Steam superheater with water present
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What effects will the presence of water in the steam superheater have? For example, if the liquid level in the steam generator is high, the steam may contain water, or the saturated steam may cool down before reaching the steam superheater, resulting in condensation before it enters the steam superheater
——““There’s water in the steam superheater”? I think it shouldn’t happen under normal circumstances! The so-called “steam superheater” is a device that heats saturated steam further to turn it into “superheated steam”; therefore, such a situation must result from improper operation!
The main reason for water entrainment in the steam superheater is: 1. Excessively high water level in the saturated steam generator, which carries water into the superheater. 2. During the startup of the steam system, the superheater is not activated in a timely manner, resulting in saturated steam cooling inside the superheater. 3. Poor water quality leads to foaming, which occurs when there is too much salt in the water; steam then carries water into the superheater. The solution is to strictly follow the operating procedures, and that’s it
What I want to ask is what impacts would occur if such an accident happened? Like steam piping networks? The impact of the superheater, etc
During the startup of the boiler, when the load is low, water may accumulate in the U-tubes at the bottom of certain serpentine tube bundles in the vertical convective superheater for various reasons, forming a water seal, commonly known as a water plug. This results in steam stagnation within the serpentine tube bundle, causing the tube wall temperature to exceed the allowable heat tolerance of its metal material, and thus leading to tube rupture.