级间隙高度和表观气速对多级环流反应器混合和传质的影响

陶金亮1 黄建刚1,2 肖航2 杨超2,3 黄青山2,3

(1.河北工业大学化工学院, 天津 300130)
(2.中国科学院青岛生物能源与过程研究所, 山东青岛 266101)
(3.中国科学院过程工程研究所中国科学院绿色过程与工程重点实验室, 北京 100190)

【摘要】针对应用广泛的简单多级环流反应器, 研究了级间隙高度和表观气速对其混合和传质的影响规律。发现简单多级环流反应器的各级存在着非正常流动、过渡及正常流动三个典型流动状态, 且流动状态的转变存在着受级间隙高度影响的两个临界表观气速, 并提出了相应的预测模型。研究结果表明:级间隙高度越大, 多级环流反应器内形成正常流型所需的表观气速越大;各级上升管和降液管的气含率会增高, 且相同条件下第三级气含率最大, 第二级次之, 第一级气含率最小;各级的循环液速会增大, 且第一级循环液速最大, 第二级次之, 第三级最小;混合时间会缩短, 而传质系数会增大。本研究可为工业多级环流反应器的科学设计、放大和操作提供重要指导。

【关键词】 多级环流反应器; 级间隙高度; 气含率; 循环液速; 传质; 两相流;

【DOI】

【基金资助】 国家重点研发计划项目 (2016YFB0301701) 国家重点研发计划项目 (2016YFB0301701) 国家自然科学基金项目 (21376254, 91434114) 国家自然科学基金项目 (21376254, 91434114) 中国科学院科研装备研制项目 (YZ201641) 中国科学院科研装备研制项目 (YZ201641) 中国科学院关键技术人才项目 (Y8110519DM) 中国科学院关键技术人才项目 (Y8110519DM)

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This Article

ISSN:1003-3386

CN: 11-5370/D

Vol 35, No. 06, Pages 119-156

November 2018

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Article Outline

摘要

  • 引言
  • 1 实验装置和测量方法
  • 2 实验结果与讨论
  • 3 结论
  • 符号说明
  • 参考文献