1. Overview of cleaning agent for circulating cooling water system.
The circulating cooling water system is a commonly used cooling system in industrial production, and after a long period of operation, dirt such as sediments, microorganisms and corrosion products will form inside the cooling water system, which will affect the cooling effect and the normal operation of the system. In order to keep the cooling water system up and running, the system needs to be cleaned regularly. Circulating cooling water system cleaning agent is a chemical agent specially used to clean the circulating cooling water system, which can effectively remove the dirt inside the system, improve the cooling effect, and prolong the service life of the equipment.
2. Types of cleaning agents for circulating cooling water systems.
According to the different main ingredients, circulating cooling water system cleaners can be divided into three categories: acidic, alkaline and neutral. Acid cleaning agents mainly use acid as the main component, and remove hard scale and rust products through the reaction of acid and sediment; Alkaline cleaning agent uses alkali or alkaline salt as the main ingredient to remove dirt by precipitation reaction with calcium and magnesium ions in the sediment; Neutral cleaners are modified on the basis of acidic or alkaline cleaners to achieve cleaning results with a milder formulation to avoid corrosion to the equipment.
3. The mechanism of action of the cleaning agent of the circulating cooling water system.
1.Acid-base neutralization reaction.
The acid in the acidic cleaner neutralizes the alkaline dirt to form soluble salts, so as to achieve the purpose of removing the dirt. At the same time, acids can also react with metals to dissolve rust products on the surface of metals.
2.Precipitation reaction.
The alkali or alkaline salt in the alkaline cleaning agent reacts with the calcium and magnesium plasma in the sediment to form a loose and easy-to-fall sediment, which is discharged into the system through the sewage discharge.
3.Complexation reaction.
The complexing agent in some cleaning agents complexes with calcium ions in water to form a stable soluble complex, which prevents the precipitation of calcium salts and achieves the purpose of scale inhibition.
4.Redox reactions.
Fungicides kill microorganisms in circulating water through redox reactions, damage the cell walls and membranes of microorganisms, and lead to the death of microorganisms. At the same time, some oxidants can also oxidize and decompose organic matter into small molecules, improving the clarity and dissolved oxygen content of water.
Fourth, the application range of cleaning agent for circulating cooling water system.
Circulating cooling water system cleaning agent is widely used in circulating cooling water systems in petroleum, chemical, electric power, steel, metallurgy, papermaking, textile and other industries. According to different industries and different water conditions, choosing the right cleaning agent can effectively improve the cooling effect, prolong the service life of the equipment, and ensure the normal operation of the system.
5. Precautions for the use of cleaning agent for circulating cooling water system.
1.Choose the appropriate cleaning agent according to the actual situation, and do not mix different types of cleaning agents at will.
2.Before using the cleaning agent, the cooling water system should be drained to ensure that the impurities and dirt in the system are discharged as much as possible.
3.When using cleaning agents, the appropriate concentration should be prepared according to the requirements of the instructions, and the cleaning time and temperature should be controlled.