| Abstract: | Based on the analysis of carbon emission sources in steel manufacturing process, the status quo and the characteristics of GHG emission in the steel industry are analyzed. It is concluded that CO2 is the major greenhouse gas that contributes to greenhouse effect and it is mainly caused by energy consumption. As there are many CO2 emission calculation methods for the steel industry or plants, involving aspects such as direct emission, indirect emission, and credits, it should be noted that it makes little sense to compare CO2 emission indexes from different sources. Based on the estimation of direct CO2 emissions in the steel industry in China from 1991 to 2008, it is indicated that the specific direct CO2 emission per ton steel is de-creased from 3.29t in 1991 to 1.92t in 2008, which shows that energy-saving and emission reduction in the Chinese steel industry has made significant progress. Besides, this paper introduces international develop-ments in low carbon technologies, such as ULCOS, COURSE 50, etc.. Meanwhile, the low-carbon technolo-gies, mainly the secondary energy utilization technologies, and CO2 emission reduction potential during the “Twelfth Five-year Plan” in China are analyzed. This paper predicts that, compared with the specific CO2 emission per ton steel in 2005, the figure in 2015 will be reduced by 104.01kg. Finally, GHG emission re-duction measures and roadmap in Chinese steel industry are put forward, and some policies are suggested. |
