In carbon steel steam pipelines, are there iron ions in the condensate?
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In carbon steel steam pipelines, are there iron ions in the condensate?
Is it that the iron ions in carbon steel get corroded and enter the water? So, how much is it usually? Are there any empirical values for this?
Theoretically, it is possible; it depends on your requirements for water. Iron ions can also be detected in industrially pure water, although their concentration is extremely low. At least using condensate water as boiler feedwater is no problem.
It is planned to be reused as a processing ingredient, with strict requirements regarding the iron ion content
There has to be some requirement, right? The high-purity water used for ion-exchange membrane caustic soda has an Fe content on the order of ppb ； The boiler feed water is approximately less than 0.3 ppm. The condensate water is estimated to be similar to the boiler feedwater as well.
If it is steam coming from the boiler, then the theoretical content must not exceed the requirements for boiler water quality. 0.3mg/L
Yes, what I mean is: if the conveying pipes are made of carbon steel, will this lead to an increase in such substances? Will new iron ions end up inside?
There will definitely be an increase, so phosphates used as scale inhibitors are generally added continuously to maintain the concentration of phosphate ions and ensure that the level of iron ions remains within the specified limits.