FILTER Russian patent published in 2018 - IPC B01D17/22 B01D24/00 

FIELD: oil industry.

SUBSTANCE: invention relates to the oil-water emulsions separating devices and can be used to purify ship oily waters and other oily effluents. Filter contains housing in the form of filled with granules several cylindrical shells, with upper and lower covers, branch pipes for the to be purified oil-water emulsion supply, separated oil products and purified water output, limiting the granular filler metal gratings. As the upper stage filtering charge, double sieved sand with the particles size of 0.5–1.0 mm is used, and as the lower stage filtering charge, spruce wood sawdust with the particles size of 0.5–1.0 mm is used, which has large porosity. Between the sand and sawdust layers there is a gap for the coalesced in the upper stage petroleum products accumulation. In the upper cover annular perforated collector for the purified water supply is installed, which is made in the form of a ring with holes from below, which diameter is gradually increasing with distance from the inlet, and the distance between them decreases, wherein the holes total area must be larger than the collector inlet area.

EFFECT: technical result: increase in the oily waters purification efficiency and degree, possibility of the dissolved petroleum products extraction.

1 cl, 2 dwg