Biomass-based gas use in Swedish iron and steel industry

Supply chain and process integration considerations

Document identifier: oai:DiVA.org:ltu-75727
Access full text here:10.1016/j.renene.2019.08.100
Keyword: Engineering and Technology, Mechanical Engineering, Energy Engineering, Teknik och teknologier, Maskinteknik, Energiteknik, Biomass supply, Integrated production, Bio-SNG, Bio-syngas, Iron and steel industry, System analysis
Publication year: 2020
Relevant Sustainable Development Goals (SDGs):
SDG 7 Affordable and clean energySDG 12 Responsible consumption and production
The SDG label(s) above have been assigned by OSDG.ai

Abstract:

Substitution of fossil gaseous fuels with biomass-based gases is of interest to the iron and steel industry due to its role in the mitigation of anthropogenic CO2emissions. In switching from fossil fuels to biomass-based gases, a systems analysis of the full value chain from biomass supply to the production and supply of final gas products becomes crucial. This study uses process and heat integration methods in combination with a supply chain evaluation to analyse full value chains of biomass-based gases for fossil gas replacement within the iron and steel industry. The study is carried out as a specific case study in order to understand the implications of utilizing bio-syngas/bio-SNG as heating fuels in iron- and steel-making, and to provide insights into the most sensitive parameters involved in fuel switching. The results show a significant cost difference in the fuel production of the two gas products owing to higher capital and biomass use in the bio-SNG value chain option. When tested for sensitivity, biomass price, transportation distance, and capital costs show the most impact on fuel production costs across all options studied. Trade-offs associated with process integration, plant localisation, feedstock availability and supply were found to varying extents.

Authors

Chinedu M Nwachukwu

Luleå tekniska universitet; Energivetenskap
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Andrea Toffolo

Luleå tekniska universitet; Energivetenskap
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Elisabeth Wetterlund

Luleå tekniska universitet; Energivetenskap
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