Title :
Investigation of the gas-solid flows in a circulating fludisied bed with multi-cyclone separators by electrical capacitance tomography
Author :
Haigang Wang ; Guizhi Qiu ; Wuqiang Yang
Author_Institution :
Inst. of Eng. Thermophys., Beijing, China
Abstract :
To investigate the gas-solid flows in a circulating fluidised bed with multi-cyclone separators, a circular ECT sensor and rectangular ECT sensor are designed and used to measure the solids distribution in a cross-section in the inlet and standpipe of cyclone separator respectively. The rectangular ECT sensor has 12 electrodes with two in each shorter side and four in each longer side. The circular ECT sensor has 8 electrodes. For image reconstruction, sensitivity maps have been calculated using a simulation package, Maxwell from Ansoft. Dynamics test of CFB processes with different fluidisation velocity are given both in the inlet and downwards standpipe of the cyclone. ECT test results are given and analyzed and compared with pressure measurement results.
Keywords :
cyclone separators; electric sensing devices; fluidised beds; image reconstruction; mechanical engineering computing; pipes; two-phase flow; Ansoft; CFB processes; Maxwell simulation package; circular ECT sensor; circulating fluidised beds; downward standpipe; electrical capacitance tomography; fluidisation velocity; gas-solid flow; image reconstruction; inlet standpipe; multicyclone separators; pressure measurement; rectangular ECT sensor; solid distribution; Boilers; Cyclones; Electrodes; Fluidization; Image reconstruction; Particle separators; Solids; CFB; Cyclone separators; ECT; Rectangular sensor;
Conference_Titel :
Imaging Systems and Techniques (IST), 2013 IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4673-5790-6
DOI :
10.1109/IST.2013.6729711
