Composite scale and corrosion inhibitor and application thereof in water circulating cooling system
A technology of scale and corrosion inhibitors and circulating cooling water, which is applied in the field of anti-corrosion and scaling, can solve the problems of large sewage discharge, large consumption of chemicals and supplementary water, and pH value lower than 8.5 in the circulating cooling water system, and achieve good anti-corrosion Corrosion and scale inhibition effect, wide application range, good coordination effect
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[0037] The present invention has no special limitation on the preparation method of the composite scale and corrosion inhibitor, and the composite scale and corrosion inhibitor can be obtained after uniformly mixing the components described in the above technical solution. In the present invention, it is preferred to mix the components described in the above technical solution in a reactor, and stir evenly to obtain a composite scale and corrosion inhibitor. The present invention has no special limitation on the method of stirring, and the technical solution of stirring well-known to those skilled in the art can be adopted, such as manual stirring, or mechanical stirring, which can make the above-mentioned components mix uniformly.
[0038] The composite scale and corrosion inhibitor provided by the present invention is suitable for use under the conditions of high hardness, pH range of 7.0-9.5 or natural balance of pH value, and has excellent corrosion inhibition effect on equ...
Embodiment 1
[0046] 10kg (10.0wt%) cycloalkylimidazoline, 17kg (17wt%) hydroxyethylidene diphosphonic acid, 15kg (15wt%) β-cyclodextrin, 53.8kg (53.8wt%) water, 3kg (3wt%) ) hydrochloric acid and 1.2kg (1.2wt%) benzotriazole were stirred evenly in a reaction kettle to prepare a composite scale and corrosion inhibitor.
[0047] The present invention adds the compound antiscaling and corrosion inhibitor that this embodiment makes in circulating cooling water, keeps the concentration of compound antiscaling and corrosion inhibitor in circulating water as 10mg / L, detects the performance of this compound antiscaling and corrosion inhibitor, the result is as follows As shown in Table 1, Table 1 is the test results obtained in Example 1 of the present invention.
[0048] Table 1 Embodiment 1 of the present invention obtains detection result
[0049]
[0050]
[0051] As can be seen from Table 1, the scale and corrosion inhibitors prepared in Example 1 are used in circulating cooling water,...
Embodiment 2
[0053] 13kg (13wt%) 1-(2-hydroxyethyl)-1-benzyl-2-tridecyl imidazoline, 20kg (20wt%) amino trimethylene phosphonic acid (ATMP), 10kg (10wt%) β -Cyclodextrin, 1.5kg (1.5wt%) 8-hydroxy-quinoline, 4kg (4wt%) N-methylpyrrolidone and 51.5kg (51.5wt%) water were stirred evenly in a reactor to prepare a composite resistor Scale corrosion inhibitor.
[0054] Add the composite scale and corrosion inhibitor prepared in this example to the circulating cooling water of the simulated nuclear power plant, and keep the concentration of the composite scale and corrosion inhibitor in the circulating water at 50 mg / L. The performance of the composite scale and corrosion inhibitor was tested, and the results are shown in Table 2. Table 2 shows the test results obtained in Example 2 of the present invention.
[0055] Table 2 The detection results obtained in Example 2 of the present invention.
[0056]
[0057] It can be seen from Table 2 that the scale and corrosion inhibitor prepared in th...
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Abstract
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