Why is pre-coating necessary for the circulating water pipeline? What points should be noted?

Its functions should include corrosion prevention and sterilization. In the circulating water systems used in chemical manufacturing, due to a variety of factors such as rising water temperature, changes in water flow velocity, water evaporation, concentration of various inorganic ions and organic substances in the water, exposure of cooling towers and cooling ponds to sunlight outdoors, exposure to wind and rain, intrusion of dust and sediment, as well as the design and material composition of the equipment, sediment accumulation occurs to a greater extent than in closed-loop cooling water systems ； Furthermore, once corrosion or scaling occurs in the heat exchanger, especially local corrosion, it can cause the heat exchanger to leak rapidly and become unusable, resulting in significant losses for production. Therefore, it is essential to regularly treat the water and clean and prime the equipment and pipelines.