Phosphorus-containing scale inhibitor for industrial circulating water and preparation method and application thereof

Abstract

The invention discloses a phosphorus-containing scale inhibitor for industrial circulating water. The phosphorus-containing scale inhibitor comprises the following raw materials in parts by weight: 13-18 parts of zinc salt, 40-50 parts of an AA-AMPS copolymer, 13-17 parts of 2-phosphonobutane-1,2,4-tricarboxylic acid, 4.2-5.8 parts of 1-hydroxyethylidene-1, 1-diphosphonic acid, 1.75-1.95 parts ofmethylbenzotriazole and 16-20 parts of hydrochloric acid. The AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamino-2-methyl propanesulfonic acid. According to the phosphorus-containing scale inhibitor for the industrial circulating water, disclosed by the invention, by finely selecting the raw materials and optimizing the content of each raw material, the prepared phosphorus-containing scale inhibitor for the industrial circulating water has a very excellent scale inhibition effect on the industrial circulating water, so that the scale inhibition time can be greatly saved, the utilization rate and the circulating efficiency of the circulating water are greatly improved, the dosage of the scale inhibitor can be reduced, and the scale inhibition cost of industrial circulating water can be saved.

Description

technical field [0001] The invention relates to the field of scale inhibitors, in particular to a phosphorus-containing scale inhibitor for industrial circulating water and a preparation method and application thereof. Background technique [0002] Industrial circulating water is mainly used in cooling water systems, so it is also called circulating cooling water. Because industrial cooling water accounts for more than 90% of the total water consumption. Domestic circulating water is mainly used in water heaters. [0003] There are two types of circulating cooling water: closed type (closed type) and open type. In the closed cooling water system, the cooling water is not exposed to the air, the water loss is very small, and the contents of various minerals and ions in the water generally do not change. In the open circulating water system, the recooling of water is carried out through the cooling tower, so the cooling water must be in contact with the air during the recir...

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Problems solved by technology

[0006] 1. The anti-scaling effect on industrial circulating water is not ideal, and it is usually necessary to increase the dosage, which will lead to high costs and pollute the environment (the phosphorus content in sewage exceeds the standard);

[0007] 2. For scale inhibition of industrial circulating water, the demand for scale inhibitors for industrial circulating water is high, and the scale inhibition effect is high, otherwise it will not only lead to high costs, pollute the environment (the phosphorus content in sewage exceeds the standard), and may Equipment failure due to fouling, and even accidents

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