International comparisons of energy efficiency in power, steel, and cement industries

Industrial energy efficiency is of paramount importance both for conserving energy resources and reducing CO2 emissions. In this paper, we compare specific energy consumption among countries in fossil power generation, steel, and cement sectors. The evaluations were conducted using common system boundaries, allocation, and calculation methods. In addition, we disaggregate within sectors, such as with blast furnace–basic oxygen furnace (BF–BOF) steel and scrap-based electric arc furnace (Scrap-EAF) steel. The results reveal that characteristics vary by sub-sector. Regional differences in specific energy consumption are relatively large in the power, BF–BOF steel, and cement sectors. For coal power generation and BF–BOF steel production, continual maintenance and rehabilitation are of key importance. We confirm these key factors identified in the previous work on our estimated numerical values. In BF–BOF steel production, corrections for hot metal ratios (pig iron production per unit of BOF crude steel production) and quality of raw materials have a large effect on the apparent specific energy consumption. Available data is not yet sufficient for straightforward evaluation of the steel and cement sectors.

[1]  Ernst Worrell,et al.  International comparisons of energy efficiency-Methodologies for the manufacturing industry , 1997 .

[2]  Kanako Tanaka,et al.  Assessment of energy efficiency performance measures in industry and their application for policy , 2008 .

[3]  Ernst Worrell,et al.  Energy efficiency and carbon dioxide emissions reduction opportunities in the U.S. Iron and Steel sector , 1999 .

[4]  Keigo Akimoto,et al.  An Evaluation of Energy Efficiency in Iron and Steel Sector , 2009 .

[5]  Ernst Worrell,et al.  International comparison of energy efficiency of fossil power generation , 2007 .

[6]  Ernst Worrell,et al.  Trend in efficiency and capacity of fossil power generation in the EU , 2009 .

[7]  Aie.  Electricity Information 2010 , 2010 .

[8]  Aie,et al.  Tracking Industrial Energy Efficiency and CO2 Emissions , 2007 .

[9]  Ernst Worrell,et al.  Energy intensity in the iron and steel industry: a comparison of physical and economic indicators , 1997 .

[10]  Jia Li,et al.  Technological, economic and financial prospects of carbon dioxide capture in the cement industry , 2013 .

[11]  Lynn Price,et al.  Opportunities for Improving Energy Efficiency, Reducing Pollution and Increasing Economic Output in Chinese Cement Kilns , 2007 .

[12]  Ernst Worrell,et al.  Energy efficiency and carbon dioxide emissions reduction opportunities in the US iron and steel sector , 2001 .

[13]  Ernst Worrell,et al.  International comparison of CO2 emission trends in the iron and steel industry , 2002 .

[14]  Shinroku Matsuzaki,et al.  Improvement in Blast Furnace Reaction Efficiency Through the Use of Catalyst-doped Highly Reactive Coke , 2006 .

[15]  Keigo Akimoto,et al.  Diffusion of energy efficient technologies and CO2 emission reductions in iron and steel sector , 2007 .

[16]  Florens Flues,et al.  Energy Efficiency and Industrial Output: The Case of the Iron and Steel Industry , 2013 .

[17]  Cecilia Tam,et al.  Energy Transition for Industry: India and the Global Context , 2011 .

[18]  Haiyan Wang,et al.  Energy and Environmental Implications of Hybrid and Electric Vehicles in China , 2013 .