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Biomass Gasification with Steam in Fluidized Bed: Effectiveness of CaO, MgO, and CaO−MgO for Hot Raw Gas Cleaning
Abstract
The upgrading of the raw hot gas from a bubbling fluidized bed biomass gasifier is studied using cheap calcined minerals or rocks downstream from the gasifier. Biomass gasification is made with steam (not air) at 750−780 °C and about 0.5−1.0 kg of biomass/h. Calcined solids used are dolomite (MgO−CaO), pure calcite (CaO), and pure magnesite (MgO). Variables studied have been temperature of the secondary bed (780−910 °C), time of contact or space-time of the gas (0.08−0.32 kg·h/m 3 n), and particle diameter (1−4 mm) and type of mineral. Their effects on tar conversion, tar amount in the exit gas, product distribution, and gas composition are presented. Using a macrokinetic model for the tar disappearance network, the activities of the stones are expressed by their apparent kinetic constant. Apparent energies of activation for tar elimination (42−47 kJ/mol) and preexponential and effectiveness factors are given for all tested solids of which the most active is the calcined dolomite.
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Citations
Cited by
Pyrolysis of Wood/Biomass for Bio-oil: A Critical Review
Mohan, D., Pittman, C. U., & Steele, P. H. (2006) · Energy & Fuels · doi:10.1021/ef0502397 · Cited by 5,663
An overview of advances in biomass gasification
Sikarwar, V. S., Zhao, M., Clough, P., Yao, J., Zhong, X., Memon, M. Z., Shah, N., Anthony, E. J., & Fennell, P. S. (2016) · Energy & Environmental Science · doi:10.1039/c6ee00935b · Cited by 1,258
Tar reduction in biomass producer gas via mechanical, catalytic and thermal methods: A review
Anis, S., & Zainal, Z. A. (2011) · Renewable and Sustainable Energy Reviews · doi:10.1016/j.rser.2011.02.018 · Cited by 802
Tar property, analysis, reforming mechanism and model for biomass gasification—An overview
Li, C., & Suzuki, K. (2009) · Renewable and Sustainable Energy Reviews · doi:10.1016/j.rser.2008.01.009 · Cited by 734
Biomass Gasification in Supercritical Water
Antal, M. J., Allen, S. G., Schulman, D., Xu, X., & Divilio, R. J. (2000) · Industrial & Engineering Chemistry Research · doi:10.1021/ie0003436 · Cited by 610
Metadata
- Authors
- Delgado, J., Aznar, M. P., & Corella, J.
- Venue
- Industrial & Engineering Chemistry Research
- Publisher
- American Chemical Society (ACS)
- Published
- 1997-05-01
- Volume
- 36
- Issue
- 5
- Pages
- 1535-1543
- ISSN
- 0888-5885 (ISSN-L)
- 1520-5045
- OpenAlex
- W2089543826
- Cited by
- 326
- References
- 0
- FWCI
- 6.17
- Type
- journal article
- Language
- en
- Open access
- closed
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- Delgado, J., Aznar, M. P., & Corella, J. (1997). Biomass Gasification with Steam in Fluidized Bed: Effectiveness of CaO, MgO, and CaO−MgO for Hot Raw Gas Cleaning. Industrial & Engineering Chemistry Research. https://doi.org/10.1021/ie960273w
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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