Abstract

In this study, the basic configuration and operation concept of a CO"sub"2"/sub" terminal were identified by conducting a system engineering process. The performance goal of a CO"sub"2"/sub" 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 CO"sub"2"/sub" terminal was acquired. The CO"sub"2"/sub" terminal in this study consisted of three parts. First, the CO"sub"2"/sub" loading/unloading part is responsible for liquid CO"sub"2"/sub" unloading from the carrier and loading vapor CO"sub"2"/sub" onto the carrier. Secondly, the liquid CO"sub"2"/sub" transmission part extracts liquid CO"sub"2"/sub" 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 CO"sub"2"/sub", and charges the storage tanks with vapor CO"sub"2"/sub" to control the pressure of the storage tanks that discharge liquid CO"sub"2"/sub". Finally, the study results were compared with a liquefied natural gas (LNG) terminal. The biggest difference between the CO"sub"2"/sub" terminal in this study and the LNG terminal is that a vaporizer is essential in the CO"sub"2"/sub" terminal due to the smaller storage capacity of the CO"sub"2"/sub" terminal and, therefore, the lower amount of boil-off gas. Document type: Article