有色设备

This paper introduces the design and practice of energy saving reconstruction of the recirculating cooling system for a 1.6 million t/a acid-making production line. Through data analysis and field research, main causes of the higher temperature water in heat exchangers have been found, and the main points of system energy waste have been located. On this base, the thermal performance enhances after packing replacement, and the need for flow rate and head lift of pumps decreases due to the local pressurization method. Finally, the electricity saving and water saving have achieved 3.4 million kWh and 0.5 million tons per year, respectively.