Electric tar precipitator

Electric tar catcher refers to a coke oven gas primary cooling equipment that uses the action of high-voltage direct current electric field to separate tar droplets and gas. The electric tar catcher can be installed before or after the coke oven gas blower. Compared with mechanical tar removers, electric tar catchers have the characteristics of high tar capture efficiency, low resistance loss, and large gas processing capacity. Not only can it ensure the requirements for gas quality in subsequent processes, improve product recovery rate, but it can also significantly improve the operating environment.

Working mechanism

The discharge process of gas: Under normal circumstances, gas is non-conductive, but under the action of a high-voltage electric field, the electrons inside the gas will gain enough energy to become free electrons and conduct electricity, which is called spontaneous ionization phenomenon. The spontaneous ionization of gases is established in a non-uniform electric field. In a uniform electric field, as the voltage increases, if ionization occurs at any point in between, the two poles will immediately be filled with charged ions, and the gas in the entire space will be broken down. At this point, the current rapidly increases, forming a spark discharge. In non-uniform electric fields, the electric field strength rapidly decreases as the distance between the two poles increases.

Choice in industry:

According to the different polarity of the power supply, corona discharge can be divided into negative corona discharge and positive corona discharge. In industrial production, cathodic corona discharge is mostly used because under the same conditions, it can obtain higher current than anodic corona discharge, and its flashover voltage is also much higher than that of anodic corona discharge.

The main factors affecting the performance of electrostatic precipitators are:

Due to the many factors that affect the operational performance of electric tar precipitators, please inform us of the density, viscosity, specific resistance, gas temperature, pressure, humidity, flow rate, and impurity concentration of dust and droplets when selecting.