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Lei Wang, Peimin Guo, Lingbing Kong, and Pei Zhao, Industrial application prospects and key issues of the pure-hydrogen reduction process, Int. J. Miner. Metall. Mater.,(2022). https://doi.org/10.1007/s12613-022-2478-4
Cite this article as:
Lei Wang, Peimin Guo, Lingbing Kong, and Pei Zhao, Industrial application prospects and key issues of the pure-hydrogen reduction process, Int. J. Miner. Metall. Mater.,(2022). https://doi.org/10.1007/s12613-022-2478-4
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研究论文

纯氢还原工艺的工业应用前景及关键问题

  • 通讯作者:

    郭培民    E-mail: guopm@pku.org.cn

  • 为了促进铁矿石纯氢还原工艺的发展,通过理论分析和计算方法,对纯氢还原工艺的基础理论和应用中的关键问题及工业应用前景进行了探讨。根据纯氢还原反应的热力学和动力学讨论结果可知,纯氢还原氧化铁的反应是吸热反应,氢还原的反应速率明显快于碳还原。参考工业化的富氢还原工艺,选择并设计了纯氢还原反应器和工艺,并提出了适当提高还原温度、压力和温度的方法,以加快铁矿石的反应速度,促进氧化铁的还原。对工程应用中的关键技术参数,如氢气消耗量、循环气量和热平衡,进行了理论计算,并提出了优化参数值。对目前各种制氢方法的工艺参数、成本、优缺点的对比结果表明,天然气重整制氢具有良好的发展前景。通过对高温高压氢对耐热钢材料的腐蚀机理和H2S在氢气中对钢的腐蚀机理的探讨,提出了开发新型金属耐温材料、金属涂层材料及控制气体成分的方法,可指导加热器和反应器材料的选择。最后,分析了工程应用中影响氢还原过程平稳运行的关键因素,为纯氢还原过程的工业应用提供了参考。
  • Research Article

    Industrial application prospects and key issues of the pure-hydrogen reduction process

    + Author Affiliations
    • The industrial application prospect and key issues in basic theory and application are discussed by the methods of theoretical analysis and calculation to promote the development of the pure-hydrogen reduction process. According to the discussion of thermodynamics and kinetics of pure-hydrogen reduction reaction, the reduction reaction of iron oxide by pure hydrogen is an endothermic reaction, and the reaction rate of hydrogen reduction is significantly faster than that of carbon reduction. To explore the feasibility of the industrial applications of pure-hydrogen reduction, we design the hydrogen reduction reactor and process with reference to the industrialized hydrogen-rich reduction process and put forward the methods of appropriately increasing the reduction temperature, pressure, and temperature of iron ore into the furnace to accelerate the reaction rate and promote the reduction of iron oxide. The key technical parameters in engineering applications, such as hydrogen consumption, circulating gas volume, and heat balance, are discussed by theoretical calculations, and the optimized parameter values are proposed. The process parameters, cost, advantages, and disadvantages of various current hydrogen production methods are compared, and the results show that hydrogen production by natural gas reforming has a good development prospect. Through the discussion of the corrosion mechanism of high-temperature and high-pressure hydrogen on heat-resistant steel materials and the corrosion mechanism of H2S in the hydrogen gas on steel, the technical ideas of developing new metal temperature-resistant materials, metal coating materials, and controlling gas composition are put forward to provide guidance for the selection of heater and reactor materials. Finally, the key factors affecting the smooth operation of the hydrogen reduction process in engineering applications are analyzed, offering a reference for the industrial application of the pure-hydrogen reduction process.
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