Evaporation Parameter Investigation of Single Droplet Based on the Thin-Film Theory in High Temperature Converter Gas

Against the background of dry dedusting for converter gas, the evaporation droplet is studied. Based on the traditional model of droplet evaporation, the thin-film theory is proposed and a simplified evaporation model is developed. Considering the effect of thermophysical parameters varying with temperature, Stefan flow and instaneous heating on evaporation process, the change laws of some parameters are obtained, which include evaporating rate, drop-surface temperature, and droplet diameter; and also the influence law of various gas temperature and initial diameter to evaporation process is explored under this consideration. The evaporation of a single droplet provides a theoretical foundation for the further research of evaporation mechanism in the converter gas.