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Blast furnace practice with low emission of carbon dioxide
RISE - Research Institutes of Sweden, Swerea, Swerea MEFOS.
RISE - Research Institutes of Sweden, Swerea, Swerea MEFOS.
RISE - Research Institutes of Sweden, Swerea, Swerea MEFOS.ORCID iD: 0000-0003-0844-2201
RISE - Research Institutes of Sweden, Swerea, Swerea MEFOS.
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2018 (English)In: Chernye Metally, ISSN 0132-0890, no 7, p. 12-19Article in journal (Refereed) Published
Abstract [en]

HBI charging has also the potential to significantly reduce the CO2 emission at the BF but for using high amounts as e. g. 50% the production rate should preferably be increased. Lowed added amounts like 20% of HBI or some other scrap product can be used for lowering of CO2 emission and especially if a slight increase of the production rate is desired. The combined cases with lower amount added in terms of biomass products for injection together with top charging of charcoal as well as HBI addition was shown to give effects up to around 20–30%. This could be an advantage from BF operation point of view as the overall process is likely less influenced by such modification. Top gas recycling has been proven in experiments to give the savings that have been estimated in the modeled cases. As the top gas will be used for BF operation others as e. g. oil, NG, COG, biogas or biomass have to be used in heating furnaces, for district heating and power plants. Moreover, it will need installation of CO2 capture plant and enlargement of oxygen production capacity. By limiting the hot gas temperature to 850 ºC and using metallic heat exchangers the hot stoves are available for periods with conventional BF operation.

Place, publisher, year, edition, pages
2018. no 7, p. 12-19
Keywords [en]
Biogas, Biomass, Blast furnace, Carbon dioxide emission, Coke, Furnace gas, Hydrogen, Iron making, Pulverized coal, Top gas, Wood
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-36742Scopus ID: 2-s2.0-85051321027OAI: oai:DiVA.org:ri-36742DiVA, id: diva2:1273769
Available from: 2018-12-21 Created: 2018-12-21 Last updated: 2018-12-21Bibliographically approved

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Brämming, Mats

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