Industrial circulating cooling liquid

Abstract

The invention discloses industrial circulating cooling liquid, which is prepared from the following components in parts by weight: 15 to 30 parts of ethylene glycol, 1 to 5 parts of oligomeric polyethylene glycol, 0.001 to 0.01 part of benzimidazole quaternary ammonium salt surfactant, 0.1 to 3 parts of water-soluble polycarboxylic acid, and the balance of water and a regulating amount of pH (Potential of Hydrogen) regulator, the molecular weight of the oligomeric polyethylene glycol is 200-500, and the pH regulator is used for regulating the pH value of the industrial circulating cooling liquid to 7-9. The industrial circulating cooling liquid has better weather resistance, is environment-friendly and can inhibit bacteria for a long time.

Description

technical field [0001] The invention relates to the technical field of cooling water, in particular to an industrial circulating cooling liquid. Background technique [0002] my country is a country that consumes a lot of industrial water, and industrial cooling water accounts for a large proportion of industrial water. Industrial cooling water systems can basically be divided into direct-flow water systems and circulating water systems. In the once-through water system, the cooling water is discharged directly after passing through the heat exchanger once without circulation. Due to the pollution of drainage to the environment and the large water consumption, it is not recommended to use a straight-through water system even in areas with abundant water. In the water of the circulating water system, the temperature of the water rises after passing through the heat exchanger, and the temperature of the water is lowered by the cooling tower or other cooling equipment, and th...

AI Technical Summary

Problems solved by technology

However, this type of cooling water is prone to the following problems during repeated work: 1) Inorganic salts and metal ions in the water are easy to precipitate and scale; 2) It is easy to cause corrosion or cavitation to metal heat exchangers or pipes ; 3) Dust in the environment is easy to enter the cooling water, and bacteria and microorganisms are easy to breed; 4) The use effect is greatly reduced at low temperatures, especially below freezing point

[0004] The current circulating cooling water usually contains corrosion inhibitors, surfactants, bactericides, scale inhibitors and other components, but there are the following problems: 1) The amount of bactericides and scale inhibitors is large, which poses a threat to the water body and ecology or health; 2) The cooling liquid is easily turbid and the service life is not long; 3) The cooling liquid is unstable near the freezing point, or the temperature of the plastic material that has just been extruded is too high, which will easily cause the cooling water to partially boil, and the weather resistance is not strong

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