Reasons for discharge in purification electrostatic demisters and troubleshooting methods
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The last edit to this post was made by danshenyouzui on 2025-4-23 at 20:38. There are various reasons that can cause fluctuations in current and voltage, as well as issues with power supply, in electric mist eliminators used for acid production from smelting flue gas. The main reasons are summarized as follows: 1. As production capacity increases, the volume of flue gas to be purified grows, resulting in an excessive load on the electric mist eliminator and thus fluctuations in current and voltage； The weight can be increased by adding a heavier weight. 2. The air flow distribution plate is displaced, resulting in uneven air flow distribution ； Inspect and repair the airflow distribution plate ； 3. There are debris and films inside the electric fog generator; these need to be thoroughly inspected. In one case, a film from an electrolytic tube came off and stuck to the tube, which made it difficult for the electric fog generator to operate at higher voltage levels ； 4. Water enters the room containing the electric heater insulators (at the flange surface); discharge can occur easily during rainy days. It is necessary to insulate this room and cover it with aluminum sheeting to prevent rainwater from getting in ； 5. In the transformer and high-voltage generator, the power supply-ground wire is too thin, which causes frequent discharges; a 4-square millimeter thick copper wire should be used for the power supply-ground wire ； The wiring should be placed 25 cm away from the high-voltage generator. 6. Polar lines should be eccentric; check that each polar line is centered within the anode tube and secured to prevent excessive swinging of the polar lines ； 7. Polar line broken ；
Possible reasons for discharge in electric mist eliminators include equipment overload, uneven airflow distribution, internal debris, or structural issues. To address these issues, the following measures can be taken: 1. Increase the weight of the counterweight appropriately based on the increased production capacity, to ensure a balanced load on the electrostatic fogger. 2. Inspect and repair the air distribution plate to ensure even airflow. 3. Regularly inspect the interior of the electric demister to remove debris and detached films. 4. Insulate and seal the insulator compartment of the electric heater to prevent rainwater from entering. 5. Use thicker copper wires for the power-ground wire to reduce discharge phenomena. 6. Check whether the polar lines are eccentric, and ensure that each polar line is fixed at the center of the anode tube. 7. Regularly check the pole connection and condition to ensure good contact. The above steps can help reduce or eliminate the discharge problems of electric mist eliminators. .
Reasons for discharge in purification electrostatic demisters and troubleshooting methods
Our company uses 10% ammonia water for desulfurization, followed by two stages of electrostatic demisting. Each time, the density and pH of the liquid ammonium sulfide in the cycle are slightly high, which causes severe discharge during electrostatic demisting; it is necessary to reduce the operating parameters, otherwise the system will shut down