The invention discloses an LNG cold energy
carbon dioxide hydrate generation and ocean storage
system and method, and belongs to the field of
carbon dioxide conveying and storage. The
system comprises an LNG gasification
system, a cold energy continuous supply system, a pre-cooling system, a pressurization system, a
hydrate generation system and a
hydrate pipeline conveying system. The LNG gasification system and the cold energy continuous supply system continuously transfer cold energy released by LNG gasification to CO2 and
seawater, the pre-cooling system and the pressurization system conduct pre-cooling and pressurization conveying of CO2 and
seawater, the hydrate generation system prepares hydrate through CO2 and
seawater, and the hydrate pipeline conveying system conveys the hydrate to a
seabed reservoir through a pipeline.
Liquid ammonia is used as a
refrigerant to store cold energy released by LNG gasification, and continuous supply of the cold energy is ensured; the hydrate is rapidly and continuously prepared through continuous cold supply, pre-cooling, double reaction kettles, continuous stirring, cold insulation and gas-
liquid circulation; hydrates and seawater are mixed and conveyed in proportion, and the hydrate
slurry pipeline conveying efficiency is improved.