Centrifugal and flow distinction

In chemical production, centrifugal and flow equipment are two common equipment, often used in different processes. Understanding their principles, characteristics and application scenarios is of great significance for optimizing production processes and improving equipment efficiency. This article will analyze the difference between centrifugal and tubular equipment from the aspects of equipment principle, operating parameters, application fields, etc., and provide reference for selecting suitable equipment.

Fundamentals of 1. Centrifugal and Tubular Equipment

centrifugal equipment and flow equipment in the working principle of a significant difference, this difference directly affects their scope of application in chemical production.

1. The working principle of centrifugal equipment

the basic principle of centrifugal equipment is based on the use of centrifugal force. The equipment uses the high-speed rotating rotor to throw the material to the edge, and uses centrifugal force to disperse the liquid or solid into fine particles, so as to achieve the purpose of separation, washing or dehydration. Centrifugal equipment is usually used for filtration, clarification, separation and concentration of liquids.

2. The working principle of installing flow-through equipment

the principle of the cross-flow mixer is different from the centrifugal equipment, it is based on the phenomenon of cross-flow in fluid mechanics. The equipment disperses the liquid or solid into tiny particles through a high-speed rotating rotor, shearing and crushing at the same time. This equipment is commonly used in emulsion processing, suspension processing and solid-liquid separation processes.

The main difference between 2. centrifugal and flow equipment

centrifugal and cross-flow devices are significantly different in terms of function, principle, and application areas, as follows:

1. The main difference between the working state

• centrifugal equipment: The equipment is in a centrifugal state, that is, when the equipment rotates, the material is thrown to the edge mainly by centrifugal force.
• flow-through equipment: The equipment is in a flow-through state, that is, when the material flows inside the equipment, it mainly depends on the shear force in fluid mechanics and the interaction between particles.

2. The main differences in the field of application force.

• Centrifugal equipment: Commonly used in liquid filtration, precipitation separation, concentration, dehydration and other processes. For example, for the filtration of petroleum refined, particle separation in chemical products, etc.
• flow-through equipment: Commonly used in emulsion processing, suspension processing, solid-liquid separation and other processes. For example, it is used for emulsion dispersion in pharmaceutical process, suspension treatment in food industry, etc.

3. Different operating parameters

• centrifugal equipment: Usually higher speed and pressure are required, and the rotation speed of the equipment directly affects the centrifugal effect.
• flow-through equipment: The speed and pressure of the equipment have little effect on the performance of the equipment and mainly depend on the fluid mechanics parameters.

4. Different structure design

• centrifugal equipment: The structure of the equipment is usually compact, and the separation medium inside the equipment needs to be designed to be rotatable or detachable.
• flow-through equipment: The equipment structure is usually more complicated, and the optimization of fluid mechanics parameters needs to be considered to ensure the uniform dispersion and shearing of particles.

Comparison of Advantages and Disadvantages of Centrifugal Equipment and Flow Equipment in 3. Selection

when choosing centrifugal or flow equipment, trade-offs need to be made based on specific process requirements and equipment characteristics.

1. Advantages and disadvantages of centrifugal equipment

• advantages:

• centrifugal equipment is suitable for liquid filtration, precipitation separation and other processes.

• Compact structure, suitable for small batch production.

• It can handle larger particles.

• Disadvantages:

• centrifugal equipment has high requirements for equipment maintenance, and is prone to blockage or performance degradation.

• In the treatment of liquid, easy to produce bacterial contamination.

2. The advantages and disadvantages of installing flow-through equipment

• advantages:

• the equipment can handle micron-level suspensions and is suitable for high-precision processes such as emulsion processing.

• It has good antibacterial properties and is suitable for food processing and pharmaceutical manufacturing processes with high hygiene requirements.

• The structural design is more flexible and suitable for a variety of technological processes.

• Disadvantages:

• the initial investment for installing flow-through equipment is large, the equipment is complex and the maintenance cost is high.

• In the handling of solid particles, problems of clogging of equipment or performance degradation are likely to occur.

How to choose the right equipment for the 4?

When selecting centrifugal or tubular equipment, the following factors need to be considered:

1. process requirements: Identify the key steps in the process, such as filtration, dispersion, cleaning, etc., to determine the main functions of the equipment.
2. Equipment characteristics: According to the special requirements of the process, such as sanitary performance, equipment maintenance requirements, etc., select the appropriate equipment type.
3. Equipment parameters: According to the specific parameters of the process (such as flow, temperature, pressure, etc.), select the appropriate equipment specifications.

5. Conclusion

centrifugal and cross-flow equipment are two important equipments in chemical production, and there are significant differences in their working principles, application fields and equipment characteristics. Selecting the right equipment requires a combination of specific process requirements, equipment characteristics, and maintenance requirements. For processes that require high separation efficiency and particulate handling capacity, flow-through equipment may be more suitable, while for processes that need to handle larger particles and high cost performance, centrifugal equipment may be more suitable. Through in-depth analysis of process requirements and equipment characteristics, chemical production can achieve a multiplier effect in equipment selection.