Single-tower double-circulation waste heat recovery and desulfurization cooperative treatment system

The invention provides a single-tower double-circulation waste heat recovery and desulfurization collaborative treatment system which comprises a flue gas inlet (1), a desulfurization slurry internal circulation pump (2), a slurry water tank (3), a flue gas condensation water tank (4), a desulfurization spraying layer (7), a waste heat recovery spraying layer (11), a desulfurization slurry heat exchanger (19), a slurry circulation pump (20), a heat pump (23) and the like. The desulfurization tower with a single desulfurization function is improved, the partition waste heat recovery function is achieved on the premise that the desulfurization effect is not affected, heat in flue gas is recovered through desulfurization slurry and waste heat water, the waste heat recovery amount is increased, the investment of the whole system is reduced, and the economical efficiency of energy-saving transformation is improved; the waste heat recovery part is cooled in a spraying mode, flue gas is cleaned at the same time, the