8th World Congress on Particle Technology
(123b) A CFD-DEM Analysis of Particle Attrition in a Cyclone
Authors
Fabio Fulchini - Presenter, University of Leeds
Mojtaba Ghadiri, University of Leeds
Mohammad Mahdi Yazdanpanah, TOTAL
Benjamin Amblard, IFP Energies nouvelles
Thierry Gauthier, IFP Energies nouvelles
Stephane Bertholin, IFP Energies nouvelles
Antonia Borissova, University of Leeds
Cyclones are used to separate entrained particles from the flue gas streams. Particles entering a cyclone are subjected to a radial centrifugal force field, driving them to the cyclone walls, where they experience collisional and rapid shearing stresses. For frangible particles this could lead to attrition and dust generation, whilst for hard particles wear of cyclone wall could occur.
In this work we address the issue of attrition of manganese di-oxide particles used in the CLC process. A CFD-DEM analysis of particle motion and interactions is used to calculate the frequency of collisions, impact velocities and shear stresses. These are then coupled with a model of particle breakage due to impact and of surface wear, in order to predict attrition in a cyclone. The outcome of the work is presented, providing a correlation of the attrition extent as a function of particle properties and operating conditions.