Tianjin Key Laboratory of Clean Energy Utilization and Pollutant Control, School of Energy and Environmental Engineering, Hebei University of Technology
Tianjin Recyclable Resources Institute, All China Federation of Supply and Marketing Cooperatives
State Key Laboratory of Advanced Steel Processes & Products, Central Iron & Steel Research Institute
School of Environment, Tsinghua University

应用可再生的清洁资源替代煤、焦等化石资源用于炼铁是钢铁企业实现“碳中和”、“碳达峰”的重要途径之一。农林废弃物等生物质资源因其廉价易得、低温还原性较强以及碳中性等特点而在炼铁领域受到广泛关注。本综述着眼于热解与燃烧这两种主要的生物质热利用方式，较为系统地对上述两个过程中的反应机理、气相产物及污染物释放特性进行了概括性分析；以高炉喷吹生物质燃料和生物质还原剂用于直接还原炼铁为代表，从工艺概况、过程解析及污染物生成机理三个方面对基于上述两种热利用方式的生物质直接参与炼铁的典型工艺过程进行了综合分析；针对生物质直接参与炼铁的上述典型工艺进行了经济性分析及进一步减排进行展望，以期为缓解化石能源供需矛盾，减少炼铁温室气体排放乃至钢铁工业的转型升级提供有价值的参考。

The application of renewable and clean resources to replace fossil resources such as coal and coke in ironmaking is one of the most important ways for iron and steel companies to achieve "carbon neutrality" and "carbon peaking". Biomass resources such as agricultural and forestry wastes have received a lot of attention in ironmaking because of their low cost and availability, low temperature reducibility and carbon neutrality. In this work, the reaction mechanism, gaseous products and pollutant release characteristics are analyzed in a more systematic way, focusing on the two main thermal utilization methods of biomass, namely pyrolysis and combustion. Subsequently, the process overview, process analysis and pollutant generation mechanism are discussed in detail, by taking blast furnace blowing biomass fuel and biomass reductant for direct reduction ironmaking as representatives. Finally, an economic analysis of the above typical processes based on the utilization of biomass in ironmaking is carried out, as well as an outlook of emission reduction strategies, with a view to providing valuable references for alleviating the contradiction between fossil energy supply and demand, reducing emissions from ironmaking and even the transformation and upgrading of iron and steel industry.

国家自然科学基金区域创新发展联合基金（U20A20302）和河北省自然科学基金青年项目（E2021202169）资助

王子琪, 马颢菲, 苑鹏, 沈伯雄, 武兵强, 张威力. 生物质直接参与炼铁的典型工艺过程及污染物生成机理研究进展[J]. 燃料化学学报（中英文）, 2023, 51(9): 1338-1358.

WANG Zi-qi, MA Hao-fei, YUAN Peng, SHEN Bo-xiong, WU Bing-qiang, ZHANG Wei-li. Research progress of the typical ironmaking processes with the direct participation of biomass and the related formation mechanism of pollutants[J]. Journal of Fuel Chemistry and Technology, 2023, 51(9): 1338-1358.