Abstract
High-temperature dust removal is one of the important procedures for integrated coal gasification combined cycle. In this work, a moving granular bed filter that can separate the mixture of particles of different sizes spontaneously was designed. We studied the flow characteristics of binary particles in the filter based on the discrete element method (DEM). We gave the formation process of the boundary between the stationary layer and the flowing layer, which should have a reference value for the control of the stationary layer and the design of the filter inclined groove. Typical separation trajectories of large and small particles during size segregation were also given. The degree of size segregation decreased with the increase of the mass flux of particles. Real-time control of the large particle layer thickness in the filter area can be achieved by changing the mass fraction of the inlet large particles.
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