为实现脱硫废水的高效气化，采用实验与模拟相结合的方法，建立了烟道内离散液滴运动和气液两相传热传质模型，并通过脱硫废水蒸发实验验证了该模型的有效性，最终获得脱硫废水高效气化途径。结果表明：脱硫废水完全气化长度随烟速的增加先减小后增大，即存在最佳烟速可使得液滴完全气化长度最小，通过调节烟速达到最佳值可实现脱硫废水的高效气化；烟温越高最佳烟速越小，喷液量越大最佳烟速越大。在研究的参数范围内，获得最佳烟速分别与烟温和喷液量之间的定量关系式。

In order to achieve efficient evaporation of desulfurization waste water,the models of liquid droplet movement and gasliquid twophase heat and mass transfer in a flue are established,and the effectiveness of the model is verified by an evaporation experiment of desulfurization waste water.In this paper,the efficient evaporation of desulfurization waste water was investigated using simulation along with experiment.It has been found that the complete vaporization length of desulfurization waste water decreases first and then increases with the increase of flue gas velocity.There is an optimum flue gas velocity that leads to the minimum complete vaporization length,and the high efficient evaporation of desulfurization waste water can be achieved by adjusting the flue gas velocity to the optimum value.In addition,the higher the flue gas temperature is,the smaller the optimum flue gas velocity is,and the stronger the waste water flow is,the higher the optimum flue gas velocity is.In the range of parameters studied in this paper,the quantitative relationships of the optimum flue gas velocity with the flue gas temperature and waste water flow are obtained.

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