Clean flue gas brine purification system

The utility model relates to the technical field of environmental protection equipment, in particular to a clean flue gas brine purification system which comprises a boiler, denitration equipment, dust removal equipment, desulfurization equipment, a driving device and a brine purification workshop, the output end of the denitration equipment is communicated with the input end of the dust removal equipment, the output end of the dust removal equipment is communicated with the interior of the desulfurization equipment, the input end of the driving device is communicated with the output end of the desulfurization equipment, and the output end of the driving device is communicated with a brine purification workshop. A part of desulfurized gas is conveyed to the brine purification workshop by the driving device, harmful components in the flue gas are taken out, the content of carbon dioxide required by brine purification is not obviously reduced, the flue gas cleaning effect is good, thermal power plants are mostl