介绍了炉顶煤气循环—氧气鼓风高炉炼铁技术的研发进展，阐述了碳捕捉及封存技术(CCS)的特点及其技术成熟度，重点分析了几种CO2分离方法的原理及其适用条件，最后应用IPCC2006方法计算分析了结合碳捕捉及封存技术的炉顶煤气循环氧气鼓风高炉的CO2减排效果。结果表明：新工艺的吨铁CO2排放量为582.40kg，较传统高炉CO2减排55%。结合碳捕捉及封存技术的炉顶煤气循环氧气鼓风高炉炼铁技术的开发，能够促进中国钢铁工业CO2减排，对钢铁工业的可持续发展具有十分重要的现实意义和深远影响。
Research and development progress of top gas recycling and oxygen blast furnace was introduced. The characteristic and technology maturity of CCS (carbon capture and storage) were discussed. Especially, the principle and applicable condition of several methods of the carbon dioxide separation were analyzed. Finally, the effect of CO2 emission reduction in top gas recycling – oxygen blast furnace with CCS was calculated and analyzed with IPCC2006. The results show that CO2 emission of the new process is 582.40kg/t (hot metal), CO2 emission can be reduced by 55%, compared with traditional blast furnace. The development of this technology could contribute to CO2 emission reduction of iron and steel industry in China. It had important practical significance and the profound influence to the sustainable development of iron and steel industry.
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