Pressure control of the deaeration tank
Thread Content
I have a gentle question: how is the pressure in the deaeration tank controlled? It’s not through deaeration steam, is it?
Our deaeration tank is equipped with a vent control valve that can regulate the pressure
The control valves are usually manual valves; our deaeration tank is quite large, and there is a control valve at its top. The pressure in the deaeration tank is related to its temperature
We usually adjust it using steam control. However, there are also many factors that affect the pressure in the deaeration tank.
When the oxygen content in the deoxygenated water is within the acceptable range, the pressure can be adjusted appropriately using steam; otherwise, a vent valve is used to adjust the pressure.
Normal adjustment is done using steam, and generally the temperature corresponds to the pressure.
As long as the temperature of the water storage tank meets the requirements, it will not affect the deoxygenation effect
This is how we see it: first of all, steam should come out of the vent, but not in large quantities； Monitor the deaerator temperature; if it reaches 102°C, that’s ideal. At this point, check the deaerator pressure, and control it based on this value going forward ； The pressure in our deaerator isn’t very accurate; I control it by monitoring the amount of steam coming from the vent. Generally, after making adjustments, the opening degree of the control valve doesn’t change much