Institute of Process Engineering, Chinese Academy of Sciences
HBIS Group Co., Ltd.

钢铁行业碳减排对我国实现双碳目标具有重要意义,也是国家实现碳中和承诺的主战场之一。系统综述了钢铁行业碳捕集技术的研究及应用进展,总结了钢铁行业碳排放特征,其中高炉炼铁工序是钢铁行业碳排放量最高的工序,其CO2直接排放主要来源于高炉热风炉,占比高达30%左右。钢铁行业的碳捕集技术主要包括有机胺吸收技术、氨水吸收技术、变压吸附技术和钢渣矿化技术,但目前应用案例较少且规模普遍偏小。此外,还对新型有机胺吸收剂、改性分子筛材料等碳捕集材料的研究进展进行了系统总结。未来的研究应重点关注高炉煤气以及高炉热风炉烟气中的CO2捕集,加强对相变吸收体系和催化辅助再生体系的研究,以解决吸收剂分相性能和黏度之间的平衡问题及催化剂稳定性问题,促进两者耦合应用;加强CO2捕集利用一体化技术的研究,重点关注烟气-钢渣直接矿化技术和吸收-矿化一体化技术。

Carbon emission reduction in the iron and steel industry is critical for achieving China′s car-bon neutral goal. This paper systematically reviews the research and application progress of various car-bon capture technologies. The characteristics of carbon emissions in the iron and steel industry are sum-marized, highlighting blast furnace as the main source, contributing roughly 30% of the total CO2 emis-sions in the industry. Carbon capture technologies in the iron and steel industry mainly include organicamine absorption, ammonia water absorption, pressure swing adsorption, and steel slag mineralization.However, there are only a few small-scale applications in practice. Additionally, the research progressof carbon capture materials, such as new organic amine absorbents and modified molecular sieve mate-rials, is systematically introduced. Future studies should focus on CO2 capture from blast furnace gasand hot blast furnace flue gas. Moreover, research on phase-change absorption systems and catalytic-assisted regeneration systems should be reinforced to address issues related to the balance betweenphase separation and absorber viscosity, as well as catalyst stability. This will ultimately facilitate theircombined application with improved efficiency and reduced energy consumption. Furthermore, futureresearch should focus on integrated technologies of CO2 capture and utilization, including flue gas-steelslag direct mineralization and combined capture and mineralization processes.

国家重点研发计划资助项目(2022YFE0208100);云南省重点研发计划资助项目(202303AC100008);山西省科技重大专项计划“揭榜挂帅”资助项目(20220105021011)

杨阳,李毅仁,刘娟,等.钢铁行业二氧化碳捕集技术研究及应用进展[J].能源环境保护,2024,38(3):52-64.

YANG Yang, LI Yiren, LIU Juan, et al. Research and application progress of carbon capture technology in theiron and steel industry[J]. Energy Environmental Protection, 2024, 38(3): 52-64.