What is the impact of not installing packing inside the absorption tower on the absorption efficiency?
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What is the impact of not installing packing inside the absorption tower on the absorption efficiency? Some people say that the upward resistance of the gas increases after adding filler.
With filler added, the resistance to the upward movement of gas will definitely increase; without filler, isn’t it just a spray tower?
Adding filler definitely increases resistance. The absorption efficiency decreases without a filler.
Is the filler used to increase the contact area between the two phases?
Adding fillers increases the contact area of the material, improving efficiency and reducing costs! ! ! ! ! ! ! ! ! ! !
For the absorption of certain chemical reactions, since it can be completed in an instant, it is possible to use a spraying method directly without the need for fillers.
Without a filler, the contact area is small, so absorption cannot be achieved
Designs for absorption towers that do not use packing are rare; relying solely on spraying generally does not ensure complete absorption
Adding a filler facilitates convective contact and reaction between the two media, thereby improving absorption efficiency. Fillers do cause a pressure drop, but this value is generally in the kPa range, which is lower than that in plate towers； If the operating pressure is high, the packing pressure drop can be ignored
Depending on the purpose of spraying, fillers may or may not be used. If the goal is mainly cooling, then fillers are not necessary; but if purification is the main objective, then fillers are required. As for absorption, fillers still need to be added.
When refilling a packed tower with packing, there is a parameter known as specific surface area; a low value of this area leads to poor absorption. Packing typically has an open-loop ring shape, which **increases the gas-liquid contact surface area by approximately 2 to 6 times, and it also helps to ensure that the gas and liquid flow evenly without any uneven distribution or channeling. Moreover, the pressure drop with the new type of packing is very low. I have a tower that is 45 meters high and 2 meters wide; using QH-3, the pressure drop is 2.2 kilograms.