Influence of Impurities in Water and Scaling of Plate Heat Exchanger

Influence of Impurities in Water and Scaling of Plate Heat Exchanger


Dissolved in water impurities in the plate heat exchanger fouling is one of the reasons
Magnesium salt: the main components in the water are MgSO4, Mg (HCO3) 2, MgCl2.2, and so on. After the magnesium is dissolved in water, Mg (OH) 2 precipitates after heat decomposition to form sludge or scale.
Calcium salts: the main components in the water are CaSO4, Ca (HCO3) 2, and so on. Calcium salt is the main component of the heat exchanger fouling.
Sodium salt: mainly composed of NaCl, Na2SO4, NaHCO3 and so on. NaCl does not produce scale, but the presence of free oxygen in the water will accelerate the corrosion of the metal wall; Na2SO4 content is too high will lead to salt, affecting the safe operation; NaHCO3 in water under the action of temperature and pressure will decompose NaCO2.3, NaOH , CO2, so that metal grain damage.

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