Carbon capture is the foundation of carbon dioxide (CO2) capture and storage, or utilisation. Since the CO2 must be transported from the capture site to the utilisation or storage site, the phrase carbon capture, transportation, utilisation and storage, or CCTUS, is helpful to describe the full value chain.
Capturing CO2 from a flue gas stream often relies on a solvent or solid adsorbent material that is sensitive to other chemicals in the raw flue gas such as sulfur dioxide (SO2). So, the CO2 separation, or capture, is often the last stage in a complex arrangement of flue gas treatment (FGT).
Measurement and control of the CO2 purity through the CCTUS process and the analysis of critical impurities relies on gas analysis instrumentation. Some of the gas analysers are like those that have been used in continuous emissions monitoring (CEM) for decades. However, the measurement of CO2 purity is an emerging requirement.
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