DEM simulation of wood pellets dynamics in a mechanically fluidized reactor
May 22-27, 2016
The Mechanically Fluidized Reactor (MFR) is a novel technology developed to perform fast pyrolysis of solid biomass with particle size between 4 to 8 mm (1). The MFR has been developed to treat cohesive and thermally sensitive biomass materials. This technology does not require any fluidization gas, therefore the residence time of the vapors is solely controlled by their production rate.
In order to get better process understanding and to optimize the process, the particle dynamics in the MFR has been numerically investigated in this contribution. The cylindrical apparatus with a stirrer consisting of vertical blades has been modeled (Fig. 1a). The simulations have been performed in the in-house developed simulation framework MUSEN (2), which is based on the Discrete Element Method (DEM). All particles in the apparatus (foamed glass beads and wood pellets) have been considered individually and for all particles the Newtonian equations of motion have been solved (Fig. 1b).
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Maksym Dosta, Steffen Klöver, Cedric Briens, Valentina Lago, Franco Berruti, and Stefan Heinrich, "DEM simulation of wood pellets dynamics in a mechanically fluidized reactor" in "Fluidization XV", Jamal Chaouki, Ecole Polytechnique de Montreal, Canada Franco Berruti, Wewstern University, Canada Xiaotao Bi, UBC, Canada Ray Cocco, PSRI Inc. USA Eds, ECI Symposium Series, (2016). http://dc.engconfintl.org/fluidization_xv/59