Hydrogen production by steam-gasification of petroleum coke using concentrated solar power—II Reactor design, testing, and modeling
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Date
2006-05
Publication Type
Journal Article
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yes
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Abstract
The solar chemical reactor technology for the steam-gasification of petcoke is presented. The reactor features a continuous vortex flow of steam laden with petcoke particles confined to a cavity receiver and directly exposed to concentrated solar radiation. A 5 kW prototype reactor tested in a high-flux solar furnace in the range 1300–1800 K yielded up to 87% petcoke conversion in a single pass of 1 s residence time. The solar-to-chemical energy conversion efficiency attained 9% without accounting for the product's sensible heat, and 20% when the sensible heat is recovered for steam generation and pre-heating. A steady-state process model that couples radiative heat transfer with the reaction kinetics is validated with experimental data and used for optimization and scale-up of the reactor design.
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published
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Volume
31 (6)
Pages / Article No.
797 - 811
Publisher
Elsevier
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03530 - Steinfeld, Aldo (emeritus) / Steinfeld, Aldo (emeritus)