Shoes in the production process need injection molding, bonding and other process steps, so it will inevitably be volatile VOCs exhaust gas, this gas is not only pungent but also a great degree of harm to the human body, today we take inventory of the most commonly used domestic system What are the shoes exhaust gas treatment methods?
First, shoe factory VOCs exhaust gas treatment technology
1, the combustion method applies to flammable or pyrolytic substances, can not recover useful substances, but can recover heat;
2. Absorption method is applicable to exhaust gas with higher concentration, lower temperature and higher pressure VOCs;
3. The condensation method is suitable for organic vapors with an exhaust gas volume fraction of 10-2 or more, and is often used as a pretreatment for other methods. The condensation method has good removal efficiency above 5000 ppm and is generally applied to solvent recovery.
4. Although the application range of absorption method is 250 ~ 10000ppm, but only for a small part of the volatile organic compounds with better water solubility; adsorption method in the field of air pollution control;
5. Adsorption method, although it has strong selectivity, can effectively separate the mixture that is difficult to be separated from other processes, and can effectively remove low-level toxic and harmful substances and can be widely used, but the scope of application of activated carbon adsorption is 200~10000ppm, and the intake air concentration needs to be Above 1000ppm, the control equipment can have higher processing efficiency; at the same time, the choice of adsorbent is also very particular. It should be considered that those adsorbents are more suitable. Commonly used adsorbents include activated carbon, activated alumina, silica gel, and zeolite molecular sieve. Adsorption resin, etc.; and these adsorbents are often easy to saturate, desorption is very troublesome, often need to replace or add adsorbent regularly, usually more troublesome maintenance.
Second, the shoe exhaust VOCs treatment process:
Shoe-making exhaust VOCs → pretreatment equipment (dust particle removal filter, atomization spray tower, vapor separation equipment, etc.) → low-temperature plasma decomposition exhaust gas purifier / UV light deodorization catalytic catalyst exhaust gas purifier / plasma UV light deodorization exhaust gas purification → high row of three, low-temperature plasma decomposition exhaust gas purifier / plasma UV light deodorant exhaust gas purifier works:
1. The pulsed high-frequency high-pressure plasma power supply and the dual-media tooth plate discharge device are mainly used to generate high-concentration ions in the form of tip discharge. Plasma is a kind of condensed matter, and its high-energy electrons can instantaneously break through the air and exhaust gas molecules within milliseconds, generating a series of differentiation and cracking reactions, resulting in high concentration, high strength, high energy activity freedom. Base and various electrons, ions, etc., will undergo a series of elementary physicochemical reactions when colliding with the molecules in the exhaust gas of the engine, and produce a variety of active radicals and ecological oxygen in the reaction process, ie atomic oxygen generated by ozone decomposition. . Active free radicals can effectively destroy the nucleic acids and proteins in various viruses and bacteria, making them unable to undergo normal metabolism and biosynthesis, resulting in their death; while eco-oxygen can quickly decompose or reduce organic odor gas to low levels. Molecularly innocuous substances; In addition, with the help of the polymerization and adsorption of ions and objects in the plasma, the fine organic exhaust gas particles as small as submicron level can be effectively treated by adsorption and sedimentation.
2, using a special high-energy UV UV light beam irradiation of odorous gases, cracking the molecular bonds of odorous gases, degradation and transformation into low-molecular chemicals, such as carbon dioxide and water and other substances.
3, the use of high-energy ozone decomposition of oxygen molecules in the air to produce free oxygen, the active oxygen, because the free oxygen carries the positive and negative electrons, so it needs to combine with oxygen molecules, and then produce ozone, so that the free state of pollutant molecules and ozone Oxidation combines small molecules with harmless or less harmful compounds. Such as CO2, H2O and so on. UVO2 → OO* (active oxygen) OO2 → O3 (ozone).
4, efficient odor removal: can effectively remove volatile organic compounds (VOCs) and a variety of bad odor, deodorant efficiency up to 99%.
5, no need to add any substances: only need to set the corresponding exhaust duct and exhaust power.
Fourth, UV light deodorizing catalytic purifier works:
1.Using a special high-energy UV UV light beam to irradiate the odorous gas, cracking the molecular bonds of odorous gases, and degrading them into low-molecular chemicals such as carbon dioxide and water.
2. The use of high-energy ozone to decompose oxygen molecules in the air to produce free oxygen, ie, active oxygen, which is required to combine with oxygen molecules due to the imbalance of positive and negative electrons carried by free oxygen, and thus to generate ozone, so that pollutant molecules in the free state and ozone Oxidation combines small molecules with harmless or less harmful compounds. Such as CO2, H2O and so on. UVO2 → OO* (active oxygen) OO2 → O3 (ozone).
3.Using a special photocatalyst to catalyze filter cotton, under the irradiation of U-UV light, synergistically catalyze the reaction of air, generate a large amount of ozone, carry out a synergistic oxidative decomposition reaction on odorous gases, and degrade and convert odorous gas substances into low molecular compounds, Water and carbon dioxide, so as to achieve deodorization and kill bacteria.
4, efficient odor removal: can effectively remove volatile organic compounds (VOCs) and a variety of bad odor, deodorant efficiency up to 99%.
5, no need to add any substances: only need to set the corresponding exhaust duct and exhaust power.
6, adaptable: can adapt to high concentrations, atmospheric, can work 24 hours a day, stable and reliable operation.
Vde Diagonal Cutter Pliers,Insulation Diagonal Cutting Pliers,Custom Diagonal Cutting Pliers,1000V Diagonal Cutting Plier
Shanghai Countool In't Trading Co.,ltd , https://www.countool.com