Mandu Engineering shares the principle of descaling tube bundles in plate heat exchangers

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1) Dissolution: Acidic solutions readily react with calcium, magnesium, and carbonate scales to form soluble compounds, thereby dissolving the scales. 2) Stripping effect: Acidic solutions can dissolve the oxides on the metal surface, breaking the bonds with scale. Thereby removing the scale attached to the surface of the metal oxide. and fall off. 3) Gas evolution effect: When the acid solution reacts with calcium, magnesium, and carbonate scale, a large amount of carbon dioxide is produced. Carbon dioxide gas during the leakage process. It has a certain lifting force on hard-to-dissolve or slowly dissolving scale layers, causing the scale to fall off the heated surfaces of the heat exchanger. 4) Loosening effect: For scale composed of a mixture of silicates and sulfates, as the oxides of calcium, magnesium, carbonates, and iron dissolve in acidic solutions, the remaining scale becomes loose and can be easily washed away by the flowing acidic solution.