What are the technical characteristics of electrostatic precipitator?

Electrostatic precipitator is a method of separating suspended particles from a gas using electrostatic force. The separation energy is applied directly to the dust particles by means of electrostatic force, rather than on the entire gas stream, so the energy consumption is low and the air pressure loss is small. The relatively large electrostatic force acts on the particles, which can effectively capture even the smallest particles, so the dust removal efficiency is very high (greater than 99%).

In addition, it also has the characteristics of large gas capacity, continuous operation, and can be used in high temperature and high pressure occasions, and is widely used. Its main disadvantages are that the equipment is huge, occupies an area, and the one-time investment cost is high, and it is not easy to realize the capture of high specific resistance dust. Ordinary purifiers use filter paper to filter dust in the air, which is easy to block the filter holes, and the dust accumulates more and more, which not only has no sterilization effect, but also is easy to cause secondary pollution.

The electrostatic precipitator technology has the following advantages:

1) High dust removal efficiency;

2) It can purify a large amount of air;

3) The particle size range that can be removed is wide;

4) It can purify dusty flue gas with high temperature;

5) Simple structure, low airflow velocity, small pressure loss;

6) The energy consumption is lower than that of other types of dust collectors;

7) The electrostatic precipitator can realize microcomputer control and remote operation.

Electrostatic precipitator is one of the gas dust removal methods. When the dust-containing gas passes through the high-voltage electrostatic field, it is electroelectrically separated, and the dust particles are combined with negative ions to carry negative electricity, and tend to discharge on the surface of the anode and be deposited. It is used in metallurgy, chemical and other industries to purify gases or useful dust particles.

A dust collection method that ionizes a gas using an electrostatic field so that dust particles are electrically adsorbed onto the electrode. In a strong electric field, air molecules are ionized into positive ions and electrons, and the electrons encounter dust particles in the process of running to the positive electrode, so that the dust particles are negatively adsorbed to the positive electrode and collected. Electrostatic precipitator is one of the gas dust removal methods.

When the dust-containing gas passes through the high-voltage electrostatic field, it is electroelectrically separated, and the dust particles are combined with negative ions to carry negative electricity, and tend to discharge on the surface of the anode and be deposited. It is used in metallurgy, chemical and other industries to purify gases or useful dust particles. A dust collection method that ionizes a gas using an electrostatic field so that dust particles are electrically adsorbed onto the electrode.

In a strong electric field, air molecules are ionized into positive ions and electrons, and the electrons encounter dust particles in the process of running to the positive electrode, so that the dust particles are negatively adsorbed to the positive electrode and collected. Of course, through technological innovation, there are also ways to collect dust from negative plates. In the past, it was often used in coal-fueled factories and power stations to collect coal ash and dust from flue gas.

In metallurgy, it is used to collect oxides such as tin, zinc, lead, aluminum, etc., and there are also dust removal and sterilization products that can be used in the household. According to the common electrostatic precipitator types in China, it can be roughly divided into the following categories: vertical and horizontal according to the direction of air flow, plate type and tube type according to the precipitation pole type, and dry and wet type according to the dust removal method on the precipitation plate.

Affected by the operating conditions such as gas body temperature and temperature, the same kind of dust is operated at different temperatures and humidity, and the effect obtained is different, and some dust works very well at a certain temperature and humidity, and the electrostatic precipitator can hardly be used due to the change of dust resistance at another temperature and humidity.

The electrostatic precipitator air purifier uses the high-voltage direct current electric field to ionize the gas molecules in the air, produce a large number of electrons and ions, move to the poles under the action of the electric field force, and encounter the dust particles and bacteria in the air flow during the movement to make them charged, and the charged particles move to the plates with opposite charges under the action of the electric field force, and the free ions in the air should move to the poles under the action of the electric field, the higher the voltage, the higher the electric field strength, and the faster the movement speed of the ions. Due to the movement of the ions, an electric current is formed between the poles. In the beginning, there are fewer free ions in the air and less current.

When the voltage rises to a certain value, the ions near the discharge electrode gain higher energy and velocity, and when they hit the neutral atoms in the air, the neutral atoms will break down into positive and negative ions, a phenomenon called air ionization. After the ionization of air, due to the chain reaction, the number of ions moving between the poles increases greatly, which is manifested as a sharp increase in the current between the poles (called corona current), and the air becomes a conductor, and the high voltage captures the bacterial particles, and instantaneously conducts electricity to break down the cell wall composed of proteins, so as to kill the bacteria adsorption and remove dust.

Electrostatic precipitationThe principle is that dusty gases are subjected to high pressureElectrostatic fieldWhen separated by electricity, dust particles are associated withNegative ionsAfter the binding belt is negatively charged, it tends to discharge on the surface of the anode and is deposited.

Electrostatic precipitator is one of the gas dust removal methods. The advantages of electrostatic precipitators are:

1. It can capture fine-grained dust above microns, and has high purification efficiency.

2. The resistance loss is small, and the total power consumption is still relatively small compared with the cyclone dust collector.

3. The allowable operating temperature is high, up to 400 degrees Celsius.

Above. 4. The range of treated gas is large.

5. Automatic control of operation can be fully realized.

Of course, there are also some shortcomings of electrostatic precipitators, such as the equipment is relatively complex, requiring a high level of equipment dispatch, installation and maintenance management; Not all types of dust have high purification efficiency; It is susceptible to the influence of operating conditions such as gas, body temperature, humidity, etc.