The invention relates to an amine /
ammonia evaporation and absorption integrated device and an application method thereof. The device comprises an amine /
ammonia distillation tower and an amine /
ammonia absorption
tower which are connected in series, and the amine / ammonia
distillation tower is provided with a feeding port used for introducing an amine / ammonia-containing solution, a
gas phase outlet, a first material outlet used for discharging materials obtained after amine / ammonia
distillation and a circulating gas inlet; the amine / ammonia absorption tower is provided with a gas-phase inlet for introducing gas-phase amine /
ammonia gas, an amine / ammonia absorption solution inlet for introducing an amine / ammonia absorption solution, a second material outlet for discharging an absorption material and a circulating gas outlet, the gas-phase outlet is communicated with the gas-phase inlet, and the circulating gas inlet is communicated with the circulating gas outlet; and a plurality of
layers of tower plates are arranged in the amine / ammonia distillation tower and the amine / ammonia absorption tower, a pressure plate is arranged above each layer of tower plate, and a downcomer is arranged on each layer of tower plate. The device is applied to amine / ammonia cyclic utilization and amine / ammonia-containing
wastewater treatment in the production process, and the purposes of low
energy consumption of amine / ammonia distillation, high operation efficiency, safety, simplicity and convenience in operation, low operation cost and the like are achieved.