Low temperature plasma waste gas treatment technology

Low-temperature plasma waste gas treatment technology has a wide range of applications, and the flow rate and concentration of gas are two very important factors for the application of gaseous pollutants treatment technology. Biological filtration and combustion technology can be applied to a higher concentration range, but is limited by the flow rate of the gas; electron beam irradiation technology has only a very narrow range of gas flow rate. The low-temperature plasma technology has a wide application range for the flow rate and concentration of the gas, and its wide application is self-evident.

The low-temperature plasma waste gas treatment technology is simple. The adsorption method should consider the regular replacement of the adsorbent, and it may cause secondary pollution during desorption; the combustion method requires a high operating temperature; in the combined catalytic method, the catalyst is selective, and some Conditions (such as high temperature) will cause catalyst deactivation. Photocatalytic method can use ultraviolet light to irradiate the catalyst to generate photoion groups, etc.; biological method must strictly control conditions such as pH value, temperature and humidity to suit the growth of microorganisms. The low-temperature plasma technology better overcomes the shortcomings of the above technologies. The reaction conditions are normal temperature and high voltage discharge, the reactor structure is simple, and mixed pollutants can be eliminated at the same time (in some cases, it also has a synergistic effect), and no secondary pollution will occur. wait. In terms of economic feasibility, the low-temperature plasma reaction device itself has a single and compact system structure. In terms of operating costs, microscopically speaking, the high-voltage discharge process only increases the electron temperature while the ion temperature remains basically unchanged, so that the reaction system can be maintained. Low temperature, so not only the energy utilization rate is high, but also the equipment maintenance cost is very low.

Low-temperature plasma waste gas treatment technology has significant advantages in the treatment of gaseous pollutants. The basic principle is that high-energy electrons are generated under the acceleration of a high-voltage electric field. When the average energy of the electrons exceeds the chemical bond energy of the target molecular chemical bond, the molecular bond is broken to achieve the purpose of eliminating gaseous pollutants. It has become the current research frontier and is being increasingly used in the treatment of gaseous pollutants.