Water present at the outlet of the air-cooled tower
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Before the New Year, it was found that there was a small amount of water accumulated in the lead drain valve before the molecular sieve; after draining about 100 ml, the issue was resolved. Personnel were assigned to monitor the situation, and the valve was slightly opened. No water was detected after monitoring for a day. To find out where the water came from, a meeting was held and further instructions were given, stating that it was necessary to check whether there was water in the drain valve during pressurization. A small amount of water was observed flowing out at the end of the pressurization process, and it disappeared once pressurization was complete ； Observing another set of air separation and pressurization shows normal operation. Now, water appears in the air separation unit every time it is pressurized. I’m not sure if this is normal or if it could lead to further problems. If you have time, please give me some advice.
It is recommended that, when there is sufficient adsorption time, the pressure increase time be appropriately extended, and the valve opening speed of V1207 be adjusted, in order to prevent water from appearing at the outlet of the air-cooled tower due to too high flow rates during pressure equalization~~
I’ll go back and study the opening degree and duration of the pressure-boosting valve. I suspect the water catcher at the top of the air-cooling tower is a bit clogged, causing locally high flow speeds
Add a gas-water separator behind the air-cooling tower, and that’s it
There is a check valve; it stops working after some time, so now a bypass is used for drainage
The outlet of the air-cooled tower is equipped with a wire mesh mist catcher~~
Draining the steam trap is a preventive measure to ensure that no liquid water exits the air-cooling tower from the source.
Air-cooled towers are equipped with wire mesh demisters; what really matters is the effectiveness. Without a gas-water separator, one has to deal with the risk associated with water entering the molecular sieve; with a gas-water separator, there is the issue of increased energy consumption. It depends on what one chooses
With a proper design, there should be no issues with the mist catcher; if there are problems with the design or operation, it’s advisable to check the mist catcher. As a last resort, one can add an additional gas-liquid separator~~
Last year, during a major maintenance session for the air separation unit, it was found that certain parts of the mist catchers were blocked by dirt; they could only be cleaned properly using a high-pressure water gun. I suspect this one is dirty too; if there’s a chance to stop, it should be thoroughly inspected. Adding a separator would require a lot of space, and the on-site conditions don’t allow it:o
Theoretically, there is no problem; this is also what distinguishes craftsmanship from engineering. Theoretically, a control valve installed in the material pipeline is sufficient for the process, but in practice, considerations must be given to the reliability of the valves and to maintenance issues; therefore, bypasses and dual valves are often used to facilitate maintenance in case of abnormalities. . . . . . . It seems that in the design of air-cooled towers these days, some space is left at the top, serving a function similar to that of a miniature gas-water separator