高炉煤气净化处理以及多相催化材料在其碳资源回收利用中的研究现状

Blast furnace gas （BFG）constitutes a valuable recyclable resource in the metallurgical industry. Although generally used for combustion-based power generation and heat utilization,its considerable carbon content remains largely untapped. Therefore,the recylization of the CO₂ and CO gas from BFG becomes very important for the reduction of CO_x emissions from steel production,that also generates value-added chemicals. And this strategy could possibly achieve multifunctional goals,such as energy optimization,low-carbon ironmaking,and enhanced energy efficiency. This review introduces the generation and composition of BFG and discusses the adverse effects of harmful components,including sulfur compounds,acidic gases,and particulate matter,on the catalytic conversion of CO_x,along with corresponding purification methods. To improve CO_x recovery efficiency,several carbon capture technologies,including cryogenic distillation,absorption,and adsorption,are introduced for the separation and purification of the carbon-based components. Furthermore,this review highlights the advanced catalytic materials of photocatalysis,electrocatalysis,thermal catalysis,and biocatalysis,that may achieve highly efficient and selective conversion of CO_x into value-added chemicals under industrial conditions. And these innovative approaches present promising technical strategies for carbon recovery and utilization of blast furnace gas.