Ship-Based CO2 Capture – Port Integration

Abstract

The maritime sector aims to reduce GHG emissions from international shipping by at least 50 % by 2050. Ship-Based Carbon Capture (SBCC) is proposed as a low-cost alternative to decarbonize the maritime sector, as compared to zero-emission fuels (ammonia, hydrogen). The objective of the ''EverLoNG'' project is to accelerate the implementation of the SBCC technology. Current publication discusses the integration of such a shipping concept with ports. Further it is also discussing the required infrastructure at the port to facilitate such a concept. The CO2 storage conditions onboard the ships directly impact the required storage volume of CO2 as density vary with storage pressure. Storing and offloading CO2 as a liquid are proven technology today and a pressure of 15 barg has been selected for CO2 storage and transport for similar volumes (1). Three ships (SSCV Sleipnir, Ever Ace and Artic Lady) with different travel routes and operational profile have been selected for investigation as case studies. A required onboard storage and port receival capacity are in the order of 1800-5000 m3 and 18 - 45 m3 liquid storage of CO2 and amine, respectively. Ports with receival facilities for CO2 and amine should be selected based upon several aspects as geographical location, shipping routes, vicinity of permanent CO2 storage and location close to industrial customers which may utilize CO2 in their operations as raw materials.The CO2 processing facility at the port should be able to receive/handle CO2 with various quality and quantities depending on the individual ship and processing the CO2 further to meet the specifications from the customer. This could be an industrial customer who would like to use CO2 as the raw material or different organization who is delivering CO2 for permanent storage. Regulatory bodies involvement in the logistics and handling of CO2 and amine at port are necessary for a future worldwide network of ports with CO2 and amine receival, processing and transporting capabilities.

Keywords: CCS, CCUS, SBCC, Carbon capture, CO2 capture, Onboard capture, Port integration