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Effect of fuel mixing on melting behavior of spruce wood ash
SINTEF Energy Research, Trondheim, Norway.
SINTEF Energy Research, Trondheim, Norway.
SINTEF Energy Research, Trondheim, Norway.
Mälardalen University, School of Business, Society and Engineering, Future Energy Center.ORCID iD: 0000-0002-6279-4446
2019 (English)In: Energy Procedia, Elsevier Ltd , 2019, Vol. 158, p. 1342-1347Conference paper, Published paper (Refereed)
Abstract [en]

The aim of this work was to investigate effects of fuel mixing on melting behavior of spruce wood ash. Spruce bark was studied as additive fuel regarding its ability to lower the melting and flowing temperature of spruce wood ash. Standard ash fusion characterization tests were carried out on ashes from mixtures of spruce wood and bark after heating at 550 °C. The ash residues after the ash fusion tests were analyzed by using scanning electron microscopy-energy dispersive X-ray spectrometry (SEM-EDX). High melting temperature and low sintering tendency of spruce wood ash was observed. It is mainly attributed to formation of calcium rich silicates with high melting temperatures. Upon mixing with 10 wt% bark, the melting temperature of the spruce wood ash considerably decreased, which flowed completely after the ash fusion test. Compared to spruce wood ash, SEM images showed that the ash from the mixture of spruce wood and bark passed a molten stage with formation of slag. SEM-EDX revealed that the concentration of silicon in the spruce wood ash increased as a result of mixing with spruce bark. It favors formation of low temperature melting potassium silicates.

Place, publisher, year, edition, pages
Elsevier Ltd , 2019. Vol. 158, p. 1342-1347
Keywords [en]
Ash, Bark, Gasification, Melting, Spruce wood, Ashes, Fuel additives, Melting point, Mixing, Mixtures, Potassium compounds, Scanning electron microscopy, Silicates, Sintering, Slags, Characterization tests, Energy dispersive X-ray spectrometry, Investigate effects, Low-temperature melting, Melting behavior, Potassium silicates, Wood
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-43188DOI: 10.1016/j.egypro.2019.01.329ISI: 000471031701109Scopus ID: 2-s2.0-85063895630OAI: oai:DiVA.org:mdh-43188DiVA, id: diva2:1306998
Conference
10th International Conference on Applied Energy, ICAE 2018, 22 August 2018 through 25 August 2018
Available from: 2019-04-25 Created: 2019-04-25 Last updated: 2019-07-11Bibliographically approved

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Li, Hailong

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CiteExportLink to record
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  • apa
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