Thermal deaerator in the boiler
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Hello everyone. If high-temperature steam is introduced into a thermal deaerator, thereby heating the unsaturated water inside the deaerator until it reaches the saturation temperature at the specified pressure, the vapor pressure above the liquid surface increases, and other gases dissolved in the water are released. So, what determines the operating pressure of the deaerator? Who is responsible for generating this pressure? Is it steam generated by the boiling of water in the deaerator? Is it still produced by the high-temperature steam introduced into the deaerator? I’m really asking everyone for help; I just don’t understand it~~
It is mainly caused by the boiling of water in the deaerator.
The operating pressure of thermal deaeration is atmospheric pressure, as the thermal deaerator is connected to the atmosphere. The outlet temperature of thermal deaeration is 104°.
The heat source is mainly external steam. Pressure is regulated. Atmospheric thermal deaerators are commonly used in industrial boilers (operating pressure of 0.02 MPa, operating temperature of 104°C). Atmospheric thermal deaerators generally use a water seal device as a safety relief mechanism.
To reach 104 degrees, the pressure will definitely be 0.02 MPa; the saturated temperature corresponds to the saturated pressure
How is this pressure regulated?
Haichuan searched for “the temperature of the deaerator won’t rise,” and understood the definition through practice. To be honest, the more you ask me like this, the more confused I get. The absolute pressure of saturated water at a certain temperature is constant.