Glass plate level gauge
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Both the double towers and the thermal fractionator in the hydrogenation unit are equipped with glass plate level gauges. It was observed that there was liquid flow in the two glass plates located near the liquid surface inside these gauges. Why is this? Are there any good ways to deal with this?
The bottom temperature of the hydrorefining stripping tower is around 220°C, and the liquid level interface on the glass plate is quite clear. The bottom temperature of the distillation tower is around 280°C; there are two glass plates, both in a flowing state, and no interface showing the liquid level can be seen. After cutting and cooling, the glass plates are full; when in use and at low temperatures, the liquid level can be seen in both plates, with an empty space in between, but over time they both return to a fluid state. It seems to be full; I’m going to try using a magnetic flap level gauge to see if I can detect the liquid level.