Because the cooling water mostly contains calcium, aluminum ions and acid carbonates. When cooling water flows through the stainless steel to passivate, there is conversion of carbonate. In addition, the oxygen dissolved in the cooling water can cause metal corrosion and rust. Due to rust, the actual effectiveness of heat transfer in closed cooling towers is reduced. When it is more serious, it is unavoidable to spray cooling water outside the casing, and when the scale is more serious, the water pipe is blocked, so that the actual effect of heat transfer is ineffective. Scientific research data show that the damage of dirt alluvium to heat transmission is very harmful, and the rise of the alluvium will lead to an increase in electricity and energy costs. Even a thin layer of dirt will increase the operating cost of about 40% of the dirt in the machinery and equipment. Maintaining water-cooled safe passages that can contain mineral alluvial materials can rise well, save resources, increase the life of machinery and equipment, and save production time and costs.

Traditional cleaning methods such as mechanical equipment methods (scraping, brushing), pressurized water, and pickling passivation have encountered many problems when cleaning machinery and equipment: it is not possible to completely remove alluvial deposits such as scale, acid liquid, etc. Equipment and equipment lead to erosion resulting in system loopholes. Residual acid causes re-etching or sub-scale erosion of materials, and then dismantles machinery and equipment. In addition, cleaning up wastewater is harmful, and wastewater treatment must be carried out.

In response to the above-mentioned situation, countries around the world have been diligently developing cleaners that are less corrosive to metal materials, and blessed with the success of product development at this stage. It has the characteristics of high efficiency, environmental protection, reliability, and corrosion resistance. It not only has excellent cleaning results, but also has no erosion to the equipment, which can ensure the long-term application of the closed cooling tower.