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过程工程学报 ›› 2016, Vol. 16 ›› Issue (4): 565-570.DOI: 10.12034/j.issn.1009-606X.216108

• 流动与传递 • 上一篇    下一篇

气液搅拌体系中宏观气含率的预测

范兵强1,张洋2,郑诗礼3,冯鑫1,张懿1,陈晓芳1,乔珊1   

  1. 1. 中国科学院过程工程研究所
    2. 中国科学院过程工程研究所湿法冶金清洁生产技术国家工程实验室
    3.
  • 收稿日期:2016-01-12 修回日期:2016-03-11 出版日期:2016-08-20 发布日期:2016-10-10
  • 通讯作者: 范兵强 1179725981@qq.com
  • 基金资助:
    国家自然科学基金青年科学基金

Estimation of Gas Holdup in a Gas?Liquid Stirred Vessel

FAN Bing-qiang 1,ZHANG Yang 2,ZHENG Shi-li 3,FENG Xin 2,WANG Shao-na 2,CHEN Xiao-fang 1,QIAO Shan 1   

  1. 1. Institute of Process Engineering, CAS
    2. Institute of Process Engineering, Chinese Academy of Sciences
    3.
  • Received:2016-01-12 Revised:2016-03-11 Online:2016-08-20 Published:2016-10-10
  • Contact: FAN Bing-qiang 1179725981@qq.com

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被引次数

2

摘要： 采用压差法和电阻探针测定了空气?水混合体系的气含率，用扭矩仪测量扭矩和转速，计算输入功率. 将气体分成进出停留气体A和内循环气体B两部分，建立宏观气含率的物理模型. 结果表明，针对不同气液混合流型，将宏观气含率分成两个阶段是合理的，?total??Vs?适用于气泛状态，?total??Vs?+?PV?Vs?适用于载气和气体完全分散状态，对于DT+DT组合桨??6, ??1, ??0.32, ??0.56, ??1. 模型对文献数据的预测较合理，且具有一定的适应性，?取决于搅拌桨类型.

关键词: 气含率, 双层搅拌桨, 气液两相流, 输出功

Abstract: The gas holdup in an air?water systems is measured using the method of differential pressure and the electric conductive probes. N and M are measured by the torque transducer and used to calculate the power input. A physical model was developed to predict the total gas holdup in a gas?liquid stirred vessel by dividing the gas in the liquid into two parts that A is the one entering and quitting the liquid, and B is the other recycling in the liquid, respectively, The results indicate that based on the difference between flow regimes in gas?liquid systems, it is reasonable that the total gas holdup should divided into two stages: ?total??Vs? for the flooding condition, ?total??Vs?+?PV?Vs? for the loading/completely dispersing conditions, and as for DT+DT, ??6, ??1, ??0.32, ??0.56, ??1. The results from literatures are predicted by the model reasonably. The model is reasoned for some other types of dual-impellers, in which ? is controlled by the types of the impellers.

Key words: gas holdup, dual-impeller, gas?liquid flow, power input