Cristin-resultat-ID: 1092649
Sist endret: 20. februar 2015, 12:06
NVI-rapporteringsår: 2014
Resultat
Vitenskapelig artikkel
2014

Effect of temperature and dolomite on tar formation during gasification of torrefied biomass in a pressurized fluidized bed

Bidragsytere:
  • César Berrueco
  • Daniel Montané
  • Berta Güell Matas og
  • Gonzalo del Alamo Serrano

Tidsskrift

Energy
ISSN 0360-5442
e-ISSN 1873-6785
NVI-nivå 2

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2014
Publisert online: 2014
Volum: 66
Sider: 849 - 859

Importkilder

Scopus-ID: 2-s2.0-84896391799

Beskrivelse Beskrivelse

Tittel

Effect of temperature and dolomite on tar formation during gasification of torrefied biomass in a pressurized fluidized bed

Sammendrag

This work investigates the effect of temperature and bed material on the yields and composition of gas and tar produced from gasification of two types of biomass feedstock previously torrefied at 275 °C. Special attention was devoted to the evolution of tar composition under the different experimental conditions. Experiments were conducted in a fluidized bed reactor using two different types of bed material (sand and dolomite) under a constant pressure of 0.5 MPa and at two temperature levels (750 and 850 °C). Tar destruction reactions promoted by the catalyst (dolomite) enhanced the production of some of the gas components (H2, CO2, CO and CH4) whereas C2 hydrocarbons decreased, this effect being slightly more relevant at 850 °C. Comparable trends were observed with increasing temperature, which had a positive effect on cracking reactions and tar destruction. For both feedstocks, the increase in temperature resulted in (i) higher gas yields, and (ii) enhanced char gasification rate. On the other hand the evolution of tar yield and composition revealed a possible competition between two tar reaction pathways during gasification, (i) tar polymerization, and (ii) de-alkylation, dehydration and cracking of tars, depending on the experimental conditions and feedstock used. Copyright © 2014 Elsevier Ltd. All rights reserved.

Bidragsytere

César Berrueco

  • Tilknyttet:
    Forfatter
    ved Universitat de Barcelona

Daniel Montané

  • Tilknyttet:
    Forfatter
    ved Universitat Rovira i Virgili
  • Tilknyttet:
    Forfatter
    ved Universitat de Barcelona

Berta Güell Matas

  • Tilknyttet:
    Forfatter
    ved Termisk energi ved SINTEF Energi AS

Gonzalo del Alamo Serrano

  • Tilknyttet:
    Forfatter
    ved Termisk energi ved SINTEF Energi AS
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