Energy efficiency and carbon dioxide emissions reduction opportunities in the US iron and steel sector

Citation
E. Worrell et al., Energy efficiency and carbon dioxide emissions reduction opportunities in the US iron and steel sector, ENERGY, 26(5), 2001, pp. 513-536
Citations number
24
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environmental Engineering & Energy
Journal title
ENERGY
ISSN journal
0360-5442 → ACNP
Volume
26
Issue
5
Year of publication
2001
Pages
513 - 536
Database
ISI
SICI code
0360-5442(200105)26:5<513:EEACDE>2.0.ZU;2-Y
Abstract
This article presents an in-depth analysis of cost-effective energy efficie ncy and carbon dioxide emissions reduction opportunities in the US iron and steel industry. We show that physical energy intensity for iron and steelm aking (at the aggregate level, standard Industrial Classification 331, 332) dropped 27%, from 35.6 GJ/tonne to 25.9 GJ/tonne between 1958 and 1994, wh ile carbon dioxide intensity (carbon dioxide emissions expressed in tonnes of carbon per tonne of steel) dropped 391c. We provide a baseline for 1994 energy use and carbon dioxide emissions from US blast furnaces and steel mi lls (SIC 3312) disaggregated by the processes used in steelmaking. Energy-e fficient practices and technologies are identified and analyzed for each of these processes. Examination of 47 specific energy efficiency technologies and measures found a total cost-effective reduction potential of 3.8 GJ/t, having a payback period of three years or less. This is equivalent to a po tential energy efficiency improvement of 18% of 1994 US iron and steel ener gy use and is roughly equivalent to 19% reduction of 1994 US iron and steel carbon dioxide emissions. The measures have been ranked in a bottom-up ene rgy conservation supply-curve. (C) 2001 Elsevier Science Ltd. All rights re served.