Carbon dioxide capture apparatus and power generation system using cold heat of liquefied natural gas

摘要

The present invention provides a carbon dioxide capture device and a power generation system capable of regasifying liquefied natural gas into natural gas while capturing carbon dioxide contained in the flue gas of the power generation facility using cold heat of the liquefied natural gas. The carbon dioxide capture device using the cold heat of the liquefied natural gas according to an embodiment of the present invention is a heat exchange between the refrigerant and the liquefied natural gas and the first heat exchanger for cooling the refrigerant to a first temperature, the first heat exchanger A bypass line for bypassing a part of the refrigerant discharged from the second heat exchanger, wherein a part of the refrigerant discharged from the first heat exchanger is exchanged with the liquefied natural gas, and the second heat exchanger cools the refrigerant to a second temperature; And a collection cooler configured to separate carbon dioxide contained in the flue gas by heat-exchanging the flue gas with the refrigerant discharged from the second heat exchanger.