Design and Analysis of Novel CO2 Conditioning Process in Ship-Based CCS

In this work, CO2 conditioning processes for ship-based CCS sequestration are modelled using the software APSEN HYSYS V11. This study uses the captured CO2 gas from the 3D project as the feed. The feed stream contains water, H2S, and CO as contaminants. The purification processes for dehydration, de...

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Bibliographic Details
Published in:Energies (Basel) 2022-08, Vol.15 (16), p.5928
Main Authors: Gong, Wentao, Remiezowicz, Eryk, Fosbøl, Philip Loldrup, von Solms, Nicolas
Format: Article
Language:English
Subjects:
Activated carbon
Adsorption
Ammonia
Carbon dioxide
CCS hub Dunkirk
CO2 capture
CO2 conditioning
CO2 liquefaction
Conditioning
Contaminants
Corrosion
Dehydration
Design
DMXTM process
Hydrogen sulfide
Industrial plant emissions
Liquefaction
Optimization
Power consumption
Refrigerants
Ships
Steel production
Water purification
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Summary:In this work, CO2 conditioning processes for ship-based CCS sequestration are modelled using the software APSEN HYSYS V11. This study uses the captured CO2 gas from the 3D project as the feed. The feed stream contains water, H2S, 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 CO2 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 CO2 is precooled using the intermediate pressure ammonia streams and the cold from the CO stripper.
ISSN:1996-1073
1996-1073
DOI:10.3390/en15165928