Cryogenic Carbon Capture System and Method with Integrated Liquid Natural Gas Vaporizer

The patent combines two separate processes - cryogenic CO2 capture and LNG vaporization - into a single integrated system. The CO2 capture system's cold stream is used to vaporize LNG, while the LNG vaporization process provides cooling for the CO2 separation. This merging eliminates the need for separate heating and cooling systems, reducing overall system complexity while maintaining high CO2 separation efficiency.

The integrated system performs multiple functions simultaneously: it separates CO2 from flue gas, vaporizes LNG, and provides both cooling and heating requirements through a single process flow. The cold stream from the CO2 capture process serves dual purposes by cooling the flue gas and vaporizing the LNG, making the system more versatile and less complex.

The patent converts the cold stream that would otherwise be a waste product of the CO2 capture process into a useful resource for vaporizing LNG. Instead of discarding the cold stream or using additional energy to heat the LNG, the system utilizes the temperature differential between the cold stream and the liquid LNG to achieve vaporization, thereby converting a potential disadvantage into a benefit and reducing energy costs.

The system is designed to be self-sufficient by using its own internal cold stream to vaporize the LNG without requiring external heating sources. The CO2 capture process itself provides the cooling necessary for its operation and simultaneously provides the cold stream needed for LNG vaporization, making the system self-service and reducing operational expenses.