How to determine tower liquid flooding
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1. How to determine liquid flooding in a tower? 2. How to handle it?
The initial sign of flooding is a decrease in the opening degree of the liquid control valve at the bottom of the tower, but this is not easy to detect. Then the most obvious sign is the continuous drop in the liquid level at the bottom of the tower. In severe cases, it can lead to liquid in the tower top; even more severe situations result in a significant drop in the tower top pressure, and the most extreme outcome is tower flooding. The solution is to reduce the operating load of the tower in a timely manner; adding an antifoaming agent to some towers can help resolve the issue, and if that doesn’t work, the only option is to suspend operations temporarily for cleaning.
I always thought that determining liquid flooding was based on the tower pressure drop
The initial sign of flooding is a decrease in the opening degree of the liquid control valve at the bottom of the tower, but this is not easy to detect. Then the most obvious sign is the continuous drop in the liquid level at the bottom of the tower. In severe cases, liquid will end up in the tower top; even more severe situations can lead to a significant drop in the pressure at the tower top. The most extreme outcome is tower flooding. The solution is to promptly reduce the operating load of the tower and lower its temperature.
The pressure difference and temperature difference can reveal the issue; the solution is to stop the steam supply, use a backup tower if available, and if none is available, reduce the steam flow and adjust the feed rate.