The degasser in a boiler refers to the power supply deaerator tank. This tank has 3 main functions in a boiler:
A deaerator is a device that removes O2 from boiler feed water (BFW) as oxygen is highly corrosive in steam circuits.
Thermodynamically, it is a device that generates one or more equilibrium steps by contacting a saturated solution of O2 and a pure vapor stream. The chemical equilibrium shifts O2 from the saturated liquid stream to the pure vapor stream to meet y (vap) = H * x (liq) (Henry or equivalent)
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