METHOD OF OILY WASTES PROCESSING Russian patent published in 2015 - IPC B01D17/04 C10L1/00 C10G35/04 

FIELD: oil and gas industry.

SUBSTANCE: oily wastes are heated and subjected to primary separation with the extraction of oil-contaminated water and mechanical impurities. The received partially dewatered oily wastes are mixed up with a diluter and subjected to repeated separation with the production of an oil concentrate and additional quantity of oil-contaminated water and mechanical impurities. The oil concentrate is subjected to fractioning together with vapours of gasoline and diesel fraction stabilisation as well as with vapours of thermal conversion, in result a sulphurous hydrocarbon gas, an unstable gasoline fraction, the diluter, an unstable diesel fraction and bottom fractions are obtained. The sulphurous hydrocarbon gas is treated from hydrogen sulphide with the receipt of a fuel gas and commercial sulphur. The unstable gasoline fraction is stabilised with the receipt of commercial gasoline and stabilisation vapours. The unstable diesel fraction is subjected to catalytic stabilisation by hydrogenation and stabilised with the receipt of commercial marine fuels and stabilisation vapours. The bottom fractions are subjected to thermal conversion with the receipt of vapours and heavy residue used as a power-generating fuel. Oil-contaminated water is treated with the receipt of partially clean water and oily wastes, which are sent for mixing up with a raw material, as well as oil-contaminated mechanical impurities, which are processed in the mixture with the oil-contaminated mechanical impurities received at previous stages into road-building materials.

EFFECT: method allows continuous treatment excluding the output of a non-commercial product, improvement of the quality of the commercial product, improvement of industrial and environmental safety, improved labour conditions; the method may be used in the oil refining industry for non-waste processing of emulsion and emulsion suspended oily wastes.

5 cl, 1 dwg