Development of efficient simulation methods for fluidized beds

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In Canada, provincial and territorial authorities promote waste reduction policies and circular economy to**reduce waste disposal and landfilling, reuse and recycle waste materials. In that context, Enerkem has patented**a chemical process to recycle the carbon contained in non recyclable waste into biofuels, providing a**sustainable alternative to incineration or landfilling. This alternative technology transforms the carbon source**into a synthesis gas (syngas) by gasification inside a fluidized bed reactor. Numerical simulations relying on an**Eulerian-Lagragian approach coupling Computational Fluid Dynamics with a Discrete Element Method**(CFD-DEM) are particularly adapted to predict the strongly coupled turbulent two-phase flow inside such**bubbly fluidized bed reactors. The present research project aims at developing, calibrating and validating a**CFD-DEM of a lab-scaled fluidized bed reactor installed in the Enerkem research facilities. This new research**collaboration will provide an original model adapted to the typical design and operation of a gasifier as used in**the Enerkem process. The unsteady numerical simulations will provide key understanding of the sensitivity of**physical and numerical parameters of multiphase fluid dynamics while ensuring the validity of the solutions.**The outcomes of this research project will readily be useful for a future improvement of Enerkem technology**as well as opening an imminent future collaboration between both parties.