›› 2018, Vol. 49 ›› Issue (4): 58-63.

• 基础研究 • 上一篇    下一篇

CFD在丙烷脱氢流化床反应器中的应用

杜玉朋,孙乐晶,房德仁,任万忠   

  1. 烟台大学山东省化学工程与过程重点实验室
  • 收稿日期:2017-08-25 修回日期:2017-10-09 出版日期:2018-04-12 发布日期:2018-04-26
  • 通讯作者: 杜玉朋 E-mail:duzhan2005@126.com

APPLICATION OF CFD IN FLUIDIZED BED REACTOR FOR PROPANE DEHYDROGENATION

Du Yupeng,Sun Lejing,Fang Deren,Ren Wanzhong   

  • Received:2017-08-25 Revised:2017-10-09 Online:2018-04-12 Published:2018-04-26
  • Contact: Du Yupeng E-mail:duzhan2005@126.com

摘要: 为某中试循环流化床装置中的丙烷脱氢反应器建立了三维多尺度CFD流动-传热-反应耦合模型,并采用该模型对丙烷脱氢反应器的操作工况进行了参数优化研究。所建立的三维多尺度CFD模型能够较准确地刻画丙烷脱氢在整个流化床反应器内的反应历程。通过参数优化研究获得丙烷脱氢反应器的最佳操作条件为:反应温度600 ℃,体积空速2 350 h-1,催化剂装量0.8 kg,催化剂平均粒径70 μm,在此操作工况下,丙烷转化率为43%,丙烯选择性为85%,丙烯收率达37%。所建立的CFD模型能够用于丙烷脱氢流化床反应器的模拟、设计、放大与优化等过程。

关键词: 丙烷, 脱氢, 计算流体力学, 循环流化床, 反应器

Abstract: A three-dimensional multi-scale CFD model was developed for a propane dehydrogenation reactor in a pilot-scale circulating fluidized bed device. By using the CFD model,sensitivity studies on operation conditions were conducted. Findings indicated that the 3D multi-scale CFD model could describe precisely the reaction paths occuring in the propane dehydrogenation reactor. Besides,the optimum operation conditions for the propane dehydrogenation was obtained: reaction temperature of 600 ℃, GHSV of 2 350 h-1, catalyst inventory of 0.8 kg, and the mean particle diameter is 70 μm. Under the optimal conditions,the conversion of propane is 43% and the selectivity of propylene is 85%,the yield of propylene reaches up to 37%. CFD is proved to be capable of applications in the simulation, design, scale-up and optimizations of fluidized-bed reactors for propane dehydrogenation process.

Key words: propane, dehydrogenation, CFD, circulating fluidized bed, reactor