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过程工程学报 ›› 2016, Vol. 16 ›› Issue (3): 380-387.DOI: 10.12034/j.issn.1009-606X.215376

• 流动与传递 • 上一篇    下一篇

柱形和锥形移动床中气体的扩散特性

贾海兵 李晨1 卫思辰 范怡平 卢春喜   

  1. 石油大学（北京）重质加工国家重点实验室 中国石油大学(北京)重质油国家重点实验室 中国石油大学(北京)重质油国家重点实验室 中国石油大学(北京)化学工程学院 石油大学（北京）重质加工国家重点实验室
  • 收稿日期:2015-11-05 修回日期:2016-01-18 出版日期:2016-06-20 发布日期:2017-04-28
  • 通讯作者: 贾海兵

Gas Dispersion Behaviors in a Cylindrical and Conical Moving Bed

JIA Hai-bing LI Chen WEI Si-chen FAN Yi-ping LU Chun-xi   

  1. State Key Laboratory of Heavy Oil, China University of Petroleum State Key Laboratory of Heavy Oil, China University of Petroleum State Key Laboratory of Heavy Oil, China University of Petroleum (Beijing)
  • Received:2015-11-05 Revised:2016-01-18 Online:2016-06-20 Published:2017-04-28
  • Contact: JIA Hai-bing

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摘要： 采用脉冲氦气体示踪技术研究了柱形和锥形移动床中气相的扩散特性，并与实验结果进行对比. 结果表明，在主体流动区(0.110.89)，柱形床会出现向下窜气的现象，而锥形床中向下窜气量降低40%~50%，气相径向流动更趋近平推流. 根据径向气流在柱形和锥形移动床内的流动特点，用实验数据回归了气体浓度分布的无量纲经验关联式，计算值与实验值吻合较好.

关键词: 柱形移动床, 锥形移动床, 气体扩散特性

Abstract: The gas dispersion behavior in the cylindrical and conical moving bed was investigated/compared by using the helium gas tracing technique. The experimental results show that radial flow of cylindrical bed assumes a plug pattern while the axial gas distribution of conical bed was non-uniform in the main flowing zone (0.110.89), the gas bypassing appears in the cylindrical moving bed and radial flow of conical bed tends to a plug pattern. Because the gas bypassing would be reduced by about 40%~50% in conical bed. According to the radial flow characteristics in the cylindrical and conical moving bed, furthermore, an empirical model for estimating the axial distribution of gas concentration was established based on the experimental data and the theoretical analysis, which agreed with the experimental data.

Key words: cylindrical moving bed, conical moving bed, gas dispersion behavior

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