METHOD OF OIL SLUDGE UTILIZATION Russian patent published in 2019 - IPC C02F11/00 C02F1/40 C02F101/32 C08J11/00 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry, namely to processing and recycling of oil-containing raw materials formed at fields. Method of oil sludge utilization includes supply to sludge collector 1 through steam distributor and active nozzles 4 of steam vapor ejectors, into flow of which periodically by means of doser 5 dosed amount of demulsifier is injected, active mixing in the oil sludge, bottom sediment and steam ejector, which fall on the input of hydraulic elevator 6, after which they are captured by the hydraulic elevator and are transported after preliminary treatment to gravitational separator 7 for final processing, wherein steam is injected with pressure control at the ejectors inlet, pressure is determined empirically, below which viscosity of the obtained mixture consisting of oil sludge and bottom sediment together with steam will be sufficient for transportation by hydraulic elevator 6, which is made in form of series-installed slurry pump 9 in sludge trap 1, mechanical replaceable filter 10 and gear pump 11, made with possibility of additional mixing and dispersion of obtained mixture, which before final processing is supplied to steam mixer 12 equipped with steam line 13 with outlet nozzles 14 along the whole bottom, for heating and intensive bubbling mixture by means of steam with temperature of 125–160 °C for supply under pressure to gravitational separator 7, made in the form of centrifugal separator, for separation into steam, water and oil sludge, which is squeezed out with screw press 16 before final utilization.

EFFECT: invention allows to expand functional capabilities by application on deposits with viscous and high viscous oil and to reduce costs for pumping high-viscosity oil products and oil sludge due to intensive heating and additional mechanical dispersion of the steam-and-oil mixture.

1 cl, 1 dwg, 1 ex