Lng exergy optimization for sbcc

A carbon capture and liquefaction system (1) comprising

• (a) a CO2 capture system (100) adapted to during use provide a CO2 rich gas stream (101);
• (b) a CO2 liquefaction section (200) adapted to during use liquify at least part of said CO2 rich gas stream (101) to provide a liquified CO2 stream (201);
• and
• (c) a liquefied natural gas (LNG) exergy recovery section (300) for recovering exergy from LNG, said LNG recovery section comprising:
• an LNG tank (2) adapted to during use contain LNG, said LNG tank comprising an LNG stream outlet (21) for an LNG stream (301);
• a pressurizer section (3) adapted to during use pressurize the LNG stream (301) to obtain an pressurized LNG stream (302), said pressurizer section comprising an LNG stream inlet (31) and a pressurized LNG stream outlet (32);
• a vaporizer section (4) adapted to during use vaporize the pressurized LNG stream (302) to obtain a pressurized natural gas (NG) stream (401), said vaporizer section comprising a pressurized LNG stream inlet (41) and a pressurized NG stream outlet (42);
• a turbine section (5) adapted to during use depressurize the pressurized NG stream (401) to obtain a depressurized NG stream (501), said turbine section comprising a pressurized NG stream inlet (51) and a depressurized NG stream outlet (52);
• wherein the LNG stream outlet (21) is in fluid connection to the LNG stream inlet (31), the pressurized LNG stream outlet (32) is in fluid connection to the pressurized LNG inlet (41), the pressurized NG outlet (42) is in fluid connection to the pressurized NG inlet (51);
• wherein said CO2 liquefaction section (200) is in thermal connection to the vaporizer section (4), such that during use heat can be transferred from the pressurized LNG stream (302) to the CO2 rich gas stream.