Virtual Centre for Industrial & Process Tomography
Virtual Centre forIndustrial & Process Tomography
Tomography Prize
A tomography prize, organised by Professor Maurice Beck, was awarded to the ‘best’ paper. The technical committee who, after some deliberation over a number of candidate papers, selected "Tomographic Measurements of Micro- and Macromixing Using Dual Wavelength Photometry" by Mathias Buchmann and Professor Dieter Mewes of the University of Hannover.
Selection criteria were based on novelty and inclusion of tomographic measurements. This new technique enables the measurement of the local intensity of segregation at a multitude of points inside a stirred vessel. This is achieved by injecting a mixture of an inert and a reacting dye into the vessel.
The inert dye serves as a tracer for the macromixing, whereas the vanishing of the reacting dye shows the micromixing. The concentration fields of the dyes are measured simultaneously by transluminating the vessel from three directions with superimposed laser beams of different wavelength. The light absorption by the dyes is measured with CCD-cameras and these projections are used for the tomographic reconstruction of the concentration fields.
Low Reynolds number measurements were performed with a combination of two Rushton turbines and a combination of two Pitched Blade Impellers. The combination of the Pitched Blade Impellers yields a good axial transport but a slow micromixing. The injection in the middle between the combination of the two Rushton turbines yields a faster micromixing, but the macrotransport is limited to the region between the stirrers.
1st World Congress on Industrial Process Tomography
The First World Congress on Industrial Process Tomography was held at the Palace Hotel, Buxton, Derbyshire from April 14th-17th 1999. Over the four days, 130 delegates registered of which about half were from the UK, one-third from continental Europe and the remainder from countries as diverse as China, Australia, USA, Canada, Brazil and Japan. Roughly one-quarter of the delegates were non-academic.
Ninety papers were presented and sessions were arranged into 4 themes: Applications, Algorithms, Hardware and Emerging Technologies.
Programme
Session A1: Applications
Gas-Liquid Mixing in a stirred vessel
The Role of Electrical Resistance Tomography in the U.S. Nuclear Waste Site Characterization Program
W.Daily and A. Ramirez
Detecting Leaks from Waste Storage Ponds Using Electrical Tomographic Methods
Andrew Binley, William Daily and Abelardo Ramirez
Complex Resistivity Tomography for Environmental Applications
Abelardo Ramirez, William Daily, Andrew Binley and Douglas LaBrecque
2D and 3D Subsurface Resistivity Imaging Using a Constrained Least-Squares Algorithm
Manel Gasulla, Josep Jordana and Ramón Pallás-Areny
Leakage Detection In Buried Pipes By Electrical Resistance Imaging
Josep Jordana, Manel Gasulla and Ramón Pallás-Areny
Monitoring Flame Position and Stability in Combustion Cans Using ECT
RC Waterfall, R He, P Wolanski and Z Gut
Internal Structures in Fluid Beds of Different Scales: An Application of Electrical Capacitance Tomography
R B White and A Zakhari
Using ERT For Multi-Phase Flow Monitoring
W W Loh, R C Waterfall, J Cory and G P Lucas
Analysis and Flow Regime Identification of Bubble Column Dynamics
M A Bennett, S P Luke, X Jia, R M West and R A Williams
Direct Imaging of Two-phase Flows By Electrical Impedance Measurements
Eric Hervieu and Paulo Seleghim Junior
Control of Pneumatic Conveying Using ECT
D Neuffer, A Alvarez, D H Owens, K L Ostrowski, S P Luke and R A Williams
Measurements of Gas-liquid Mixing in a Stirred Vessel using Electrical Resistance Tomography (ERT)
M Wang, A Dorward, D Vlaev and R Mann
Modelling of Multiphase Processes Using Tomographic Data for Optimisation and Control
H. Tabe, S J R Simons, J Savery, R M West and R A Williams
ECT Studies of Bead Fluidization in Vertical Mills
David M Scott and Oliver W Gutsche
Application of Capacitance Electrical Tomography for On-Line and Off-line Analysis of Flow Patterns in a Horizontal Pipeline of a Pneumatic Conveyer
KL Ostrowski, R A Williams, S P Luke and M A Bennett
Session A2: Applications
Velocity Profile of solid mass flow in a pneumatic conveyor
Industrial Monitoring of Hydrocyclone Operation Using Electrical Resistance Tomography
J Bond, J C Cullivan, N Climpson, I Faulkes, X Jia, J A Kostuch, D Payton, M Wang, S J Wang, R M West and R A Williams
Measuring Flowing Foam Density Distributions Using ERT
J J Cilliers, M Wang and S J Neethling
Interfacing of EIT into an Industrial Pressure Filter - A Practical Example
B D Grieve, T Dyakowski, R Mann and M Wang
Detecting Filter-cake Pathologies in Solid-liquid Filtration:
Semi-tech Scale Demonstrations using Electrical Resistance Tomography (ERT)
D S Vlaev, M Wang, T Dyakowski, R Mann and B D Grieve
Advanced Profile Gauge for Multiphase Systems
R B Schüller, M Halleraker and B Engebretsen
Performance and Application Studies of an Electrical Resistance Tomography System
K Primrose and C Qiu
Development of Electrical Capacitance Tomography for Solids Mass Flow Measurement and Control of Pneumatic Conveying Systems
A Arko, R C Waterfall, M S Beck, T Dyakowski, P Sutcliffe and M Byars
A Behaviour Of A Catalyst Powder Flowing Down In A Dipleg
S J Wang, D Geldart, M S Beck and T Dyakowski
Measurement of Bulk Particulates on Belt Conveyor Using Dielectric Tomography
R A Williams, S P Luke, K L Ostrowski and M A Bennett
Modelling and Mapping Electrical Resistance Changes Due to Hearth Erosion in a 'Cold' Model of a Blast Furnace
M Wang, S Johnstone, W J N Pritchard and T A York
Dynamic Combustion Tomography
Tadeusz Piotrowski, Andrzej Plaskowski, Maurice Beck and Malcolm Byars
Session S1: Algorithms
Image Reconstruction of an Electrical Capacitance Tomography System Using an Artificial Neural Network
T D Sun, R Mudde, J C Schouten, B Scarlett, C M van den Bleek
Algorithms of 3D Cone Beam Tomography For Incomplete Data
O Trofimov, S Kasjanova and D Badazhkov
An Algorithm Based On Perturbation Theory For Electrical Capacitance Tomography
L F C Jeanmeure, W B J Zimmerman, T Dyakowski,AJ Jaworski, and G A Davies
Analytical Solution to the Three Dimensional Electrical Forward Problem for a Circular Cylinder
F Kleinermann, N J Avis and F A Alhargan
Opportunities for Data Fusion in Multi-Modality Tomography
R M West and R A Williams
Microwave Imaging of 3D Lossy Dielectric Objects Using Algebraic Reconstruction Techniques
AT Nugroho and Z Wu
Information Retrieval by Electrical Capacitance Tomography: Evaluation of an Iterative Algorithm and the Importance of Boundary Conditions
H McCann, W Q Yang and N P Polydorides
Detection of Scattering and Absorption by NIR Tomography
Thomas Dierkes
Developments of 3-D Reconstruction Algorithms for ERT
P A T Pinheiro, W W Loh and R C Waterfall
An Improved Normalisation Approach For Electrical Capacitance Tomography
W Q Yang, M Byars
Development of Electromagnetic Tomography (EMT) for Industrial Applications Part 2: Image Reconstruction and Software Framework
A R Borges, J E de Oliveira, J Velez, C Tavares, F Linhares and A J Peyton
Session A3: Applications
Three-Phase Flow Measurement in the Offshore Oil Industry - Is There a Place for Process Tomography?
Richard Thorn, Geir Anton Johansen and Erling A Hammer
Development of a Variable Density Flowmeter for an Industrial Application
R Deloughry, M Young, E Pickup and L Barratt
Investigation and Model Validation of Media Motion in a Vertical Stirred Mill Using Positron Emission Particle Tracking
J Conway-Baker, R W Barley, R A Williams, A J Clarke, J A Kostuch and D J Parker
Testing of the Failure of the Solid Rocket Propellant with Tomography Methods
Krzysztof Tomkiewicz, Andrzej Plaskowski, Maurice S Beck and Malcolm Byars
Characterization of Semi-crystalline Polymers Using MRI
Apostolos Kantzas and David Axelson
Application of Gamma Camera Imaging and SPECT Systems in Chemical Processes
Apostolos Kantzas, Kelly Hamilton, Taghi Zarabi, Amit Bhargava, Ian Wright, Glen Brook and Jinwen Chen
Network Analysis of Filter Cake Pore Structure by High Resolution X-Ray Microtomography
C L Lin and J D Miller
Tomographic Measurements of Micro- and Macromixing Using the Dual Wavelength Photometry
Mathhias Buchmann and Dieter Mewes
A Portable Capacitance Probe for Detection of Interface Levels in Multi-Phase Flows - A Case Study
AJ Jaworski, T Dyakowski and G A Davies
Tomographic Imaging of the Void Distribution in Bubble Columns During Blowdown
D Schmitz and D Mewes
Session H1: Hardware
EMT sensor array design
Development of Electromagnetic Tomography (EMT) for Industrial Applications Part 1: Sensor Design and Instrumentation
A J Peyton, M S Beck, A R Borges, J E de Oliveira, G M Lyon, Z Z Yu, M W Brown and J Ferrerra
Electrical Capacitance Tomography with a Square Sensor
W Q Yang and S Liu
The Measurement of Dielectric Properties of Liquids at Microwave Frequencies Using Open-ended Coaxial Probes
A. Boughriet, Z Wu, H McCann, and L E Davis
Multi-Sensor Process Tomography System Design: Part 1 - Systems and Hardware Engineering
B S Hoyle, F J W Podd, H I Schlaberg, M Wang, R A Williams, and T A York
Two-Dimensional Simulation of Electrostatic Field for Electrical Resistance Tomography
K L Ostrowski and R A Williams
Experimental Study of the Guard Electrodes in an ERT System
Yixin Ma, Ling-An Xu and Changzhen Jiang
Void Fraction and Flow Regime Determination by Low-Energy Multi-Beam Gamma-Ray Densitometry
E Abro and G A Johansen
Electrochemical Issues in Impedance Tomography
A. McNaughtan, K Meney and B Grieve
Effect of Axial Guard Electrodes on Sensing Field of Capacitance Tomographic Sensor
Hui Xu, Gang Yang and Shi Wang
Session H2: Hardware
Investigation of the Two-phase Countercurrent Flow in Structured Packings using Capacitance Tomography
T Loser, G Petritsch and D Mewes
Conception of a High Resolution X-Ray Computed Tomography Device; Application To Damage Initiation Imaging Inside Materials
E Cendre, P Duvauchelle, G Peix, J-Y Buffière and D Babot
Evaluation of Integrated Electrodes for Electrical Capacitance Tomography
Philip Williams and Trevor York
A Microcontroller-based High-speed Serial Link For Process Tomography Systems
H K S Lim and W Q Yang
Imaging Nylon Polymerisation Processes by Applying Electrical Tomography
T Dyakowski, M Mikos, D Vlaev, R Mann, G W Follows, A Boxman and M P W Wilson
Simulation Study of Capacitance Tomography Sensors
Hua Yan, Fuqun Shao, and Shi Wang
A Sensing Circuit For Micro-Capacitance Tomography
Iwan Evans, Alan Somerville and Trevor York
X-Ray Computer Tomography - Potential and Limitation for the Measurement of Local Solids Distribution in Circulating Fluidised Beds
T Grassler and K-E Wirth
Three-dimensional Effects in Electrical Impedance Tomography
M Wang
A Fast Active Differentiator Capacitance Transducer for Electrical Capacitance Tomography
W K Hartveld, P A van Halderen, R F Mudde, C M van den Bleek, H E A van den Akker and B. Scarlett
Session S2: Algorithms
Tomography of a hydrocyclone reconstructed using parametric modelling.
An Improved Simultaneous Iterative Reconstruction Technique For Electrical Capacitance Tomography
Su Bangliang, Peng Lihui, Yao Danya, Zhang Baofen
Efficient Sampling of the Exponential Radon Transform
Laurent Desbat and Raphaël Thierry
Iterative Image Reconstruction From Projections Based On Generalised Kaiser-Bessel Window Functions
Filip Jacobs and Ignace Lemahieu
Tomographic Reconstruction Using Ridge Functions
Ivan Kazantsev
Multipath Flowrate Measurements of Symmetric and Asymmetric Flows
M Rychagov, STereshchenko, B Dean and L Lynnworth
Parametric Modelling In Industrial Process Tomography
R M West, X Jia, and R A Williams
Eddy Current Tomography for Metal Solidification Imaging
Minh H Pham, Yingbo Hua and Neil B Gray
Multi-Sensor Process Tomography System Design: Part 2 - Data Processing and Systems Software Design
B S Hoyle, X Jia, H McCann, F J W Podd, H I Schlaberg, R M West and R A Williams
Development of Iterative Algorithms for Industrial Tomography
A V Likhachov, V V Pickalov, N V Chugunova and V A Baranov
Electromagnetic Monitoring of Internal Structure of Three-Dimensional Objects
V G Yakhno
Electrical Impedance and Diffuse Optical Tomography Reconstruction Software
W R B Lionheart, S R Arridge, M Schweiger, M Vauhkonen and J P Kaipio
Session E1: Emerging Technologies
ERT meso scale sensor with axially extended electrodes
Near Infra-Red Absorption Tomography for Measurement of Chemical Species Distribution
S J Carey, H McCann, D E Winterbone and E Clough
Optical Tomography for Dielectric Profiling in Processing Electronic Materials
L Zeni, R Bernini and R Pierri
Optical Tensor Field Tomography for the Determination of 3D Stress in Photoelastic Materials
D Schupp
Feasibility Study of Planar-Array Electromagnetic Inductance Tomography (EMT)
S Ramli and A J Peyton
Optical Fibres For Process Tomography: A Design Study
S Ibrahim, R G Green, K Dutton, R Abdul Rahim, K Evans and A Goude
Fibre Optic Lens Modelling for Optical Tomography
N Ramli, R G Green, R Abdul Rahim, K Evans and B Naylor
Preliminary Studies of Planar Capacitance Tomography
Alan Somerville, Iwan Evans and Trevor York
Optical Fluorescence Auto-Projection Tomography: A Novel Modality
Francis Hindle and Hugh McCann
Waveform Inversion in Acoustic Pyrometry
Helmut Sielschott and Frank Wübbeling
Simultaneous Compensation for Attenuation, Scatter and Detector Response for 2D-Emission Tomography on Nuclear Waste with Reduced Data
Raphaël Thierry, Jean-Luc Pettier and Laurent Desbat
Status and Applications of Microelectrical Resistance Tomography
H S Tapp and R A Williams
Monitoring Particle Flows by Displacement Current Sensing
M.Machida, B.Scarlett