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The effects of kraft lignin additives on wood fuel pellet quality, energy use and shelf life
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences. (Miljö- och energisystem)ORCID iD: 0000-0002-9707-8896
Karlstad University, Faculty of Technology and Science, Department of Energy, Environmental and Building Technology. (Energi och hållbar utveckling)
Karlstad University, Faculty of Technology and Science, Department of Energy, Environmental and Building Technology. (Energi och hållbar utveckling)ORCID iD: 0000-0002-0380-3533
Karlstad University, Faculty of Technology and Science, Department of Energy, Environmental and Building Technology. (Energi och hållbar utveckling)
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2013 (English)In: Fuel processing technology, ISSN 0378-3820, E-ISSN 1873-7188, Vol. 112, no 0, 64-69 p.Article in journal (Refereed) Published
Abstract [en]

In 2011, the total consumption of pellets in Sweden amounted to 1.9 million tons, which represents an energy value of 9 TWh. The pellets are used in large-scale as well as in small-scale applications, and increased demands on pellet quality are likely to force pellet producers to improve on the pellet properties. One way of increasing pellet quality is by using additives. The purpose of this article, therefore, is to examine kraft lignin as an additive. Pelletswere produced in a small industrial pellet press located at KarlstadUniversity, Karlstad, Sweden, and 1–4% of kraft lignin was added to the pellets. The results indicate that the addition of an increased amount of kraft lignin to the pellets increases their mechanical durability and their lengths. The results also indicate that dry kraft lignin yields pellets with higher durability as compared to wet kraft lignin. The energy demand was unaffected by the increased use of kraft lignin. The general results presented in this paper are useful for producers of lignin, pellet producers and end-users of pellets, who are interested in developing their products and/or improving the production processes.

Place, publisher, year, edition, pages
2013. Vol. 112, no 0, 64-69 p.
Keyword [en]
Pellets Quality Energy efficiency Additive Lignin Storage
National Category
Energy Systems
Research subject
Environmental and Energy Systems
Identifiers
URN: urn:nbn:se:kau:diva-27007DOI: 10.1016/j.fuproc.2013.02.011ISI: 000319244200009OAI: oai:DiVA.org:kau-27007DiVA: diva2:617207
Available from: 2013-04-22 Created: 2013-04-22 Last updated: 2017-11-01Bibliographically approved

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Berghel, JonasFrodeson, StefanGranström, KarinRenström, RogerStåhl, Magnus
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