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Alkali-catalyzed hydrothermal treatment of sawdust for production of a potential feedstock for catalytic gasification
School of Environment and Society, Tokyo Institute of Technology, Yokohama, Japan.
Department of Environmental Science and Technology, Tokyo Institute of Technology, Yokohama, Japan.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Energivetenskap.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Energivetenskap. Unit of Climate and Sustainable Cities, IVL Swedish Environmental Research Institute, Stockholm, Sweden.ORCID-id: 0000-0003-1806-4187
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2018 (Engelska)Ingår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 231, s. 594-599Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

This study investigates the effects of reaction temperature and catalyst loading on product yields and fuel properties of produced slurry during the alkali catalyzed hydrothermal treatment (HTT) of pine sawdust. The yield of the liquid fraction, or the aqueous product (AP), at process temperatures of 180–260 °C obtained after solid/liquid separation of the slurry ranged from 11.1 to 34.3 wt% on a dry, ash free basis. The fuel quality of the produced slurry, such as the elemental composition and the higher heating value (HHV), was mainly affected by the catalyst loading. An increase in the catalyst loading caused the ash content to increase. Although the increase in temperature leads to a higher liquid fraction in the slurry making it more homogeneous, its contribution to the elemental composition of the whole slurry was limited. HHV of the produced slurry ranged from 12.0 to 16.4 MJ/kg. These values are comparable to that of black liquor (BL), which has previously been shown to be a promising feedstock for gasification in a pilot scale entrained flow gasifier. These results imply the possibility of a fuel switch from BL to the HTT slurry for entrained flow gasification though its gasification reactivity and conversion characteristics must be investigated further.

Ort, förlag, år, upplaga, sidor
Elsevier, 2018. Vol. 231, s. 594-599
Nyckelord [en]
Biomass, Hydrothermal treatment, Alkali catalyst, Gasification, Slurry
Nationell ämneskategori
Energiteknik
Forskningsämne
Energiteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-71008DOI: 10.1016/j.apenergy.2018.09.150ISI: 000452345400045Scopus ID: 2-s2.0-85053770126OAI: oai:DiVA.org:ltu-71008DiVA, id: diva2:1251412
Anmärkning

Validerad;2018;Nivå 2;2018-09-27 (svasva)

Tillgänglig från: 2018-09-27 Skapad: 2018-09-27 Senast uppdaterad: 2019-02-13Bibliografiskt granskad

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Lundqvist, PetterFurusjö, Erik

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