ANALISIS KEBUTUHAN DAYA PADA TRANSPORTASI CO2 MENGGUNAKAN PIPA DENGAN METODE DIRECT COMPRESSION DAN STAGE COMPRESSION

• Main Author: Reindra Gamara Paseru, Arjuna
• Format: Final Project
• Language: Indonesia
• Subjects: Pertambangan dan operasi berkaitan
• Online Access: https://digilib.itb.ac.id/gdl/view/66137
• Institution: Institut Teknologi Bandung

Based on the Paris Agreement, countries in the ASEAN region are trying to fulfill net zero emission program in 2050. Singapore is one of the countries that encourage this program by capturing CO2 to be stored or used for other activities. The CO2 goes to Field X, Indonesia to be stored in the depleted gas reservoir. The CO2 transport process is carried out through pipeline with a distance of 914 km. In the transportation process, it is necessary to maintain the pressure so that CO2 is in the supercritical phase , it is necessary to design a CO2 transportation system using the compression method with compressor or pump. Thus, this study aims to design a compression 2 process for CO2 transport through pipes and analyze the power efficiency required for a CO2 transport system with direct compression and stage compression methods. In this study there are several methodologies carried out, starting with conducting a literature study of several references related to CO2 transportation to understand the basic theory related to this study and as a source of synthetic data used in this study. After that, the next step is to model the CO2 fluid to be used in the simulation of the CO2 transport system in this study. The next stage is to simulate the CO2 transportation system through the pipeline. After modeling, the calculation of the power required for the compression process from this study is carried out. This study was conducted under steady-state conditions, which fulfills the law of conservation of mass, namely the incoming mass flow rate is the same as the outgoing mass flow rate. In this study, 3 different cases were modeled and a power comparison analysis was carried out in each case. Each case has the same conditions, but with a different number of compression stages. In these 3 cases, CO2 is transported by pipeline from the inlet with a pressure of 61 bara to the outlet with a pressure of 80 bara. In these cases, compression process is carried out using a compressor or pump because the inlet pressure is smaller than the outlet pressure and to maintain the supercritical CO2 phase. The specifications of each compressor and pump use different speeds depending on the desired pressure changes. The results of this study indicate that each case requires different power, where the largest power required in this transportation process is when compression is carried out in one stage and the smallest power required for CO2 transportation when compression is carried out in three stages. In the case of direct compression it requires a power of 11.87 MW, the case of stage compression with 1 compressor and 1 pump requires a power of 5.71 MW, and in the case of stage compression with 1 compressor and 2 pumps it requires a power of 5.55 MW. Based on the studies conducted, it can be concluded that the more number of compression stages, the more efficient the power required.