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 problems of low dosage, difficulty in having good corrosion inhibition, scale inhibition and sterilization performance at the same time, and achieve optimal mitigation Eclipse effect
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[0047] Example 1-4
[0048] Add chemicals to the test water as shown in Table 3 and perform scale inhibition, corrosion inhibition and sterilization performance tests. The specific test methods are as follows. *Mg / L described in Table 3 represents the effective (dry basis) content, and the tin salt is calculated as tin ion.
[0049] Evaluation of scale inhibition performance
[0050] Add the reagent to the test water, evaporate and concentrate in a constant temperature water bath at 80±1℃, to a concentration of 5 times, sample and analyze the remaining Ca in the water 2+ At the same time, make a blank sample and calculate the scale inhibition rate. The calculation formula of scale inhibition rate is: scale inhibition rate=(C-C 0 ) / (nC 1 -C 0 )×100%, where,
[0051] C: remaining Ca in the water 2+ Concentration (mg / L)
[0052] C 0 : Blank Ca 2+ Concentration (mg / L)
[0053] C 1 :Ca in raw water 2+ Concentration (mg / L)
[0054] n: concentration factor
[0055] Evaluation of corrosion inhib...
Example Embodiment
[0072] Example 5
[0073] 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 HG / T2160-91 of the People's Republic of China, and the control parameters are as follows.
[0074] Water quality: test raw water 1, see Table 1.
[0075] Concentration factor: A tower 4.0±0.2 B tower 4.0±0.2
[0076] pH: Tower A control 8.0±0.2 Tower B control 8.0±0.2
[0077] Velocity: 1.0m / s
[0078] Pharmacy:
[0079] Tower A: Weigh 4g of PBTCA with an effective content of 50% by weight, 8g of HEDP with an effective content of 50% by weight, 2g of sodium gluconate, 26.7g of copolymer 1 with a solid content of 30% by weight, and dissolve it in 57.8g of water. Add 1.5 g of tin tetrachloride pentahydrate to fully dissolve it and shake it up to obtain 100 g of the required medicine. When the prepared agent is added to water at a concentration of 100 mg / L, the effective concentrations of PBTCA, H...
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