Shuangshi (Zhangjiagang) Fine Chemical Co., Ltd.

Cooling circulating water system of sulfuric acid device

The objects of technology improvement are the cooling circulating water systems of Phase I and II. The Phase I system is mainly used for heat exchange and cooling of the 1,000,000t sulfuric acid production device, 50MW generator condenser and chlor-alkali production device of Phase I and equipped with five 900kW cooling pumps, three in service under normal conditions. The Phase II system is mainly used for heat exchange and cooling of the 1,000,000t sulfuric acid production device, 50MW generator condenser and 3MW back pressure type generator assisted cooler, and equipped with four 900kW cooling pumps (three in service under normal conditions) and two 400kW cooling pumps (not operating). After system optimization and adjustment, six cooling pumps are changed into high-efficiency pumps. The operating mode of the Phase I system is kept unchanged before and after technology improvement. For the Phase II system, two pumps are put into operation after technology improvement. According to the acceptance results, 20,659,600KWH power can be saved annually by the Phase I and II system.