Advertisement
Published in:
2019 | OriginalPaper | Chapter
Measurement of the Gas-Solid Flow in a Wurster Tube Using 3D Electrical Capacitance Tomography Sensor
Authors : H. Q. Che, J. M. Ye, W. Q. Yang, H. G. Wang
Published in: The Proceedings of the International Conference on Sensing and Imaging
Publisher: Springer International Publishing
Activate our intelligent search to find suitable subject content or patents.
Select sections of text to find matching patents with Artificial Intelligence. powered by
Select sections of text to find additional relevant content using AI-assisted search. powered by
Abstract
Wurster tube plays an important role in the circulation of solid particles in a fluidized bed coating process. To investigate the flow hydrodynamic behaviors inside a Wurster-type fluidized bed, a unique 3D electrical capacitance tomography (ECT) sensor is designed and constructed to visualize the gas-solid flow structure in a Wurster fluidized bed. The ECT sensor consists of 16 electrodes, and the electrodes are attached on the inner wall of the tube. Several “cold” tests are carried out by changing the fluidization air rate and the gap height between the Wurster tube and air distributor. The solid distributions in three dimensions are reconstructed based on the sensitivity maps and measured capacitance vector. Key parameters including the measured capacitances and averaged solid concentration with different operating conditions are given and discussed. The experimental result gives valuable information for the optimization of the fluidized bed coating process.