SZD type combined electrostatic precipitator

The SZD type combined electrostatic precipitator consists of a steel structure shell, an air inlet, a uniform airflow distribution plate, an air outlet, and a groove plate device, as well as a tubular sedimentation electrode, tubular auxiliary electrode, and fishbone corona electrode three electrode structure. It is applied in power plant boilers, various industrial boilers, and various industrial furnaces in metallurgy, building materials, and non-ferrous smelting industries.

The SZD type combination electrostatic precipitator can be divided into two types: tubular and plate electrostatic precipitators. A tubular electrostatic precipitator is a device in which an electrode is installed in the middle of a circular tube, and the inner wall of the tube serves as the surface of the dust collecting electrode. It is commonly composed of multiple rows of tubes arranged in parallel. Plate type electrostatic precipitators install discharge electrodes between a series of parallel channels.

According to the direction of airflow, it can be divided into vertical and horizontal electrostatic precipitators. Vertical electrostatic precipitators are generally made into tubes, with airflow flowing from bottom to top and often operated under positive pressure. Horizontal electrostatic precipitators are commonly used in industry due to their high separation efficiency and easy maintenance, where the airflow flows horizontally.

Installation requirements for SZD type combined electrostatic precipitator

The SZD type combined electrostatic precipitator is a device that uses electrostatic purification method to capture dust in flue gas. It is an ideal equipment for purifying industrial waste gas. Its net profit mainly relies on two systems: the discharge electrode and the precipitation electrode. When high-voltage direct current is input between the two poles, the electrode space generates anions and cations, which act on the surface of the exhaust gas dust particles passing through the electrostatic field. Under the action of the electric field force, they move towards the electrode with opposite polarity and deposit on the electrode, achieving the purpose of dust collection. Both polar systems have vibration devices. When the vibration hammer periodically strikes the polar devices, the dust adhering to them is shaken off and falls into the lower ash hopper, which is discharged outside the machine through the ash discharge device. The purified exhaust gas is discharged into the atmosphere through the chimney at the outlet, completing the flue gas purification process.

The SZD type combined electrostatic precipitator integrates three complex dust collection mechanisms: electric cyclone, electric blocking, and electric coagulation.

The SZD type combination electrostatic precipitator is used in industries such as building materials, metallurgy, chemical engineering, and power to control pollution, recycle materials, and collect dust from cement mills.

Due to the electric field of the electrostatic precipitator, the thick dust gas will be affected by the electric field, and the dust particles will be adsorbed on the dust removal plate. The dust removal plate is struck by a vibrating hammer, and the accumulated dust on its surface is recovered into the dust removal bag. The specific resistance of dust is an indicator for evaluating conductivity, which has a direct impact on dust removal efficiency. The specific resistance is too low, making it difficult for dust particles to remain on the dust collection electrode, resulting in their return to the airflow. If the specific resistance is too high, the dust particles that reach the dust collection electrode are not easily discharged, and a voltage gradient is formed between the dust layers, which can cause local breakdown and discharge phenomena. In addition, the properties of dust can also affect the efficiency of dust removal and the service life of dust removal equipment.