FILTER ELEMENT, AS WELL AS METHODS FOR ITS MANUFACTURE AND USE Russian patent published in 2016 - IPC B01D27/06 B01D39/14 

FIELD: treatment plants.

SUBSTANCE: invention relates to filtration elements and methods for filtration of contaminated fluid. Fluid flow is introduced in radial direction through filter element designed without core, of porous non-woven band and intermediate tape, close coiled in overlapping manner, and radial fluid flow is turned to axial direction by layer with lower permeability than that of non-woven tape, in order to remove particles of specified size from fluid flow in axial direction of layer with lower permeability. In another version, filtration of fluids is performed by introducing fluid medium flow in radial direction through filter element having density gradient, in order to remove particles of specified size from fluid medium flow, radial fluid flow is redirected into axial direction at specified depth in radial direction, so that fluid flow flows in axial direction in filtering element, and processed fluid from filter element is removed away. Filter is made without core of porous non-woven band spirally wound upon itself in order to produce multiple adjacent overlapping layers to form strips with selected depth in radial direction, and intermediate tape arranged in form of one layer at specified depth in radial direction, with porosity, providing lower permeability than porosity of non-woven tape.

EFFECT: provided filtration of contaminated fluid using filter element, which has layer to change flow direction of contaminated fluid and increase deposits of impurities of specific size.

15 cl, 8 dwg