Equipment newbie, I want to ask everyone for advice about the tower.
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Please ask all the experts to help me find out what this structure means? Why is there something upright on the left side of the fifth tray on top, and something connected below the fourth tray (is it a liquid receiving tray to prevent impact)? What is its specific structure?
The overflow weir allows the tray to have enough liquid layer, and is flanked by the downcomer.
Under No. 4, there is a 13 feed pipe on the left. I personally understand that the one that is in contact with liquid is to protect the feed pipe.
I know the overflow weir and downcomer are on the right, but what about the one on the left?
The overflow weir stands on the left side of the fifth tray to seal the downcomer and prevent the gas phase from escaping from the downcomer without passing through the mass transfer element on the tray, causing a gas phase short circuit and loss of tower efficiency. The component under the fourth plate and the first tray is called the liquid sealing tank. Its function is to seal the downcomer to prevent the gas phase from escaping from the downcomer without passing through the mass transfer element on the tray, causing a gas phase short circuit. But it is generally used as a liquid seal on the bottom tray.
The overflow weir stands on the left side of the fifth tray to seal the downcomer and prevent the gas phase from escaping from the downcomer without passing through the mass transfer element on the tray, causing a gas phase short circuit and loss of tower efficiency. The component under the fourth plate and the first tray is called the liquid sealing tank. Its function is to seal the downcomer to prevent the gas phase from escaping from the downcomer without passing through the mass transfer element on the tray, causing a gas phase short circuit. But it is generally used as a liquid seal on the bottom tray.
Thanks for answering the question. I understand the liquid seal tank under the fourth plate, but how does the overflow inner weir of the fifth plate seal the downcomer to prevent the gas phase from escaping from the downcomer without passing through the mass transfer element on the tray?
To put it simply, the resistance of the gas phase to overcome the liquid layer + dry plate on the plate is smaller than the resistance of the gas phase to overcome the liquid seal of the downflow system.
I don’t understand the function of the vertical board on the left side of the 5th floor. Now that there is a tower wall, what is the purpose of having a vertical board?