Land pipelines Transport to the site

Heat transfer from the environment through the wall of the cargo tank will boil CO2 and raise the pressure in the tank. It is not dangerous to discharge the CO2 boil-off gas together with the exhaust gas from the ship's engines, but doing so does, of course, release CO2 to the air. The objective of zero CO2 emissions during the process of capture and storage can be achieved by using a refrigeration unit to capture and liquefy boil-off and exhaust CO2. Unloading

Liquid CO2 is unloaded at the destination site. The volume occupied by liquid CO2 in the cargo tanks is replaced with dry gaseous CO2, so that humid air does not contaminate the tanks. This CO2 could be recycled and reliquefied when the tank is refilled. Return to port in ballast, and dry-docking

The CO2 tanker will return to the port for the next voyage. When the CO2 tanker is in dock for repair or regular inspection, gas CO2 in cargo tank should be purged with air for safe working. For the first loading after docking, cargo tanks should be fully dried, purged and filled with CO2 gas.

Ships of similar construction with a combination of cooling and pressure are currently operated for carrying other industrial gases.

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