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[Chemical Knowledge]：Difference between tower internals and packings

Read： 747 Time：18months ago Source：Transform the World with Simplicity

In the chemical, environmental protection, petroleum and other industries, often involves the concept of tower internals and packing. Although they are all important parts of tower equipment, there are some obvious differences in their functions and uses.

us to understand the definition of tower internals. Tower internals mainly refer to various components fixed in the tower body within the tower equipment. They are usually made of metal, ceramic or other corrosion resistant materials, and have high strength and durability. Common tower internals include tower plates, tower bottoms, distributors, import and export pipes, etc. The main function of the tower internals is to separate and transfer materials, adjust the flow direction and flow rate of the fluid, and ensure the normal operation of the tower equipment.

packing is used to increase the boundary area of the material in the tower equipment, mainly used for gas and liquid contact and mass transfer process. The filler may be a particulate material of various shapes and materials, such as torus, sphere, wave, etc. Common materials include metals, plastics, ceramics, etc. The role of packing in the tower equipment is to increase the gas-liquid contact area, promote the mass transfer and reaction process of the material, and improve the efficiency of the tower equipment.

from the function and use point of view, the tower internals are mainly used for tower equipment support and fixed, they play a fixed separation layer, guide the fluid, adjust the role of fluid flow state. The filler is mainly used to increase the boundary area, promote the contact between gas and liquid, and improve the efficiency of mass transfer. It can be said that the tower internals are the skeleton of the tower equipment, and the packing is the "heart" of the tower equipment ".

In addition, there are some differences between tower internals and packings in material selection, use conditions and performance requirements. As a load-bearing structure, tower internals need to have high strength and corrosion resistance, and common materials include stainless steel, carbon steel and ceramics. When selecting the filler, it is necessary to consider the density, specific surface area, wettability and other factors of the material, as well as the shape and arrangement of the filler, in order to achieve the best mass transfer effect.

To sum up, there are obvious differences in the function and use of tower internals and packings. The tower internals are mainly used to support and fix the tower equipment, while the packing is used to increase the boundary area and promote the gas-liquid contact and mass transfer process. There are also some differences in material selection, use conditions and performance requirements. Understanding the difference between tower internals and packings is of great significance for the correct selection and use of tower equipment.

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