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Article

An Ultrasound Tomography Method for Monitoring CO2 Capture Process Involving Stirring and CaCO3 Precipitation

1
Engineering Tomography Laboratory (ETL), Department of Electronic and Electrical Engineering, University of Bath, Bath BA2 7AY, UK
2
Research & Development Centre Netrix S.A., Wojciechowska 31, 20-704 Lublin, Poland
3
School of Engineering Science, LUT University, Yliopistonkatu 34, 53850 Lappeenranta, Finland
*
Author to whom correspondence should be addressed.
Academic Editor: Min Yong Jeon
Sensors 2021, 21(21), 6995; https://doi.org/10.3390/s21216995
Received: 16 September 2021 / Revised: 16 October 2021 / Accepted: 19 October 2021 / Published: 21 October 2021
(This article belongs to the Special Issue Tomographic Sensors for Industrial Process Control)
In this work, an ultrasound computed tomography (USCT) system was employed to investigate the fast-kinetic reactive crystallization process of calcium carbonate. USCT measurements and reconstruction provided key insights into the bulk particle distribution inside the stirred tank reactor and could be used to estimate the settling rate and settling time of the particles. To establish the utility of the USCT system for dynamical crystallization processes, first, the experimental imaging tasks were carried out with the stirred solid beads, as well as the feeding and stirring of the CaCO3 crystals. The feeding region, the mixing process, and the particles settling time could be detected from USCT data. Reactive crystallization experiments for CO2 capture were then conducted. Moreover, there was further potential for quantitative characterization of the suspension density in this process. USCT-based reconstructions were investigated for several experimental scenarios and operating conditions. This study demonstrates a real-time monitoring and fault detection application of USCT for reactive crystallization processes. As a robust noninvasive and nonintrusive tool, real-time signal analysis and reconstruction can be beneficial in the development of monitoring and control systems with real-world applications for crystallization processes. A diverse range of experimental studies shown here demonstrate the versatility of the USCT system in process application, hoping to unlock the commercial and industrial utility of the USCT devices. View Full-Text
Keywords: ultrasound computed tomography; travel-time imaging; time-of-flight transmission imaging; mixing process; crystallization process; CO2 capturing via crystallization ultrasound computed tomography; travel-time imaging; time-of-flight transmission imaging; mixing process; crystallization process; CO2 capturing via crystallization
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MDPI and ACS Style

Koulountzios, P.; Aghajanian, S.; Rymarczyk, T.; Koiranen, T.; Soleimani, M. An Ultrasound Tomography Method for Monitoring CO2 Capture Process Involving Stirring and CaCO3 Precipitation. Sensors 2021, 21, 6995. https://doi.org/10.3390/s21216995

AMA Style

Koulountzios P, Aghajanian S, Rymarczyk T, Koiranen T, Soleimani M. An Ultrasound Tomography Method for Monitoring CO2 Capture Process Involving Stirring and CaCO3 Precipitation. Sensors. 2021; 21(21):6995. https://doi.org/10.3390/s21216995

Chicago/Turabian Style

Koulountzios, Panagiotis, Soheil Aghajanian, Tomasz Rymarczyk, Tuomas Koiranen, and Manuchehr Soleimani. 2021. "An Ultrasound Tomography Method for Monitoring CO2 Capture Process Involving Stirring and CaCO3 Precipitation" Sensors 21, no. 21: 6995. https://doi.org/10.3390/s21216995

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