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Impacts of Bed Material Activation and Fuel Moisture Content on the Gasification Rate of Biomass Char in a Fluidized Bed
Chalmers University of Technology, Sweden.
RISE - Research Institutes of Sweden (2017-2019), Samhällsbyggnad, Energi och cirkulär ekonomi.ORCID-id: 0000-0003-3777-7780
Chalmers University of Technology, Sweden.
Chalmers University of Technology, Sweden.
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2019 (engelsk)Inngår i: Industrial & Engineering Chemistry Research, ISSN 0888-5885, E-ISSN 1520-5045, Vol. 58, nr 12, s. 4802-4809Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The use of certain bed materials has been found to increase the steam gasification rate of biomass char. The present work investigates how this phenomenon is influenced by different parameters (e.g., temperature, fuel type, and fuel moisture content), using a laboratory-scale bubbling fluidized bed gasifier. Silica sand, fresh olivine, and activated olivine were employed as bed materials, and three biomass fuels (wood chips, wood pellets, and forest residue pellets) were considered. Switching the bed material from silica sand to activated olivine resulted in a significant increase in the char gasification rate for all three fuels, with further increases noted as the fuel particle size was decreased. The observed effect was strongest (up to 4-fold) during the initial conversion phase (char gasification degrees < 20%) when the temperature was relatively low (≤ 800 °C). The moisture content of the wood chips (0-40%) had no significant effect on the char gasification rate.

sted, utgiver, år, opplag, sider
American Chemical Society , 2019. Vol. 58, nr 12, s. 4802-4809
Emneord [en]
Biomass, Fuels, Gasification, Moisture, Moisture determination, Olivine, Particle size, Pelletizing, Silica, Silica sand, Silicate minerals, Wood fuels, Wood products, Bed materials, Biomass fuels, Bubbling fluidized bed, Char gasification, Forest residue, Fuel moisture content, Fuel particles, Steam gasification, Fluidized beds
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Identifikatorer
URN: urn:nbn:se:ri:diva-38344DOI: 10.1021/acs.iecr.9b00528Scopus ID: 2-s2.0-85063607080OAI: oai:DiVA.org:ri-38344DiVA, id: diva2:1313851
Tilgjengelig fra: 2019-05-06 Laget: 2019-05-06 Sist oppdatert: 2023-06-07bibliografisk kontrollert

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Atongka Tchoffor, PlacidDavidsson, Kent

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