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New evaluation strategies regarding slag prediction in pellet boilers
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2014 (English)In: Papers of the 22nd european biomass conference: setting the course for a biobased economy, 2014, 368-372 p.Conference paper, Published paper (Refereed)
Abstract [en]

Pellet boilers are widely used for heat production. In most cases only wood pellets with low ash content are suitable for these appliances due to the increased risk of slagging. The ash fusion test (AFT) is the only standardized method currently available for the prediction of slagging but it frequently failed when solid biofuels were investigated. Therefore different laboratory methods for the prediction of slagging were applied in order to identify the most suitable method for reliable prediction of slagging tendencies. Three laboratory test methods were considered in this investigation: a rapid slag test (1), the so-called "CIEMAT method" (2) and the "slag analyser" (3). The suitability of the obtained results was validated by practical combustion tests in up to nine different pellet boilers. As the most promising method the slag analyser was identified. It will be further developed with the aim to be proposing as an additional standard method for determination of slag related problems in fixed bed combustion systems.

Place, publisher, year, edition, pages
2014. 368-372 p.
Keyword [en]
pellet boilers, slag prediction, ash melting behaviour, laboratory tests
National Category
Industrial Biotechnology Chemical Engineering
Identifiers
URN: urn:nbn:se:umu:diva-102392ISI: 000351053500071OAI: oai:DiVA.org:umu-102392DiVA: diva2:808455
Conference
22nd European International Biomass Conference - Setting the Course for a Biobased Economy, Hamburg, GERMANY, JUN 23-26, 2014
Available from: 2015-04-28 Created: 2015-04-23 Last updated: 2015-04-28Bibliographically approved

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Boman, Christoffer

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