Institute of Process Engineering, Chinese Academy of Science
North China Electric Power University

钢铁行业碳排放位列工业行业首位,其中高炉工序碳排放量最高,是钢铁行业碳减排卡脖子环节。 高炉煤气循环耦合碳捕集是高炉实现碳减排的重要途径,在减少碳排放的同时,能够实现炉顶煤气的资源化利用,达到节能减排的目的。 文章综述了煤气循环耦合碳捕集对高炉冶炼的影响,介绍了以煤气循环为主要特点的富氧高炉冶炼工艺,综述了高炉碳捕集技术在工业应用成熟的化学吸收法和变压吸附法,指出将煤气循环和碳捕集耦合更有利于高炉冶炼。 在已发展的煤气循环耦合碳捕集应用中,两种技术耦合可使高炉碳排放降低 20% ~ 40%。 未来的研究应关注煤气循环过程中高炉内反应机理变化,和适用于高炉煤气的低能耗碳捕集材料开发,并积极推进该技术在工业上的应用。

The iron and steel industry ranks first in terms of carbon emissions in the industrial sector.The blast furnace process has the highest carbon emissions, which is the carbon emission reduction bot⁃tleneck of the steel industry. The blast furnace gas circulation coupled with carbon capture technology isan important way to achieve carbon emission reduction in blast furnace, which can realize the resourceutilization of top gas while reducing carbon emissions and achieve the purpose of energy saving and e⁃mission reduction. The impact of gas circulation coupled with carbon capture on blast furnace smeltingis introduced, and the oxygen-rich blast furnace smelting process with gas circulation as the main fea⁃ture is presented. The article reviews the mature chemical absorption method and variable pressure ad⁃sorption method of blast furnace carbon capture technology in industrial applications, and points outthat coupling gas circulation and carbon capture is more beneficial to blast furnace smelting. In the de⁃veloped gas cycle coupled carbon capture application, the coupling of the two technologies can reducethe blast furnace carbon emission by 20% ~ 40%. Future research should focus on the change ofreaction mechanism in the blast furnace during the gas cycle, and the development of low-energy car⁃bon capture materials applicable to blast furnace gas. It is also great significance to actively promotingthe industrial application of this technology.

国家重点研发计划项目(2022YFE0208100);国家自然科学基金项目(51978262, 52100133, 52222005)

0 引 言
1 高炉煤气循环耦合碳捕集技术
1.1 煤气循环对高炉炼铁影响
1.2 高炉富氧冶炼研究进展
1.3 煤气碳捕集研究进展
1.3.1 化学吸收法
1.3.2 变压吸附法
2 国内外煤气循环耦合碳捕集应用研究
2.1 日本COURSE50项目
2.2 韩国POSCO项目
2.3 欧盟ULCOS项目
2.4 中国宝武八钢项目
3 结论与展望

徐文青, 符乐, 杨阳, 等. 高炉煤气循环耦合碳捕集低碳冶炼技术研究进展[J]. 能源环境保护, 2023, 37(3): 175-184.

XU Wenqing, FU Le, YANG Yang, et al. Research progress in low carbon smelting technology of blast furnacegas cycle coupling carbon capture[J]. Energy Environmental Protection, 2023, 37(3): 175-184.