Electric dust collector; It is a supporting equipment for thermal power plants. Its function is to remove particulate smoke and dust from the exhaust gas of stoves or oil fired boilers, thereby significantly reducing the amount of smoke and dust emitted into the atmosphere. This is an important environmental protection equipment for environmental pollution and improving air quality.

Performance characteristics of electrostatic precipitator:

1. Adopting a complete set of computer design, the design is accurate.

2. The shell adopts a frame structure with good stability and can be designed according to different pressure and temperature resistance requirements.

3. The inlet and outlet methods can be designed in various forms according to the process layout and flue gas characteristics, and the process layout is flexible and varied.

4. Adopting a blocking and guiding type airflow distribution device, the airflow is evenly distributed without any blockage.

5. The precipitation electrode adopts a 480C plate, and the discharge electrode adopts a new RS tubular barbed wire. The electrode configuration is reasonable, the discharge is uniform, and the discharge performance is good.

6. The connection between the discharge electrode and the frame is reasonable, without any disconnection or disconnection.

7. Side arm hammer type vibration, with uniform transmission of vibration force and good effect, easy to clean dust.

The main structure of the electrostatic precipitator is a steel structure, all welded from steel sections, with a skin (thin steel plate) and insulation material covering the outer surface for the convenience of design, manufacturing, and installation. The structural design adopts a layered form, with each piece consisting of several main beams in a frame style, and the pieces are connected to each other by large beams. In order to install the skin and insulation layer, secondary beams need to be welded between the main beams. For such a large structure, the workload and number of units will be huge if they are all connected according to physical objects. According to the actual design requirements of the project and the main structure design of the electrostatic precipitator, the main focus is on the structural strength, stability, and large displacement of the suspended cathode plate main beam. For local areas, the main focus is on the fatigue damage of the connection between the cathode plate and the main beam under long-term cyclic impact; The optimal frequency selection for smoke and dust detachment on the cathode plate; The optimal choice of stiffness between the surface skin (thin plate) of the structure under wind load and the connection between the primary and secondary beams. In addition, the controller of the electrostatic precipitator is also an important component, commonly used in ALSTOM EPIC III. The main function of controlling the dust collector is to regulate the operation of the electric field and control the charging of dust. Intelligent controllers such as ALSTOM's EPIC III can further improve the energy-saving and emission reduction efficiency of the device.

The working principle of an electrostatic precipitator is that when the flue gas passes through the main structure of the electrostatic precipitator, the smoke and dust are positively charged, and then the flue gas enters the electrostatic precipitator channel with multiple layers of cathode plates. Due to the mutual adsorption between positively charged smoke particles and the cathode plate, the particulate smoke particles in the flue gas are adsorbed on the cathode. When the cathode plate is hit at regular intervals, the thick smoke particles fall into the ash hopper below the structure of the electrostatic precipitator under the dual effects of self weight and vibration, thus achieving the purpose of smoke particles in the flue gas. Due to the large power output of general units in thermal power plants, such as 600000 kW units, with an hourly coal consumption of about 180 tons, the amount of smoke and dust can be imagined. Therefore, the corresponding structure of the electrostatic precipitator is also relatively large. The cross-sectional size of the main structure of the electrostatic precipitator used in general thermal power plants is about 25-40 × 10-15m. If the height of the ash hopper is added to the 6-meter height and the height of the smoke transport space, the entire height of the electrostatic precipitator is above 35 meters. For such a large steel structure, not only the autonomous, smoke load, wind load, but also the static and dynamic analysis under seismic load need to be considered. At the same time, the stability of the structure must also be considered.