SCI和EI收录∣中国化工学会会刊

›› 2008, Vol. 16 ›› Issue (4): 635-639.

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Application of Electrical Capacitance Tomography to the Concentration Measurement in a Cyclone Dipleg

孙猛1, 刘石2, 李志宏2, 雷兢1   

  1. 1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080, China;
    2. School of Energy & Power Engineering, North China Electric Power University, Beijing 102206, China
  • 收稿日期:2007-09-24 修回日期:2008-03-04 出版日期:2008-08-28 发布日期:2008-08-28
  • 通讯作者: SUN Meng, E-mail: sunmeng99221@163.com
  • 基金资助:
    the National Natural Science Foundation of China(60672151,60532020)

Application of Electrical Capacitance Tomography to the Concentration Measurement in a Cyclone Dipleg

SUN Meng1, LIU Shi2, LI Zhihong2, LEI Jing1   

  1. 1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080, China;
    2. School of Energy & Power Engineering, North China Electric Power University, Beijing 102206, China
  • Received:2007-09-24 Revised:2008-03-04 Online:2008-08-28 Published:2008-08-28
  • Supported by:
    the National Natural Science Foundation of China(60672151,60532020)

摘要: Accurate solid concentration measurement plays a key role in the process industry. Measurements analyzed offline can be used to estimate process efficiencies, to identify problems in a flow, and to validate computational models. Online measurements can be used for active control. Electrical capacitance tomography (ECT) is a unique measuring technique with great potential in multiphase flow measurement. Experimental studies are carried out on a solid concentration measurement in a cyclone separator dipleg, using ECT. In this experiment eight electrodes are selected for the ECT sensor that is placed on the straight tube of the dipleg. The fluctuating characteristics according to the screw feeder and the effect of the airflow rate from the top of the cyclone are analyzed. The feasibility and reliability of the method are verified by the experimental results.

关键词: electrical capacitance tomography, concentration measurement, cyclone separator, dipleg, gas-solid two-phase flow

Abstract: Accurate solid concentration measurement plays a key role in the process industry. Measurements analyzed offline can be used to estimate process efficiencies, to identify problems in a flow, and to validate computational models. Online measurements can be used for active control. Electrical capacitance tomography (ECT) is a unique measuring technique with great potential in multiphase flow measurement. Experimental studies are carried out on a solid concentration measurement in a cyclone separator dipleg, using ECT. In this experiment eight electrodes are selected for the ECT sensor that is placed on the straight tube of the dipleg. The fluctuating characteristics according to the screw feeder and the effect of the airflow rate from the top of the cyclone are analyzed. The feasibility and reliability of the method are verified by the experimental results.

Key words: electrical capacitance tomography, concentration measurement, cyclone separator, dipleg, gas-solid two-phase flow