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Communication Dans Un Congrès Année : 2013

Segregation of char and wood in a cold bubbling fluidised bed of sand for biomass gasification applications

Résumé

Among the biomass gasification technologies, bubbling fluidised bed is well adapted for combined heat and power production in the 1-10 MWe range. However this technology is not yet mature. One key point for its development is a better understanding of the biomass particles hydrodynamics inside the bed. The quality of the syngas and the efficiency of the reactor directly depend on the location of the particles at each phase of their conversion (drying, pyrolysis, char gasification). Bruni et al. [1] showed that endogenous bubbles generated by devolatilisation carry the biomass particles to the bed surface. Since Bruni et al.[1] restricted their study to incipient fluidization, this observation should be assessed for turbulent fluidization which is typical for biomass gasifiers. The hydrodynamics of bubbling fluidized bed has already been investigated experimentally in hot device through high frequency differential pressure measurements [2].This method is used in this study to analyse segregation of biomass and char particles.
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Dates et versions

hal-01089251 , version 1 (01-12-2014)

Identifiants

  • HAL Id : hal-01089251 , version 1

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B Cluet, G Mauviel, Y Rogaume, O Authier, A Delebarre. Segregation of char and wood in a cold bubbling fluidised bed of sand for biomass gasification applications. AIChE 2013 Annual meeting, Nov 2013, San Francisco, CA, United States. ⟨hal-01089251⟩
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