【摘要】 喷淋塔因其设备结构简单、效率高等优点，成为了精馏与吸收等化工过程中常用的一种设备，喷淋液滴的行为直接影响过程的传质和反应强度。文章采用流体动力学多相流体欧拉—欧拉方法（CFD+PBM）和欧拉—拉格朗日方法（CFD+DPM），结合液滴在线成像设备，根据喷淋液滴的大小及其分布等实验结果，分析了鼓泡喷淋塔内液滴的流体力学特性。重点考察了塔内喷嘴位置及其分布，以及喷淋密度对喷淋液滴尺寸大小、分布、体积分数、压力场及湍动场的影响，PBM模型与DPM模型的引入准确描述了液滴在喷淋塔内的碰撞和聚并现象，确定了流体力学模型的计算预测精度在10%以内，满足工程设计的基本要求，为鼓泡喷淋塔的结构设计与操作优化提供了理论依据。更多还原

【Abstract】 Because of its simple structure and high efficiency, spray column has become a common equipment in chemical processes such as distillation and absorption, and the behavior of spray droplets directly affects the mass transfer and reaction intensity of the process. In this article, the Euler-Euler method(CFD+PBM) and Euler-Lagrange method(CFD+DPM) of multiphase fluid in fluid dynamics are adopted, and the hydrodynamic characteristics of droplets in a bubbling spray column are analyzed according to the experimental results of droplet size and distribution. The effects of nozzle position and distribution in the column and spray density on droplet size and distribution, volume fraction, pressure field and turbulent field were emphatically investigated. The introduction of PBM model and DPM model accurately described the phenomenon of droplet collision and coalescence in the spray column, and the calculation and prediction accuracy of hydrodynamic model was determined to be within 10%, which met the basic requirements of engineering design and provided theoretical basis for structural design and operation optimization of bubbling spray column.更多还原