Dixon ring packing
Dixon packing, also known as theta ring packing, is a kind of laboratory packing, mainly used for mass transfer and heat transfer processes between gases and liquids.
Materials of Dixon packing: Stainless steel 304, 316, 316L, Hastelloy C-276, Monel 400, Duplex stainless steel 2205/2507, etc.
These materials not only have good mechanical strength but also have good corrosion resistance and can adapt to various complex chemical environments.
Features of Dixon packing are its structural design and material selection, which enable it to exhibit excellent performance in a variety of chemical engineering and laboratory applications.
Application: Dixon packing is mainly used in laboratories and separation processes of small batches and high purity products.
Dixon packing is usually made of wire mesh or orifice plates, the diameter of which is equal to the height, forming a regular ring structure.
This design enables the packing to be evenly distributed within the tower, providing a larger surface area for full contact between gas and liquid.
Please get in touch with us at info@honglimetalmesh.com if you have any requirements for Dixon ring packing.
Special specifications can also be customized.
How the Dixon ring packing works
The working principle of Dixon packing is mainly based on its special structural characteristics and the capillary action of the material.
When the gas and liquid pass through the packing layer, the capillary action of the wire mesh allows the liquid to be well dispersed into a film and cover the surface of the packing.
This film-like distribution is conducive to full contact between the gas and the liquid, thereby improving the efficiency of mass transfer and heat transfer.
In addition, the high porosity of Dixon packing can reduce flow resistance, reduce the residence time of the fluid in the packing, and further reduce energy consumption.
The theoretical plate number of the theta ring packing increases with the increase of gas velocity and decreases with the decrease of the surface wettability of the packing.
Dixon ring packing specifications
Dixon packing has a wide range of applications in laboratories and industrial fields.
Material: Stainless steel 304, 316, 316L, Hastelloy C-276, Monel 400, Duplex stainless steel 2205/2507, etc.
- θ ring packing, also known as Dixon packing, is a small particle high-efficiency packing made of metal wire mesh, with the diameter and height of the packing being equal.
- θ ring packing is mainly used in the separation process of laboratories and small batches of high-purity products. The pressure drop of θ ring packing is related to the gas velocity, liquid spray volume, system gravity, surface tension, viscosity, and packing characteristics, and is also related to the pre-liquid flooding treatment of the packing.
- The retention amount of θ ring packing is larger than that of similar solid packing, and the surface wetting of θ ring is more complete than that of general ceramic rings, with a high film formation rate, so the efficiency is also higher.
- The theoretical plate number of θ ring packing increases with the increase of gas velocity and decreases with the decrease of the surface wetting rate of the packing.
Date of Dixon packing specifications
Packing specifications | Mesh count | For packing tower diameter(mm) | Number of plates (Pieces/meter) | Packing density(g/liter) | Surface area(m2 / m3) | Porosity(%) | Pressure drop(mbar/m) |
---|---|---|---|---|---|---|---|
Φ2×2 | 100 | Φ10~Φ20 | 60~65 | 576 | 3700 | 91 | 30 |
Φ3×3 | 80 | Φ25~Φ40 | 50~55 | 460 | 2800 | 93 | 15 |
Φ4×4 | 60 | Φ40~Φ70 | 30~32 | 550 | 1700 | 95 | 10 |
Φ5×5 | 60 | Φ50~Φ70 | 15~20 | 440 | 1100 | 95 | 10 |
Φ6×6 | 60 | Φ60~Φ80 | 12~15 | 365 | 950 | 95 | 10 |
Φ8×8 | 60 | Φ70~Φ90 | 10~12 | 284 | 750 | 95 | 8 |
Φ10×10 | 60 | Φ100~Φ120 | 7~8 | 211 | 550 | 95 | 8 |
Dixon ring packing application
Dixon packing has a wide range of applications in laboratories and industrial fields.
Taking the distillation process in chemical engineering laboratories as an example, Dixon packing is often used in distillation towers to improve the purity and yield of products.
During the distillation process, the mixture undergoes multiple partial vaporization and condensation in the tower to achieve a good separation between the components.
As an important component in the tower, the performance of Dixon packing directly affects the distillation effect.
Specifically, when the mixture enters the distillation tower, the heated liquid vaporizes at the bottom of the tower, and when the steam rises to the top of the tower, it meets the reflux liquid in the Dixon packing layer.
In the packing layer, the steam and the liquid conduct sufficient mass transfer and heat transfer to achieve a good separation of the components.
The good performance of Dixon packing makes this process more efficient and stable, thereby improving the purity and yield of the product.
During the distillation process, Dixon packing mainly plays the following roles:
- Increasing the mass transfer area: The annular structure of Dixon packing provides a larger surface area for the contact between gas and liquid, thereby improving the mass transfer efficiency.
- Optimize fluid distribution: The uniform distribution of the packing layer makes the flow of the fluid in the tower more stable, reducing the occurrence of channeling and short circuiting.
- Reduce flow resistance: The porosity of Dixon packing is high, which can reduce the flow resistance of the fluid in the packing and reduce energy consumption.
- Improve separation efficiency: Through the above effects, Dixon packing significantly improves the separation efficiency of the distillation process, so that the purity and yield of the product are improved.