Trapping of 3,4-benzpyrene in off-gas from oxidized asphalt production by means of water scrubbers
This article determines the carcinogenic hazard of the off-gas on the basis of the content of 3,4-benzpyrene. Detoxification efficiency is rated on the basis of the contents of this hydrocarbon before and after the scrubber. The gas discharged from asphalt production contains carcinogenic polycyclic aromatic hydrocarbons (PAH), one of the main sources of atmospheric pollution by toxic components. The degree of PAH removal by water scrubbers in refineries is investigated. Contaminated waste water, resulting from the treatment of gas to remove harmful substances by passing them through a scrubber, must also be treated. The combined efficiency of the purification functions of the scrubber greatly depends on the quantity of waste water, which can be reduced by recirculating the wash fluid. It is concluded that water scrubbers are best used only for the pretreatment of off-gas from oxidation (usually before thermal afterburning), under the conditions that the discharge of contaminated waste water is either reduced or eliminated.
- Research Organization:
- Novokuibyshevsk Branch, All-Union Sci-Res Inst. of Hydrocarbon Feedstocks
- OSTI ID:
- 6033925
- Journal Information:
- Chem. Technol. Fuels Oils (Engl. Transl.); (United States), Vol. 20:1; Other Information: Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 1, pp. 32-33, January 1984
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ASPHALTS
PRODUCTION
GASEOUS WASTES
SCRUBBING
POLYCYCLIC AROMATIC HYDROCARBONS
REMOVAL
PYRENE
SCRUBBERS
EFFICIENCY
AIR POLLUTION
CARCINOGENS
DETOXIFICATION
HEALTH HAZARDS
OXIDATION
PETROLEUM REFINERIES
PURIFICATION
QUANTITY RATIO
WASTE WATER
AROMATICS
BITUMENS
CHEMICAL REACTIONS
CONDENSED AROMATICS
EQUIPMENT
HAZARDS
HYDROCARBONS
HYDROGEN COMPOUNDS
INDUSTRIAL PLANTS
LIQUID WASTES
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION
POLLUTION CONTROL EQUIPMENT
TAR
WASTES
WATER
040900* - Oil Shales & Tar Sands- Waste management