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Titel:
Gasification of torrefied Miscanthus x giganteus in an air-blown bubbling fluidized bed gasifier
 
Auteur(s):
Xue, G.; Kwapinska, M.; Horvat, A.; Kwapinski, W.; Rabou, L.P.L.M.; Dooley, S.; Czajka, K.M.; Leahy, J.J.
 
Gepubliceerd door: Publicatie datum:
ECN Biomass & Energy Efficiency 15-4-2014
 
ECN publicatienummer: Publicatie type:
ECN-W--14-015 Artikel wetenschap tijdschrift
 
Aantal pagina's:
9  

Gepubliceerd in: Bioresource Technology (Elsevier), , 2014, Vol.159, p.397-403.

Samenvatting:
Torrefaction is suggested to be an effective method to improve the fuel properties of biomass and gasification of torrefied biomass should provide a higher quality product gas than that from unprocessed biomass. In this study, both raw and torrefied Miscanthus x giganteus (M x G) were gasified in an air-blown bubbling fluidized bed (BFB) gasifier using olivine as the bed material. The effects of equivalence ratio (ER) (0.18–0.32) and bed temperature (660–850 °C) on the gasification performance were investigated. The results obtained suggest the optimum gasification conditions for the torrefied M x G are ER 0.21 and 800 °C. The product gas from these process conditions had a higher heating value (HHV) of 6.70 MJ/m3, gas yield 2 m3/kgbiomass (H2 8.6%, CO 16.4% and CH4 4.4%) and cold gas efficiency 62.7%. The comparison between raw and torrefied M x G indicates that the torrefied M x G is more suitable BFB gasification.


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