Working principle of wet dust removal equipment

 

Wet dust removal equipment, also known as water treatment dust removal equipment, allows dusty gases, solids, and liquids to come into contact, utilizing the inertial collision and centrifugal force of water droplets to capture particles or simplify particle collection.

 

The working principle of wet dust removal equipment is that when there is relative motion between gas and water droplets, the flow direction of the water droplets will change when the gas cleanses them. The trajectory of the water droplets will change from a straight line to a curve. Dust with larger particle size and higher density can be carried away by the water flow when they come into contact with water. The larger the contact surface of the dusty gas, the higher the efficiency of expansion and condensation, which can collect more dust and achieve good air purification.

 
Classification of wet dust removal equipment

 

1: Spray tower

 

In the counter current spray tower, the dusty gas moves upward and the droplets move downward from the nozzle. Due to the inertial collision between particles, some larger particles will be collected by the droplets. This type of dust removal equipment has the characteristics of low pressure loss and simple composition.

 

2: Venturi tube

 

This type of equipment is mainly composed of Venturi tubes, namely contraction tubes, throat tubes, expansion tubes, and cyclone separators. It not only has the function of dust removal and purification, but also has the function of clean air. The structure is simple and the dust removal efficiency is high. However, the resistance to absorbing dust may be affected in different environments, and it has a cooling effect when used in industrial workshops.

 

3: Impact type

 

Impact dust removal equipment is used to treat gases and solids with high humidity and dust content in industrial waste gas. Due to high-speed liquid impact, the dusty substances will form an atomization effect. After atomization, they will be processed by the dust removal equipment and further decomposed by upward movement. The clean gas will be directly discharged into the chimney from the outlet of the impact dust removal equipment. This type of dust removal equipment is suitable for use in environments below 300 degrees Celsius at room temperature.

 

4: Water film type

 

Water film dust removal equipment uses cold wave gas to impact certain water films on the inner wall or other components of the dust removal equipment, so that dust can be effectively absorbed by the water film. With the ideal flow of water, it is discharged from the dust outlet for purification. Water film dust removal equipment can be divided into several categories, such as impact water film, louver water film, centrifugal water film, etc. These wet dust removal equipment have the characteristics of low water consumption and simple structure. Due to the special working principle, it will be difficult to arrange in practical use and have high requirements for site use.