Let’s talk about what causes water in medium-pressure steam.

1. The height of the steam space is too small； 2. Poor performance of soda-water separation device ； 3. There is no surface sewage discharge or the operation is not in place. :lol

As the boiler pressure increases, the higher the boiling point of the boiler water, the smaller the surface tension of the pot water, and the easier it is for the pot water to form small water droplets and be taken away when it evaporates. At the same time, as the pressure increases, the difference in gravity between steam and water decreases, making it difficult to separate steam and water, and steam easily carries water droplets. The higher the pressure, the heavier the steam, and the kinetic energy of the steam flow increases, making it easier to carry water. Therefore, when the steam flow rate is constant, the higher the pressure, the easier it is for the steam to carry water. Boiler steam contains water. The main factors affecting the water content of steam are boiler load, steam pressure, steam space height and pot water salt content. (1) As the steam pressure increases, the difference in gravity between steam and water decreases, making it difficult to separate steam and water. ； When the steam pressure decreases, the corresponding saturation temperature decreases, the bubbles in the steam drum increase, the water level increases, the amount of water carried by the steam increases, and the steam quality deteriorates. (2) The height of the steam space is small, making it difficult to separate steam and water. (3) When the salt content of the pot water increases, the amount of water carried by the steam increases. (4) When the boiler load increases, the steam volume and steam speed increase, so that the diameter and number of water droplets carried by the steam will increase, so the steam temperature will increase and the steam quality will deteriorate.

Reasons why steam carries water 1. The passing soda-water separator may be flushed. 2. If it is a new boiler, check whether the water levels on both sides of the drum are consistent. It is possible that the drum is not placed levelly. 3. The design of the drum does not match the steam load, resulting in poor steam-water separation. 4. The heating surface of the superheater is designed to be too large. * * desuperheater * * The amount is too large and the steam carries water.

Reasons why steam contains water 1. There is a problem with the steam-water separator of the steam drum. 2. The liquid level in the steam drum is high. 3. When the co-evaporation of soda and water occurs, the water level in the drum water level gauge vibrates violently, making it difficult to see the water level clearly. ； Superheated steam drops sharply, and water hammer occurs in severe cases ； Deterioration of steam and boiler water quality ； The water level alarm intermittently sends out high or low alarm signals. .

The people above are right. The separation effect of air bag steam and water is not good, the load changes sharply, and throttling may cause it. This is how I understand the water in the air. Please reply if you have different opinions.