Low CO2 emission technologies and bio-energy for iron and steelmaking
The global steel production has been growing for the last 50 years,from 200 Mt in 1950s to 1 240 Mt in 2006.Iron and steelmaking industry is one of the most energy-intensive industries,with an annual energy consumption of about 24 EJ (1018 J),or 5% of the world s total energy consumption.The steel industry accounts for 3% -4% of total world greenhouse gas emissions.With 2.2 of CO2 emitted for every ton of steel produced,the steel industry annually emits 2.7 billion tons of CO2 into the atmosphere.While enhancing energy efficiency could be a short-term approach for the steel industry to reduce greenhouse gas emission,the long-term approaches to achieve a significant reduction in CO2 emissions from the steel industry would be through ①developing and applying new CO2 breakthrough technologies for iron and steelmaking,and ②increasing the use of renewable energy (in particular,bio-energy)for iron and steelrnaking.Bio-energy is renewable,CO2 neutral,and abundant in resources,with a potential worlds annual production of about 3000 EJ,about 6 times the worlds total energy consumption.This paper presents an overview of new CO2 breakthrough technologies for iron and steelmaking,and the current research and development for the use of biomass and bio-fuels as substitutes for coke,coal and natural gas in various iron and steelmaking processes including iron-ore sintering,blast furnace operations,and new iron and steelmaking processes.The key challenges for a large-scale utilization of bio-energy for iron and steelmaking are also discussed in this paper.
CO2 emission control iron and steelmaking bio-energy biomass bio-fuels
Chunbao (Charles)Xu
Dept.of Chemical Engineering,Lakehead University,Thunder Bay,ON,Canada P7B 5E1
国际会议
上海
英文
1309-1314
2008-09-26（万方平台首次上网日期，不代表论文的发表时间）