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

Panagiotis Koulountzios¹, Soheil Aghajanian², Tomasz Rymarczyk²

¹Engineering Tomography Laboratory (ETL), Department of Electronic and Electrical Engineering, University of Bath, Bath BA2 7AY, UK.

Sensors (Basel, Switzerland)

|November 13, 2021

Summary

Ultrasound computed tomography (USCT) effectively monitors fast-kinetic reactive crystallization of calcium carbonate in real-time. This noninvasive technique provides insights into particle distribution, aiding process control and fault detection in industrial applications.

Keywords:

CO2 capturing via crystallization crystallization process mixing process time-of-flight transmission imaging travel-time imaging ultrasound computed tomography

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Published on: October 21, 2016

Area of Science:

Process Engineering
Chemical Engineering
Materials Science

Background:

Crystallization processes are crucial in chemical manufacturing.
Real-time monitoring of dynamic crystallization is challenging.
Calcium carbonate crystallization is vital for CO2 capture.

Purpose of the Study:

To investigate the application of Ultrasound Computed Tomography (USCT) for real-time monitoring of fast-kinetic reactive crystallization.
To demonstrate the capability of USCT in analyzing particle distribution and dynamics within a stirred tank reactor.
To explore USCT's potential for process control and fault detection in crystallization.

Main Methods:

Utilized an Ultrasound Computed Tomography (USCT) system for imaging.
Performed experiments with stirred solid beads and CaCO3 crystals.
Conducted reactive crystallization experiments for CO2 capture.
Analyzed USCT data for particle distribution, feeding, mixing, and settling times.

Main Results:

USCT successfully visualized bulk particle distribution and dynamics.
Identified feeding regions, mixing processes, and particle settling times.
Demonstrated real-time monitoring and fault detection capabilities for reactive crystallization.
Showcased potential for quantitative suspension density characterization.

Conclusions:

USCT is a versatile, noninvasive tool for real-time monitoring of reactive crystallization processes.
USCT data provides valuable insights for process development and control.
The study highlights the commercial and industrial potential of USCT devices in crystallization applications.