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Abstrakt
High grade pellets with basicity index close to 0.5 were directly reduced in pure hydrogen atmosphere. The reduction experiments were performed in the temperature range 800 e1000 C at the pressure of 8 bar. The pellets internal structure was analysed through micro tomography observations in the unreduced and reduced conditions. After reduction, the pellets showed a variation of porosity up to more than 15% with a remarkable change in the pore dimensions and aspect. Given the pores aspect variations, tortuosity strongly varied. This is believed to have large influence on the pellets reduction kinetics depending on the reduction conditions. After reduction, the pellets were re-oxidized in the temperature range 200e700 C for different times. Up to 500 C the weight increase due to oxidation resulted very slow, for higher temperatures the re-oxidation behaviour showed a very remarkable acceleration.
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Autorzy (4)
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Pasquale Cavaliere
- Department of Innovation Engineering, University of Salento, Via per Arnesano, 73100, Lecce, Italy
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Leandro Dijon
- VALE, Route de Pallatex 29 St-Prex, 1162, Losanna, Switzerland
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Pełna treść
- Wersja publikacji
- Accepted albo Published Version
- DOI:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.ijhydene.2023.08.254
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Informacje szczegółowe
- Kategoria:
- Publikacja w czasopiśmie
- Typ:
- artykuły w czasopismach
- Opublikowano w:
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
nr 49,
strony 1235 - 1254,
ISSN: 0360-3199 - Język:
- angielski
- Rok wydania:
- 2024
- Opis bibliograficzny:
- Cavaliere P., Dijon L., Laska A., Koszelow D.: Hydrogen direct reduction and reoxidation behaviour of high-grade pellets// INTERNATIONAL JOURNAL OF HYDROGEN ENERGY -Vol. 49, (2024), s.1235-1254
- DOI:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.ijhydene.2023.08.254
- Źródła finansowania:
-
- Publikacja bezkosztowa
- Weryfikacja:
- Politechnika Gdańska
wyświetlono 112 razy
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