The CO2 capture system with a swing temperature moving bed
Autor
Kozak-Jagieła, Ewa
Rerak, Monika
Zima, Wiesław
Cebula, Artur
Grądziel, Sławomir
Mondino, Giorgia
Blom, Richard
Lord, Lars O.
Skjervold, Vidar T.
Opublikowane w
Acta mechanica et automatica
Numeracja
vol.18, no.1
Data wydania
2024
Język
angielski
DOI
10.2478/ama-2024-0012
Słowa kluczowe
heat and mass transfer, CO₂ capture, moving bed temperature swing adsorption, test stand
Abstrakt
The reduction in CO₂ emissions is now a very popular topic. According to the International Energy Agency, CO₂ emitted in 2021was 6% more than that emitted in 2020. Carbon capture and storage (CCS) is gaining popularity as a possible solution to climate change. Experts estimate that industry and power plants will be responsible for 19% of total CO₂ emissions by 2050. This paper presentsthe design of a semi-industrial-scale system for CO₂ capture based on the moving bed temperature swing adsorption technology. According to the results of laboratory tests conducted by the SINTEF industry, this technology demonstrates high capture efficiency(>85%). The CO₂ capture medium involved in adsorption is activated carbon passing through individual sections (cooling, heating,adsorption), where CO₂ is bonded and then released. The heat and mass transfer processes are realised on the developed stand.The heat exchangers use steam and water as the heating/cooling medium. The paper reviews the existing solutions and describesthe developed in-house design of heat exchangers that will ensure heat transfer conditions being a trade-off between economic andefficiency-related issues of the CO₂ capture process. The designed test stand will be installed in a Polish power plant and is expectedto meet the method energy intensity target, set at ≤ 2.7 MJ/kg CO₂, with a capture efficiency exceeding 85%. The aim of the workwas to develop and solve technical problems that would lead to the construction of a CO₂ capture station with parameters mentionedabove. This stand uses an innovative method where CO₂ is captured by contacting the fluid (gases) with solid particles. The heatexchange associated with the heating and cooling of the adsorbent had to be solved. For this purpose, heat exchangers were designedwith high thermal efficiency and to prevent the formation of mounds.
