Types and working principles of industrial dust removal equipment

1： Mechanical dust removal equipment
There are three types of mechanical dust removal equipment, namely gravity dust collector, cyclone dust collector, and inertia dust collector.
The working principle of a gravity dust collector is to use gravity to remove dust. Gravity relies on the gravity of the Earth's center of gravity to separate the dust in the gas as it settles.
The cyclone dust remover relies on centrifugal force, exerts centripetal separation force with Circular motion objects, and operates according to the principle of obtaining materials with large mass and fast rotation speed in the process of rotation.
Inertial dust collector utilizes the inertia of dust, which reflects the force of its own motion state. When subjected to external forces, it changes the motion state, causing inertial objects to change their motion state compared to objects with greater inertia.
2： Working principle of electrostatic precipitator
The working process of an electrostatic precipitator is divided into four stages: gas ionization, dust charging, dust settling, and dust cleaning.
Gas ionization causes corona discharge at the electrode, which generates a large number of free electrons and positive ions. Dust charges pass through the electric field space, causing free electrons and negative ions to collide with the dust. Dust settling causes the concentrated charged dust to reach the dust collection surface after a certain period of time, releasing charges and depositing on it. Finally, the dust accumulates to a certain thickness, and the dust on it is cleaned using a dust cleaning device, Falling to the bottom of the ash hopper.
3： Working principle of bag dust removal equipment
When gas containing dust is sucked into the filter bag, particles larger than the bag are settled by gravity or separated by the fibers of the bag due to the larger volume of the bag. After collision between smaller dust particles and the filter bag, the surface fibers of the bag attach to the surface of the filter bag. When the spraying system of the bag dust removal equipment sprays, the dust falls into the ash hopper.
4： Working principle of wet dust collector
The water in the wet dust collector box comes into contact with dust and gas, causing water and dust to collide, diffuse, and condense. Then, due to the condensation effect of water, large particles are formed and ultimately carried away by water flow. The smaller and more water droplets in a wet dust collector, the more opportunities they have to come into contact with dust, and the higher the efficiency of collision, diffusion, and agglomeration.