Study on Calculation of Material Balance and Energy Balance of Hydrogen-based Shaft Furnace

• 1、Wuhan Iron & Steel Design & Research Institute

Abstract：Under the national carbon neutrality strategic goal, the traditional long blast furnace process has limited carbon emission reduction because coke is irreplaceable as the material column skeleton. In order to achieve substantial carbon emission reduction or even zero-carbon ironmaking, the utilization of hydrogen energy has received more attention. At present, the most widely used utilization of hydrogen energy is hydrogen-based shaft furnaces. There are two main technological processes of hydrogen-based shaft furnaces, Midrex and HYL processes, both of which have industrialized achievements abroad, but this technological process has not been mastered in China. Therefore, it is urgent to develop hydrogen-based shaft furnace processes and equipment with independent intellectual property rights. The foundation lies in the research and analysis of material balance and energy balance. In this paper, the reduction reaction in hydrogen-based shaft furnace is systematically analyzed, and the material balance and energy balance in the shaft furnace are systematically calculated and studied, which lays a theoretical foundation for the subsequent development of hydrogen-based shaft furnace technology and equipment.

Keywords： hydrogen-based shaft furnaces Material balance Energy balance Energy consumption analysis