Process and method for transporting liquid hydrocarbon and CO2 for producing hydrogen with CO2 capture

A loading and unloading station for sequentially unloading CO2 from at least one storage tank in a vessel and for loading LPG into a storage tank of the same vessel comprising:

• an LPG production unit;
• an LPG storage unit, the storage unit being in fluid communication with the LPG production unit;
• a first connector for fluid connection to the LPG storage unit for loading the LPG into the storage tank of the vessel;
• a second connector for unloading CO2 into a CO2 storage unit;
• at least one of:
• (A) a first thermal linkage that is configured to:
• transfer coldness from the CO2 to facilitate liquefaction of the LPG through the first thermal linkage that is associated with the LPG production unit and the CO2 storage unit and (B) a second thermal linkage that is configured to maintain temperature of the LPG storage unit through the second thermal linkage;
• a CO2 compression unit that compresses the CO2 above a predetermined pressure;
• and
• a supercritical CO2 unit that receives CO2 from the compression unit, whereby a high pressure, cold CO2 stream is put in thermal linkage with at least one of the LPG production unit and the LPG storage unit.

A system for simultaneous loading and unloading of CO2 and a liquid hydrocarbon, the system comprising:

• a vessel comprising at least one storage tank configured to transfer the CO2 or the liquid hydrocarbon, and configured to load and unload at least one of the liquid hydrocarbon and CO2;
• a first station at which the liquid hydrocarbon is produced, wherein the first station comprises:
• a liquid hydrocarbon loading unit, a first conduit configured to selectively connect the liquid hydrocarbon loading unit, a CO2 unloading unit, a second conduit configured to selectively connect the CO2 unloading unit to the vessel, and at least one of:
• (a) a first thermal linkage configured to transfer coldness from the second conduit to the first conduit to facilitate liquefaction of the liquid hydrocarbon and (b) second thermal linkage between the first conduit and second conduit configured to cause condensation of the liquid hydrocarbon in the first conduit,
• a CO2 storage unit fluidly connected to the CO2 unloading unit and configured to receive CO2 from the CO2 unloading unit, and
• a CO2 compression unit fluidly connected to the CO2 storage unit and configured to receive CO2 from the CO2 unloading unit, wherein the CO2 compression unit is configured to compress CO2 above a predetermined pressure;
• a second station at which the CO2 is collected, wherein the second station comprises:
• a CO2 loading unit, a third conduit configured to selectively connect the CO2 loading unit to the vessel, a liquid hydrocarbon unloading unit, and a fourth conduit configured to selectively connect the liquid hydrocarbon unloading unit to the vessel,
• wherein, at the first station, the vessel is configured to simultaneously unload CO2 via the CO2 unloading unit and load the liquid hydrocarbon into the at least one storage tank, and at the second station, the vessel is configured to simultaneously unload the liquid hydrocarbon via the liquid hydrocarbon unloading unit and load the CO2 into the at least one storage tank.