Analysis of CO2 Emission Reduction in Top Gas Recycling-Oxygen Blast Furnace Combine With CCS

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.