Numerical simulation of solid-Liquid two-phase flow and abrasion characteristics in desulfurization pump

Particle concentration distribution, velocity distribution and abrasion characteristics were studied by using numerical simulation of the solid liquid two phase flow in a desulfurization pump. The volume fraction of solid particles along the blade pressure sides is higher than the suction sides and increases when the particle diameter increases. Particles in the volute are mainly distributed near the wall. The volume fraction increases with the increase of particle diameter. The relative velocity vector direction is basically along the blade surface. This indicates that it's the sliding wear in the blades. Particles collide with the volute wall with a small angle. The angle increases with the increase of the particle diameter. Solid particles move to the volute outlet along walls while they extrude the walls by the effect of centrifugal force. So serious abrasion appears in the volute. The particles moving track is disorder near the position of volute tongue. The impact wear occurs near the tongue region. Numerical simulation results are consistent with the actual situation. It follows that the calculating method is feasible.