Tianjin Botai Heat Exchange Equipment Co.,Ltd
Tianjin Plate Heat Exchanger - Cleaning Methods for Fully Welded Plate Heat Exchangers
2020-07-21
Food-grade plate heat exchangers_ Fully welded plate heat exchangers play an increasingly important role in industrial and civil markets. However, due to the narrow gaps and small flow cross-sectional area of fully welded plate heat exchangers, when high-temperature water or media containing fibers and particles pass through, it is easy to scale or block, which reduces the heat exchange efficiency of the fully welded plate heat exchangers and affects the safe and normal operation of the heat exchangers. Therefore, how to quickly and effectively clean fully welded plate heat exchangers will become an important issue to ensure safe production and stable operation.
Fully welded plate heat exchangerIt plays an increasingly important role in industrial and civil markets. However,Fully welded plate heat exchangerdue to the narrow gaps and small flow cross-sectional area, high-temperature water or media containing fibers and particles can easily scale or clog, resulting inFully welded plate heat exchangera decrease in heat exchange efficiency, affecting the safe and normal operation of the heat exchanger. Therefore, how to quickly and effectively cleanFully welded plate heat exchangerwill become an important issue to ensure safe production and stable operation.
RemoveFully welded plate heat exchangerThe basic principles of removing scale:
1) Dissolution: Acid solutions easily react with calcium and magnesium carbonate scale to form soluble compounds, causing the scale to dissolve.
2) Peeling: Acid solutions can dissolve the oxides on the metal surface, breaking the bond with the scale, thus peeling off the scale attached toFully welded plate heat exchangerthe surface of the metal oxides, causing it to fall off.
3) Gas lifting: After the acid solution reacts with calcium, magnesium, and carbonate scale, a large amount of carbon dioxide is produced. The carbon dioxide gas, during the overflow process, has a certain lifting force on theFully welded plate heat exchangerdifficult-to-dissolve or slowly dissolving scale layers, causing the scale to fall off from the heated surface of the heat exchanger.4) Loosening: For
mixed silicate and sulfate scale, as calcium, magnesium, carbonate, and iron oxides dissolve in the acid solution, the remaining scale becomes loose and can easily be washed away by the flowing acid solution.Fully welded plate heat exchangerdifficult-to-dissolve or slowly dissolving scale layers, causing the scale to fall off from the heated surface of the heat exchanger.含有硅酸盐和硫酸盐混合水垢，由于钙、镁、碳酸盐和铁的氧化物在酸溶液中溶解，残留的水垢会变得疏松，很容易被流动的酸溶液冲刷下来。
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