Carbon dioxide capture rich liquid flash evaporation regeneration waste heat recovery system

The utility model provides a carbon dioxide capture rich liquor flash evaporation regeneration waste heat recovery system, which belongs to the technical field of carbon dioxide capture, and comprises an absorption tower, a regeneration tower, a lean and rich liquor heat exchanger and a flash evaporation tank, the absorption tower is communicated with the regeneration tower through the lean and rich liquor heat exchanger, and the tower top of the regeneration tower is provided with a first cooling heat exchanger; the flash tank is communicated between the rich and lean liquid heat exchanger and the first cooling heat exchanger; according to the flash evaporation regeneration waste heat recovery system for the carbon dioxide capture rich liquor, heat of barren liquor returned from the regeneration tower and heat of regeneration gas at the top of the regeneration tower are recovered in sequence by utilizing the low temperature of the rich liquor, and the rich liquor subjected to primary heat exchange is subject