Coupling system for carbon dioxide capture and low-pressure condensate water

The utility model provides a carbon dioxide capture and low-pressure condensate coupling system, which belongs to the technical field of carbon dioxide capture, and comprises an absorption tower, a regeneration tower and a reboiler, the regeneration tower is communicated with rich liquor in the absorption tower through a pipeline, the regeneration tower is provided with a crude gas exhaust port, and the reboiler is communicated with the absorption tower through a pipeline. The rear end of a crude gas exhaust port of the regeneration tower is communicated with a first cooling heat exchanger; the first cooling heat exchanger is communicated with a condensed water pipeline of a low-pressure heater of a power plant; according to the carbon dioxide capture and low-pressure heater condensation water coupling system, the first cooling heat exchanger is communicated with the rear end of the crude gas exhaust port of the regeneration tower, and the first cooling heat exchanger is communicated with the low-pressure hea