System for residual heat from flue gas

The utility model discloses a system for residual heat from flue gas, include: the spray column, it includes: the spray column body is injectd in the spray column body to spray the space, sprays in the space top -down and is provided with the district of packing and distinguishes with the water storage, the water -locator, its space that sprays that is arranged in the district top of packing, the defroster, its space that sprays that is arranged in the water -locator top, the flue gas entry, its lateral wall that is located the spray column body of district below that packs, the shower water entry, its lateral wall that is located the spray column body of district top that packs, and the spray column entry links to each other with the water -locator, the exhanst gas outlet, its top that is located the spray column body, the shower water export, its lateral wall that is located the spray column body in water storage district, circulating water pump, it links to each other with the shower water export, absorption heat pump, it links to each other with circulating water pump and shower water entry respectively. Latent heat and the sensible heat of this system in can the effective recycling flue gas to effectively avoid the corruption of flue gas to exhaust pass.