Gasification characteristics of coal/biomass blend in a dual circulating fluidized bed reactor

Myung Won Seo, Jeong Hoi Goo, Sang Done Kim, See Hoon Lee, Young Chan Choi

Research output: Contribution to journalArticlepeer-review

128 Scopus citations


The effects of reaction temperature (750-900 °C), steam/fuel ratio (0.5-0.8), and biomass ratio (0, 0.25, 0.5, 0.75, 1) on the gasification characteristics have been determined in a dual circulating fluidized bed reactor (combustor, 0.04 m×0.11 m×4.5 m high; gasifier, 0.04 m×0.285 m×2.13 m high). Indonesian Tinto sub-bituminous coal and Quercus acutissima sawdust were used as the coal and biomass, respectively. The product gas yield, carbon conversion, and cold gas efficiency from gasification of biomass are higher than those of coal with increasing temperature and steam/fuel ratio. After pyrolysis, surface area, pore volume, and micropores of coal/biomass blend char increase. The maximum increase in gas yield can be obtained with a biomass ratio of 0.5 at the given reaction temperature. Calorific values of the product gas are 9.89-11.15 MJ/m3 with the coal, 12.10-13.19 MJ/m3 with the biomass, and 13.77-14.39 MJ/m 3 with the coal/biomass blends at 800 °C. The synergistic effects on the basis of calorific value and cold-gas efficiency are pronounced with the coal/biomass blends.

Original languageEnglish
Pages (from-to)3108-3118
Number of pages11
JournalEnergy and Fuels
Issue number5
StatePublished - 20 May 2010


Dive into the research topics of 'Gasification characteristics of coal/biomass blend in a dual circulating fluidized bed reactor'. Together they form a unique fingerprint.

Cite this