Coke gasification in blast furnace shaft conditions with H₂ and H₂O containing atmospheres
Heikkilä, Anne M.; Koskela, Aki M.; Iljana, Mikko O.; Lin, Rongshan; Bartusch, Hauke; Heikkinen, Eetu-Pekka; Fabritius, Timo M. J. (2020-11-02)
Heikkilä, A.M., Koskela, A.M., Iljana, M.O., Lin, R., Bartusch, H., Heikkinen, E. and Fabritius, T.M.J. (2021), Coke Gasification in Blast Furnace Shaft Conditions with H2 and H2O Containing Atmospheres. steel research int., 92: 2000456. https://doi.org/10.1002/srin.202000456
© 2020 Wiley‐VCH GmbH. "This is the peer reviewed version of the following article: Heikkilä, A.M., Koskela, A.M., Iljana, M.O., Lin, R., Bartusch, H., Heikkinen, E. and Fabritius, T.M.J. (2021), Coke Gasification in Blast Furnace Shaft Conditions with H2 and H2O Containing Atmospheres. steel research int., 92: 2000456, which has been published in final form at https://doi.org/10.1002/srin.202000456. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving."
https://rightsstatements.org/vocab/InC/1.0/
https://urn.fi/URN:NBN:fi-fe20201210100273
Tiivistelmä
Abstract
Most of world steel in 2018 has been produced from virgin iron ore via the blast furnace (BF)—basic oxygen furnace route. Therewith the BF is one of the most important unit processes in worldwide steel making. Among others, energy efficiency of the BF is dependent on coke reactivity. Coke gasification occurs via solution‐loss reactions either with CO₂ or H₂O. Herein, the gasification of coke is studied in CO–CO₂–H₂–H₂O–N₂ atmosphere simulating the BF conditions. The simulated atmospheres are based on the measurements from an actual BF. This research studies the effect of the composition of the BF atmosphere representing conditions near the wall as well as at the center and influence of the H₂O content on coke gasification under simulated BF conditions. It is found that the location plays a role in coke gasification: wall atmosphere yields higher coke gasification compared with center. Dynamic tests show that introduction of H₂ and H₂O in gas atmosphere fastens coke gasification by +119% at temperature range between 800 and 1200 °C in wall conditions. When H₂O is present in gas atmosphere, the mass loss of coke is also greater in both wall and center conditions.
Kokoelmat
- Avoin saatavuus [41990]