1. Inertial separation method
The principle of inertia separation technology is to use the oil fume under the action of inertia to change the direction of the oil fume airflow, so that the particles in the oil fume escape the airflow and reach the deposition surface.
The equipment designed according to this oil fume treatment technology has simple structure and less energy consumption, but its removal efficiency is low, it is easy to adhere to and difficult to clean up.
2. Liquid washing method
The principle of liquid washing method is to absorb the pollutants in the flue gas with an absorbing liquid, so that it is transferred from the gas phase to the liquid phase, so that the pollutants can be removed.
The key to this oil smoke treatment technology is the absorption effect of the absorption liquid on the oil smoke, the general use of alkaline liquid treatment effect will be better, but the concentration should not be too high, because it will cause corrosion to the equipment.
3. Adsorption method
The principle of adsorption method is to use the adsorption medium to absorb the pollutants in the oil smoke, so as to achieve the effect.
This lampblack treatment technology can not only remove pollutants, but also has a significant purification effect on the odor purification of lampblack, and the lampblack removal rate is as high as 85% to 95%. However, when the equipment is just running, the effect is good. As the running time becomes longer, the oil smoke begins to adhere to the adsorption material, and the adsorption layer gradually thickens, which directly leads to the gradual decline of the adsorption capacity and the increase of the operation resistance.
4. Filtration method
The principle of filtration method is that the oil flue gas passes through the filter layer made of oil-wet polymer filter material, and the pollutants are intercepted to achieve the filtration effect. However, the filter layer is easily saturated and there is noise, so it is necessary to deal with the noise. This equipment also needs to replace the filter material frequently, which increases the cost, and if the filter material is not properly treated after use, it will cause secondary pollution.
5. Electrostatic method
The principle of electrostatic method is that the oil fume uses the electrons emitted by the cathode to collide with air molecules in the high voltage electric field, so that the oil fume particles are charged and move to the plate under the action of the electric field, and then are collected to achieve the effect of oil fume purification.
The equipment advantage of using this lampblack equipment treatment technology is that the footprint and operation resistance are relatively small, and the removal rate of lampblack particles is as high as 85% to 95%, but the disadvantage is that the production cost is high, the operation energy consumption is high, and the odor cannot be removed.