title: Gasification of torrefied Miscanthus × giganteus in an air-blown bubbling fluidized bed gasifier.
abstract: 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 × giganteus (M×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 × 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/m(3), gas yield 2m(3)/kg biomass (H2 8.6%, CO 16.4% and CH4 4.4%) and cold gas efficiency 62.7%. The comparison between raw and torrefied M × G indicates that the torrefied M × G is more suitable BFB gasification.
authors.affiliation: Carbolea, University of Limerick, Ireland.
authors.forename: G
authors.initials: G
authors.lastname: Xue
authors.affiliation: Competence Centre for Biorefining & Biofuels, University of Limerick, Ireland.
authors.forename: M
authors.initials: M
authors.lastname: Kwapinska
authors.affiliation: Carbolea, University of Limerick, Ireland.
authors.forename: A
authors.initials: A
authors.lastname: Horvat
authors.affiliation: Carbolea, University of Limerick, Ireland.
authors.forename: W
authors.initials: W
authors.lastname: Kwapinski
authors.affiliation: Energy Research Centre of Netherlands (ECN), Biomass & Energy Efficiency, Petten, The Netherlands.
authors.forename: L P L M
authors.initials: LP
authors.lastname: Rabou
authors.affiliation: Carbolea, University of Limerick, Ireland.
authors.forename: S
authors.initials: S
authors.lastname: Dooley
authors.affiliation: Energy Engineering and Technology Division, Wroclaw University of Technology, Poland.
authors.forename: K M
authors.initials: KM
authors.lastname: Czajka
authors.affiliation: Carbolea, University of Limerick, Ireland. Electronic address: j.j.leahy@ul.ie.
authors.forename: J J
authors.initials: JJ
authors.lastname: Leahy
mesh_terms: D000388:Air; D001709:Biotechnology / Q000295:instrumentation* / Q000379:methods; D003433:Crosses, Genetic; D005740:Gases / Q000737:chemistry*; D006813:Humidity; D006109:Poaceae / Q000737:chemistry*; D013696:Temperature; D013818:Thermogravimetry
chemical_list: D005740:Gases
keywords: Biomass; Bubbling fluidized bed gasification; Mass balance; Miscanthus; Torrefaction