FIELD: chemistry.
SUBSTANCE: method for purification of gas emission of polycyclic aromatic hydrocarbons, including benz(a)pyrene involves the gas emission exposure to electrical-discharge ultraviolet light in the working wavelength domain at average luminous density 10-3-3·10-1 J/cm2. The gas emission exposure to electrical-discharge ultraviolet light is conducted in the presence of ozone and water in the form of liquid and vapour at gas emission temperature 0°C-250°C with ozone generated by exposing an air flow supplied into a pre-exposure chamber; the gas emission exposure in a gas pipe of the system is conducted by alternating greater 3·10-1 J/cm2 and lesser 10-3 J/cm2 average luminous densities; the gas emission exposure to electrical-discharge ultraviolet light is conducted in the spectral wavelength domain of 310-410 nm.
EFFECT: invention enables increasing a degree of purity of industrial emissions of toxic polycyclic aromatic hydrocarbons and reducing an acid corrosion of the gas pipe of the system.
1 dwg
