Industrial Packing Extraction Columns Or Towers

Wuxi Hongdinghua Chemical Equipment Co.,Ltd is a professional leader China Industrial Packing Extraction Columns Or Towers manufacturer with high quality and reasonable price.  Wuxi Hongdinghua Chemical Equipment Co., Ltd. is a professional manufacturer of chemical equipment HDH is capable to design and manufacture different kinds of chemical equipment. HDH has years of experience in designing and manufacturing various extraction towers. Including various forms of non-standard customized extraction towers such as sieve plate extraction towers, packing extraction towers, and rotary extraction towers.

Features and Application of Packing Extraction Tower

The packing extraction tower is an extraction tower of liquid-liquid extraction mode, which utilizes the different properties of solute distribution between two immiscible (or partially immiscible) liquid phases to achieve the separation or purification of liquid mixture. It has the advantages of high selectivity, good separation effect, and easy to achieve continuous large-scale production. The packing extraction tower has not only been widely used in petroleum refining, chemical industry, hydrometallurgy, atomic energy, and pharmaceutical industry, but also plays an increasingly important role in fields such as bioengineering, new materials, and environmental protection.

Details of Industrial Packing Extraction Columns Or Towers

The packing extraction tower can select appropriate extractants and processes based on the separation object and separation requirements, thus having great adaptability. The operation of a packing extraction tower is usually carried out at normal atmospheric temperature or lower temperatures, with low energy consumption and is particularly suitable for the separation of heat sensitive substances.

The packing extraction tower is one of the most widely used extraction equipment. It not only has the advantages of simple structure, easy manufacturing and installation, but also greatly improves the processing capacity and mass transfer efficiency of the packing extraction tower due to the development of new packing; Therefore, the research and application of packing extraction towers have developed rapidly. However, the liquid-liquid extraction process carried out in the packing extraction tower, the density difference between the two phases is small, the viscosity of the continuous phase is high, the axial backmixing of the two phases is severe, and the interface condition is complex. Therefore, design and calculation of Packing Extraction Tower are difficult, and there are many factors that affect the extraction process. The formula used for calculation can only be used for rough estimation, and sufficient allowance should be considered during design. Compared with the design of gas-liquid mass transfer equipment such as distillation towers and absorption towers, the design of packing extraction towers is different.

1. Different requirements for the selection of fillers

Packing extraction towers often use internal packings similar to gas-liquid mass transfer processes, but the dispersed phase inside the packing extraction tower should not be wetted with the surface of the packing. If the liquid droplet group is wetted with the surface of the packing, it will cause coalescence and form a liquid flow along the packing.

2. The influence of axial backmixing cannot be ignored

In the process of liquid-liquid extraction, the density difference of the two phases is low , and the viscosity is high. The flow state of the two phases in the countercurrent process is relatively complex. Axial mixing has an extremely adverse impact on the performance of the packing extraction tower, as it not only reduces the mass transfer driving force, but also reduces the processing capacity of the packing extraction tower. The packing extraction tower suppresses the adverse effects of axial mixing through the selection of packing and the design of internal components.

3. The physical properties of the system（liquid Mixture） are an important factor affecting design calculations

The physical properties of the system, such as interfacial tension, density and viscosity of the two phases, have a significant impact on the performance of the packing extraction tower. It has a decisive impact on the processing capacity and mass transfer efficiency of the tower. Based on the physical properties of the actual system, appropriate data should be referenced in the design calculation process and appropriate design calculation formulas should be selected.

Therefore, when HDH is to design a packing extraction tower for you, following parameters and technical data is needed:

1. Raw Material density, extractant density; 

2. After knowing the processing capacity(Amount), ratio of material to extractant , the diameter of the Sieve plate extraction tower can be determined; 

3. Have you conducted a small test or the current operation status of the kettle type? The main purpose is to know how many extraction cycles needed that can meet the process requirements, so that the height of the extraction section can be determined; 

4. Material layering time, which can calculate the cylinder volume of the clarification section; 

5. Is there any emulsification phenomenon? If so,a sewage outlet should be considered in layered section ; 

6. What is the pH value of the material and its characteristics, making it convenient for selecting equipment materials(proper material to build the packing Extraction Tower）;