Conceptualization of CO"sub"2"/sub" Terminal for Offshore CCS Using System Engineering Process

Abstract

In this study, the basic configuration and operation concept of a CO₂ terminal were identified by conducting a system engineering process. The performance goal of a CO₂ terminal was determined by requirement analysis. Then, functions and timelines were derived by functional analysis to meet the performance goal. Equipment to perform the functions were defined and finally, a process flow block diagram of the CO₂ terminal was acquired. The CO₂ terminal in this study consisted of three parts. First, the CO₂ loading/unloading part is responsible for liquid CO₂ unloading from the carrier and loading vapor CO₂ onto the carrier. Secondly, the liquid CO₂ transmission part extracts liquid CO₂ from the storage tanks and increases the pressure until it satisfies the offshore pipeline transportation condition. The vapor-treatment part collects boil-off gas, generates vapor CO₂, and charges the storage tanks with vapor CO₂ to control the pressure of the storage tanks that discharge liquid CO₂. Finally, the study results were compared with a liquefied natural gas (LNG) terminal. The biggest difference between the CO₂ terminal in this study and the LNG terminal is that a vaporizer is essential in the CO₂ terminal due to the smaller storage capacity of the CO₂ terminal and, therefore, the lower amount of boil-off gas.

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• http://dx.doi.org/10.3390/en12224350 under the license https://creativecommons.org/licenses/by

• https://www.mdpi.com/1996-1073/12/22/4350/pdf under the license http://creativecommons.org/licenses/by/3.0/

• https://www.mdpi.com/1996-1073/12/22/4350,

https://doaj.org/toc/1996-1073 under the license cc-by

• https://www.mdpi.com/1996-1073/12/22/4350,

https://www.mdpi.com/1996-1073/12/22/4350/pdf,

https://academic.microsoft.com/#/detail/2982997276

• https://www.mdpi.com/1996-1073/12/22/4350/pdf,

http://dx.doi.org/10.3390/en12224350

under the license https://creativecommons.org/licenses/by/4.0/