石油炼制与化工 ›› 2019, Vol. 50 ›› Issue (3): 13-18.

• 基础研究 • 上一篇    下一篇

催化裂化催化剂喷雾干燥过程CFD模型

秦娅,吕庐峰,侯栓弟   

  1. 中国石化石油化工科学研究院
  • 收稿日期:2018-06-21 修回日期:2018-11-05 出版日期:2019-03-12 发布日期:2019-03-26
  • 通讯作者: 秦娅 E-mail:qinya.ripp@sinopec.com
  • 基金资助:
     

CFD MODELING OF SPRAY DRYING PROCESS FOR FCC CATALYST PREPARATION

  1.  
  • Received:2018-06-21 Revised:2018-11-05 Online:2019-03-12 Published:2019-03-26
  • Supported by:
     

摘要: 基于气固两相流理论和计算流体力学(CFD)知识,结合催化裂化催化剂喷雾干燥过程的特点,运用欧拉-拉格朗日(Eulerian-Lagrangian)模型,建立喷雾干燥塔两相流CFD模型,对制备催化裂化催化剂的喷雾干燥塔内气浆两相流动量、质量和热量传递过程进行数值模拟计算。通过模拟计算结果分析,可以得到喷雾干燥塔内流速分布、温度分布以及颗粒运行轨迹等信息,从而对塔内流场信息进行可视化。将模拟结果与中型喷雾干燥塔实验数据进行对比,结果表明二者趋势一致,出口温度误差在10%以内,证明所建模型可靠,可用于喷雾干燥过程的模拟。

关键词: 喷雾干燥, 催化裂化催化剂, 欧拉-拉格朗日, 数值模拟

Abstract: On the basis of gas-liquid two-phase flow theory (CFD) and properties of FCC spray drying process, a CFD model was developed to simulate the amount of two phases flow, heat and mass transfer process in the spray dryer, and the flow velocity patterns, temperature distribution, and solid particle trajectories in the spray dryer are then obtained and visualized. The simulation results are compared with the experimental data of spray drying tower in pilot plant, and the results showed that the two trends are consistent with the maximum deviation of less than 10%. The model can be used to simulate the FCC catalyst spray drying process.

Key words: spray dryer, FCC catalyst, Eulerian-Lagrangian method, numerical simulation

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