METHOD OF CLEANING OIL PRODUCT TANK DRAINAGE WATERS AND DEVICE TO THIS END Russian patent published in 2014 - IPC B01D17/00 

FIELD: process engineering.

SUBSTANCE: invention relates to filters for removal of water, impurities and biological contaminants from oil products. Invention consists in cleaning drainage waters from impurities in centrifugal field by filtration in fluid flow directed against gravity force direction. It comprises cleaning of filter material from separated sediments of impurities by swirling flow of fluid by filtration in said fluid flow in direction aligned with that of gravity forces. Proposed device comprises casing with settler closed by perforated damping cover with at least one inlet, outlet and drain pipes and at least one coalescing filter. Said casing comprises unions for media interface level top and bottom transducers. Solid bottom with drain pipe with swirler is amounted on thrust ring above polymer coalescing filters inside said casing. False bottom is arranged above solid bottom at another thrust ring for drain pipe to pass there through and filter material to be secured thereto by clamp ring. Reflector is attached to solid bottom from below.

EFFECT: higher capacity, longer life.

9 cl, 2 dwg