Imaging bottom zone of fluidised beds by electrical capacitance tomography

S. Liu, W.Q. Yang, H. Wang, F. Jiang

Research output: Contribution to journalArticlepeer-review


It is difficult to know the details of material distribution in a fluidised bed. Electrical capacitance tomography (ECT) technology has been developed for imaging industrial processes containing dielectric materials. This paper discusses the principles of ECT and presents the first experimental results of using ECT to measure gas/solids distribution in square circulating fluidised beds (CFB). A wide range of fluidisation conditions was tested, from bubbling to circulating fluidisation. It has been shown that over the range, ECT can provide solids concentration and voids distribution instantaneously. Different fluidisation regimes could also be identified from the reconstructed images.
Original languageEnglish
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2001


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