In order to study the flow behavior of gassolid twophase flow through a horizontal diffuser

the flow situation of gassolid twophase flow with defferent size solid particles

different gas flow rate

and different inlet position of the particles has been measured by using particle image vilocimetry (PIV) technology. It is found from the test that the gas velocity was obviously accelerated with the existence of solid particles after the crosssection in diffuser to be expanded

and only the solid particles with a definite size can make the gas to have higher velocity. For the same flow rate

the inlet position of solid particles can also greatly affect the flow velocity of particles in the pipeline.