A chemical processing system for removing carbon dioxide from a carbon dioxide-containing gas mixture using an amine-based scrubbing solution that is a multicomponent liquid composition comprising water, at least one amine component for carbon dioxide capture and captured carbon dioxide, the chemical processing system comprising:
- a carbon dioxide scrubbing unit to contact the gas mixture with the amine-based scrubbing solution for capture of carbon dioxide from the gas mixture in the scrubbing solution, the scrubbing unit comprising:
- a first gas inlet to receive a feed stream of the gas mixture to the scrubbing unit with carbon dioxide for removal in the scrubbing unit;
- a first gas outlet to output a treated stream of the gas mixture from the scrubbing unit having a lower carbon dioxide concentration than the feed stream of the gas mixture to the scrubbing unit;
- a first liquid inlet to receive a feed stream of said scrubbing solution for processing in the scrubbing unit to contact the gas mixture to remove carbon dioxide from the gas mixture for capture in the scrubbing solution;
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- a first liquid outlet to output an effluent stream of rich said scrubbing solution from the scrubbing unit, the rich said scrubbing solution having a concentration of captured carbon dioxide that is larger than a concentration of captured carbon dioxide in the feed stream of said scrubbing solution;
- a scrubbing solution regeneration unit to remove at least a portion of the captured carbon dioxide from the rich said scrubbing solution and prepare a lean said scrubbing solution depleted in the captured carbon dioxide relative to the rich said scrubbing solution, the regeneration unit comprising:
- a second liquid inlet to receive for processing in the regeneration unit a feed stream to the regeneration unit including at least a portion of the rich said scrubbing solution;
- a second gas outlet to output a gas effluent stream from the regeneration unit rich in carbon dioxide released from the scrubbing solution in the regeneration unit;
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- a second liquid outlet to output a liquid effluent stream from the regeneration unit including at least a portion of the lean said scrubbing solution;
- a first fluid communication path between the second liquid outlet of the regeneration unit and the first liquid inlet of the scrubbing unit to conduct at least a portion of the lean scrubbing solution from the regeneration unit to the scrubbing unit in the feed stream of said scrubbing solution;
- a second fluid communication path between the first liquid outlet of the scrubbing unit and the second liquid inlet of the regeneration unit to conduct at least a portion of the rich said scrubbing solution from the scrubbing unit to the regeneration unit;
- an automated spectroscopic evaluation system, comprising:
- a liquid contact probe configured to contact a multicomponent liquid composition for spectroscopic investigation and to transmit spectroscopic stimulation energy to interact with the multicomponent liquid composition for the spectroscopic investigation and resulting spectroscopic response energy away from the multicomponent liquid composition;
- an energy source connected with the liquid contact probe to provide the spectroscopic stimulation energy for the spectroscopic investigation;
- a spectrometer connected with the liquid contact probe to detect the spectroscopic response energy and to output spectral data corresponding to the spectroscopic response energy;
- a machine learning spectral data analyzer connected to the spectrometer for evaluation of the spectral data to determine a concentration value for each one of a plurality of components of the multicomponent liquid composition, the plurality of components including the water, a said amine component and the captured carbon dioxide, wherein the machine learning spectral data analyzer is trained for each said component of the plurality of components over a corresponding trained concentration range for the said component;
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- the liquid contact probe is positioned to contact the scrubbing solution in a location in the scrubbing unit, the regeneration unit, the first fluid communication path or the second fluid communication path.