Condensed water and make-up water first enter the water chamber of the membrane cyclone group at the head of the deaerator, and are obliquely sprayed from the small holes of the membrane tube to the inner hole under a certain water level difference to form a jet. Because the inner hole is full of rising heating steam, water sucks a lot of heating steam in the jet movement (the experiment proves that the jet movement has entrainment effect);

In a short time and a short journey, strong mixing and heating effects are generated, and the water temperature is greatly increased, while the rotating water continues to rotate downward along the inner hole wall of the membrane tube, forming a tumbling water membrane skirt (the critical Reynolds number of water in the rotating flow is greatly reduced, resulting in turbulent tumbling). At this time, turbulent water has the best heat and mass transfer effect, and the water temperature reaches saturation temperature. Oxygen is separated, because oxygen can't diffuse freely in the inner hole, and only the rising steam can be discharged into the atmosphere from the exhaust pipe (although the old deaerator heats the water, oxygen is separated, but its specific gravity is greater than that of the heated steam, and some oxygen is brought into the water tank by the downstream water, which is also a reason for the poor oxygen removal effect).

The feed water subjected to coarse deoxygenation in the film-forming section and the hydrophobic water introduced from the drainage pipe are mixed here for secondary distribution, so that the uniform rain falls on the liquid vapor network installed below it, and then flows into the water tank after deep deoxygenation. The oxygen content of the water in the water tank is 0-7 ц/L at high pressure and less than15 ц/L at low pressure, which meets the operating standards issued by the Ministry.