尿基复混肥造粒塔内颗粒运动分析  

Analysis on particle motion in urea-based compound fertilizer prilling tower

作　　者：吴文华[1] 韩坤[1] 刘阿龙[1] 徐静安[1] 陈明良[1] 

机构地区：[1]上海化工研究院,上海200333

出　　处：《磷肥与复肥》2013年第1期16-18,共3页Phosphate & Compound Fertilizer

摘　　要：通过对尿基复混肥颗粒在造粒塔内的降落过程进行理论分析,得出颗粒运动方程。利用Fluent软件对颗粒的运动过程进行数值模拟计算。通过积分Lagrangian参考系下的颗粒运动方程,计算出颗粒运动轨迹。运动方程求解方式采用梯形离散法,分析得出颗粒的水平速度、轴向速度以及空间位置随路程和时间的变化规律。计算结果可为造粒塔的塔径设计提供参考。The equation of motion for particle is obtained by implementing theoretical analysis of urea-based compound fertilizer particle motion in prilling tower. The process of particle motion is simulated using Fluent software. The trajectories of discrete phase particles are predicted by integrating equations of motion for particles, which are written in a Lagrangian reference frame. Equations of motion for particles are solved using trapezoidal discretization scheme. Variations of particle horizontal velocity, axial velocity and location with path length and time are obtained. The results can be used to design the diameter of prilling tower.

关 键 词：尿基复混肥 造粒塔 颗粒运动轨迹 数值模拟 

分 类 号：TQ444[化学工程—化学肥料工业]