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Ozone Removal in Industrial Waste Gas Emissions

Painting & Spraying Exhaust: Painting, dipping and other coating processes are commonly used in metal and non-metal product manufacturing industries. The exhaust of painting is derived from the volatilization of organic solvents and thinners during painting. The main components of spray paint exhaust gas are volatile organic compounds such as acetone, butanol, xylene, toluene, ethyl acetate, and butyl acetate. The requirements for the collection and treatment of paint exhaust gas are high. The paint mist is removed efficiently in advance, and the solvent exhaust gases (VOCs) are subsequently purified. Due to the certain temperature, the exhaust gas such as dipping paint and spray-drying is treated by catalytic oxidation.

Printing & Coating Exhaust: The printing process mainly generates ink volatile exhaust gas, and the coating process mainly generates solvent volatile exhaust gas. The coating material contains a large amount of organic solvents such as benzene, toluene, ethyl acetate, formaldehyde, acetone and other volatilization to form a high concentration of complex organic waste gas. The waste gas is mostly generated in a high-temperature drying tunnel. The main characteristics are high temperature, high concentration, and complex components. Adopt catalytic oxidation for treatment, and consider the waste heat recovery to drying process as a whole.

Chemical Industry Exhaust: Chemical waste gas comes from toxic and harmful gases emitted by chemical plants in chemical production. The composition of chemical waste gas produced by different chemical production industries varies greatly. Chemical waste gas is generally divided into the following three categories: (1) sulfur-containing compounds, such as hydrogen sulfide, thiols, dimethyl sulfur, thioethers, and sulfur-containing heterocyclic compounds; (2) nitrogen-containing Compounds, such as ammonia, amines, nitriles, nitro compounds, and nitrogen-containing heterocyclic compounds; (3) Carbon, hydrogen or carbon, hydrogen, and oxygen compounds (lower alcohols, aldehydes, fatty acids, etc.). The exhaust gas emission system of the petrochemical industry usually has a large air volume of 20,000-200,000 m3 / h, which is a low-concentration, non-recycling waste gas, which is usually treated by a catalytic combustion process.

Plastic & Rubber Exhaust: The main components of plastic exhaust gas are polymer monomers volatilized during the thermal processing of particles such as plastic and plastic. Due to the complex composition of plastic and plastic, the exhaust gas mainly contains ethylene, propylene, styrene, acrylic acid Butadiene and other olefinic plastic polymer monomers, but the concentration is generally low and the air volume is large.

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