Low temperature gasification of olive kernels in a 5-kW fluidized bed reactor for H2-rich producer gas

Skoulou, V.; Koufodimos, G.; Samaras, Z.; Zabaniotou, A.

Abstract

Air gasification of olive kernels in a 5 kW bench scale, bubbling fluidized bed gasifier, aimed at H 2 enrichment of the producer gas, was the target of this study. The effects of reactor temperature (T = 750-850 °C) and equivalence ratio (ER = 0.2-0.4), representing the under stoichiometric amount of air inserted into the reactor to that necessary for complete combustion, on producer gas quality were determined. The experimental results revealed that producer gas H 2 content increased at the temperature of T = 750 °C and ER = 0.2, resembling the high-temperature pyrolysis conditions that favour H 2 and CO production. Further increase in ER deteriorated producer gas quality, decreased H 2 content and favoured CO 2 , thus lowering producer gas heating value. The data obtained from several experiments indicate that olive kernels produced a medium heating value gas (LHV = 6.54 MJ/Nm 3 ) at 750 °C and ER = 0.2, while H 2 and CO production were maximized at the same conditions (H 2 : 24%vv, CO: 14.3%vv). © 2008 International Association for Hydrogen Energy.

Citation

Skoulou, V., Koufodimos, G., Samaras, Z., & Zabaniotou, A. (2008). Low temperature gasification of olive kernels in a 5-kW fluidized bed reactor for H2-rich producer gas. International Journal of Hydrogen Energy, 33(22), 6515-6524. https://doi.org/10.1016/j.ijhydene.2008.07.074

• Journal Article Type: Article
• Acceptance Date: Jul 16, 2008
• Online Publication Date: Oct 12, 2008
• Publication Date: 2008-11
• Deposit Date: Feb 14, 2018
• Journal: International Journal of Hydrogen Energy
• Print ISSN: 0360-3199
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 33
• Issue: 22
• Pages: 6515-6524
• DOI: https://doi.org/10.1016/j.ijhydene.2008.07.074
• Keywords: Air fluidized bed gasification; Olive kernel; Biomass; Hydrogen; Olivine
• Public URL: https://hull-repository.worktribe.com/output/518061
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S0360319908009142?via%3Dihub