Review for research of flow, mixing and reaction process in entrained flow coal gasifier

Entrained flow gasification process involves turbulent multiphase flow and the interaction of complex chemical reaction process at high temperature and pressure, covering the nozzle atomization and dispersion, complex multiphase jet flows, turbulent mixing, complex gasification reaction, flame structure and its temperature distribution and many other aspects. It is a very important research focus. In this paper, the research progress of entrained flow gasification process, which had been made in recent years, were reviewed, including the atomization mechanism of coal-water-slurry nozzle, the particle dispersion mechanism of pulverized coal nozzle, the rule of stagnation point offset of opposed impinging stream, oscillation of the impingement plane, the pattern of opposed impinging flame structure and its three-dimensional temperature field, the gasification characteristics of the typical coal and petroleum coke, and the simulation for entrained flow gasifier. It is also discussed about the research priorities of entrained flow gasification process in future.