面向长流程的富氢低碳炼铁技术路径分析

doi:10.13228/j.boyuan.issn0449-749x.20230102

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摘要高炉→转炉长流程是中国钢铁生产的主要流程。在“双碳”背景下,绿色低碳发展成为钢铁行业转型发展的核心命题,目前国内外主要采用以氢代碳的氢冶金低碳技术路线,国内路线以富氧高炉和氢基竖炉为主,推动着传统高炉向富氢全氧碳循环技术进行转变。结合氢冶金机理和现有的典型低碳工艺技术路线特点,分析了氢冶金技术路线的减排上限问题,从限制传统高炉减排的关键参数入手,提出了一种全氧富氢低碳还原熔化炉炼铁系统和炼铁方法。炼铁系统包括还原熔化炉、煤气除尘器、干燥器、CO₂分离器、电解水装置、风机、换热器、还原气备用储气罐、烟囱等设备,其中还原熔化炉自上而下依次包括间接还原区、软熔滴落区、焦炭燃烧及渣铁区;炼铁方法包括矿焦混装、间接还原区喷入由电解产生的绿氢与炉顶循环煤气组成的混合还原气、焦炭燃烧区鼓入纯氧、炉顶煤气CO₂回收、渣铁处理。通过设计新炉型和优化参数,使间接还原区金属化率达到85%~95%,大大降低吨铁冶炼碳耗。基于热力学理论计算、相关的物理试验数据和6种典型工艺流程的CO₂排放指标分析等研究成果,进一步阐述了新工艺的可行性及推广前景,新工艺采用全氧使自身反应器还原产生的煤气得以循环利用,达到CO₂排放降低50%以上的目标,实现绿色低碳冶金。

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	李海峰
	陈靖然
	王新东
	张彩东
	郑艾军
	王小艾

关键词 ：长流程, 氢冶金, 全氧, 低碳, 还原熔化炉

Abstract：The long ironmaking process with blast furnace and basic oxygen furnace (BF→BOF) is the leading process of steel production in China. Under the background of "dual carbon", green and low-carbon development has become the core proposition of the transformation and development for the iron and steel industry. At present, the hydrogen metallurgy low-carbon technology route based on hydrogen instead of carbon is mainly adopted at home and abroad, and the domestic route is mainly oxygen-rich BF and hydrogen-based shaft furnace (SF). It promotes the transformation of traditional BF to hydrogen-rich and oxygen and carbon-recycle (Hy-O-CR) technology. Combined with the mechanism of hydrogen metallurgy and the characteristics of the existing typical low-carbon process route, the upper limit of CO₂ emission reduction of hydrogen metallurgy technology route is analyzed. Starting with limiting the key parameters of CO₂ emission reduction in BF, the author puts forward a new ironmaking system and method of reduction smelting furnace (RSF) with Hy-O-CR. The ironmaking system includes many sets of equipment such as reduction smelting furnace, gas dust collector, dryer, CO₂ separator, electrolytic water device, blower, heat exchanger, storage tank of reduction gas, chimney, and other equipment, in which the reduction melting furnace includes an indirect reduction zone, a soft melting dripping zone, and a coke combustion zone from top to bottom. Ironmaking methods include coke and ore mixed charging, injection of the mixed reduction gas composed by electrolytic green hydrogen and circulating gas from the furnace top gas in the indirect reduction zone, injection of oxygen in the coke combustion zone, CO₂ recovery of the furnace top gas, slag and hot metal treatment. By designing the size of new furnace type and optimizing parameters, the metallization rate of ore in the indirect reduction zone is up to 85%-95%, and the carbon consumption per ton of hot metal is greatly reduced. Based on the theoretical calculation of thermodynamics, the relevant physical experimental data and the analysis of CO₂ emission indexes of six typical processes, the feasibility and popularization prospect of the new process are further expounded. Using the full-oxygen method to recycle the reduction gas produced by its own reactor, the process achieves the goal of reducing CO₂emissions by more than 50%, and realizes green and low-carbon metallurgy.

Key words： long process hydrogen metallurgy oxygen low-carbon reduction smelting furnace

收稿日期: 2023-03-06

引用本文:

李海峰, 陈靖然, 王新东, 张彩东, 郑艾军, 王小艾. 面向长流程的富氢低碳炼铁技术路径分析[J]. 钢铁, 2023, 58(10): 1-11. LI Haifeng, CHEN Jingran, WANG Xindong, ZHANG Caidong, ZHENG Aijun, WANG Xiaoai. Technical pathway analysis for low-carbon ironmaking with hydrogen-rich towards long-process[J]. Iron and Steel, 2023, 58(10): 1-11.

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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 Q, SHEN J L, XU L S.Carbon peak and low-carbon transition path of China's iron and steel industry[J]. Iron and Steel,2021,56(10):152.)
[2] 全球首座400立方米工业级富氢碳循环氧气高炉成果发布[N]. 中国冶金报,2022-11-23, 172 (A01).(Results of the world's first 400 m³ industrial grade hydrogen-rich carbon circulating oxygen blast furnace released[N]. China Metallurgical News, 2022-11-23, 172 (A01).)
[3] 李海峰,徐万仁,张晓辉,等. 富氢燃料喷吹高炉CO₂排放能力的理论分析[C]//第十三届中国钢铁年会论文集——炼铁与原燃料. 重庆:中国金属学会,2022:489.(LI H F, XU W R, ZHANG X H, et al. Theoretical analysis and practice of CO₂ emission capability under hydrogen-rich fuel injection in blast furnace[C]//Proceedings of the 13^th China Iron and Steel Annual Meeting—Ironmaking and Raw Fuel. Chongqing: The Chinese Society for Metals, 2022: 489.)
[4] 林圣华. 氢能在钢铁冶金中的应用及发展趋势研究[J]. 中国煤炭,2022,48(10):95. (LIN S H. Research on the application and development trend of hydrogen energy in iron and steel metallurgy[J]. China Coal, 2022, 48(10): 95.)
[5] 高建军,齐渊洪,严定鎏,等. 中国低碳炼铁技术的发展路径与关键技术问题[J].中国冶金,2021,31(9):64.(GAO J J, QI Y H, YAN D L, et al. Development path and key technical problems of low carbon ironmaking in China[J]. China Metallurgy, 2021, 31(9):64.)
[6] 上官方钦,周继程,王海风,等.气候变化与钢铁工业脱碳化发展[J].钢铁,2021,56(5):1.(SHANGGUAN F Q, ZHOU J C, WANG H F, et al. Climate change and decarbonization development of steel industry[J].Iron and Steel, 2021, 56(5):1.)
[7] 肖学文,王刚,李牧明,等. 基于富氢/含碳煤气用于冶炼还原剂的减碳策略分析[J]. 中国冶金,2023,33(5):121.(XIAO X W, WANG G, LI M M, et al. Analysis of carbon reduction strategy based on hydrogen-rich/carbon-containing gas used for smelting reductant[J]. China Metallurgy, 2023,33(5):121.)
[8] HEIDARI A, NIKNAHAD N, ILJANA M, et al. A review on the kinetics of iron ore reduction by hydrogen[J]. Materials, 2021, 14(24): 7540.
[9] 朱庆山. 超低碳炼铁技术路径分析[J].化工进展,2022,41(3):1391.(ZHU Q S. Development pathway analyses for various ironmaking routes with ultra-low CO₂ emission[J]. Chemical Industry and Engineering Progress, 2022, 41(3):1391.)
[10] 张福明,刘清梅. 高炉-转炉钢铁制造流程低碳技术发展与认识[J].中国冶金,2023,33(1):1.(ZHANG F M, LIU Q M. Development and understanding on low carbon technology based on BF-BOF steel manufacturing processes[J]. China Metallurgy, 2023, 33(1):1.)
[11] NISHIOKA K, UJISAWA Y, TONOMURA S, et al. Sustainable aspects of CO₂ ultimate reduction in the steelmaking process (COURSE50 Project), Part 1: Hydrogen reduction in the blast furnace[J]. Journal of Sustainable Metallurgy, 2016, 2(3): 200.
[12] WATAKABE S, MIYAGAWA K, MATSUZAKI S, et al. Operation trial of hydrogenous gas injection of COURSE50 project at an experimental blast furnace[J]. ISIJ International, 2013, 53(12): 2065.
[13] KAORU NAKANO,YUTAKA UJISAWA. Experimental blast furnace operation for CO₂ ultimate reduction[C]//ICSTI 2018. Austria Vienna:Austrian Society of Metallurgy and Materials,2018:245.
[14] HIRSCH ALEXANDRA,VAN DER STEL JAN,SERT DOMINIQUE. ULCOS top gas recycling blast furnace[C]//Proceedings' Abstracts of Asia Steel International Conference 2012. Beijing:The Chinese Society for Metals,2012:35.
[15] QUADER M A, AHMED S, DAWAL S Z, et al. Present needs, recent progress and future trends of energy-efficient Ultra-Low Carbon Dioxide (CO₂) Steelmaking (ULCOS) program[J]. Renewable and Sustainable Energy Reviews, 2016, 55: 537.
[16] 田宝山,张靖松.八钢氧气高炉高富氧冶炼工业试验探索[J]. 新疆钢铁,2020(4):1.(TIAN B S, ZHANG J S. Industrial test of high oxygen enriched smelting in oxygen blast furnace of Bayi Steel[J]. Xinjiang Iron and Steel, 2020 (4):1.)
[17] 田宝山. 八钢富氢碳循环高炉低碳冶炼技术研究与实践[J]. 新疆钢铁,2021(4):1.(TIAN B S. Research and practice on low carbon smelting technology of Hydrogen-rich carbon cycle blast furnace at Bayi Steel[J]. Xinjiang Iron and Steel, 2021 (4):1.)
[18] 袁万能,李涛,刘正新. 八钢低碳炼铁技术思路与实践[J]. 新疆钢铁,2022(1):1.(YUAN W N,LI T,LIU Z X. Thoughts and practice of low carbon ironmaking technology of Bayi Steel[J]. Xinjiang Iron and Steel, 2022(1):1.)
[19] 窦明辉,孙洋,韩嘉伟,等. 焦炭在H₂O+CO₂气氛中的溶损反应特性[J]. 钢铁, 2022, 57(7): 26. (DOU M H, SUN Y, HAN J W, et al. Solution loss characteristics of cokes in H₂O+CO₂ atmosphere[J]. Iron and Steel, 2022, 57(7):26.)
[20] 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. (LAN C C, LIU R, ZHANG S H, et al. Effect of H₂ volume percent on gasification reaction of coke in blast furnace[J]. Iron and Steel, 2020, 55(8): 100.)
[21] ZHAO Z, TANG J, CHU M, et al. Direct reduction swelling behavior of pellets in hydrogen-based shaft furnaces under typical atmospheres[J]. International Journal of Minerals, Metallurgy and Materials, 2022, 29(10): 1891.
[22] MAO X, GARG P, HU X, et al. Kinetic analysis of iron ore powder reaction with hydrogen-carbon monoxide[J]. International Journal of Minerals, Metallurgy and Materials, 2022, 29(10): 1882.
[23] SPREITZER D, SCHENK J. Reduction of iron oxides with hydrogen—A review[J]. Steel Research International, 2019, 90(10): 1900108.
[24] LI J, KUANG S, JIAO L, et al. Numerical modeling and analysis of hydrogen blast furnace ironmaking process[J]. Fuel, 2022, 323: 124368.
[25] 郄亚娜,靳亚涛,康媛,等. 高炉富氢对钒钛矿软熔滴落性能的影响[J].钢铁,2023,58(5):31.(QIE Y N, JIN Y T, KANG Y, et al. Influence of hydrogen-rich on the softening and melting property of blast furnace burden with vanadium and titanium[J]. Iron and Steel, 2023,58(5):31.)
[26] 王新东,赵志龙,李传民,等. 基于富氢焦炉煤气零重整的氢冶金工程技术[J]. 钢铁,2023,58(5):11.(WANG X D, ZHAO Z L, LI C M, et al. Hydrogen metallurgy engineering technologies based on zero reforming of hydrogen enriched coke oven gas[J]. Iron and Steel, 2023,58(5):11.)
[27] 于勇,王新东,罗志国,等. 全氧富氢低碳还原熔化炼铁系统及炼铁方法: 中国,ZL200210084753.X[P]. 2022-05-26[2023-01-31].(YU Y, WANG X D, LUO Z G, et al. Low-carbon Ironmaking System and Method in Reduction and Smelting Furnace with Pure Oxygen and Hydrogen-rich: China,ZL200210084753.X[P]. 2022-5-26[2023-01-31].)
[28] 刘锦周. 氧气高炉炉身煤气和循环煤气行为基础研究[D], 北京:北京科技大学,2015.(LIU J Z. Fundamental Research on Shaft Gas and Cycle Gas Behaviors in Oxygen Blast Furnace[D]. Beijing: University of Science and Technology Beijing, 2015.)
[29] 徐辉,邹宗树,余艾冰. Midrex还原竖炉反应的数值模拟[J]. 钢铁, 2008, 43(5): 12. (XU H, ZOU Z S, YU A B. A preliminary numerical simulation of Midrex reduction shaft furnace[J]. Iron and Steel, 2008, 43(5): 12.)
[30] 刘西财,石恩泽,赵子川,等. 氢基竖炉条件下制备不同金属化率球团研究[J]. 烧结球团,2022,47(1):1. (LIU X C, SHI E Z, ZHAO Z C, et al. Research on preparation of pellets with different metallization rates under hydrogen-based shaft furnace condition[J]. Sintering and Pelletizing, 2022, 47(1):1.)
[31] WENZEL W, GUDENAU H W, FUKUSHIMA T. Blast Furnace Operating Methods:USA, Patent 3,884,677[P]. 1975-05-20.
[32] 薛庆国,杨帆,张欣欣,等. 氧气高炉的发展历程及其在北京科技大学的研究进展[J].工程科学学报,2021,43(12):1579.(XUE Q G, YANG F, ZHANG X X, et al. Development of an oxygen blast furnace and its research progress in University of Science and Technology Beijing[J]. Chinese Journal of Engineering, 2021,43(12): 1579.)
[33] XIA Z, JIANG Z, ZHANG X, et al. The CO₂ reduction potential for the oxygen blast furnace with CO₂ capture and storage under hydrogen-enriched conditions[J]. International Journal of Greenhouse Gas Control, 2022, 121(12): 103793.