Multi Region Carbon Capture and Storage Network in Indonesia Using Pinch Design Method

Global warming, a rise in global temperatures average, is caused mainly by carbon dioxide (CO₂). Carbon capture and storage (CCS) technology is one of the best solution to mitigate CO₂. This technology is a series of activities starting from capturing CO₂ (source), transporting it, and storing it to the suitable geological sink (sink). In the CCS process, matching between source and sink may face some obstacles, such as time availability, capacity limit, and location. These problems can be solved by pinch design method. The development of multi region CCS process was conducted in this study, with of South Sumatra and East Java as boundary area with a total of five sources and six sinks. The development was done by calculating capturable CO₂ and cost needed using simultaneous and sequential method with time difference (Δt_min) 0, 5, and 10 years. The result of this research shows sequential method of CCS can capture the biggest amount of CO₂ with 93.86% in Δt_min 0 years, while simultaneous method can capture 83.94% of CO₂ in Δt_min 0 years. The least total annual cost is found in simultaneous method with Δt_min 4.6 years, which is US$ 159,259,000, compared to sequential method with Δt_min 4.5 years, which is US$ 166,667,000. Sequential method is best used if the CCS design prefers quantity of capturable CO₂ over the cost needed.