Wide spacing electrostatic precipitator

Wide spacing electrostatic precipitator is an ideal equipment for purifying industrial waste gases such as thermal power generation, metallurgy, and non-ferrous metals by using high voltage direct current to charge dust particles in the dusty gas, depositing them on the surface of the settling electrode under the action of electric field force, and then using vibration force to make the sheet-like dust fall into the device, thus deeply purifying the flue gas passing through the electrostatic precipitator and achieving environmental emission standards.

The so-called 'wide spacing electrostatic precipitator'; Wide spacing "; The electrode spacing of an electrostatic precipitator is greater than 300mm, specifically referring to electrode spacing of 400mm or more, making it an ideal equipment for purifying industrial waste gases such as thermal power generation, metallurgy, and non-ferrous metals.

Working principle of wide spacing electrostatic precipitator:

The wide spacing electrostatic precipitator consists of several main parts: inlet, uniform velocity plate, chamber, discharge plate, outlet, vibration rod, and dust collection plate. Its characteristic is that the front of the dust collection plate is parallel to the direction of the airflow, and is set at equal distances in front and behind the discharge plate, forming two dust collection zones, which can improve the dust removal effect effectively.

After entering the wide spacing dust collector from the top air inlet, the dusty gas passes through the cyclone separator at high speed, causing the dusty gas to spiral downwards along the axis, and using centrifugal force to remove coarser particles of dust, effectively controlling the initial dust concentration entering the electric field. Then, the gas enters the electric field through the lower ash hopper for operation. Due to the cross-sectional area of the lower ash hopper being several times larger than that of the inner pipe, according to the principle of constant rotational torque, the radial and axial wind speeds sharply decrease, creating a zero velocity interface and causing heavy particulate dust in the inner pipe to settle in the lower ash hopper, reducing the concentration of dust entering the electric field. The low concentration dust containing gas is collected by electrostatic precipitator and condensed on the anode and cathode plates, and the collected dust is transported away by the air lock and dust discharge device through dust cleaning and vibration.

Characteristics of wide spacing electrostatic precipitators

1 can effectively capture high specific resistance smoke and dust. The phenomenon of wide spacing anti corona is reduced, and due to the high wind speed near the corona wire, the smoke and dust are not easily bonded, making it difficult for electricity to produce corona locking phenomenon.

2. Can capture smoke and dust (0.01um). Wide spacing electrostatic precipitators can increase operating voltage, accelerate the agglomeration of smoke and dust, increase the particle size of smoke and dust, improve the driving speed of smoke and dust, and facilitate the capture of smoke and dust.

3. Save investment. Due to the increase in electrode distance, the number of corona electrodes decreases and the weight of the dust collector decreases. But for a pole spacing of 400-500mm, the cost of increasing the voltage is minimal or does not require any additional cost.

4. Easy to maintain and install. The installation error of general electrostatic precipitators is extremely strict, and the installation error of electrostatic precipitators with pole spacing of 400-500mm can be slightly relaxed. Moreover, wide pole spacing electrostatic precipitators are easy to replace corona wires.

5. Reduce electricity consumption. Although the corona electrode wire current of the wide spacing electrostatic precipitator increases, the number of corona electrodes decreases, resulting in a decrease in total current and a decrease in total power.

6. Some applicable conditions. Smoke contains a large amount of dust, causing a decrease in spark voltage and an increase in the space charge effect of smoke, resulting in a decrease in charge stability. In practice, a combination of wide and narrow pole spacing can be adopted, where the front electric field adopts a conventional spacing and the rear electric field adopts a wide spacing.

Installation of wide spacing electrostatic precipitator:

Before installing the wide spacing electrostatic precipitator, carefully understand the overall drawing, installation diagram, and instructions of the electrostatic precipitator, and strictly follow the drawings.

1. Before installing the equipment, the dimensions of the civil foundation should be checked. If there are any discrepancies, they should be addressed by installing the supports on the foundation table and leveling them with a level.

2. Open the box, count and inspect according to the equipment list. Correct the deformation of components caused by lifting and long-term storage before installation. Sampling inspection shall be conducted on the main components (such as electrode plates, corona wire corona electrode frames). If the manufacturing deviation exceeds the design requirements, it shall be corrected. If it cannot be corrected, it shall be scrapped.

3. All parts of the electrode and precipitation electrode system are coated with one-on-one paint at the manufacturing plant. If they cannot be purchased, kerosene and carbon black seasoning can be used as substitutes.

4. The cleaning and refueling of transmission components shall be carried out in accordance with the (Mechanical Equipment Installation, Construction and Acceptance Specification).