Application of a high speed ECT system to online monitoring of pneumatic conveying process

Yang, Chengyi; Cui, Ziqiang; Xue, Qing; Wang, Huaxiang; Zhang, Dongfeng; Geng, Yide

doi:10.1016/j.measurement.2013.10.024

Cited by 14 publications

(7 citation statements)

References 30 publications

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“…The iterative algorithms can reconstruct high quality with reasonable time for all the tested flow regimes. The algorithms have been applied to various practical experiments, such as liquid film thickness estimation (Cui et al , 2014), pneumatic conveying coal ash measurement (Wang et al , 2013; Yang et al , 2014, 2011), two-phase flow monitoring (Wang et al , 2014; Xu et al , 2010; Yang et al , 2012), fluidized bed (Wang and Yang, 2011) and human thorax ventilation distribution measurement (Fan and Wang, 2010b). The performance of the algorithms varies significantly in terms of the selected evaluation metrics and depending upon practical imaging tasks.…”

Section: Discussionmentioning

confidence: 99%

A review on image reconstruction algorithms for electrical capacitance/resistance tomography

Cui

Wang

Xue

et al. 2016

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175

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Purpose Electrical capacitance tomography (ECT) and electrical resistance tomography (ERT) are promising techniques for multiphase flow measurement due to their high speed, low cost, non-invasive and visualization features. There are two major difficulties in image reconstruction for ECT and ERT: the “soft-field”effect, and the ill-posedness of the inverse problem, which includes two problems: under-determined problem and the solution is not stable, i.e. is very sensitive to measurement errors and noise. This paper aims to summarize and evaluate various reconstruction algorithms which have been studied and developed in the word for many years and to provide reference for further research and application. Design/methodology/approach In the past 10 years, various image reconstruction algorithms have been developed to deal with these problems, including in the field of industrial multi-phase flow measurement and biological medical diagnosis. Findings This paper reviews existing image reconstruction algorithms and the new algorithms proposed by the authors for electrical capacitance tomography and electrical resistance tomography in multi-phase flow measurement and biological medical diagnosis. Originality/value The authors systematically summarize and evaluate various reconstruction algorithms which have been studied and developed in the word for many years and to provide valuable reference for practical applications.

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Section: Discussionmentioning

confidence: 99%

A review on image reconstruction algorithms for electrical capacitance/resistance tomography

Cui

Wang

Xue

et al. 2016

Self Cite

175

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“…The fraction of the pipe cross-section occupied by the passing powder, denoted as the volume fraction, is measured with the aid of a fibre optics probe. The probe was positioned horizontally at three different sections on the rig: on the vertical pipe, on the horizontal pipe, and at the upstream of the powder receiving hopper (7). Fig.…”

Section: 1mentioning

confidence: 99%

“…More reliable and accurate techniques are needed to analyse, understand and unravel all these interactions. Various non-intrusive techniques such as electrical capacitance tomography (ECT) [6,7] and optical measurements [8,9,10,11,12,13] have been applied to the pneumatic conveying of bulk solids. Optical measurement techniques are based on resolved imaging of particles, attenuation of transmitted light or a Doppler shift.…”

Section: Introductionmentioning

confidence: 99%

“…They are known to be responsible for gas-solid flow structures common in cohesive powder transport such as particle roping, deposition, dispersion and clogging. Most of the optical measurement techniques have focused on horizontal pneumatic conveying lines [6,8,9,10], while others included a single 90° bend [12], double 90° bends [13], and multiple 90° bends [7] in horizontal-to-vertical (H-V) and vertical-to-horizontal (V-H) pipe arrangements. The current study focuses on the three most common bend orientations were studied i.e.…”

Section: Introductionmentioning

confidence: 99%

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Pneumatic conveying of cohesive dairy powder: Experiments and CFD-DEM simulations

et al. 2019

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“…Taking into account very high speed of data acquisition, currently more than 200 frames per second (fps), the dynamics of bubble evolution and their motion may be examined with good accuracy. It is noteworthy that the latest achievements in ECT have improved speed of data acquisition up to 1000 fps (Yang et al 2014). The accuracy of determining the position of a moving object was analysed by Wang et al (2010a).…”

Section: Current Applications Of Ect Tomography For Research On Fluidmentioning

confidence: 99%

Applications of Electrical Capacitance Tomography for Research on Phenomena Occurring in the Fluidised Bed Reactors

Porzuczek¹

2014

Chemical and Process Engineering

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The paper presents a review of current achievements in the Electrical Capacitance Tomography (ECT) in relation to its possible applications in the study of phenomena occurring in fluidised bed reactors. Reactors of that kind are being increasingly used in chemical engineering, energetics (fluidised bed boilers) or industrial dryers. However, not all phenomena in the fluidised bed have been thoroughly understood. This results in the need to explore and develop new research methods. Various aspects of ECT operation and data processing are described with their applicability in scientific research. The idea for investigation of temperature distribution in the fluidised bed, using multimodal tomography, is also introduced. Metrological requirements of process tomography such as sensitivity, resolution, and speed of data acquiring are noted.

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Application of a high speed ECT system to online monitoring of pneumatic conveying process

Cited by 14 publications

References 30 publications

A review on image reconstruction algorithms for electrical capacitance/resistance tomography

A review on image reconstruction algorithms for electrical capacitance/resistance tomography

Pneumatic conveying of cohesive dairy powder: Experiments and CFD-DEM simulations

Applications of Electrical Capacitance Tomography for Research on Phenomena Occurring in the Fluidised Bed Reactors

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