A 32-electrode electrical capacitance volume tomography (ECVT) system was designed to investigate the characteristics of particles flow in rectangular spouted bed. To calculate the sensitive field

the finite element simulation model was established. The sensor characteristics were simulated and analyzed. The accuracy of sensitive field was verified by imaging. By making scale solid model

the capacitance of electrode couples attached around the model was carried out by using the system. Linear back projection (LBP) algorithm was adopted to reconstruct the distribution of three-dimensional dielectric constant in the bed. The results indicated that the 32-electrode ECVT system can detect the regular movement of particles from static to circular in the spouted bed effectively

which provided another effective method for the research of motion characteristics of particles in the spouted bed.