模拟的富氢高炉条件下铁焦气化、铁焦与焦炭共气化行为的研究

祝凯; 陈珠明; 叶水鑫; 耿淑华; 张玉文; 鲁雄刚

doi:10.1007/s12613-022-2429-0

Volume 29 Issue 10

Oct. 2022

Turn off MathJax

图(19) / 表(4)

数据统计

计量

文章访问数: 6642
HTML全文浏览量: 2930
PDF下载量: 125
被引次数: 0

文章导航 > 矿物冶金与材料学报（英文） > 2022 > 29(10): 1839-1850

Kai Zhu, Zhuming Chen, Shuixin Ye, Shuhua Geng, Yuwen Zhang, and Xionggang Lu, Gasification of iron coke and cogasification behavior of iron coke and coke under simulated hydrogen-rich blast furnace condition, Int. J. Miner. Metall. Mater., 29(2022), No. 10, pp. 1839-1850. https://doi.org/10.1007/s12613-022-2429-0

Cite this article as:

Kai Zhu, Zhuming Chen, Shuixin Ye, Shuhua Geng, Yuwen Zhang, and Xionggang Lu, Gasification of iron coke and cogasification behavior of iron coke and coke under simulated hydrogen-rich blast furnace condition, Int. J. Miner. Metall. Mater., 29(2022), No. 10, pp. 1839-1850. https://doi.org/10.1007/s12613-022-2429-0

Citation:

PDF( 5542 KB)

引用本文 PDF XML SpringerLink

研究论文

模拟的富氢高炉条件下铁焦气化、铁焦与焦炭共气化行为的研究

上海大学省部共建高品质特殊钢冶金与制备国家重点实验室，上海市钢铁冶金新技术开发应用重点实验室，上海大学材料科学与工程学院, 上海 200444，中国

通讯作者:
祝凯 E-mail: kaizhu@shu.edu.cn

鲁雄刚 E-mail: luxg@shu.edu.cn

文章亮点

(1) 系统研究了铁矿粉配比对铁焦气化行为的影响。

(2) 明析了铁焦在传统100%CO₂和富氢气氛60%CO₂+40%H₂O 气氛下初始气化差异与共气化机理。

(3)探究了铁焦在富氢高炉气氛下对焦炭的影响。

中文摘要

氢冶金是实现低碳排放目的有效方法，为探索铁焦在富氢高炉中的应用，本文系统研究了铁焦在CO₂和H₂O(g)+CO₂气氛中的初始气化温度及其与焦炭的共气化反应机理。以焦煤和铁矿粉为主要原料，在实验室制备适用于富氢高炉气氛的铁焦。采用焦炭反应性(CRI)和反应后强度(CSR)测试了铁焦的性能，并通过SEM和XRD讨论了铁焦与焦炭气化过程中物相和形貌的演变。实验结果表明，在CO₂和H₂O(g)气氛下，随着铁矿粉含量的增加，铁焦的初始气化温度降低；在40vol%H₂O+60vol%CO₂气氛下，添加3wt%铁矿粉的铁焦CRI达到58.7%，CSR达到56.5%。由于铁的催化作用，铁焦的反应能力大于焦炭，铁焦优先气化而导致CRI降低，铁焦和焦炭共气化时CSR增加。铁焦可以保护焦炭的骨架功能。

关键词:

Research Article

Gasification of iron coke and cogasification behavior of iron coke and coke under simulated hydrogen-rich blast furnace condition

+ Author Affiliations

Abstract

Abstract

To explore the iron coke application in hydrogen-rich blast furnace, which is an effective method to achieve the purpose of low carbon emissions, the initial gasification temperature of iron coke in CO₂ and H₂O atmosphere and its cogasification reaction mechanism with coke were systematically studied. Iron coke was prepared under laboratory conditions, with a 0–7wt% iron ore powder addition. The properties of iron cokes were tested by coke reactivity index (CRI) and coke strength after reaction (CSR), and their phases and morphology were evolution discussed by scanning electron microscopy and X-ray diffraction analysis. The results indicated that the initial gasification temperature of iron coke decreased with the increase in the iron ore powder content under the CO₂ and H₂O_(g) atmosphere. In the 40vol% H₂O + 60vol% CO₂ atmosphere, CRI of iron coke with the addition of 3wt% iron ore powder reached 58.7%, and its CSR reached 56.5%. Because of the catalytic action of iron, the reaction capacity of iron coke was greater than that of coke. As iron coke was preferentially gasified, the CRI and CSR of coke were reduced and increased, respectively, when iron coke and coke were cogasified. The results showed that the skeleton function of the coke can be protected by iron coke.
- iron coke;
- hydrogen-rich blast furnace;
- coke gasification;
- coke reactivity index;
- coke strength after reaction

FullText(HTML)

Supplements(0)

References(35)

References

[1]	C. Yilmaz, J. Wendelstorf, and T. Turek, Modeling and simulation of hydrogen injection into a blast furnace to reduce carbon dioxide emissions, J. Clean. Prod., 154(2017), p. 488. doi: 10.1016/j.jclepro.2017.03.162
[2]	T. Nishi, H. Haraguchi, and T. Okuhara, Deterioration of coke strength by CO₂ gasification at high temperature, Tetsu-to-Hagane, 73(1987), No. 15, p. 1869. doi: 10.2355/tetsutohagane1955.73.15_1869
[3]	T. Hilding, S. Gupta, V. Sahajwalla, B. Björkman, and J.O. Wikström, Degradation behaviour of a high CSR coke in an experimental blast furnace: Effect of carbon structure and alkali reactions, ISIJ Int., 45(2005), No. 7, p. 1041. doi: 10.2355/isijinternational.45.1041
[4]	Y. Kashihara, Y. Sawa, and M. Sato, Effect of hydrogen addition on reduction behavior of ore layer mixed with coke, ISIJ Int., 52(2012), No. 11, p. 1979. doi: 10.2355/isijinternational.52.1979
[5]	S.Z. Shi, S. Lu, X.G. Bi, P. Li, Y.G. Mao, and Q. Zheng, Decreasing of reaction beginning temperature of iron coke and its mechanism, Iron Steel, 50(2015), No. 7, p. 15.
[6]	S.Z. Shi, Y.H. Luo, X.G. Bi, P. Li, Y.G. Mao, Q. Zheng, G.E. Wang, and W. Liu, Factors influencing initial reaction temperature of ferro-coke, J. Wuhan Univ. Sci. Technol., 39(2016), No. 2, p. 98.
[7]	M. Taichi and K. Eiki, Utilization of ores with high combined water content for ore–carbon composite and iron coke, ISIJ Int., 51(2011), No. 8, p. 1220. doi: 10.2355/isijinternational.51.1220
[8]	R.S. Xu, H. Zheng, W. Wang, J. Schenk, and Z.L. Xue, Influence of iron minerals on the volume, strength, and CO₂ gasification of ferro-coke, Energy Fuels, 32(2018), No. 12, p. 12118. doi: 10.1021/acs.energyfuels.8b02644
[9]	R.S. Xu, S.L. Deng, H. Zheng, W. Wang, M.M. Song, W. Xu, and F.F. Wang, Influence of initial iron ore particle size on CO₂ gasification behavior and strength of ferro-coke, J. Iron Steel Res. Int., 27(2020), No. 8, p. 875. doi: 10.1007/s42243-020-00454-5
[10]	H.W. Ren, M.S. Chu, Q.Q. Lü, Z.G. Liu, and M.X. Zhang, Mechanism and influence on iron-coke property by iron ore powder, Iron Steel, 53(2018), No. 8, p. 21.
[11]	K. Higuchi, S.J. Nomura, K. Kunitomo, H. Yokoyama, and M. Naito, Enhancement of low-temperature gasification and reduction by using iron coke in laboratory scale tests, ISIJ Int., 51(2011), No. 8, p. 1308. doi: 10.2355/isijinternational.51.1308
[12]	H.X. Zhang, X.G. Bi, S.Z. Shi, Q. Wu, C.Q. Sun, Y.R. Ma, X.M. Cheng, and P. Li, Influence of iron ore addition into coal blend for coke-making on coke properties, J. Wuhan Univ. Sci. Technol., 37(2014), No. 2, p. 91.
[13]	H.T Wang, Study on Preparation Process and Metallurgy Properties of New Ironmaking Material—Iron Coke Hot Briquette [Dissertation], Northeastern University, Shenyang, 2015, p. 33.
[14]	J.W. Bao, M.S. Chu, Z.G. Liu, D. Han, L.G. Cao, and J. Guo, Research progress on preparation and application of iron coke in blast furnace, Iron Steel, 55(2020), No. 8, p. 38.
[15]	P. Li, Fundamental Research on Properties of Highly Reactive Ferro-coke and its Application in Blast Furnace [Dissertation], Wuhan University of Science and Technology, Wuhan, 2016, p. 44.
[16]	H.T. Wang, M.S. Chu, W.W. Zhao, R. Wang, Z.G. Liu, and J. Tang, Fundamental research on iron coke hot briquette – A new type burden used in blast furnace, Ironmaking Steelmaking, 43(2016), No. 8, p. 571. doi: 10.1080/03019233.2016.1152344
[17]	H.T. Wang, M.S. Chu, W. Zhao, Z.G. Liu, and Y. Ge, Investigation on gasification reaction behavior and kinetics of iron coke hot briquette under isothermal conditions [in], The 9th Annual Youth Academic Meeting of China Metal Society, Ma’anshan, 2018, p. 469.
[18]	H.T. Wang, M.S. Chu, Z.W. Ying, W. Zhao, Z.G. Liu, and J. Tang, Current status on ferro coke technology development, Sintering Pelletizing, 42(2017), No. 4, p. 44.
[19]	P. Li, X.G. Bi, S.Z. Shi, H.X. Zhang, and J.D. Zhou, Research and analysis on gasification reaction behavior of iron coke in laboratory, J. Iron Steel Res., 27(2015), No. 12, p. 10.
[20]	H.X. Zhang. The Research of Reaction Mechanism of Ferro-coke Gasification [Dissertation], Wuhan University of Science and Technology, Wuhan, 2015, p. 61.
[21]	S. Nomura, K. Higuchi, K. Kunitomo, and M. Naito, Reaction behavior of formed iron coke and its effect on decreasing thermal reserve zone temperature in blast furnace, ISIJ Int., 50(2010), No. 10, p. 1388. doi: 10.2355/isijinternational.50.1388
[22]	F.C. Meng and Z.S. Zou, Influence of thermal reserve zone temperature in blast furnace on gas utilization rate, J. Northeasten Univ. Nat. Sc., 39(2018), No. 7, p. 985.
[23]	R.S. Xu, B.W. Dai, W. Wang, J. Schenk, A. Bhattacharyya, and Z.L. Xue, Gasification reactivity and structure evolution of metallurgical coke under H₂O/CO₂ atmosphere, Energy Fuels, 32(2018), No. 2, p. 1188. doi: 10.1021/acs.energyfuels.7b03023
[24]	S.C. Yu, Research on Gasification of Coke with H₂O under Alkali Condition [Dissertation], Anhui University of Technology, Ma'anshan, 2017, p. 48.
[25]	C.C. Lan, Q. Lyu, X.J. Liu, M.F. Jiang, Y.N. Qie, and S.H. Zhang, Thermodynamic and kinetic behaviors of coke gasification in N₂–CO–CO₂–H₂–H₂O, Int. J. Hydrogen Energy, 43(2018), No. 42, p. 19405. doi: 10.1016/j.ijhydene.2018.08.216
[26]	M.M. Sun, J.L. Zhang, K.J. Li, K. Guo, Z.M. Wang, and C.H. Jiang, Gasification kinetics of bulk coke in the CO₂/CO/H₂/H₂O/N₂ system simulating the atmosphere in the industrial blast furnace, Int. J. Miner. Metall. Mater., 26(2019), No. 10, p. 1247. doi: 10.1007/s12613-019-1846-1
[27]	D.W. Kong, B.Z. Yan, and Y.X. Chen, Effect of starting temperature of coke solution loss reaction on carbon consumption of blast furnace, Energy Metall. Ind., 33(2014), No. 4, p. 16.
[28]	C.C. Lan, X.J. Liu, Y.N. Qie, Q. Lyu, M.F. Jiang, and S.H. Zhang, Effect of potassium carbonate on the kinetic behaviors of coke gasification in a hydrogen-rich blast furnace, Fuel Process. Technol., 193(2019), p. 180. doi: 10.1016/j.fuproc.2019.05.012
[29]	Y. Wan, Q.Q. Zhao, Y.C. Wu, D.D. Fan, J. Li, L.Q. Zhang, and W.S. Wang, A Method for Steam Generation of Device for Measuring Coke Reactivity, Chinese Patent, Appl. 108131654, 2017.
[30]	J.H. Yang, H.G. Du, Z.F. Qian, and P. Cui, Reactivity of particulate coke, J. Northeastern Univ. Nat. Sci., 20(1999), No. 3, p. 286.
[31]	J.G. Liu, Influence of Iron Ore Powder Content on the Starting Temperature of Gasification Reaction of the Carbon Iron Composite [Dissertation], Taiyuan University of Technology, Taiyuan, 2014, p. 49.
[32]	Q. Zheng, The Development of High Reactive Ferro-coke and the Study of Reaction Mechanism [Dissertation], Wuhan University of Science and Technology, Wuhan, 2017, p. 50.
[33]	W.J. Massman, A review of the molecular diffusivities of H₂O, CO₂, CH₄, CO, O₃, SO₂, NH₃, N₂O, NO, and NO₂ in air O₂ and N₂ near STP, Atmos. Environ., 32(1998), No. 6, p. 1111. doi: 10.1016/S1352-2310(97)00391-9
[34]	S.M. Shin and S.M. Jung, Gasification effect of metallurgical coke with CO₂ and H₂O on the porosity and macrostrength in the temperature range of 1100 to 1500°C, Energy Fuels, 29(2015), No. 10, p. 6849. doi: 10.1021/acs.energyfuels.5b01235
[35]	S.X. Qiu, The Basic Theory on the Preparation of Iron Coke and Characterization of Its Structure and Property [Dissertation], Chongqing University, Chongqing, 2019, p. 59.