A1 Journal article (refereed), original research

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

Open Access publication

Publication Details

Authors: Koulountzios Panagiotis, Aghajanian Soheil, Rymarczyk Tomasz, Koiranen Tuomas, Soleimani Manuchehr

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/s21216995

Permanent website address: https://www.mdpi.com/1424-8220/21/21/6995

Open Access: Open Access publication


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.

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Last updated on 2021-26-10 at 10:25