Numerical Simulation on the Distribution of Particles Concentration in Scrubbing-Cooling Chamber of Coal-Water-Slurry Entrained-Flow Gasifier

A three-dimensional Euler-Lagrange model was used to study the distribution of particles in scrubbing-cooling chamber of coal-water-slurry (CWS) entrained-flow gasifier. Comparisons of computational results with experimental data are made. The effects of operating conditions and size grading on the particle number density distribution in chamber is revealed through simulation. The results indicate that the axial distribution of particle number density becomes wave-shaped in pool. Large particles are ease to subside and small particles are ease to suspend. With changing the particle size grading, the particle number density can be changed obviously.