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二氧化碳绿色洁净炼钢技术及应用

姜娟娟 董凯 朱荣 魏光升

姜娟娟, 董凯, 朱荣, 魏光升. 二氧化碳绿色洁净炼钢技术及应用[J]. 工程科学学报. doi: 10.13374/j.issn2095-9389.2021.09.23.002
引用本文: 姜娟娟, 董凯, 朱荣, 魏光升. 二氧化碳绿色洁净炼钢技术及应用[J]. 工程科学学报. doi: 10.13374/j.issn2095-9389.2021.09.23.002
JIANG Juan-juan, DONG Kai, ZHU Rong, WEI Guang-sheng. Carbon dioxide green and clean steelmaking technology and its application[J]. Chinese Journal of Engineering. doi: 10.13374/j.issn2095-9389.2021.09.23.002
Citation: JIANG Juan-juan, DONG Kai, ZHU Rong, WEI Guang-sheng. Carbon dioxide green and clean steelmaking technology and its application[J]. Chinese Journal of Engineering. doi: 10.13374/j.issn2095-9389.2021.09.23.002

二氧化碳绿色洁净炼钢技术及应用

doi: 10.13374/j.issn2095-9389.2021.09.23.002
基金项目: 国家自然科学基金资助项目(51974024,52074024)
详细信息
    通讯作者:

    E-mail: dongkai@ustb.edu.cn

  • 中图分类号: TF71

Carbon dioxide green and clean steelmaking technology and its application

More Information
  • 摘要: 钢铁工业是CO2的排放大户,也是CO2资源潜在用户,通过研究证实了CO2能够在炼钢流程中实现高效利用。二氧化碳绿色洁净炼钢技术通过利用CO2的反应冷却、气泡增殖、弱氧化、强冲击等独有特性,解决了炼钢烟尘和炉渣固废源头减量,钢水磷、氮、氧洁净控制诸多炼钢工艺难题,构建了CO2炼钢理论体系,实现了CO2利用和炼钢生产工艺的结合。本技术作为“中国低碳原创技术”,促进了我国钢铁工业绿色低碳技术的发展,我国每年将减少炼钢固体污染物产生约1000万吨,温室气体减排约2600万吨,是建设“碳中和”国家的重要助力。

     

  • 图  1  烟尘产生机理

    Figure  1.  Dust generation mechanism

    图  2  火点区温度随CO2喷吹比例的变化

    Figure  2.  Fire point area temperature variation with the CO2 mixing ratio

    图  3  冶炼过程炼钢烟尘与TFe量变化

    Figure  3.  Variation of steelmaking dust and TFe in the smelting process

    图  4  炼钢粗灰产生量随CO2用量变化

    Figure  4.  Variation of coarse ash production in steelmaking with CO2 consumption

    图  5  熔池升温和脱磷的温度与时间

    Figure  5.  Temperature and time of bath heating and dephosphorization

    图  6  CO2比例分段动态调控软件界面

    Figure  6.  Software interface of CO2 ratio dynamic adjustment in stages

    图  7  脱磷转炉终点P的质量分数变化对比

    Figure  7.  Comparison of the P mass fraction change at the end point of the dephosphorization converter

    图  8  常规转炉终点P的质量分数变化对比

    Figure  8.  Comparison of the P mass fraction change at the end point of the conventional converter

    图  9  CO2吸附脱氮反应作用过程

    Figure  9.  CO2 adsorption denitrification reaction process

    图  10  不同介质CO产生量随吹炼进程变化

    Figure  10.  Variation of CO production in different media with the blowing process

    图  11  纯氧及CO2混合顶吹下CO分压

    Figure  11.  Partial pressure of CO under top blowing of pure oxygen and mixed CO2

    图  12  射流供氧−动能随CO2比例变化

    Figure  12.  Variation of the jet oxygen supply-kinetic energy with the CO2 ratio

    图  13  300 t转炉终点钢液碳氧积

    Figure  13.  End-point carbon and oxygen equilibrium in the liquid steel of the 300 t converter

    图  14  电弧炉终点钢液碳氧积

    Figure  14.  End-point carbon and oxygen equilibrium in the liquid steel of the electric arc furnace

    图  15  “工业尾气→CO2回收→炼钢利用”的CO2工业大规模利用新途径

    Figure  15.  New ways of large-scale industrial utilization of CO2 in “industrial tail gas → CO2 recovery → steelmaking utilization”

    表  1  各元素与CO2反应热力学数据

    Table  1.   Thermodynamic data of the reaction between elements and carbon dioxide

    Reaction equationGϴ/(J·mol−1)GϴT=1923 K)/(J·mol−1HT = 298 K)/(J·mol−1
    [C] + CO2(g) = 2CO(g)140170 − 125.60T−101358.80172520.00
    2/3[Al] + CO2(g) = 1/3 (Al2O3) + CO(g)−238845 + 41.75T−158559.75−275120.00
    1/2[Si] + CO2(g) = 1/2(SiO2)(s) + CO(g)−88430 + 0.80T−86891.60−172180.00
    [Mn] + CO2(g) = (MnO) + CO(g)−126880 + 39.98T−49998.46−101910.00
    2/5[P] + CO2(g) = 1/5(P2O5) + CO(g)91555 − 16.86T59133.22−26620.00
    2/5[P] + CO2(g) + 4/5CaO = 1/5(4CaO·P2O5) + CO(g)−144446 + 43.22T−61333.94−55820.00
    Fe(l) + CO2(g) = (FeO) + CO(g)48980 − 40.62T−29132.2640370.00
    下载: 导出CSV
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  • 收稿日期:  2021-09-23
  • 网络出版日期:  2021-10-29

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