DSME completed the verification process for carbon dioxide capture and storage technology onboard an in-service LNG carrier.
he system was installed on an LNG carrier to test the process of absorption, regeneration, and mineralization of carbon dioxide contained in the exhaust gases of the vessel.
The OCCS technology, verified by Daewoo Shipbuilding & Marine Engineering, absorbs some of the carbon dioxide in the exhaust gas generated during ship operation through an aqueous sodium hydroxide (NaOH) solution, which is an absorbent and converts it into a mineral, and the absorbent is regenerated and reused in the carbon dioxide absorption process.
The carbon dioxide captured in this process can be stored in the form of minerals and unloaded on land after entering the port, or discharged to the ocean according to the results of the marine environmental impact assessment currently being carried out.
The system consumes very little energy in comparison to other carbon dioxide capture technologies, and the amount of additional carbon dioxide generated by equipment operation is relatively small. Another benefit of the system is that it is relatively small, thus being well-suited for onboard operations.