Electrostatic precipitator
A method of gas dust removal. The dust-containing gas is electrically separated when passing through a high-voltage electrostatic field, and after the negative combination of the dust particles and the negative ions, the surface of the anode is discharged and deposited. Used in the metallurgical, chemical and other industries to purify gases or recover useful dust particles. A dust collecting method for ionizing a gas by an electrostatic field to electrically adsorb dust particles to the electrode. In a strong electric field, air molecules are ionized into positive ions and electrons, and electrons encounter dust particles in the process of the positive electrode, so that the dust particles are negatively charged and absorbed to the positive electrode to be collected. Of course, in recent years, through technological innovation, there is also a way of collecting dust using a negative electrode plate. In the past, it was often used in coal-fired factories and power stations to collect coal ash and dust from flue gas. Metallurgy is used to collect oxides of tin, zinc, lead, aluminum, etc., and now there are dust sterilization products that can be used in households.
The electrostatic precipitator air purifier uses a high-voltage direct current electric field to ionize gas molecules in the air, generates a large amount of electrons and ions, moves to the two poles under the action of the electric field force, and encounters dust particles and bacteria in the airflow to make it charged during the moving process. The charged particles move under the action of the electric field force and the opposite direction of the airflow. Under the action of the electric field, the free ions in the air move toward the two poles. The higher the voltage, the higher the electric field strength, the faster the ion movement speed. . Due to the movement of the ions, a current is formed between the poles. At the beginning, there are fewer free ions in the air and less current. After the voltage rises to a certain value, the ions near the discharge electrode get higher energy and speed. When they hit the neutral atoms in the air, the neutral atoms will decompose into positive and negative ions. This phenomenon is called air ionization. After the ionization of the air, due to the interlocking reaction, the number of ions moving between the poles is greatly increased, and the current between the poles (called the corona current) is sharply increased, the air becomes a conductor, and the high-strength voltage captures the accompanying bacterial particles, which is instantaneously conductive. Break down the cell wall composed of protein to achieve the bacteria to remove dust.