Discussion on boiler issues
Thread Content
1. Generally, deaerated water is used for filling the temperature-reducing pressure regulator in the boiler, rather than demineralized water, to avoid oxygen-induced corrosion. But I heard that steam condensate can also be used, and I find this method quite interesting. 2. How is the steam condensate inside the device generally recycled? Including heat and water. 3. Temperature and pressure reduction: Since water is injected, could scaling occur in the pipelines after temperature and pressure reduction? If so, how should it be dealt with? Personally, I think that since water turns into vapor, scaling is inevitable.
1. Using steam condensate is easy to understand: condensate is obtained by condensing water that has been vaporized at high temperatures. This process is similar to desalination and deoxygenation, but it is more expensive and complex, making it uneconomical. If your factory has a sufficient amount of steam, then the amount of condensate water will also be high; therefore, it is sufficient. In general, factories have too little condensate water, so this solution is not adopted there. 2. I don’t know how other companies handle steam condensate; here, since the amount of condensate is relatively small, it is generally treated as wastewater. As for heat, there is hardly any way to make use of it, as its amount is too small; it cannot be used to prevent freezing in winter, and exchanging heat with the raw materials is purely impossible. 3. The water used in the temperature and pressure reducing device is deoxygenated water or demineralized water; after purification, its salt content is very low, and there are also few impurities such as solid particles and suspended matter. And scale is formed in this part, so generally there is no need to worry about scaling issues. Even if scaling occurs, it should be the result of long-term accumulation.
What industry does the person upstairs work in? I would like to ask how steam condensate can be treated so that it can be used as water for cooling and pressure reduction systems I heard that condensed water is not suitable to be used as boiler water
The operator of this small device relies solely on his own guesses; he says something only if he feels it will work, and it is up to the teachers to correct whether it is right or wrong.
Should condensate water not be used as boiler feedwater? Why is this? Is it because of contamination by steam or condensed water during use? If so, there is this problem; if not, why doesn’t it work? In systems for cooling with water jets, the electric field is usually applied to a wire that delivers the water. (This water is behind the deaerator; in other words, it’s the deoxygenated water here.)
The pH level decreases, while the levels of iron ions and SiO2 increase; the water quality does not meet the standards, and there is a risk of contamination. Generally, it needs to be sent to a raw water tank or treated using a mixed-bed system before it can be reused
The iron ion level will be high. There is also concern that if the heat exchanger leaks, it is not allowed for steam condensate to contain oil (the specific consequences are not clear). It was explained very well downstairs