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On the recovery of industrial secondary energy in the iron and steel industry – an approach of industrial metabolism
Shandong University, China.
Mälardalen University, School of Sustainable Development of Society and Technology. (Energy Technology)ORCID iD: 0000-0002-6279-4446
Shandong University, China.
Shandong University, China.
(English)In: International Journal of Green Energy, ISSN 1543-5075Article in journal (Refereed) Accepted
Abstract [en]

This study developed a conceptual model based on the Industrial Metabolism approach and the model can be used to analyze the energy flows for the iron and steel (IS) industry. For most of China’s IS industries, coal provides the main energy input, while the chemical energy contained in the combustible gases and heat are the main types of secondary energy obtained as byproducts or waste. By applying the model to a China’s IS corporation, the study found that Corporation A recovered and reused 47% of its secondary energy in 2010, which was equivalent to the national average level in 2005. Within the category of secondary energy, near 75% of the combustible gases had been recovered mainly for power generation; in contrast, only 15% of heat was recovered and the heat in the exhaust gases from coking and sintering, in the slag of iron- and steel-making and in steel billets was wasted without any recovery treatment. In addition, less than 5% of the heat contained in the low-temperature cooling water was used for district heating, while the majority remained unused due to the lack of infrastructure and administrative complexities

Place, publisher, year, edition, pages
Taylor & Francis Group.
National Category
Energy Systems
Identifiers
URN: urn:nbn:se:mdh:diva-26633OAI: oai:DiVA.org:mdh-26633DiVA: diva2:766483
Available from: 2014-11-27 Created: 2014-11-27 Last updated: 2016-02-25Bibliographically approved

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Citation style
  • apa
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