Composition for corrosion and scale inhibition and sterilization and application thereof
A technology of corrosion inhibition, scale inhibition and composition, which is applied in the field of corrosion inhibition, scale inhibition and sterilization composition, which can solve the problem of low dosage and achieve the best corrosion inhibition effect
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[0049] Examples 1-4
[0050] Add chemicals to the test water as shown in Table 3 and conduct scale inhibition, corrosion inhibition and bactericidal performance tests. The specific test methods are as follows. *mg / L recorded in Table 3 represents the effective (dry basis) content, and the tin salts are calculated as tin ions.
[0051] Scale inhibition performance evaluation
[0052] Add chemicals to the test water, evaporate and concentrate in a constant temperature water bath at 80±1°C to a concentration of 5 times, and take samples to analyze the remaining Ca in the water. 2+ At the same time, make a blank sample, and calculate the scale inhibition rate. The formula for calculating the scale inhibition rate is: scale inhibition rate = (C-C 0 ) / (nC 1 -C 0 ) × 100%, where,
[0053] C: Ca remaining in water 2+ Concentration (mg / L)
[0054] C 0 : blank sample Ca 2+ Concentration (mg / L)
[0055] C 1 : Ca in raw water 2+ Concentration (mg / L)
[0056] n: concentration...
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[0073] Example 5
[0074] In order to simulate the scene, a dynamic simulation test was carried out. The dynamic simulation test method is carried out according to the chemical industry standard of the People's Republic of China HG / T2160-91, and the control parameters are as follows.
[0075] Water quality: test raw water 1, see Table 1.
[0076] Concentration ratio: Tower A 4.0±0.2 Tower B 4.0±0.2
[0077] pH: A tower control 8.0±0.2 B tower control 8.0±0.2
[0078] Velocity: 1.0m / s
[0079] Pharmacy:
[0080] Tower A: Weigh 5 g of polyaspartic acid with a solid content of 40 wt %, 15 g of polyepoxysuccinic acid with a solid content of 40 wt %, 3 g of benzotriazole, and 26.7 g of a copolymer with a solid content of 30 wt % Compound 1, dissolved in 48.8 g of water, and finally added 1.5 g of tin tetrachloride pentahydrate to fully dissolve it, shake it up, and obtain 100 g of the desired preparation.
[0081] When the prepared agent is added to the water at a concentrati...
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