Electrostatic precipitatorThe working principle of is to use a high-voltage electric field to ionize the flue gas, and the dust in the airflow is charged and separated from the airflow under the action of the electric field. The negative electrode is made of metal wires with different cross-sectional shapes and is called a discharge electrode.

The positive electrode is made of metal plates with different geometric shapes, called a dust collecting electrode.Electrostatic precipitator manufacturerThe performance is affected by three factors: dust properties, equipment structure, and flue gas flow rate. 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. These situations will cause a decrease in dust removal efficiency.

Introduction

quietElectrostatic precipitatorThe power supply consists of a control box, a step-up transformer, and a rectifier. The voltage output of the power supply also has a significant impact on the dust removal efficiency. Therefore, static electricitydust collectorThe operating voltage should be maintained at 40-75kV or even above 100kV.

working principle

The basic principle of electrostatic precipitator is to use electricity to capture dust in flue gas, which mainly includes the following four interrelated physical processes: (1) ionization of gas. (2) Charging of dust. (3) Charged dust moves towards the electrode. (4) Capture of charged dust.

The capture process of charged dust: On two metal anodes and cathodes with significantly different curvature radii, a high-voltage direct current is used to maintain an electric field sufficient to ionize the gas. The electrons generated by gas ionization, anions and cations, are adsorbed onto the dust passing through the electric field, allowing the dust to acquire charge. Under the action of electric field force, dust with different polarities move towards electrodes of different polarities and deposit on them, achieving the goal of separating dust and gas.

basic structure

The electrostatic precipitator consists of two main parts: one is the electrostatic precipitator body system; The other part is the power supply device that provides high-voltage direct current and the low-voltage automatic control system. The schematic diagram of the structure of the electrostatic precipitator is shown in Figure 1. The high-voltage power supply system is powered by a step-up transformer, and the dust collector is grounded. The low-voltage electrical control system is used to control the temperature of the electromagnetic vibration hammer, ash unloading electrode, ash conveying electrode, and several components.