SUBSTRATE GEOMETRY AND MEMBRANE FOR FILTERING Russian patent published in 2015 - IPC B01D63/06 

FIELD: process engineering.

SUBSTANCE: invention relates to filter for fluids. Filtering element (I) comprises hard porous substrate (1) of cylindrical shape with lengthwise central axis (A) including multiple channels (C₁₁, C₂₁, C₂₂…C₃₁, C₃₂…C_n1, C_n2…) for circulation of fluid to be filtered and filtrate collection of periphery of substrate (1). Channels (C₁₁, C₂₁, C₂₂…C₃₁, C₃₂…C_n1, C_n2…) are arranged in substrate (1) parallel with substrate central axis (A) to define at least three filtering zones (F₁, F₂…F_n) arranged concentrically and separated by continuous porous zones (Z₁, Z₂…Z_n-1). Mean width of porous zone (Z₁) located nearby central axis (A) is smaller than that of zone (Z_n-1) located closer to periphery of substrate (1) and in direction from substrate central axis to its periphery and there along.

EFFECT: higher efficiency.

20 cl, 4 dwg, 2 tbl