For the first time

the three-dimensional

full-size entrained flow gasifier was simulated by CPFD（computational particle fluid dynamics） simulation method

and a gasification simulation model suitable for CPFD simulation was established. This validated the model and CPFD simulation used in entrained-flow gasification. The detailed reaction process and the probability distribution of particle residence time were obtained through CPFD simulation. The results show that both particle short-circuit and re-circulation exist in the gasifier using single burner at top. The short-circuit flow is mainly located at the central region of the gasifier. In addition

the particle reaction rate is very fast in the central region but relatively slow near the wall region. Besides

the first amount of particles flowing out of the gasifier mainly consists of the fully-reacted particles.