The MDC and PDC coal mill bag dust collectors produced by Hebei Chuang Environmental Protection Equipment Co., Ltd. are supporting equipment for thermal power plants. Their 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 improving environmental pollution and air quality. Its working principle is that when the smoke passes through the flue in front of the main structure of the electrostatic precipitator, the smoke carries a positive charge, and then the smoke enters the electrostatic precipitator channel with multiple layers of negative 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. The cathode plate is hit at regular intervals, causing the thick smoke particles to fall into the ash hopper below the MDC and PDC coal mill bag filter structure under the dual effects of self weight and vibration, thereby 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.

The performance characteristics of MDC and PDC coal mill bag dust collectors produced by Hebei Chuang Environmental Protection Equipment Co., Ltd. are as follows:

1. The smoke treatment capacity is large. Due to its modular structure, electrostatic precipitators can achieve large-scale installation. The electric field cross-sectional area of a single electrostatic precipitator reaches 400 square meters.

2. Purification, electrostatic precipitators can improve dust removal efficiency by lengthening the electric field length, increasing the flow area of the electric field, improving the control quality of the controller, and regulating the flue gas to meet the required dust removal efficiency. For conventional electrostatic precipitators, during normal operation, they remove dust. Capable of collecting fine dust particles larger than 0.01 microns. In the design, different operating parameters can be used to meet the required purification efficiency.

3. High operating temperatures are allowed, such as the SHWB circuit dust collector which allows an operating temperature of 250 ℃, while other types can reach 350-400 ℃ or higher.

4. Low resistance loss, low equipment resistance, and low total energy consumption. The total energy consumption of an electrostatic precipitator is composed of the energy consumption of equipment resistance, power supply device, heating device, vibration and ancillary equipment (such as ash discharge motor, gasification fan, etc.). The resistance loss of an electrostatic precipitator is generally 150-300Pa, which is about 1/5 of that of a bag filter, and its share in the total energy consumption is relatively low. Generally, processing a smoke volume of 1000m/h requires 0.2-0.8kWh of electricity consumption. Generally below 20 millimeters of water column, compared with cyclone dust collectors, even considering the power consumption of the power supply unit and vibration mechanism, the total power consumption is still relatively small.

Internal structure of MDC and PDC coal mill bag dust collectors produced by Hebei Chuang Environmental Protection Equipment Co., Ltd.:

Electric dust collector 1-electric plate; 2- Corona wire; 3-ceramic insulation support; 4- Quartz insulated tube; 5-Corona wire vibration device; 6-Yang plate vibration device; 7-corona wire hanging hammer; 8-inlet block splitter plate; 9-Inlet block splitter plate; 10- Export diversion plate; 11- Ash discharge device.