Design and Analysis of Novel CO 2 Conditioning Process in Ship-Based CCS

Wentao Gong, Eryk Remiezowicz, Philip Loldrup Fosbøl and Nicolas von Solms ()
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Wentao Gong: Department of Chemical and Biochemical Engineering, Center for Energy Resources Engineering, Technical University of Denmark, Søltofts Plads, Building 229, DK-2800 Lyngby, Denmark
Eryk Remiezowicz: Air Products, Kiełczowska 62A, 51-315 Wrocław, Poland
Philip Loldrup Fosbøl: Department of Chemical and Biochemical Engineering, Center for Energy Resources Engineering, Technical University of Denmark, Søltofts Plads, Building 229, DK-2800 Lyngby, Denmark
Nicolas von Solms: Department of Chemical and Biochemical Engineering, Center for Energy Resources Engineering, Technical University of Denmark, Søltofts Plads, Building 229, DK-2800 Lyngby, Denmark

Energies, 2022, vol. 15, issue 16, 1-18

Abstract: In this work, CO 2 conditioning processes for ship-based CCS sequestration are modelled using the software APSEN HYSYS V11. This study uses the captured CO 2 gas from the 3D project as the feed. The feed stream contains water, H 2 S, and CO as contaminants. The purification processes for dehydration, desulfurization, and CO removal are reviewed. Two liquefaction approaches, the open-cycle and the closed-cycle liquefaction, are modelled and compared for transport pressures 7 and 15 bar. It is found that the energy requirement of the open-cycle process is higher than that of the closed-cycle liquefaction process. For the closed-cycle design, two refrigerants, ammonia and propane, are considered. Results show that the energy requirement of the process using ammonia is lower than that of propane. When comparing the two transport pressures, it is found that liquefaction at 15 bar requires less energy than 7 bar. On top of that, both refrigerants are unsuited for the liquefaction of CO 2 at 7 bar, as their operating pressures are below 1 atm. Several optimization concepts are tested on the closed-cycle liquefaction design. The net power consumption of the closed-cycle liquefaction is reduced when CO 2 is precooled using the intermediate pressure ammonia streams and the cold from the CO stripper.

Keywords: CO 2 capture; DMXTM process; CO 2 conditioning; CO 2 liquefaction; CCS hub Dunkirk (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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