METHOD OF OIL-SLIME PROCESSING Russian patent published in 2014 - IPC C10G1/00 B09B3/00 

FIELD: process engineering.

SUBSTANCE: invention relates to processing of oil slimes. Solid oil slimes are processed by separate withdrawal of oil-slime top layer and oil-slime bottom layer from accumulation pit. Oil-contaminated soil is separated from oil-slime bottom layer and fed to biodecomposition site or used as insulation material at domestic and industrial wastes store pit. Both said oil-slime layers are combined or modified by dilution with light oil fraction. Oil-slime thus processed is fed to heat exchanger, heater and forced to shower. Thereafter, it is sprayed. Flue gas flows upward in counter current to oil slime. Oil slime is heated to 120-140°C at the rate of 143-⁺15 degree/sec. Then, heating is performed in compliance with dwg. 2 to 340-350°C at the rate of 10-⁺2 degree/sec. Note here that extraction oil fractions is carried out at final stage of heating. Extraction of oil fractions results in production of tar for road bitumen, light oil fraction to be used as boiler fuel or as additive to hydraulic cleaning stock.

EFFECT: accelerated process, higher yield and efficiency.

1 cl, 3 tbl, 2 dwg, 1 ex