Application of a Twin-plane Electrical Capacitance Tomography Sensor for Characterising Bubble Behaviour in a Gas-solids Fluidized Bed

Xiaoxu Li, Artur Jaworski, Xiaoan Mao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Fluidized beds have been used extensively in general chemical engineering applications. However, due to their complex hydrodynamic characteristics, conventional measurement techniques are insufficient to obtain a full understanding. Electrical Capacitance Tomography (ECT) has been developed as a non-invasive measurement technique and applied to study gas-solids fluidized beds. This paper describes experiments carried out in a bench-scale fluidized bed using air and silica sand as gas-solids system. A twin-plane ECT sensor with 10 mm long measuring electrodes was designed and fabricated to study the single bubbling regime. This was based on numerical simulations to ensure that the measured capacitance values are within the detectable range of the ECT system. 2D and 3D frame-based visual analysis of bubbles formed in single bubbling regime are presented. Averaged bubble rising velocity derived by cross-correlation technique has been compared with existing empirical correlations. Good overall agreement has been found.
Original languageEnglish
Title of host publicationLecture Notes in Engineering and Computer Science
Subtitle of host publicationProceedings of The World Congress on Engineering 2017, WCE 2017, 5-7 July, 2017, London, U.K
EditorsS.I. Ao, Len Gelman, David W.L. Hukins, Andrew Hunter, A.M. Korsunsky
PublisherNewswood Limited
Pages1100-1105
Number of pages6
Volume2
ISBN (Print)9789881404800
Publication statusPublished - 1 Jul 2016
Externally publishedYes
EventInternational Association of Engineers World Congress on Engineering 2016 - London, United Kingdom
Duration: 29 Jun 20161 Jul 2016
http://www.iaeng.org/WCE2016/ (Link to Conference Website)

Publication series

NameLecture Notes in Engineering and Computer Science
PublisherNewswood Limited
Volume2230
ISSN (Print)2078-0958
ISSN (Electronic)2078-0966

Conference

ConferenceInternational Association of Engineers World Congress on Engineering 2016
Abbreviated titleWCE 2016
CountryUnited Kingdom
CityLondon
Period29/06/161/07/16
Internet address

Fingerprint

Fluidized beds
Tomography
Capacitance
Sensors
Gases
Silica sand
Chemical engineering
Hydrodynamics
Electrodes
Computer simulation
Air
Experiments

Cite this

Li, X., Jaworski, A., & Mao, X. (2016). Application of a Twin-plane Electrical Capacitance Tomography Sensor for Characterising Bubble Behaviour in a Gas-solids Fluidized Bed. In S. I. Ao, L. Gelman, D. W. L. Hukins, A. Hunter, & A. M. Korsunsky (Eds.), Lecture Notes in Engineering and Computer Science: Proceedings of The World Congress on Engineering 2017, WCE 2017, 5-7 July, 2017, London, U.K (Vol. 2, pp. 1100-1105). (Lecture Notes in Engineering and Computer Science; Vol. 2230). Newswood Limited.
Li, Xiaoxu ; Jaworski, Artur ; Mao, Xiaoan. / Application of a Twin-plane Electrical Capacitance Tomography Sensor for Characterising Bubble Behaviour in a Gas-solids Fluidized Bed. Lecture Notes in Engineering and Computer Science: Proceedings of The World Congress on Engineering 2017, WCE 2017, 5-7 July, 2017, London, U.K. editor / S.I. Ao ; Len Gelman ; David W.L. Hukins ; Andrew Hunter ; A.M. Korsunsky. Vol. 2 Newswood Limited, 2016. pp. 1100-1105 (Lecture Notes in Engineering and Computer Science).
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abstract = "Fluidized beds have been used extensively in general chemical engineering applications. However, due to their complex hydrodynamic characteristics, conventional measurement techniques are insufficient to obtain a full understanding. Electrical Capacitance Tomography (ECT) has been developed as a non-invasive measurement technique and applied to study gas-solids fluidized beds. This paper describes experiments carried out in a bench-scale fluidized bed using air and silica sand as gas-solids system. A twin-plane ECT sensor with 10 mm long measuring electrodes was designed and fabricated to study the single bubbling regime. This was based on numerical simulations to ensure that the measured capacitance values are within the detectable range of the ECT system. 2D and 3D frame-based visual analysis of bubbles formed in single bubbling regime are presented. Averaged bubble rising velocity derived by cross-correlation technique has been compared with existing empirical correlations. Good overall agreement has been found.",
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Li, X, Jaworski, A & Mao, X 2016, Application of a Twin-plane Electrical Capacitance Tomography Sensor for Characterising Bubble Behaviour in a Gas-solids Fluidized Bed. in SI Ao, L Gelman, DWL Hukins, A Hunter & AM Korsunsky (eds), Lecture Notes in Engineering and Computer Science: Proceedings of The World Congress on Engineering 2017, WCE 2017, 5-7 July, 2017, London, U.K. vol. 2, Lecture Notes in Engineering and Computer Science, vol. 2230, Newswood Limited, pp. 1100-1105, International Association of Engineers World Congress on Engineering 2016, London, United Kingdom, 29/06/16.

Application of a Twin-plane Electrical Capacitance Tomography Sensor for Characterising Bubble Behaviour in a Gas-solids Fluidized Bed. / Li, Xiaoxu; Jaworski, Artur; Mao, Xiaoan.

Lecture Notes in Engineering and Computer Science: Proceedings of The World Congress on Engineering 2017, WCE 2017, 5-7 July, 2017, London, U.K. ed. / S.I. Ao; Len Gelman; David W.L. Hukins; Andrew Hunter; A.M. Korsunsky. Vol. 2 Newswood Limited, 2016. p. 1100-1105 (Lecture Notes in Engineering and Computer Science; Vol. 2230).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - Fluidized beds have been used extensively in general chemical engineering applications. However, due to their complex hydrodynamic characteristics, conventional measurement techniques are insufficient to obtain a full understanding. Electrical Capacitance Tomography (ECT) has been developed as a non-invasive measurement technique and applied to study gas-solids fluidized beds. This paper describes experiments carried out in a bench-scale fluidized bed using air and silica sand as gas-solids system. A twin-plane ECT sensor with 10 mm long measuring electrodes was designed and fabricated to study the single bubbling regime. This was based on numerical simulations to ensure that the measured capacitance values are within the detectable range of the ECT system. 2D and 3D frame-based visual analysis of bubbles formed in single bubbling regime are presented. Averaged bubble rising velocity derived by cross-correlation technique has been compared with existing empirical correlations. Good overall agreement has been found.

AB - Fluidized beds have been used extensively in general chemical engineering applications. However, due to their complex hydrodynamic characteristics, conventional measurement techniques are insufficient to obtain a full understanding. Electrical Capacitance Tomography (ECT) has been developed as a non-invasive measurement technique and applied to study gas-solids fluidized beds. This paper describes experiments carried out in a bench-scale fluidized bed using air and silica sand as gas-solids system. A twin-plane ECT sensor with 10 mm long measuring electrodes was designed and fabricated to study the single bubbling regime. This was based on numerical simulations to ensure that the measured capacitance values are within the detectable range of the ECT system. 2D and 3D frame-based visual analysis of bubbles formed in single bubbling regime are presented. Averaged bubble rising velocity derived by cross-correlation technique has been compared with existing empirical correlations. Good overall agreement has been found.

M3 - Conference contribution

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Li X, Jaworski A, Mao X. Application of a Twin-plane Electrical Capacitance Tomography Sensor for Characterising Bubble Behaviour in a Gas-solids Fluidized Bed. In Ao SI, Gelman L, Hukins DWL, Hunter A, Korsunsky AM, editors, Lecture Notes in Engineering and Computer Science: Proceedings of The World Congress on Engineering 2017, WCE 2017, 5-7 July, 2017, London, U.K. Vol. 2. Newswood Limited. 2016. p. 1100-1105. (Lecture Notes in Engineering and Computer Science).