The high-temperature flue gas and dust generated by the foundry are important waste gas pollutants. China's economic development, energy utilization, reduction of environmental pollution, and governanceCasting waste gas treatmentIt's an important issue. So what effective waste gas treatment equipment and processes can be used to treat the exhaust gas generated by the foundry? Meet the pollution discharge standards.

The dust removal principle of the plate electrostatic precipitator is adopted. In the non-uniform electric field formed by the high-voltage direct current power supply, the negative electrode of the power supply is also called the cathode, discharge electrode, and corona electrode. The positive electrode (grounding) of the power supply is also called the anode, collector, and precipitation electrode. When the voltage rises to a certain value, the electric field strength near the cathode forces the gas to undergo collision ionization, forming a large number of positive and negative ions. Due to the extremely short distance and low speed of cations near the corona electrode, the chance of encountering dust is rare. Therefore, the vast majority of dust collides with long distance negative ions and carries negative charges, flying towards the dust collection electrode. Only a very small amount of dust deposits on the corona collector. The dust collector and corona electrode are regularly vibrated, and the two-stage adsorbed dust falls into the ash hopper and is discharged to the conveying machinery through the ash discharge device for transportation.

Casting exhaust gashandleThe main process is to use the main body of the electrostatic precipitator to make the smoke and dust carry positive charges, and then the smoke enters the channel of the electrostatic precipitator 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 smoke particles with a certain thickness fall into the ash hopper below the structure of the electrostatic precipitator under the dual effects of self weight and vibration, thereby achieving the goal of removing smoke particles from the flue gas.

The use of this exhaust gas treatment equipment process in the foundry has been tested to have the ability to capture fine dust particles of 0.01 microns or more, with low resistance loss, relatively low power consumption, a large gas treatment range, and can fully achieve operation and automatic control.