In the plate tower, this is achieved by a very small hole left in the middle of the liquid receiving tray
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The last edit to this post was made by flute6 on 2012-5-28 at 22:39. As the title suggests, there is a very small hole in the middle of the liquid receiving tray in our plate tower; its diameter is approximately 2 centimeters. What is the purpose of this hole? And why aren’t the lengths of the downcomers the same? Sometimes they are long and sometimes short – why?
This is likely used for draining liquid when parking; under normal operating conditions, there should be no leakage.
Agree with the explanation from the second floor. I am the highest, highest, highest, highest, highest, highest, highest, highest, highest, highest, highest, highest, highest, highest – just to reach the word count.
The second question is not clearly phrased. Is it the same tower or a different one? Be sure to ask the question clearly. Generally speaking, for the same system, the downcomer of a larger tower is naturally longer than that of a smaller tower.
I’ve learned a lot, gained plenty of inspiration, and my thinking has become more open. Thank you
It’s the same tower; the downcomer suddenly becomes longer above the 16th tray, reaching the same height as the tray where there is an access hatch. What is the special meaning of this?
This is called the “lacrimal pore”. Used to empty the downcomer when parking.
The design height of the downcomer is primarily determined by the need for bubble separation; in systems prone to foaming, where bubbles are difficult to separate, it is necessary to lengthen the downcomer in order to increase the residence time
The tray spacing generally determines the height of the downcomer; those with manholes or extraction hoppers usually have a larger spacing. And the area of the downcomer varies depending on the liquid residence time.