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 6.70MJ/m3, gas yield 2m3/kgbiomass (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.
Original language | English |
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Pages (from-to) | 397-403 |
Number of pages | 7 |
Journal | Bioresource Technology |
Volume | 159 |
DOIs | |
Publication status | Published - May 2014 |
Keywords
- Biomass
- Bubbling fluidized bed gasification
- Mass balance
- Miscanthus
- Torrefaction