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Título

Narrow fluidised beds arranged to exchange heat between a combustion chamber and a CO2 sorbent regenerator

AutorGrasa Adiego, Gemma ; Abanades García, Juan Carlos
Palabras claveCO2 capture
Solids sorbents
Solids mixing
Fluidisation
Combustion
Fecha de publicaciónene-2007
EditorElsevier
CitaciónChemical Engineering Science 62(1-2): 619-626 (2007)
ResumenExperiments in a cold model have been conducted to determine lateral solid diffusion coefficients in a narrow fluidised bed. The experimental data have been obtained using an image analysis technique that traces the dispersion of phosphor coated particles in the bed. A diffusion model has been used to describe lateral solids mixing in the configuration proposed for the narrow fluidised bed. The equation proposed by Shi and Fan [1984. Lateral mixing of solids in batch gas–solids fluidized beds. Industrial and Engineering Chemistry, Process Design and Development 23, 337–341] to calculate the diffusion coefficient in the radial direction fits well the available experimental data. The solid diffusion coefficients obtained have been used to solve a heat transfer problem and discuss the feasibility of a fluidised bed system that makes use of narrow fluidised beds arranged to transfer heat from bed to bed through a separating wall between them. This novel configuration of fluidised bed reactors could find application in some emerging systems that make use of solid regenerable sorbents to capture CO2.
Descripción8 pages, 8 figures.-- Available online Sep 15, 2006.
Versión del editorhttp://dx.doi.org/10.1016/j.ces.2006.09.026
URIhttp://hdl.handle.net/10261/11065
DOI10.1016/j.ces.2006.09.026
ISSN0009-2509
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