Concentration and angular velocity measurement in a cyclone separator dipleg using electrical capacitance tomography

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2008,（17）
• 页码范围: 2724-2728
• 页数: 5页
• 语种: 英文
• DOI: 10.1007/s11434-008-0323-4

摘要

Cyclone separator is one of the main parts of the circulating fluidized bed (CFB) boiler. The separation efficiency of the cyclone separator is very important to the whole boiler. Electrical capacitance tomo-graphy (ECT) is a unique measuring technique with great potential in multiphase flow measurement. Experimental studies are carried out on the measurement of volumetric concentration and angular ve-locity using ECT. The former is determined through image reconstruction method, and the latter is measured by cross-correlating the capacitance fluctuations caused by the conveyed solids. The dis-tribution of void fraction in radial direction, the fluctuating characteristics, probability density function and the spectrum characteristics are analyzed. The feasibility and reliability of the method are verified by experimental results.