化工进展 ›› 2015, Vol. 34 ›› Issue (3): 659-663.DOI: 10.16085/j.issn.1000-6613.2015.03.009

• 化工过程与装备 • 上一篇    下一篇

78.5升气升式环流反应器内构件优化

杨志方, 杜峰, 于清江, 郭璐玥, 张萍萍   

  1. 中国石油大学(华东)化学工程学院, 山东 青岛 266555
  • 收稿日期:2014-06-16 修回日期:2014-08-27 出版日期:2015-03-05 发布日期:2015-03-05
  • 通讯作者: 杜峰,博士,硕士生导师,研究方向为石油与天然气加工。E-mail:dufeng@upc.edu.cn。
  • 作者简介:杨志方(1987-),男,硕士研究生。
  • 基金资助:

    环流反应器工程放大基础研究2013.1-2014.12青年基金项目(13CX02504A)

Internals optimization of 78.5L airlift loop reactor

YANG Zhifang, DU Feng, YU Qingjiang, GUO Luyue, ZHANG Pingping   

  1. School of Chemical Engineering, China University of Petroleum (East China), Qingdao 266555, Shandong, China
  • Received:2014-06-16 Revised:2014-08-27 Online:2015-03-05 Published:2015-03-05

摘要: 研究了78.5L气升式环流反应器内部结构对流动性能的影响规律, 并给出最佳区间来为工业装置提供理论指导。利用Fluent软件建立数学模型与实验装置作对比, 模拟了不同气液分离区高度与外筒高度比、导流筒长度与外筒长度比和筒内外直径比对流动行为的影响规律。结果表明:数学模型和实验结果误差较小, 可以用来预测气升式环流反应器流动行为。气液分离区高度与外筒高度比值过大会导致环流阻力增大, 从而不利于流动, 比值为0.34~0.36时流动性能最佳;导流筒长度与外筒长度的比值增大可增加气含率和环流液速, 但是比值过大会引起气泡的聚合, 从而影响流动性能, 当比值为0.60~0.62时流动性能最佳;在一定范围内增加内外筒直径比会改善流动效果, 但环隙面积过小会增加环形阻力, 内外筒直径比为0.73~0.77时流动效果比较理想。

关键词: 环流反应器, 内构件模拟优化, 导流筒, Fluent, 气液分离区

Abstract: The influence of internals on 78.5L airlift loop reactor was studied and optimal values were obtained for theoretical guidance of industrial equipment. Fluent software was used to establish a mathematical model to compare with experiment result. The influence of height ratio between gas liquid separation zone and external tube, length ratio between diversion tube and external tube, and diameter ratio between diversion tube and external tube on flow behavior of airlift loop reactor was investigated. The error between simulation and experiment results was small, and the mathematical model could be used to predict flow behavior of airlift loop reactor. Circulation resistance became larger when length ratio between gas liquid separation zone and external tube was too large. Reactor flow achieved the best performance when the ratio was 0.34-0.36. Increasing length ratio between diversion tube and external tube could increase gas holdup and liquid circulation rate, but an overly large ratio would cause bubbles coalescence, which would affect flow performance. Reactor flow achieved the best performance when the ratio was 0.60-0.62. Increasing diameter ratio between diversion tube and external tube could improve flow. Loop resistance was larger when ring gap area was too small and reactor flow achieved the best performance when diameter ratio was 0.73-0.77.

Key words: loop reactor, internals simulation optimization, diversion tube, Fluent, gas liquid separation zone

中图分类号: 

京ICP备12046843号-2;京公网安备 11010102001994号
版权所有 © 《化工进展》编辑部
地址:北京市东城区青年湖南街13号 邮编:100011
电子信箱:hgjz@cip.com.cn
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持:support@magtech.com.cn