The emergence of illegal pickling and removal of heat exchange copper tube wall scale
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Regarding the illegal pickling and removal of heat exchange copper tube wall scale in heat exchangers: Copper roller hydration: Soft water system: closed question: The roller temperature is 140-170 degrees Celsius, and the water temperature after heat exchange is 40 degrees Celsius. In the early stage, a large amount of scale can be removed by citric acid pickling, and the rollers are significantly cooled. In the later stage, the cooling ability after continuing to use citric acid pickling is not significantly improved compared to before cleaning, and a large amount of hard scale remains in the pipe wall. Due to the complexity and small size of the pipeline, blasting equipment cannot be used for construction. It is also impossible to obtain the components of internal scale. Please ask the experts to help analyze what the internal scale may be and how to deal with it so that the scale can be washed out and regeneration inhibited.
The conductivity is high, your softened water has not passed through the mixed bed or EDI, and the salt content of the soft water is high. Add a mixed bed or EDI processing