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Fuel Indices for Estimation of Slagging of Phosphorus-Poor Biomass in Fixed Bed Combustion
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.
Umeå University, Energy Technology and Thermal Process Chemistry.
Thermochemical Energy Conversion Laboratory, Department of Applied Physics and Electronics, Umeå University.
Thermochemical Energy Conversion Laboratory, Department of Applied Physics and Electronics, Umeå University.
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Number of Authors: 5
2016 (English)In: Energy & Fuels, ISSN 0887-0624, E-ISSN 1520-5029Article in journal (Refereed) Epub ahead of print
Abstract [en]

The market for solid biofuels will grow rapidly during the coming years and there will be a great demand for raw materials. This will force the existing fuel base to also cover wooden materials of lower qualities as well as agricultural raw materials and residues, which often show unfavorable ash melting temperatures. This may lead to combustion related problems. Thus, for the utilization of lower quality fuels, it is important to be able to predict potential fuel ash related problems such as slagging. In light of this, the first objective of the present paper was to evaluate the applicability of previously defined indices for slagging of biomass fuels (phosphorus-poor) in fixed bed combustion. The evaluation showed that none of the previously suggested indices in the literature are suitable for qualitative (nor quantitative) prediction of slagging during fixed bed combustion of P-poor biomass fuels. Hence, a second objective was to develop improved novel fuel indices that can be applied to estimate the slagging of phosphorus-poor biomass in fixed bed combustion. The novel fuel indices give a qualitative prediction of the slagging tendency in biomass fixed bed combustion but still needs additional work to further extend the compositional range as well as to fine-tune the indices’ boundaries.

Place, publisher, year, edition, pages
National Category
Energy Engineering
Research subject
Energy Engineering
URN: urn:nbn:se:ltu:diva-61274DOI: 10.1021/acs.energyfuels.6b02563OAI: diva2:1060105
Available from: 2016-12-27 Created: 2016-12-27 Last updated: 2016-12-27

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