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Porous carrier, filter membrane and method for preparing porous carrier

A porous carrier and carrier technology, applied in chemical instruments and methods, membranes, ultrafiltration, etc., can solve the problem that tangential removal of clogging cannot be achieved

Active Publication Date: 2009-08-12
TECH AVANCEES & MEMBRANES INDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Particles or molecules penetrating the membrane are now out of reach for tangentially unclogged

Method used

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  • Porous carrier, filter membrane and method for preparing porous carrier
  • Porous carrier, filter membrane and method for preparing porous carrier
  • Porous carrier, filter membrane and method for preparing porous carrier

Examples

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Embodiment Construction

[0027] The porous support according to the present invention is composed of an inorganic material whose transport resistance is suitable for the separation to be achieved. The porous carrier 1 is formed of an inorganic material such as metal oxide, carbon, or metal. in figure 2 In the illustrated embodiment, the porous carrier 1 is in the shape of a tube extending along the longitudinal center axis A, and may also be in a flat shape extending along the center plane. The porous carrier 1 has a polygonal straight-sided section or as figure 2 The example shown also has a circular cross-section.

[0028] The porous carrier 1 has at least one surface 3 facing the fluid to be treated, and the surface 3 corresponds to the surface through which the fluid to be treated flows when only the carrier is used. The carrier 1 is usually combined with the separation layer 5 to form a filter membrane 4. In this case, the fluid to be treated does not flow directly on the surface of the carrier 3 f...

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Abstract

A method for manufacturing a porous carrier (1), a filter membrane and a porous carrier, the porous carrier (1) is used for tangential filtration of a fluid to be treated, the porous carrier has: at least one surface (3) facing the fluid to be treated , the fluid to be treated flows along the designated flow direction; and the extraction surface (1 1 ), the carrier is formed by modifying the initial carrier, the carrier is characterized in that the average lateral porosity of the carrier increases from the surface facing the fluid to be treated to the extraction surface of the filtrate; and along the The flow direction of the treatment fluid, parallel to the surface of the carrier facing the fluid to be treated, is obtained in such a way that the mean longitudinal porosity of the carrier is uniform, partially blocking the initial carrier, whose permeability is reduced compared to the original carrier, and when along the When the flow direction of the fluid to be treated moves parallel to the surface (3) of the carrier towards the fluid to be treated, the permeability of the carrier is consistent.

Description

Technical field [0001] The present invention relates to the technical field of tangential separation using separation elements commonly called filter membranes. These filter membranes are usually made of inorganic materials and contain a porous support and at least one separation layer, and their properties and morphologies are designed to separate molecules or particles contained in the fluid medium to be treated. Membrane separation separates the liquid containing molecules and / or particles into two parts: a filtrate part, which contains molecules or particles that pass through the filter membrane and thus the carrier and the separation layer; and a retention part, which Contains molecules or particles retained by the filter membrane. [0002] More precisely, the subject of the present invention relates to the production of porous media and filter membranes incorporating such media. The filter membrane is a tangible structure that allows selective blocking or passage of the flui...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D63/06B01D71/02B01D61/14C04B38/00B01D67/00B01D69/10
CPCC04B2111/00793B01D71/02B01D67/0088B01D67/0041B01D63/066C04B2111/00801B01D67/0046B01D63/063C04B38/0051B01D63/061B01D2323/283B01D2325/022B01D67/00411B01D69/108C04B35/00
Inventor P·莱斯科舍
Owner TECH AVANCEES & MEMBRANES INDS
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