Discussion on the preparation of hydrogen-rich reducing gas by coupling metallurgical solid waste oxygen carrier and chemical looping gasification technology
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摘要: 氢气以及富氢还原气体的来源是制约氢能在钢铁行业应用的关键,而化学链气化技术可以制备高品质的富氢还原气体,其工艺成熟、成本低廉。载氧体是化学链气化技术中重要的媒介,基于载氧体的性能和类型,综述了化学链气化技术中铁基载氧体的应用现状,冶金固体废弃物载氧体的制备和应用,讨论了冶金固废载氧体耦合化学链气化技术制备富氢还原气体的可行性,并对冶金固废载氧体在化学链气化技术制备富氢还原气体领域的研究趋势和发展方向进行了展望。Abstract: The sources of hydrogen and hydrogen-rich reducing gases are the key factors restricting the application of hydrogen energy in the iron and steel industry. However, chemical looping gasification technology can produce high quality hydrogen-rich reducing gases, and this process is mature with low cost. Oxygen carriers play a crucial role in the chemical looping gasification technology. Based on the capabilities and categories of the oxygen carrier, this paper reviews the application of iron-based oxygen carriers in the chemical looping gasification technology. The preparation and utilization of oxygen carriers from metallurgical solid waste are described in detail. The feasibility of generating hydrogen-rich reducing gases by coupling metallurgical solid waste oxygen carriers with chemical looping gasification technology is discussed further. Finally, the research trends and future development directions of solid waste oxygen carriers by using chemical looping gasification technology to produce hydrogen-rich reducing gas are prospected.
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样本 文山
赤泥西安
赤泥广西
赤泥越南
赤泥中州
赤泥河南
赤泥山东
赤泥Fe2O3 29.34 42.31 74.28 70.32 14.97 26.80 13.94 Al2O3 25.46 19.53 12.68 10.86 23.78 28.65 27.15 SiO2 19.39 17.64 3.13 11.53 20.71 25.91 22.34 TiO2 5.41 5.64 6.10 0.68 4.97 1.79 4.97 Na2O 6.20 5.99 0.07 0.61 5.36 12.66 2.50 CaO 13.69 0.61 2.65 0.65 15.64 2.31 22.78 其他 0.51 8.28 1.09 5.35 14.57 1.88 6.32 表 2 不同铜冶炼工艺的铜渣组成[43]
Table 2. Compositions of copper slag in the different copper smelting processes[43]
% 冶炼方法 SiO2 FeO Fe2O3 CaO MgO Al2O3 Cu 密闭鼓风法 31~39 33~42 3~10 6~19 0.8~7.0 4~12 0.35~2.4 转炉法 16~28 48~65 12~29 1~2 0~2 5~10 1.1~2.9 艾萨法 31~34 40~58 7.5 2.3 2.0 0.2 0.6 闪速熔炉法 28~38 38~54 12~15 5~15 1~3 2~12 0.17~0.33 -
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