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Experimental study on sterilization of 30000 air volume low temperature plasma purifier

  • Publisher: Yan Wenhua

    Release date: September 14, 2020
  • Experimental study on sterilization of 30000 air volume low temperature plasma purifier

    low temperature plasma purifier Industrial waste gas treatment equipment and technology is a new generation of low-temperature plasma technology generated by high-frequency and high-voltage electric field based on the original corona discharge. It has the characteristics of high energy and high electron emission density. Its purification principle is as follows: In the process of discharge, electrons obtain energy from the electric field and convert the energy into the internal energy or kinetic energy of pollutant molecules by inelastic collision. These molecules are excited or ionized to form active groups. When the energy obtained by the pollutant molecules is greater than the binding energy of the molecular bond energy, the molecular bond of the pollutant molecule breaks down and is directly decomposed into simple atoms or single atoms Atoms form harmless gas molecules. The plasma contains a large number of high-energy electrons, positive and negative ions, excited state particles and strong oxidizing post type groups. These active particles collide with some exhaust gas molecules and produce a large number of them at the same time OH HO O It has the same active group and strong oxidation O It can react with harmful gas molecules to produce harmless products. The physical effect is manifested in the charged dust collection. A large number of electrons in the plasma collide with the particle pollutants inelastic and adhere to their surface, which makes them charged. Under the action of electric field, the particulate pollutants are collected by dust collection. The biological function is manifested in its disinfection and sterilization effect. The mechanism is as follows: the positive and negative particles in the plasma make the shear force of electric energy generated on the surface of microorganism greater than the surface tension of cell membrane, resulting in the destruction of cell membrane and the death of microorganism. In the process of discharge, electrons obtain energy from the electric field and convert the energy into the internal energy or kinetic energy of pollutant molecules by inelastic collision. These molecules are excited or ionized to form active groups. At the same time, oxygen and water in the air can also produce a large number of new ecological hydrogen, active oxygen and hydroxyl oxygen under the action of high-energy electrons A series of complex chemical reactions were initiated after the collision. From the composition of active groups in plasma, it can be seen that there are rich chemical active particles in plasma, such as electrons, ions, radicals and excited molecules. The pollutants in the waste gas react with these active groups with high energy, and finally convert into CO2 and H2 O So as to achieve the purpose of purifying waste gas.

    30000 air volume low temperature Plasmacluster Ion Generator Analysis of sterilization experiment  

    Plasma purifier equipment: under the action of high-voltage electric field, it produces a large number of positive and negative oxygen ions, and has strong oxidizability. It can oxidize and decompose methyl mercaptan, ammonia, hydrogen sulfide, ether and other odor molecules in a short time, Plasma exhaust purifier The chemical bond of organic volatile gas is destroyed to form stable and harmless oxidation products such as carbon dioxide and water, so as to achieve the purpose of purifying air. At the same time, due to the role of ozone and ultraviolet radiation in the reactor, different categories of waste gas compounds can be removed, and the removal rate of high concentration waste gas can reach zero point eight four above.

    Advantages of plasma waste gas purifier: small floor area; fast reaction speed; good treatment effect of plasma exhaust gas purifier; complete decomposition of odor substances by plasma exhaust gas purifier; fast start and stop, namely, start and use immediately, not affected by temperature, simple operation; only electricity is needed in the reaction process, without adding other auxiliary chemicals and fillers.

    Malodor refers to the volatile substances in the atmosphere, water, waste and other substances, which can cause disgust or unpleasant smell of human body. Through the air medium, it acts on the human smell and is perceived as a kind of olfactory pollution. Odor is one of the typical public hazards. With the continuous improvement of people's living standards and the increasingly urgent demand for beautiful environment, its harm has attracted more and more attention of the public fifteen One of the six key environmental protection projects.

    30000 air volume, low temperature, etc Ion purifier Analysis of sterilization experiment

    Technical precautions for plasma purification equipment:

    one Whether the odor substance can be cracked depends on whether the chemical bond energy is higher than that provided UV Photons have a lower energy.

    two Reaction time (< 0 0.01s )Oxidation reaction (see reaction )Time required 2-3s

    three , provided UV If the total power of photons is insufficient or the oxygen content is insufficient, some intermediate by-products will be generated due to incomplete pyrolysis or oxidation, which will affect the purification efficiency. For high concentration macromolecular organic malodorous substances, it is more obvious.

    four UV The long-term stability of photolysis requires that the reaction temperature be less than 0 70℃ , dust content < 100mg/m³ Relative humidity zero point nine nine

    five When the conditions are satisfied, UV The purification efficiency of photolysis purification can reach zero point nine nine nine above.

    Hebei Shouyang environmental protection equipment Co., Ltd. has been committed to the research, development, installation and production of environmental protection dust removal, waste gas, desulfurization and denitration engineering equipment for many years, mainly including boiler dust collector, bag filter, filter drum dust collector, cyclone dust collector, wet electrostatic precipitator, electrostatic precipitator and waste gas odor purifier. At the same time, our company produces dust collector bag and dust collector framework With the cooperation of high-tech engineers and excellent production and installation team, the company has won high praise from the industry and customers,


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