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Exposure of refractory materials during high-temperature gasification of a woody biomass and peat mixture
Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
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2018 (English)In: Journal of the European Ceramic Society, ISSN 0955-2219, E-ISSN 1873-619X, Vol. 38, no 2, p. 777-787Article in journal (Refereed) Published
Abstract [en]

Finding resilient refractory materials for slagging gasification systems have the potential to reduce costs and improve the overall plant availability by extending the service life. In this study, different refractory materials were evaluated under slagging gasification conditions. Refractory probes were continuously exposed for up to 27 h in an atmospheric, oxygen blown, entrained flow gasifier fired with a mixture of bark and peat powder. Slag infiltration depth and microstructure were studied using SEM EDS. Crystalline phases were identified with powder XRD. Increased levels of Al, originating from refractory materials, were seen in all slags. The fused cast materials were least affected, even though dissolution and slag penetration could still be observed. Thermodynamic equilibrium calculations were done for mixtures of refractory and slag, from which phase assemblages were predicted and viscosities for the liquid parts were estimated.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 38, no 2, p. 777-787
Keywords [en]
Gasification, Oxygen blown, Biomass, Entrained flow, Slag, Refractory
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:umu:diva-143620DOI: 10.1016/j.jeurceramsoc.2017.09.016ISI: 000418211000047OAI: oai:DiVA.org:umu-143620DiVA, id: diva2:1178576
Available from: 2018-01-30 Created: 2018-01-30 Last updated: 2018-06-09Bibliographically approved

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Carlborg, Markus

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