Abstract
The cement industry accounts for almost 7% of anthropogenic carbon dioxide emissions globally. Therefore, it is imperative to identify innovative solutions to mitigate carbon dioxide emissions from the cement industry.
This study aims to evaluate and compare the technical and environmental aspects of integrating two post-combustion carbon capture processes (CCS) into a cement plant: the conventional monoethanolamine (MEA)-based CCS process and the novel silica-alkoxylated polyethyleneimine (SPEI)-based CCS process. Three scenarios were considered: (i) a reference cement plant without CCS, (ii) the conventional MEA-based CCS system integrated into a cement plant and (iii) the novel SPEI-based CCS system integrated into a cement plant. The technical evaluation results showed that the regeneration energy requirements for the conventional MEA and novel SPEI-based CCS processes were 3.53 GJ/tonne CO2 and 2.36 GJ/tonne CO2, respectively, to achieve a capture rate of 90%. Additionally, the specific primary energy consumption for CO2 avoidance for the MEA-based and SPEI-based CCS processes was estimated at 6.5 and 4.3 GJ/tonne CO2, respectively.
The novel SPEI-based CCS process showed superior environmental performance compared to the conventional MEA-based CCS process. The midpoint analysis showed that the global warming potential of the SPEI-based CCS process was almost 7% lower than the conventional MEA-based CCS process. Similarly, the endpoint single score was conducted which showed that the SPEI-based CCS process had a lower impact on human health, ecosystems, and resources (7%, 8%, and 26% lower, respectively) compared to the MEA-based CCS process. However, in the case of reference case cement plant stand alone, the score of resource indicator was lowest due to increased demand of heat and electricity for carbon capture and liquefaction operations in case of CCS integration.
This study aims to evaluate and compare the technical and environmental aspects of integrating two post-combustion carbon capture processes (CCS) into a cement plant: the conventional monoethanolamine (MEA)-based CCS process and the novel silica-alkoxylated polyethyleneimine (SPEI)-based CCS process. Three scenarios were considered: (i) a reference cement plant without CCS, (ii) the conventional MEA-based CCS system integrated into a cement plant and (iii) the novel SPEI-based CCS system integrated into a cement plant. The technical evaluation results showed that the regeneration energy requirements for the conventional MEA and novel SPEI-based CCS processes were 3.53 GJ/tonne CO2 and 2.36 GJ/tonne CO2, respectively, to achieve a capture rate of 90%. Additionally, the specific primary energy consumption for CO2 avoidance for the MEA-based and SPEI-based CCS processes was estimated at 6.5 and 4.3 GJ/tonne CO2, respectively.
The novel SPEI-based CCS process showed superior environmental performance compared to the conventional MEA-based CCS process. The midpoint analysis showed that the global warming potential of the SPEI-based CCS process was almost 7% lower than the conventional MEA-based CCS process. Similarly, the endpoint single score was conducted which showed that the SPEI-based CCS process had a lower impact on human health, ecosystems, and resources (7%, 8%, and 26% lower, respectively) compared to the MEA-based CCS process. However, in the case of reference case cement plant stand alone, the score of resource indicator was lowest due to increased demand of heat and electricity for carbon capture and liquefaction operations in case of CCS integration.
Original language | English |
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Pages | 1 |
Number of pages | 20 |
Publication status | Accepted/In press - 21 Jun 2023 |
Event | The 12th Trondheim Conference on CO2 Capture, Transport and Storage, June 19 - 21, 2023 - NTNU Campus, Høgskoleringen 5, Trondheim, Trondheim, Norway Duration: 19 Jun 2023 → 21 Jun 2023 https://www.sintef.no/projectweb/tccs-12/ |
Conference
Conference | The 12th Trondheim Conference on CO2 Capture, Transport and Storage, June 19 - 21, 2023 |
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Abbreviated title | TCCS 12 |
Country/Territory | Norway |
City | Trondheim |
Period | 19/06/23 → 21/06/23 |
Internet address |