Chemical dosing in medium-pressure drum
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Adding substances such as sodium phosphate to important steam drums can affect which parameters of these drums?
ph. Sodium ions. Phosphate. Silicon dioxide.
A high level of silica in the drum indicates that it’s time to carry out regular blowdown. Otherwise, the medium-pressure steam produced by the drum will be of substandard quality.
The most obvious ones are phosphate and pH
Actually, the most obvious one is sodium ions, because the sodium ion level in the demineralized water fed into the device is within the acceptable range. If more chemicals are added and waste water is not discharged in a timely manner, it’s easy for the sodium ion level to exceed the limit.
It mainly affects phosphate (5-15mg/L) and sodium ions (≤15μg/kg). The pH value is mainly controlled by ammonia water
Is this sodium ion an indicator in the steam?
The parameters of steam are determined by sodium phosphate
The PH also increases when sodium phosphate is added; we conducted comparisons, but the increase was not very significant