A1 Journal article (refereed), original research

Real-Time Fault Detection and Diagnosis of CaCO3 Reactive Crystallization Process by Electrical Resistance Tomography Measurements


Open Access publication


Publication Details

Authors: Aghajanian Soheil, Rao Guruprasad, Ruuskanen Vesa, Wajman Radosław, Jackowska-Strumillo Lidia, Koiranen Tuomas

Publisher: MDPI

Publication year: 2021

Language: English

Related journal or series: Sensors

Volume number: 21

Issue number: 21

eISSN: 1424-8220

JUFO level of this publication: 1

Digital Object Identifier (DOI): http://dx.doi.org/10.3390/s21216958

Permanent website address: https://www.mdpi.com/1424-8220/21/21/6958

Open Access: Open Access publication


Abstract

In the present research work, an electrical resistance tomography (ERT) system is utilized as a means for real-time fault detection and diagnosis (FDD) during a reactive crystallization process. The calcium carbonate crystallization is part of the carbon capture and utilization scheme where process monitoring and malfunction diagnostics strategies are presented. The graphical logic representation of the fault tree analysis methodology is used to develop the system failure states. The measurement consistency due to the use of a single electrode from a set of ERT electrodes for malfunction identification is experimentally and quantitatively investigated based on the sensor sensitivity and standard deviation criteria. Electrical current measurements are employed to develop a LabVIEW-based process automation program by using the process-specific knowledge and historical process data. Averaged electrical current is correlated to the mechanical failure of the stirrer through standard deviation evaluation, and slopes of the measured data are used to monitor the pump and concentrations status. The performance of the implemented methodology for detecting the induced faults and abnormalities is tested at different operating conditions, and a basic signal-based alarming technique is developed.


Last updated on 2021-27-10 at 14:38