Proceedings of FOCAPD 2024ISSN: 2818-4734
Volume: 3 (2024)
LAPSE:2024.1531
Published Article
LAPSE:2024.1531
Optimal Design of Intensified Towers for CO2 Capture with Internal, Printed Heat Exchangers
Stephen Summits, Paul Akula, Debangsu Bhattacharyya, Grigorios Panagakos, Benjamin Omell, Michael Matuszewski
August 15, 2024. Originally submitted on July 9, 2024
Solvent-based carbon capture processes typically suffer from the temperature rise of the solvent due to the heat of absorption of CO2. This increased temperature is not thermodynamically favorable and results in a significant reduction in performance in the absorber column. As opposed to interstage coolers, which only remove, cool, and return the solvent at discrete locations in the column, internal coolers that are integrated with the packing can cool the process inline, which can result in improved efficiency. This work presents the modeling of these internal coolers within an existing generic, equation-oriented absorber column model that can cool the process while allowing for simultaneous mass transfer. Optimization of this model is also performed, which is capable of optimally choosing the best locations to place these devices, such that heat removal and mass transfer area are balanced. Results of the optimization have shown that optimally placed cooling elements result in a significant increase in the capture efficiency of the process, compared to a similar column with no internal cooling, with a common trend being the cooling of the column in the temperature bulge region. It is observed that by optimally placing an internal cooler, the solvent flow rate can be decreased, and the CO2 lean loading can be increased while still maintaining the same efficiency. These process changes can lead to a substantial reduction in costs due to lower reboiler duty.
Suggested Citation
Summits S, Akula P, Bhattacharyya D, Panagakos G, Omell B, Matuszewski M. Optimal Design of Intensified Towers for CO2 Capture with Internal, Printed Heat Exchangers. Systems and Control Transactions 3:222-228 (2024) https://doi.org/10.69997/sct.123118
Author Affiliations
Summits S: Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, West Virginia 26506, USA
Akula P: Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, West Virginia 26506, USA
Bhattacharyya D: Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, West Virginia 26506, USA; NETL Support Contractor, Pittsburgh, PA 15236, USA
Panagakos G: Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA; NETL Support Contractor, Pittsburgh, PA 15236, USA
Omell B: National Energy Technology Laboratory (NETL), Pittsburgh, Pennsylvania 15236, USA
Matuszewski M: National Energy Technology Laboratory (NETL), Pittsburgh, Pennsylvania 15236, USA
Journal Name
Systems and Control Transactions
Volume
3
First Page
222
Last Page
228
Year
2024
Publication Date
2024-07-10
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DOI Assigned
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PII: 0222-0228-676022-SCT-3-2024, Publication Type: Journal Article
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LAPSE:2024.1531
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https://doi.org/10.69997/sct.123118
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