Two methods for closed cooling tower cleaning -- Huatal Closed Cooling Tower

During the daily operation of the closed cooling otwer, add neutral cleaning agent to the sparied water and circulating cooling water system for cyclic cleaning for about 30 days, release the cleaning fluid, and then add maintenance agent to complete the cleaning process. The cleaning period of this method is long, but it can be carried out during the operation condition of closed cooling tower unit without affecting the production lines or daily cooling requirements.

Characteristics of neutral cleaning agent:

1. Neutral cleaning non-corrosive: after the product is added into the water systems of closed cooling tower, it does not change the pH of the water and has no corrosive damage to the metal. It completely solves the corrosion hidden danger of the strong acid cleaning agent widely used on the metal and realizes non-corrosive cleaning.
   

2. High cleaning efficiency: it is effective for all kinds of scale, especially for insoluble scale such as sulfate and algae biological mud. The scale removal rate can reach more than 95%, and the original performance of the equipment can be restored to keep the equipment clean and running.

3. Simple operation: when the central air conditioning is normally started, add neutral cleaning agent to the water system, run for about 30 days, and then discharge the cleaning agent to completely remove all kinds of scale in the water system.

According to the latest theory of coordination field chemistry, d orbitals of metal ions can split into different energy orbitals under the action of electrostatic field of some ligand compounds. When the ligand gives the lone pair to form O bond with the central metal element, if there are empty R molecular orbitals or empty P and D molecular orbitals in the ligand molecule, and the symmetry is appropriate, then the lone pair in the central element D orbital can form feedback π bond with the ligand, thus forming stable coordination compounds.

Based on the above principles, compounds with π molecular orbitals that can split Ca2+ and Mg2 + D orbital levels were selected as R receptor ligands. When this compound reacts with calcium and magnesium scale, it forms stable coordination compounds with Ca2 + and Mg2+ D, thus destroying the molecular structure of calcium and magnesium scale. The calcium and magnesium scale is dissolved in water and removed by sewage discharge.

Maintenance:

After cleaning, the cooling water and chilled water systems should be maintained with chemicals. Adding corrosion and scale inhibitor in the chilled water system can form a stable complex with iron, copper, zinc and other metal ions to prevent the corrosion of oxygen and metal ions in the water. Through chelation, inhibition, and lattice distortion. It prevents the scaling salts in the water from forming scale. Thus play the role of corrosion and scale inhibition. Add fungicides and algicide to cooling water. Because the cooling water system is open, fungi and algae can be produced during the recycling process. Fungicides and algicide can inhibit the production and survival of fungi and algae, and thus play a role in regulating water quality.