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Construction and verification of energy and mass transfer model for HIsmelt smelting reduction main reactor |
PANG Jing1, WANG Zhen-yang 1, ZHANG Jian-liang1,2, ZHANG Shu-shi1 |
1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2. School of Chemical Engineering, The University of Queensland, St Lucia 4072, Australia |
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Abstract HIsmelt smelting reduction ironmaking process takes iron ore powder and coal powder as raw materials, and does not require sintering, pelletizing and coking in the process. Compared with the blast furnace ironmaking process, it has the advantages of carbon reduction and emission reduction. Clearing the process of energy and mass transfer has guiding significance for the actual production of HIsmelt smelting reduction ironmaking. Based on the material balance and heat balance equation, the material and energy balance of input and output HIsmelt main reactor were calculated, and the energy and mass transfer model was established. The model was corrected by mass distribution ratio of each element between slag and iron calculated by Equilib module in FactSage and the actual production data. The model could calculate the effects of raw material and fuel composition, mass ratio of iron ore to coal, secondary combustion rate, hot air oxygen content and other parameters on the main smelting indexes such as slag iron temperature, slag composition, hot air volume and gas volume. Secondly, based on the model, the material balance and heat balance were calculated. According to actual production data, the calculation results of model were verified, and the results show that the model was highly consistent with the actual production data. The effect of the mass ratio of iron ore to coal on smelting was studied. When the mass ratio of iron ore to coal is between 1.39 and 1.45, a reduction of 0.1 in the mass ratio of iron ore to coal will reduce the secondary combustion rate by 0.23%, resulting in a lower utilization rate of gas chemical energy, while more hot air is needed to make the pulverized coal burn, and the amount of hot air and gas production increases, which can be improved by appropriately increasing the oxygen content of the hot air to improve the secondary combustion rate and reduce the amount of gas. The decrease of the mass ratio of iron ore to coal by 0.001 increases the slag iron temperature by 3.76 ℃, which is conducive to the subsequent processing of molten iron. However, the increase in hot metal temperature reduces the ratio of elemental Fe in the iron and slag, which increases the mass percent of FeO of slag by 0.026% and increases the iron loss, which can be reduced by reducing the amount of oxygen-rich hot air blowing to reduce the amount of iron oxidation, thus reducing the iron loss.
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Received: 25 February 2022
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[1] 张琦, 沈佳林, 许立松. 中国钢铁工业碳达峰及低碳转型路径[J]. 钢铁, 2021, 56(10): 152. (ZHANG Qi, SHEN Jia-lin, XU Li-song. Carbon peak and low-carbon transition path of China's iron and steel industry[J]. Iron and Steel, 2021, 56(10): 152.) [2] 董金池, 汪旭颖, 蔡博峰, 等. 中国钢铁行业CO2减排技术及成本研究[J]. 环境工程, 2021, 39(10): 23.(DONG Jin-chi, WANG Xun-ying, CAI Bo-feng, et al. Mitigation technologies and marginal abatement cost for iron and steel industry in China[J]. Environment Engineering, 2021, 39(10):23.) [3] 林高平,王建跃,戴坚.绿色低碳炼铁技术展望[J].冶金能源,2017,36(s1):10.(LIN Gao-ping, WANG Jian-yue, DAI Jian.Prospect of green low carbon ironmaking technology[J].Energy for Metallurgical Industry,,2017,36(s1):10.) [4] 杨天钧, 张建良. 我国炼铁生产的方向:高效节能 环保低成本[J]. 炼铁, 2014, 33(3): 1.(YANG Tian-jun, ZHANG Jian-liang. Ironmaking producyion trend in China:High efficiency, energy conservation, environment protection and low cost[J]. Ironmaking, 2014, 33(3): 1.) [5] Orth A, Anastasijevic N, Eichberger H. Low CO2 emission technologies for iron and steelmaking as well as titania slag production[J]. Minerals Engineering, 2007, 20(9):854. [6] Fruehan R. New steelmaking processes: Drivers, requirements and potential impact[J]. Ironmaking and Steelmaking, 2005, 32(1): 3. [7] 田伟健,李辉,全魁,等.长流程钢铁企业的碳代谢模型与碳排放分析[J].冶金能源,2020,39(1):3.(TIAN Wei-jian,LI Hui,QUAN Kui,et al. Carbon metabolism model and carbon emission analysis of the integrated iron and steel enterprises[J].Energy for Metallurgical Industry,2020,39(1):3.) [8] Ho M T, Bustamante A, Wiley D E. Comparison of CO2 capture economics for iron and steel mills[J]. International Journal of Greenhouse Gas Control, 2013, 19: 145. [9] Schenk J L. Recent status of fluidized bed technologies for producing iron input materials for steelmaking[J]. Particuology, 2011, 9(1): 14. [10] 张利娜,李新创,李冰,等.基于钢铁企业的技术碳减排成本计算方法研究及应用[J].冶金能源,2020,39(4):3.(ZHANG Li-na,LI Xin-chuang,LI Bing,et al. Research and application on calculation method of technical carbon emission reduction cost of iron and steel enterprises[J].Energy for Metallurgical Industry,2020,39(4):3.) [11] 张建良, 李克江, 张冠琪, 等. 山东墨龙HIsmelt工艺的技术创新及最新生产指标[J]. 炼铁, 2018, 37(2): 56.(ZHANG Jian-liang, LI Ke-jiang, ZHANG Guan-qi, et al. The technological innovation and the latest production index of Shandong Molong HIsmelt process[J]. Ironmaking, 2018, 37(2):56.) [12] 张建良, 张冠琪, 刘征建, 等. 山东墨龙HIsmelt工艺生产运行概况及主要特点[J]. 中国冶金, 2018, 28(5): 37.(ZHANG Jian-liang, ZHANG Guan-qi, LIU Zheng-jian, et al. Production overview and main characteristics of HIsmelt process in Shandong Molong[J]. China Metallurgy, 2018, 28(5): 37.) [13] 王新东,郝良元. 现代炼铁工艺及低碳发展方向分析[J]. 中国冶金,2021,31(5):1.(WANG Xin-dong,HAO Liang-yuan. Analysis of modern ironmaking technology and low-carbon development direction[J]. China Metallurgy,2021,31(5):1.) [14] Stephens D, Tabib M, Schwarz M P, et al. CFD simulation of bath dynamics in the HIsmelt smelt reduction vessel for iron production[J]. Progress in Computational Fluid Dynamics, 2012, 12(2/3): 196. [15] 李瑞雨, 王振阳, 宗燕兵, 等. HIsmelt主反应器传热数值模拟研究进展[J]. 钢铁研究学报, 2022, 34(2): 111.(LI Rui-yu, WANG Zhen-yang, ZONG Yan-bing, et al, Research status and prospect of numerical simulation of heat transfer in HIsmelt main reactor[J]. Journal of Iron and Steel Research, 2022, 34(2): 111) [16] Sripriya R, Peeters T, Meijer K, et al. Computational fluid dynamics and combustion modelling of HIsarna incinerator[J]. Ironmaking and Steelmaking, 2016, 43(3): 192. [17] MA H B, JIAO K X, ZHANG J L. The influence of basicity and TiO2 on the crystallization behavior of high Ti-bearing slags[J]. Crystengcomm, 2020, 22(2): 361. [18] MA H B, JIAO K X, ZHANG J L, et al. Viscosity of CaO-MgO-Al2O3-SiO2-TiO2-FeO slag with varying TiO2 content: The effect of crystallization on viscosity abrupt behavior[J]. Ceramics International, 2021, 47(12):17445. [19] 陆亚男,吴胜利,王来信,等. 炉渣成分对COREX铁水脱硫效果的影响[J]. 钢铁,2019,54(9):33.(LU Ya-nan,WU Sheng-li,WANG Lai-xin,et al. Analysis of chemical compositions of slag affecting desulphurization in hot metal of COREX process[J]. Iron and Steel,2019,54(9):33.) [20] 孟玉杰, 曹朝真, 梅丛华, 等. HIsmelt工艺的内衬寿命与煤气利用问题探析[J]. 炼铁, 2018, 37(3): 59.(MENG Yu-jie, CAO Chao-zhen, MEI Cong-hua, et al. Analysis on the lining life and gas utilization of HIsmelt process[J]. Ironmaking, 2018, 37(3): 59.) [21] 王敏, 任荣霞, 董洪旺, 等. 熔融还原炼铁最新技术及工艺路线选择探讨[J]. 钢铁, 2020, 55(8): 145.(WANG Min, REN Rong-xia, DONG Hong-wang, et al. Latest technology of melting reduction ironmaking process and discussion of process route choice[J]. Iron and Steel, 2020, 55(8): 145.) [22] 贾利军, 汤彦玲. HIsmelt熔融还原炼铁技术的工艺煤耗及生产实践[J]. 山东冶金, 2021, 43(4): 3.(JIA Li-jun, TANG Yan-ling. Coal consumption and production practice of the HIsmelt smelting reduction ironmaking technology[J]. Shandong Metallurgy, 2021, 43(4): 3.) [23] 李林. HIsmelt炼铁工艺的基础研究[D]. 北京:北京科技大学, 2020.(LI Lin. Basic Research on HIsmelt Ironmaking Process[D]. Beijing: University of Science and Technology Beijing, 2020.) [24] 李鹏涛, 孙红刚, 李坚强, 等. 不同组成Al2O3-Cr2O3砖的抗熔融还原炼铁渣行为研究[J]. 耐火材料, 2016, 50(5):352.(LI Peng-tao, SUN Hong-gang, LI Jian-qiang, et al. Study on melt reduction slag resistance behavior of Al2O3-Cr2O3 bricks with different compositions[J]. Naihuo Cailiao, 2016, 50(5): 352.) [25] 李强, 高攀, 冯明霞, 等. 熔融还原高温煤气余热改质的数值分析[J]. 中南大学学报(自然科学版),2013,44(6):2575.(LI Qiang, GAO Pan, FENG Ming-xia, et al. Numerical analyses on reforming of high-temperature gas of smelting reduction using itself exhaust heat[J]. Journal of Central South University(Natural Science), 2013, 44(6): 2575.) [26] Htet T T, Yan Z M, Spooner S, et al. Gasification and physical-chemical characteristics of carbonaceous materials in relation to HIsarna ironmaking process[J]. Fuel, 2021, 289: 119890. [27] 张建良, 刘征建, 杨天钧. 非高炉炼铁[M]. 北京: 冶金工业出版社, 2015.(ZHANG Jian-liang, LIU Zheng-jian, YANG Tian-jun. Non-blast Furnace Ironmaking[M]. Beijing: Metallurgical Industry Press, 2015.) [28] 史成斌, 郭汉杰, 丁汝才, 等. CaO-SiO2-MgO-Al2O3渣系与碳饱和铁液间硫分配比的热力学模型[J]. 过程工程学报, 2010, 10(增刊1): 158.(SHI Cheng-bin, GUO Han-jie, DING Ru-cai, et al. A thermodynamic model for calculation of sulphur distribution ratio between CaO·SiO2·MgO·Al2O3 slags and carbon saturated hot metal[J]. The Chinese Journal of Process Engineering, 2010, 10(s1): 158.) [29] 韩凯峰, 韩少伟, 朱良, 等. 基于共存理论的转炉脱磷热力学分析[J]. 中国冶金, 2021, 31(10): 17.(HAN Kai-feng, HAN Shao-wei, ZHU Liang, et al.Thermodynamic analysis of dephosphorization in converter based on ion and molecule coexistence theory[J]. China Metallurgy, 2021, 31(10): 17.) [30] 戴诗凡, 吴伟, 马登, 等. 提高炉渣中MnO向钢中传递的试验[J]. 钢铁, 2017, 52(8): 35.(DAI Shi-fan, WU Wei, MA Deng, et al. Experiment on improving transfer of MnO in slag to molten steel[J]. Iron and Steel, 2017, 52(8): 35.) |
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