Membrane superstructure optimization for carbon capture from cement plants. Water content influence on optimal solution.
In: International Journal of Greenhouse Gas Control, Jg. 129 (2023-10-01), S. N.PAG
academicJournal
Zugriff:
• Energy-efficient processes for CO 2 capture from cement plants using membrane-based superstructure. • Assessment of water influence on the separation from a Process Systems Engineering perspective. • The optimal cost of capturing CO 2 from wet flue gases is nearly 1.5 times that of a dry mixture. • Two membrane stages is unable to reach high separation targets when wet feed gas is considered. A four-membrane superstructure, embedding different connection alternatives and driving force generation options, was extended to consider a four-component wet flue gas mixture. Three case scenarios were assessed for treating a flue gas stream from a cement plant. By minimizing the specific total annual cost (sTAC), each case converged to a distinct local optimal arrangement, achieving the same separation target (90% CO 2 recovery and 95% CO 2 purity on the concentrated stream), thus highlighting the versatility of the model. In terms of the same superstructure and cost model, the optimal solution for capturing CO 2 from wet flue gases is approximately 1.5 times higher than that of a dry mixture. A commonly published optimal two membrane-stage configuration fails to achieve high separation targets, even with low water content. The most cost-effective approach is to eliminate water at the beginning of the process. The energy consumed for CO 2 pumping and compression is offset by energy generated during retentate expansion, resulting in a surplus that reduces the overall energy consumption to drive the process. [ABSTRACT FROM AUTHOR]
Titel: |
Membrane superstructure optimization for carbon capture from cement plants. Water content influence on optimal solution.
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Autor/in / Beteiligte Person: | Arias, Ana Marisa ; Scenna, Nicolás José ; Mores, Patricia Liliana |
Zeitschrift: | International Journal of Greenhouse Gas Control, Jg. 129 (2023-10-01), S. N.PAG |
Veröffentlichung: | 2023 |
Medientyp: | academicJournal |
ISSN: | 1750-5836 (print) |
DOI: | 10.1016/j.ijggc.2023.103964 |
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