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

Abstract

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

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

SUN Meng, LIU Shi, LI Zhihong, LEI Jing. Application of Electrical Capacitance Tomography to the Concentration Measurement in a Cyclone Dipleg[J]. , 2008, 16(4): 635-639.

孙猛, 刘石, 李志宏, 雷兢. Application of Electrical Capacitance Tomography to the Concentration Measurement in a Cyclone Dipleg[J]. , 2008, 16(4): 635-639.

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