Composition for scale and corrosion inhibitor, scale and corrosion inhibitor, and application of scale and corrosion inhibitor

Abstract

The invention discloses a composition for a scale and corrosion inhibitor, the scale and corrosion inhibitor, and application of the scale and corrosion inhibitor. The composition comprises a scale inhibitor, a dispersing agent, a nonionic surfactant, boric acid (and / or water-soluble borate), divalent metal ions, and azole materials (optional), and the weight ratio of the scale inhibitor, the dispersing agent, the nonionic surfactant, the boric acid (and / or the water-soluble borate), the divalent metal ions and the azole materials (optional) is 1 to (0.2-3) to (0.05-1) to (0.025-0.5) to (0.0125-0.5) to (0-0.8). The environment-friendly scale and corrosion inhibitor provided by the invention has a high tolerance to calcium and alkalis, as well as a wide water quality application range, so as to provide technical conditions for the running of circulating water with a high cycle of concentration and the reduction of sewage discharge; when applied to a circulating water system, the scale and corrosion inhibitor provided by the invention has the advantages of excellent scale and corrosion inhibition performance, low consumption, simplicity and obvious effects of the scale inhibition treatment and easiness in popularization and application.

Description

technical field [0001] The present invention relates to a composition for scale and corrosion inhibitors, scale and corrosion inhibitors and applications thereof, in particular to a composition for scale and corrosion inhibitors and an inhibitor containing the composition for scale and corrosion inhibitors. Scale and corrosion inhibitors and their applications. Background technique [0002] Water is the basic condition for human survival, but water resources in the world are limited. my country's per capita water volume is only a quarter of the world's per capita water volume, and water resources are even poorer. With the rapid development of industry, the ecological balance of water has been seriously damaged day by day. In order to solve the water resource crisis and adapt to sustainable development, it is necessary to save water reasonably. The amount of cooling water in industrial water accounts for 60-80% by weight of the total water consumption. Therefore, the main ...

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Problems solved by technology

[0005] CN1754840A discloses a corrosion and scale inhibitor for industrial cooling water systems, comprising acrylic acid-acrylate-sulfonate copolymer, mercaptobenzothiazole, sodium humate, lignin and water, but sodium humate and lignin The source of the element is miscellaneous, the quality is unstable, and the treatment effect is poor; CN1609020A discloses a method for treating corrosion and scale inhibition water containing polyepoxysuccinic acid, which is to use polyepoxysuccinic acid or polyepoxysuccinic acid and glucose acid or gluconate and zinc salt (Zn 2+ ) used in conjunction with the corrosion and scale inhibition method, but polyepoxy succinic acid basically has no dispersion function and corrosion inhibition function, and it is easy to cause the deposition of zinc salts, resulting in low corrosion inhibition performance; CN101591073A discloses a phosphorus-free corrosion and scale inhibitor , the non-phosphorus corrosion and scale inhibitor contains lignin and tannin mixture 12-16%, water 55-65%, NaOH 0.7-0.8%, H 2 SO 4 1.7-2.2%, triethanolamine 12-16%, maleic anhydride 4-6%, borax 3-5%; CN101591074A discloses a phosphorus-free water treatment with excellent corrosion and scale inhibition performance and effective control of microorganisms and slime hazards In the phosphorus-free water treatment agent, the phosphorus-free corrosion and scale inhibitor is 15-25%, the ternary is (AMPS) 8-12%, the zinc chloride is 6-10%, polyma 6-10%, room Warm water 40-65%

[0006] In addition, because the scale and corrosion inhibition products disclosed above have high use concentration, large amount of compounding, difficult compounding, difficult detection and operation, narrow adaptability to water quality and poor scale and corrosion inhibition effect, it is difficult to popularize and use them.

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