灰进行收集、取样和测试;同时采用岩相分析手段观察分析高炉炉尘中未燃煤粉、焦炭和矿物质灰渣的组成及微观形貌,定量计算出除尘灰中不同含碳物质的质量分数。结果表明,整体来看,鞍钢4座3 200 m³级别的大高炉喷吹煤粉在炉内的利用率要低于其余4座小高炉,说明高炉在提高煤比的同时,还需重点关注煤粉的燃尽率。通过调节各项操作参数来提高煤粉在高炉内的利用率,可节约生产成本并保证高炉的顺行稳产。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	作者相关文章
	曾宇
	姜喆
	张建良
	张楠
	滕海鹏
	王广伟

关键词 ：高炉喷煤, 炉尘, 未燃煤粉, 岩相分析, 利用率

Abstract：In order to explore the utilization of pulverized coal under current large-scale coal injection conditions, the dust collection,sampling and test was carried out for Ansteel blast furnace. Through laboratory testing, the carbon mass fraction of different substances in dust were tested and calculated quantitatively and the unburned pulverized coal, coke, mineral composition and microstructure of dust were analyzed by petrographic analysis methods. The results show that the utilization rate of pulverized coal of four 3 200 m³ blast furnaces are lower than that of the other four blast furnaces in Ansteel, indicating that coal burnout rate should be paid more attention while increasing the coal ratio. By adjusting the operation parameters, the utilization rate of pulverized coal can be improved, production cost can be saved and stable production of blast furnace can be guaranteed.

Key words： blast furnace coal injection furnace dust unburned pulverized coal petrographic analysis utilization rate

收稿日期: 2021-11-19

基金资助:国家自然科学基金资助项目(51774032)

通讯作者: 张建良(1965—), 男, 博士, 教授; E-mailzhang.jianliang@hotmail.com

作者简介: 曾宇(1980—), 男, 硕士, 高级工程师; E-mail: zengyuneu@sina.com;

引用本文:

曾宇, 姜喆, 张建良, 张楠, 滕海鹏, 王广伟. 大喷煤条件下鞍钢高炉喷吹煤粉的炉内利用率[J]. 中国冶金, 2022, 32(3): 61-67. ZENG Yu, JIANG Zhe, ZHANG Jian-liang, ZHANG Nan, TENG Hai-peng, WANG Guang-wei. Utilization rate of coal injection for blast furnace in Ansteel under the large injection condition[J]. China Metallurgy, 2022, 32(3): 61-67.

链接本文:

http://www.zgyj.ac.cn/CN/10.13228/j.boyuan.issn1006-9356.20210734 或 http://www.zgyj.ac.cn/CN/Y2022/V32/I3/61

[1]	乔军强,张少宁,李燕江,等.神东烟煤用于高炉喷吹的可行性分析[J].煤炭科学技术,2020,48(增刊1):219.
[2]	李伟,杨晓乐,程磊,等.不同高炉煤粉的基础性能分析[J].中国冶金,2019,29(11):67.
[3]	高鹏,赵丹宁,王平,等.马钢4 000 m3高炉喷吹煤粉燃烧性能研究与应用[J].钢铁,2018,53(12):10.
[4]	胡翔宇,张建良,刘征建,等.渣相组分对高炉炉缸死焦堆滞留率的影响[J].钢铁,2020,55(10):15.
[5]	兰臣臣,刘然,张淑会,等.高炉内H2体积分数对焦炭气化反应的影响[J].钢铁,2020,55(8):100.
[6]	张建良,孙敏敏,李克江,等.高炉焦炭在铁水中溶解行为研究现状及展望[J].钢铁,2020,55(4):1.
[7]	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.
[8]	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.
[9]	王海洋,张建良,王广伟,等.褐煤用于高炉喷吹的可行性[J].钢铁研究学报,2017,29(1):39.
[10]	徐万仁,吴铿,张龙来,等.高炉大喷煤时煤粉利用率的研究[J].钢铁,2006,41(4):10.
[11]	丁汝才,吴铿,尹晓莹,等.首秦1号高炉降低燃料比和提高喷煤比的工业实践[J].钢铁,2009,44(3):18.
[12]	丁汝才,吴铿,吴玮璐,等.首秦1号高炉不同喷煤比条件下炉尘灰中含碳物质的研究[J].煤炭学报,2008(11):1301.
[13]	屈俊杰,吴铿,王崇茂,等.喷煤对COREX熔融气化炉风口前理论燃烧温度的影响[J].钢铁,2012,47(6):14.
[14]	ZOU C, HE J Y, ZHAO J X, et al. Structure and reactivity of low-rank coal chars prepared from fluidized bed and moving bed pyrolyzers and the potential for using them in pulverized coal injection (PCI)[J]. Metallurgical and Materials Transactions B, 2019, 50(5):2304.
[15]	孟祥龙,张福明,曹朝真.首钢高炉喷煤技术发展与创新[J].中国冶金,2014, 24(3):21.
[16]	李杰,宋灿阳,李小静,等.高炉喷吹煤粉燃烧性与反应性的研究与应用[J].中国冶金,2019,29(1):8.
[17]	WANG G W, ZHANG J L, SHAO J G, et al. Thermal behavior and kinetic analysis of co-combustion of waste biomass/low rank coal blends[J]. Energy Conversion and Management, 2016, 124:124.