(699d) Analysis of the Heat Transfer in a Packed Bed Composed of Alumina and Coal Exposed to a High Thermal Radiation Flux
AIChE Annual Meeting
2019
2019 AIChE Annual Meeting
Topical Conference: Advances in Fossil Energy R&D
Modular Processes for Coal and/or Biomass Conversion
Thursday, November 14, 2019 - 1:24pm to 1:42pm
ISES Nicolas Ripoll 2 132 2019-03-23T13:49:00Z 2019-04-13T02:32:00Z 2019-04-13T02:32:00Z 1 161 923 Oxford Brookes University 7 2 1082 15.00
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ANALYSIS OF THE HEAT TRANSFER IN A PACKED BED COMPOSED OF
ALUMINA AND COAL EXPOSED TO A HIGH THERMAL RADIATION FLUX
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Summary
mso-border-bottom-alt:solid windowtext .75pt;padding:0cm 0cm 1.0pt 0cm">padding:0cm;mso-padding-alt:0cm 0cm 1.0pt 0cm">This work investigates
temperature profiles and heat fluxes in a packed bed composed of alumina and
coal particles heated by radiation that simulates solar energy flux with the
purpose of hydrogen production. For this purpose, the discrete element method
(DEM) was used along a heat and mass transfer model. As results of the
simulations, thermal profiles through the hybrid packed bed were obtained, as
well as the accompanying heat flux and hydrogen production. The three chemical
kinetics models tested showed good correlations between each other. It is
concluded that the radiation and chemical kinetics model proposed provides the
basis to continue with the experimental study of granular materials at high
temperature, where radiation is the dominant mechanism. padding:0cm;mso-padding-alt:0cm 0cm 1.0pt 0cm">Key-words: Hybrid packed bed; Coal
gasification; Discrete element method (DEM); Radiation; Heat transfer
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