Recirculated cooling water phosphorus-free corrosion and scale inhibitor

Abstract

The invention relates to the field of circulating water processing, and concretely relates to a recirculated cooling water phosphorus-free corrosion and scale inhibitor. The recirculated cooling waterphosphorus-free corrosion and scale inhibitor comprises the following raw materials in parts by weight: 5 to 20 parts of a corrosion inhibitor, 2 to 15 parts of a scale inhibitor, 1 to 6 parts of a copper corrosion inhibitor, and 10 to 100 parts of water. The corrosion and scale inhibitor prepared by the invention can significantly reduce the corrosion rate of the metal, and has excellent corrosion inhibition rate and scale inhibition rate. Compared with a phosphorus-containing corrosion and scale inhibitor, the amount of a bactericide is reduced, the use cost of the bactericide is reduced, more importantly, the sewage does not contain phosphorus, the problem that excessive breeding of algae causes eutrophication of water bodies can be prevented, and the corrosion and scale inhibitor is beneficial to ecological balance.

Description

technical field [0001] The invention relates to the field of circulating water treatment, in particular to a phosphorus-free corrosion and scale inhibitor for circulating cooling water. Background technique [0002] With the rapid development of my country's economy and society, the contradiction between water supply and demand has become increasingly prominent, and the shortage of water resources has become an important factor restricting the sustainable development of society. Industrial enterprises are large users of urban water. Industrial production requires a large amount of water to cool products and heat exchange equipment. The consumption of cooling water accounts for 60% to 80% of the total industrial water consumption. Therefore, the recycling of industrial cooling water is economical for the industry. The most efficient and vital means of water. In order to reduce the amount of water replenishment in the cooling water system, the water is recycled and operated a...

AI Technical Summary

Problems solved by technology

If the concentration ratio is too high, too many ions in the circulating water are easy to corrode and scale, and continuous or regular sewage discharge is required. The phosphorus content in the discharged wastewater cannot meet the national discharge standards, and it is easy to cause eutrophication of the water body. Oxidative corrosion inhibitors are generally harmful to Harmful to humans and the environment

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