Device for providing cooling capacity for circulating water in circulating water heat exchanger

The utility model belongs to the technical field of chemical engineering, and particularly relates to a device for providing cooling capacity for circulating water in a circulating water heat exchanger, which comprises a circulating water cooling tower, the upper part of the circulating water cooling tower is connected with a circulating water inlet pipeline, and the lower part of the circulating water cooling tower is connected with a waste nitrogen inlet pipeline. Pall rings are scattered in the circulating water cooling tower, the bottom of the circulating water cooling tower is connected with a shower guide pipe and a circulating water outlet pipeline, the other end of the circulating water outlet pipeline is connected with an inlet of a first low-temperature water pump, and an outlet of the first low-temperature water pump is connected with a water pump outlet pipeline. The other end of the water pump outlet pipeline is connected with the heat exchanger; according to the circulating water cooling tower,