Tianjin Jinfan Mould Co., Ltd.
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GOLDENSAIL
31
2022
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05
How vicarb heat exchangers prevent corrosion
Autor:
How to choose suitable anti-corrosion measures can achieve the purpose of using equipment efficiently. In view of the relevant situation of corrosion, the following anti-corrosion methods are proposed:
Use corrosion inhibitors to prevent corrosion. When combined with a cathodic inhibitor, a satisfactory and economical anti-corrosion effect can be achieved.
Chromate-zinc-polyphosphate: The use of polyphosphate is because it has the effect of cleaning the metal surface and has the ability to inhibit corrosion. Polyphosphate can be partially converted into orthophosphate, which meets calcium to form a colloid The cations have the effect of suppressing the formation of impurities in the vicarb heat exchanger.
Chromate-Zinc-Phosphonate: This method is similar to the previous method except that sodium phosphonate is used instead of polyphosphate, the scale that is about to form is effectively inhibited by carbamate phosphate, even at pH 9 It can also control the precipitation of calcium salts.
Chromate-zinc-hydrolyzed polyacrylamide: Due to the dispersing action of the hydrolyzed polyacrylamide of the cationic copolymer, the scale in the vicarb heat exchanger is prevented from turning into fouling.
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