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  • Wagner, KatharinaBioenergy 2020+ GmbH, Vienna, Austria; Institute of Chemical, Environmental & Bioscience Engineering, Technische Universität Wien, Vienna, Austria (author)

Layer formation mechanism of K-feldspar in bubbling fluidized bed combustion of phosphorus-lean and phosphorus-rich residual biomass

  • Article/chapterEnglish2019

Publisher, publication year, extent ...

  • Elsevier,2019
  • printrdacarrier

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  • LIBRIS-ID:oai:DiVA.org:ltu-73937
  • https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-73937URI
  • https://doi.org/10.1016/j.apenergy.2019.04.112DOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-160593URI

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  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Validerad;2019;Nivå 2;2019-05-14 (johcin)
  • The use of phosphorus-rich fuels in fluidized bed combustion is one probable way to support both heat and power production and phosphorus recovery. Ash is accumulated in the bed during combustion and interacts with the bed material to form layers and/or agglomerates, possibly removing phosphorus from the bed ash fraction. To further deepen the knowledge about the difference in the mechanisms behind the ash chemistry of phosphorus-lean and phosphorus-rich fuels, experiments in a 5 kW bench-scale-fluidized bed test-rig with K-feldspar as the bed material were conducted with bark, wheat straw, chicken manure, and chicken manure admixtures to bark and straw. Bed material samples were collected and studied for layer formation and agglomeration phenomena by scanning electron microscopy combined with energy dispersive X-ray spectrometry. The admixture of phosphorus-rich chicken manure to bark changed the layer formation mechanism, shifting the chemistry to the formation of phosphates rather than silicates. The admixture of chicken manure to straw reduced the ash melting and agglomeration risk, making it possible to increase the time until defluidization of the fluidized bed occurred. The results also highlight that an increased ash content does not necessarily lead to more ash melting related problems if the ash melting temperature is high enough.

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  • Häggström, GustavLuleå tekniska universitet,Energivetenskap,Energy Engineering, Division of Energy Science, Luleå University of Technology, Luleå, Sweden(Swepub:ltu)gushag (author)
  • Skoglund, NilsUmeå universitet,Institutionen för tillämpad fysik och elektronik,Bioenergy 2020+ GmbH,Vienna, Austria. Institute of Chemical, Environmental & Bioscience Engineering, Technische Universität Wien, Vienna, Austria.Thermochemical Energy Conversion Laboratory, Umeå University,Umeå, Sweden,Thermochemical Energy Conversion Laboratory(Swepub:umu)nisskd01 (author)
  • Priscak, JurajBioenergy 2020+ GmbH, Vienna, Austria; Institute of Chemical, Environmental & Bioscience Engineering, Technische Universität Wien, Vienna, Austria (author)
  • Kuba, MatthiasUmeå universitet,Luleå tekniska universitet,Energivetenskap,Bioenergy 2020+ GmbH,Vienna, Austria. Institute of Chemical, Environmental & Bioscience Engineering, Technische Universität Wien, Vienna, Austria.Thermochemical Energy Conversion Laboratory, Umeå University, Umeå, Sweden,Institutionen för tillämpad fysik och elektronik,Bioenergy 2020+ GmbH, Vienna, Austria; Institute of Chemical, Environmental & Bioscience Engineering, Technische Universität Wien, Vienna, Austria; Energy Engineering, Division of Energy Science, Luleå University of Technology, Luleå, Sweden(Swepub:umu)maku2706 (author)
  • Öhman, Marcus,1969-Luleå tekniska universitet,Energivetenskap,Energy Engineering, Division of Energy Science, Luleå University of Technology, Luleå, Sweden(Swepub:ltu)ohmmar (author)
  • Hofbauer, HermannInstitute of Chemical, Environmental & Bioscience Engineering, Technische Universität Wien, Vienna, Austria (author)
  • Bioenergy 2020+ GmbH, Vienna, Austria; Institute of Chemical, Environmental & Bioscience Engineering, Technische Universität Wien, Vienna, AustriaEnergivetenskap (creator_code:org_t)

Related titles

  • In:Applied Energy: Elsevier248, s. 545-5540306-26191872-9118

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