1、 Introduction to low temperature plasma technology:
The plasma produced by double dielectric barrier discharge is 1500 times higher than that produced by other technologies. This technology is energy-saving, environmental friendly and has a wide range of applications. The generated high-energy electrons, free radicals and other active particles are used to activate, ionize and decompose the components in the industrial waste gas, so as to produce a series of complex chemical reactions such as decomposition and oxidation, and then undergo multistage purification, so as to eliminate the peculiar smell, odor and pollutants discharged by various pollution sources, and make the toxic and harmful gases low toxic and non-toxic.
2、 Technical action principle:
Low temperature plasma is the fourth state of matter after solid state, liquid state and gas state. When the applied voltage reaches the discharge voltage of gas, the gas is broken down and produces a mixture including electrons, various ions, atoms and free radicals. In the process of discharge, although the electron temperature is very high, the temperature of heavy particles is very low, and the whole system presents a low-temperature state, so it is called low-temperature plasma. Low temperature plasma degradation of pollutants is to use these high-energy electrons, free radicals and other active particles and pollutants in waste gas to decompose pollutant molecules in a very short time and produce subsequent reactions to achieve the purpose of degrading pollutants.
3、 Basic process:
Process 1: direct bombardment of high-energy electrons
Process 2: oxidation of O atom or ozone O2 + e → 2O
Process 3: oxidation of OH radical H2O + e → OH + H, H2O + O → 2OH, H + O2 → OH + O
Process 4: reaction of molecular fragments + oxygen
4、 Technical features:
① Small size and light weight
The floor area is only 1 / 5-1 / 10 of that of biological deodorization equipment, which is very suitable for landscape requirements, compact layout, narrow site
Items with special requirements such as intermittent operation.
② Low energy consumption
The system has low resistance, low power and low energy consumption.
③ Less investment
Save land occupation and civil engineering costs, and flexible installation and commissioning.
④ Low noise and no pollution
No residue and secondary pollution, environmentally friendly and beautiful.
⑤ Simple operation and convenient maintenance
The equipment can be started and stopped frequently according to the actual situation, and is suitable for occasions with large temperature difference, humidity and humidity change, without thermal insulation
Wet, easy to operate, manage and maintain, just clean the filter and ion tube every half a year.
5、 Application object:
Applied to odor gas treatment, it has the advantages of good treatment effect, low operation cost, no secondary pollution, stable operation, simple operation and management, ready to use and so on.
The generated high-energy electronic energy is high and the density of free radicals is large. Therefore, most toxic and harmful substances can be decomposed, and the treatment objects are wide. The eight malodorous substances hydrogen sulfide, ammonia, trimethylamine, methyl mercaptan, methyl sulfide, carbon disulfide, styrene and dimethyl disulfide specified in the national malodorous pollution control standard can be effectively removed.