Effects of Chinese dolomites on tar cracking in gasification of birch

To minimize tar in the producer gas from birch gasification at 700, 750 and 800 °C, four Chinese dolomites (Zhenjiang, Nanjing, Shanxi, Anhui) and a Swedish dolomite (Sala) used as reference were studied in a laboratory-scale atmospheric fluidized bed gasifier. The gasifier was equipped with a downs...

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Bibliographic Details
Published in:Fuel (Guildford) 2009-10, Vol.88 (10), p.1922-1926
Main Authors: Yu, Q.-Z., Brage, C., Nordgreen, T., Sjöström, K.
Format: Article
Language:English
Subjects:
Applied sciences
Biomass
biomass pyrolysis-gas
calcined dolomite
Carbon monoxide
Chinese dolomite
Energy
Exact sciences and technology
Fuel processing. Carbochemistry and petrochemistry
Fuels
Gasification
hydrogen
Natural energy
separation
Solid fuel processing (coal, coke, brown coal, peat, wood, etc.)
steam
Tar
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Summary:To minimize tar in the producer gas from birch gasification at 700, 750 and 800 °C, four Chinese dolomites (Zhenjiang, Nanjing, Shanxi, Anhui) and a Swedish dolomite (Sala) used as reference were studied in a laboratory-scale atmospheric fluidized bed gasifier. The gasifier was equipped with a downstream fixed catalyst bed. The results imply that all dolomites but Anhui dolomite effectively decompose tar into gases. Anhui dolomite showed a low catalytic capacity to crack tar produced at 700 and 800 °C. The influence of various ratios of steam to biomass on tar content in the producer gas after passing over dolomite was studied. The tar cracking efficiency of the dolomites did not improve significantly with the ratio of steam to biomass in the region 0.11–0.52.
ISSN:0016-2361
1873-7153
1873-7153
DOI:10.1016/j.fuel.2009.04.020