We report on the experimental evaluation of a 5 kW solar chemical reactor for the steam-gasification of petcoke, carried out in a high-flux solar furnace. A petcoke-water slurry was continuously injected into a solar cavity-receiver to create a vortex flow directly exposed to concentrated solar radiation. For a nominal reactor temperature of 1500 K, a water-petcoke molar ratio of 4.8, and a residence time of 2.4 s, the maximum degree of petcoke conversion was 87%. Typical syngas composition produced was 62% H2, 25% CO, 12% CO2, and 1% CH4. The solar energy conversion efficiency-defined as the portion of solar energy absorbed as chemical energy and sensible heat-attained 17%. The effect of varying the particle size (range 8.5-200 μ m) and slurry stoichiometry (range 2.1-6.3) on the degree of chemical conversion and energy conversion efficiency was examined. © 2006 International Association for Hydrogen Energy.
CITATION STYLE
Z’Graggen, A., Haueter, P., Maag, G., Vidal, A., Romero, M., & Steinfeld, A. (2007). Hydrogen production by steam-gasification of petroleum coke using concentrated solar power-III. Reactor experimentation with slurry feeding. International Journal of Hydrogen Energy, 32(8), 992–996. https://doi.org/10.1016/j.ijhydene.2006.10.001
Mendeley helps you to discover research relevant for your work.