Hydrogen metallurgy is one of the important paths for the steel industry to achieve green and low-carbon development.Especially,hydrogen-based shaft furnace direct reduction technology has become an important choice for low-carbon transformation of steel enterprises at home and a-broad.This paper mainly summarized application status of hydrogen-based direct reduction technolo-gy and analyzed the energy consumption,carbon emissions and typical pollutant emissions.Research shows that the energy consumption of iron product based on natural gas and coke oven gas is about 358～395 and 427 kgce/t,and carbon emission of ton steel is 40%～50%lower than blast furnace process.The particulate matter,SO2 and NOx of ton steel are reduced by 26.3%,41.1%,43.2%.With green electricity and green hydrogen,pollution and carbon reduction is lower than natural gas/coke oven gas direct reduction process.It is suggested to increase research upstream and downstream related technologies and equipment of hydrogen metallurgy,improve the resource support ability and core technology supply ability,and support the green and low-carbon transformation of China's steel industry.
hydrogen metallurgydirect reductionshaft furnaceblast furnacereducing pollution and carbon
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