2002
DOI: 10.1115/1.1488666
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Carbon Particle Cloud Generation for a Solar Particle Receiver

Abstract: The development and performance of a full-scale carbon particle cloud generator together with the evaluation of nine commercial carbon blacks is reported. Large variations were found in the dispersability and settling properties of the investigated powders. Scanning electron microscope analysis of cloud samples from different powders showed unequal state of agglomeration and particle size. The particle population distribution of the most suitable powder was determined, showing that the particle cloud consisted… Show more

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Cited by 12 publications
(2 citation statements)
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“…Operating temperatures around 1500 • C are therefore necessary to obtain high conversions. Bertocchi [45,46] investigated the possibility of using a volumetric receiver/reactor in which a cloud of micron-or submicron-sized carbon particle was used as the radiation absorbing medium. These particles may be either injected along with the methane feed at the top of the reactor, as shown in Figure 5, or produced by the cracking reaction itself.…”
Section: Reactors/receivers For Solar Crackingmentioning
confidence: 99%
“…Operating temperatures around 1500 • C are therefore necessary to obtain high conversions. Bertocchi [45,46] investigated the possibility of using a volumetric receiver/reactor in which a cloud of micron-or submicron-sized carbon particle was used as the radiation absorbing medium. These particles may be either injected along with the methane feed at the top of the reactor, as shown in Figure 5, or produced by the cracking reaction itself.…”
Section: Reactors/receivers For Solar Crackingmentioning
confidence: 99%
“…Direct solar irradiation of such a suspension of reacting particles is an efficient means of heat transfer to the reactants. [12][13][14][15] Furthermore, the temperature at which alumina calcination takes place in the Bayer process, 1273-1373 K, is readily achievable in current commercially available solar tower concentrators 11 and is significantly less than the 1750 K that has been achieved previously in the solar vortex transport reactor used for solar gasification. 16 The potential for alumina to be calcined with CST has been assessed with a packed bed of boehmite (an aluminium oxyhydroxide) in a crucible positioned at the focal plane of a Fresnel concentrator by Padilla et al 17 They reported 75% conversion after 10 minutes of exposure to solar radiation concentrated to 2644 suns and full conversion with exposure time of 90 minutes.…”
Section: Introductionmentioning
confidence: 97%