Pneumatic Flow Characterization Using ECT Tomography Images Analysis

Open access


The control of dense phase pneumatic convening process is not a trivial task. The control of bulk solids flow phenomena requires detailed knowledge about the temporal and spatial changes of material concentration during flow. This paper describes application of electrical capacitance tomography for the characterization of the pneumatic conveying of solids. The level of concentration changes obtained with the aid of tomography imaging and calculated flow velocity allows monitoring flow behaviour during the granular material transport process. The cross-correlation technique applied for image processing as well as the calculated pixels-based flow velocity profile together with the proposed visualisation method of tomography images sequence provide information about flow conditions. The study of flow characterization, based on ECT data, was conducted for measurements gathered with different flow conditions, including flow blockage.

If the inline PDF is not rendering correctly, you can download the PDF file here.

  • [1] Beck M. S. (1981). Correlation in instruments: cross correlation flowmeters. Journal of Physics E: Scientific Instruments 14(1) 7

  • [2] Chen C. Wo&zacutelniak P. W. Romanowski A. Obaid M. Jaworski T. Kucharski J. Grudzień K. Zhao S. and Fjeld M. (2016). Using crowdsourcing for scientific analysis of industrial tomographic images. ACM Trans. Intell. Syst. Technol. 7(4) 52:1–52:25

  • [3] Datta U. Dyakowski T. and Mylvaganam S. (2007). Estimation of particulate velocity components in pneumatic transport using pixel based correlation with dual plane ECT. Chemical Engineering Journal 130(2) 87 – 99

  • [4] Filipowicz S. F. and Rymarczyk T. (2012). Measurement methods and image reconstruction in electrical impedance tomography. Electrical Review 88(6) 247 – 250

  • [5] Grudzien K. (2017). Visualization system for largescale silo flow monitoring based on ect technique. IEEE Sensors Journal 17(24) 8242–8250

  • [6] Jaworski A. J. and Dyakowski T. (2001). Application of electrical capacitance tomography for measurement of gas-solids flow characteristics in a pneumatic conveying system. Measurement Science and Technology 12(8) 1109

  • [7] Klinzing G. Rizk F. Marcus R. and Leung L. (2010). Pneumatic Conveying of Solids. A theoretical and practical approach Springer Dordrecht Heidelberg London

  • [8] Mosorov V. (2006). A method of transit time measurement using twin-plane electrical tomography. Measurement Science and Technology 17(4) 753

  • [9] Mosorov V. (2008). Flow pattern tracing for mass flow rate measurement in pneumatic conveying using twin plane electrical capacitance tomography. Particle & Particle Systems Characterization 25(3) 259–265

  • [10] Ostrowski K. Luke S. Bennett M. and Williams R. (1999). Real time visualisation and analysis of dense phase powder conveying. Powder Technology. 102(1) 1 – 13

  • [11] Romanowski A. Chaniecki Z. Grudzien K. Betiuk J. Matusiak B. and Sankowski D. (2010). Investigation of pneumatic conveying pseudoemergency induced operation with use of electrical capacitance tomography and raw data analysis in 6th World Congress on Industrial Process Tomography. pp. 196–203

  • [12] Romanowski A. Grudzien K. Chaniecki Z. and Wozniak P. (2013). Contextual processing of ect measurement information towards detection of process emergency states in. 13th International Conference on Hybrid Intelligent Systems (HIS 2013). 10.1109/HIS.2013.6920448 pp. 291–297

  • [13] Rymarczyk T. Szumowski J. Adamkiewicz P. Duda K. and Sikora J. (2012). ECT measurement system with optical detection for quality control of flow process. Electrical Review 92(12) 157 – 160

  • [14] Sankowski D. and Sikora J. (2010). Electrical Capacitance Tomography: Theoretical Basis and Applications Electrotechnical Institute Warsaw

  • [15] Sun M. Liu S. Lei J. and Li Z. (2008). Mass flow measurement of pneumatically conveyed solids using electrical capacitance tomography. Measurement Science and Technology 19(4) 045503

  • [16] Xue Q. Wang H. Yang C. and Cui Z. (2012). Dynamical lag correlation exponent based method for gas–solid flow velocity measurement using twin-plane electrical capacitance tomography. Measurement Science and Technology 23(8) 085301

  • [17] Yang W. and Peng L. (2003). Image reconstruction algorithms for electrical capacitance tomography. Meas. Sci. Technol. 14 R1–R14

  • [18] YangW. Q. (2001). Further developments in an acbased capacitance tomography system. Review of Scientific Instruments 72(10) 3902–3907

  • [19] Zhu K. Rao S. M. Wang C.-H. and Sundaresan S. (2003). Electrical capacitance tomography measurements on vertical and inclined pneumatic conveying of granular solids. Chemical Engineering Science 58(18) 4225 – 4245

Journal information
All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 177 58 2
PDF Downloads 128 57 1