Energy-saving desulfurization solvent regeneration system and process

The invention discloses an energy-saving desulfurization solvent regeneration system which comprises a regeneration tower, a heat pump device, a lithium bromide temperature raising device, a reflux extraction device, a heat exchanger, a desulfurization tower and a recovery tower, a solvent regeneration system is arranged in the regeneration tower, the regeneration tower adopts bottom-blowing jacking to blow gas from the bottom of the tower to realize circulation, a rotational flow device is arranged in the regeneration tower, a heat pump working medium is arranged in an internal circulation of a heat pump heat device pump, and the heat pump device can extract latent heat of steam at the top of the regeneration tower; after the temperature and pressure of the heat pump working medium are increased, the heat pump working medium can provide heat for evaporation and concentration of a lithium bromide solution and evaporation and gasification of condensed water in the lithium bromide temperature increasing system,