I hope everyone can help explain the phenomenon of tube leakage in the steam reboiler
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I hope everyone can help explain the phenomenon of leakage in the tubes of the steam reboiler: In the tube side of the steam reboiler located in the main tower, the fluid is the liquid flowing out of the main tower, with a pressure of 0.07 MPa and a temperature of 116 degrees. On the shell side, there is low-pressure saturated steam with a pressure of 0.25 MPa and a temperature of 134 degrees. When the liquid level in the main tower drops to a certain level, the liquid level at the bottom of the tower experiences frequent, zigzag-like fluctuations. Similarly, the pressure of the low-pressure steam on the shell side also fluctuates in a zigzag pattern. I think this phenomenon occurs when the liquid level drops to the point where the tubes start to leak. How can this fluctuation be explained? :Q
You can analyze the composition of the condensate to see if there is methanol in it; you’ll know the result right away
If there is a leak, water (steam) will enter the tower; by taking samples to analyze the moisture level inside the tower, it is possible to determine whether there is a leak
I can tell that the reboiler is leaking, but how can I explain the fluctuations in the bottom liquid level and the serrated fluctuations in steam pressure? I want to write a paper, but I don’t know how to explain it
The water pressure at the bottom of the tower is low, so it does not end up in the steam condensate~
Give it a boost~ I hope everyone can help explain it
How did you know there was an internal leak? What method did you use to determine it? :)
The serrated phenomenon is caused by the water-repelling effect of the desiccant. 1. After the liquid level drops, the heat transfer capacity of the reboiler decreases, and the trap no longer drains water continuously; instead, periodic sawtooth-like variations occur. You can connect a pressure gauge to the drain line in front of the trap to observe the pressure changes. 2. This phenomenon can also occur when the tubes in the reboiler become blocked, as it is primarily the decrease in heat transfer capacity that leads to such a situation.
The heat transfer amount is low; as the steam trap switches and the amount of steam added changes, the liquid level at the bottom of the tower also experiences periodic fluctuations!
If the liquid level is too high, flooding can occur; maintain the correct liquid level