Device and process for continuously producing calcium carbonate and ammonium sulfate

The invention belongs to the technical field of carbon capture and recovery, and discloses a device and process for continuously producing calcium carbonate and ammonium sulfate, the device comprises a carbon absorption tower, a fixed bed continuous reaction module and an evaporative crystallization tower, the carbon absorption tower is used for absorbing carbon dioxide and conveying an ammonium carbonate solution to the fixed bed continuous reaction module; the evaporative crystallization tower is used for evaporative crystallization of an ammonium sulfate solution produced by the fixed bed continuous reaction module to obtain an ammonium sulfate product, the fixed bed continuous reaction module comprises at least two fixed bed reactors, and the fixed bed reactors input an ammonium carbonate solution and solid waste gypsum in turn for reaction to realize continuous operation. According to the invention, the fixed bed reactors run in turn, so that the reaction can realize continuous production; meanwhile, the