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UV photocatalytic oxidation device

UV photocatalytic oxidation device

  • Classification:Exhaust gas treatment equipment
  • Views:second
  • Date of issue:2020-04-24
  • Product overview
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1. How it works


This product uses the special high-energy and high ozone UV light to irradiate the waste gas, cracking the industrial waste gas such as ammonia, trimethylamine, hydrogen sulfide, methylthiol, methylthioether, butyl acetate, ethyl acetate, dimethyldisulfide, carbon disulfide and styrene, sulfide H2S, VOC, molecular chain structure of benzene, toluene and xylene, so as to separate the organic or inorganic macromolecular odor compounds Under the irradiation of high-energy ultraviolet light, the sub chain is degraded into low molecular compounds, such as CO2, H2O, etc. Using high energy and high ozone UV light beam to decompose oxygen molecules in the air to produce free oxygen, i.e. active oxygen. Due to the imbalance of positive and negative electrons carried by free oxygen, it needs to combine with oxygen molecules to produce ozone.


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UV + O2 → o - + O * (active oxygen) O + O2 → O3 (ozone), as we all know, ozone has a very strong oxidation effect on organic matters, and has an immediate effect on the removal of industrial waste gas and other irritating odors. Industrial waste gas is purified after being input to the purification equipment by exhaust equipment


The equipment uses high-energy UV light and ozone to decompose and oxidize the industrial waste gas, which is degraded into low molecular compounds, water and carbon dioxide, and then discharged out of the room through the exhaust pipe. The molecular bond of bacteria in industrial waste gas is broken by high-energy UV beam, the nucleic acid (DNA) of bacteria is destroyed, and then the bacteria are purified and killed thoroughly by ozonation reaction. Considering the efficiency of air purification, we choose the device of - C band ultraviolet and ozonation combined with corona current higher, and use the principle of pulse corona discharge adsorption technology to treat harmful gases The - C band ultraviolet is mainly used to remove the decomposition and fission of hydrogen sulfide, ammonia, benzene, toluene, xylene, formaldehyde, ethyl acetate, ethane, acetone, urethane, resin and other gases. It is the transformation of organic compounds into inorganic compounds.


The purification device is composed of primary filter unit, - C band ultraviolet device, degradation collection, ozone generator, filter unit and other equipment and components.


The device adopts five-stage purification mode, and the process flow of the device is shown in Figure 1.


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2、 Technical features


1. Non toxic without any side effects. It is completely beyond the traditional ozone and other air purifiers, and can continuously sterilize and dedust in the presence of people. It can widely intercept and kill all kinds of bacteria in the air. The test shows that the killing rate of Legionella, Staphylococcus aureus, Bacillus subtilis, spore of black variety and natural bacteria is over 99.9%. It can effectively remove the inhalable particles and achieve the cleanliness of 10000-100000.


2. Eliminate the peculiar smell of polluted and harmful gases, accelerate the primary electrons in the electric field, and impact the oxygen molecules in the air. When the energy exceeds the ionization potential of the oxygen molecule, the oxygen molecule ionizes rapidly. The oxygen molecules that lose electrons become positive oxygen ions (O2 +, while the released electrons combine with another neutral oxygen molecule to become negative oxygen ions (O2 -). As a result, the oxygen ions differentiate in two stages and absorb the middle oxygen molecules to form O2 +, O2 -, O2 The ion group with isooxygenation can oxidize the harmful components in polluted air into harmless products and water in a short time;


O2+e(3.6eV)→·O+O


H2O+e(5.09eV)→·OH+HO+·OH→·OH2


The results show that the oxidation potential (2.8ev) of Oh is 35% higher than that of ozone (2.07ev). ·The reaction rate of OH radicals with organic compounds is several orders of magnitude higher. Moreover, the reaction of · OH radical to oxidized pollutants is non selective, which can lead to chain reaction and directly oxidize most harmful substances in polluted air into carbon dioxide and water or minerals. Its mechanism is as follows:


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H2S + · OH → HS + H2O

HS + O2 + O2 ++ O2- → SO3 + H2O

NH3 · OH → NH2 + H2O

NH2 + O2 + O2 ++ O2 →→ NOX + H2O

CH2O + O2 ++ O2 → + · OH → H · COOH + H2O

Practice has proved that most harmful substances in a certain concentration of polluted air can be oxidized and decomposed in a short time, and the conversion rate is above 90% on average.

3. Scope of application

Kraft pulp, oil refining, coking, petrochemical, gas, manure processing, pharmaceuticals, pesticides, synthetic resins, synthetic fibers, rubber, nitrogen fertilizers, nitric acid, coking, manure processing, meat processing, aquatic processing, food ingredients, flavors, livestock processing , Leather, bone glue, paint, solvent, ink printing, garbage disposal, medicine and other industries.



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