Regarding water in gas steam boilers
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I would like to ask the experts the following question: The steam production capacity of this 25-ton low-pressure steam boiler is 11 tons per hour. After adding pH regulators to the boiler water, severe water contamination in the steam occurs; the pH level of the boiler water is around 9. Can this phenomenon indicate that the boiler water contains organic substances?
The water level is too high or there is too much suspended matter; analyze the water quality and discharge the water
Steam carrying water is usually caused by excessively high water temperature
Why bring water? Just lower the water level
The water level is kept at 60%, and wastewater is discharged on a daily basis. The water quality is tested only for pH, conductivity, and hardness; these all present problems. The issue is that every time a pH regulator is added to the water, the boiler starts to operate with excessive water in it
Do you mean the temperature of the water supplied to the boiler is high?
The water level is around 60%, with low control
It is recommended to standardize the water supply management system; otherwise, problems are likely to arise. (There have been painful lessons learned.) Both the feed water and boiler water are controlled in accordance with regulations. Medium-pressure boilers are in accordance with GBT12145-2008 Quality of Water and Steam for Thermal Power Generating Units and Steam Power Equipment ； Low-pressure boilers shall comply with GBT 1576-2008 Industrial Boiler Water Quality. (It’s available on the forum; it can be searched and downloaded.) Excluding the issue of excessive liquid level, the severe water contamination in the steam during chemical addition is likely due to high levels of free NaOH and other salts in the boiler water; excessive foam in the boiler water affects the quality of the steam. It is recommended to reduce the flow rate during chemical dosing and to extend the dosing time appropriately. Equipment aspect: Ensure accurate liquid level display ； When production is halted and there is a chance, inspect and clean the demister inside the boiler drum.
If the deoxygenation in the boiler is insufficient, this problem will not occur when using a Rongbaochang boiler deoxygenator