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Effect of water vapour and biomass nature on the yield and quality of the pyrolysis products from biomass
Institute of Organic Chemistry, Bulgarian Academy of Sciences, Sofia .
Institute of Organic Chemistry, Bulgarian Academy of Sciences, Sofia .
KTH, Skolan för kemivetenskap (CHE), Kemiteknik, Kemisk reaktionsteknik.
KTH, Tidigare Institutioner, Kemiteknik. KTH, Skolan för kemivetenskap (CHE), Kemiteknik, Kemisk teknologi.ORCID-id: 0000-0002-1664-0278
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2001 (Engelska)Ingår i: Fuel processing technology, ISSN 0378-3820, E-ISSN 1873-7188, Vol. 70, nr 1, s. 53-61Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Slow pyrolysis/activation of biomass in a flow of steam is studied in laboratory equipment supplied with a fixed bed reactor. Forestry and agricultural residues of different origin are selected as raw materials (birch wood, olive stones, bagasse, pelletised straw and miscanthus). The final pyrolysis temperature is varied in the range 700-800 degreesC and the duration of the activation is 1 or 2 h. The effect of both the nature of the investigated biomass samples and the presence of water vapour on the quality of the pyrolysis products is in the focus of interest of this work. Column chromatography is used to characterize the liquid products. The surface area and the acid-base neutralization capacity of the solid products are determined by the adsorption capacity towards iodine and reactions with EtONa and HCl. The results are compared with those obtained in pyrolysis in inert atmosphere of nitrogen. It is shown that the presence of steam has strong effect on the yield and properties of the products. Significant part of the liquid product is found dissolved in the water phase obtained after condensation of the volatiles. The solid products obtained in the presence of steam have the properties of activated carbons.

Ort, förlag, år, upplaga, sidor
2001. Vol. 70, nr 1, s. 53-61
Nyckelord [en]
pyrolysis, biomass, steam, nitrogen atmosphere, activated carbon, liquid products, activated carbon
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Annan kemiteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-20529ISI: 000168064600005OAI: oai:DiVA.org:kth-20529DiVA, id: diva2:339224
Anmärkning
QC 20100525 NR 20140804Tillgänglig från: 2010-08-10 Skapad: 2010-08-10 Senast uppdaterad: 2017-12-12Bibliografiskt granskad

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