CN201988339U - Energy-saving ceramic separation membrane - Google Patents
Energy-saving ceramic separation membrane Download PDFInfo
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- CN201988339U CN201988339U CN201120056668XU CN201120056668U CN201988339U CN 201988339 U CN201988339 U CN 201988339U CN 201120056668X U CN201120056668X U CN 201120056668XU CN 201120056668 U CN201120056668 U CN 201120056668U CN 201988339 U CN201988339 U CN 201988339U
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- separation membrane
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Abstract
The utility model discloses an energy-saving ceramic separation membrane which comprises a porous ceramic substrate, wherein a plurality of fluid channels are arranged in the porous ceramic substrate; and a transition layer and a membrane separation layer are prepared on the surface of each fluid channel respectively, and a plurality of raised particles are arranged on the membrane separation layer. Due to the existence of the bulge structure, the membrane flux is remarkably improved, during the preparation of the bulge structure, not only the characteristics of the coating slurry are not required to be changed, but also the surface continuity and the permeability of the membrane are not destroyed and reduced respectively, and furthermore, the energy-saving ceramic separation membrane is simple in production process and less in cost.
Description
Technical field
The utility model relates to a kind of energy-saving ceramic diffusion barrier, belongs to the diffusion barrier technical field.
Background technology
Membrane separation technique has appearred in the eighties of last century 60-70 age, promptly adopts the porous film material of organic polymer or inorganic to realize liquid-solid separation or gas-solid separation process, reaches the purpose that makes fluid media (medium) purify or reclaim solid product.The difference of the filter paper that this membrane filter media and people know, filter cloth or other filter mediums is to have special pore structure, thereby can obtain higher separative efficiency.Can be divided into micro-filtration membrane (membrane aperture is more than 100nm), milipore filter (aperture is less than 100nm) and fine filtering film (aperture is 1-2nm) based on the pore size difference.Wherein, ceramic membrane is the separating medium with screening usefulness that adopts the manufacturing of ceramic powder sintering.Compare with the high polymer diffusion barrier of industrialization early, the speciality of inorganic separating film is that pore-size distribution is narrow, separating property good, and is high temperature resistant, chemically stable, not corroded by organic solvent, bacterium, but soda acid clean, high mechanical properties, indeformable, but high pressure recoil, vapours regeneration, backwash etc.The ceramic membrane resolution element generally is the asymmetric apertures gauge structure for preparing one or more layers on the macropore supporter, the industry-wideization and the marketization be to have the arrange tubular ceramic membrane component of channel design of rule, this multichannel design, can guarantee that membrane component has enough big mechanical strength on the one hand, guarantor unit's volume element has bigger total filter area on the other hand, thereby can improve filtering efficiency and reduce manufacturing cost, reduce occupation area of equipment.Also having some special-shaped ducts (non-circular hole) design, mainly is in order to improve the permeation flux of film material utilization rate and increasing membrane component.These configuration designs as can be seen mainly are to consider from ceramic material and space availability ratio angle, seldom consider to design from user's operating cost angle.
In the actual separation operating practice, solid-liquid mixtures high velocity stream passage in tubular film under the driving of pump of separated, clarification, fluid (film pipe internal pressure 3-5atm, the stream tapping side is 1atm) under the pressure differential effect that pump forms is gone out by fenestra seepage flow.Like this, solids in the fluid will soon form one deck concentration gradient layer on the film surface, the laminar flow layer (being also referred to as boundary-layer) that forms of fluid and solid film skin-friction force in addition, the very difficult dissipation by the back-diffusion mode of concentration gradient that makes the surface go up formation opened, thereby reduced the speed of fluid seepage flow very soon, just reduced the circulation of film.In order to address this problem, the operational usual practice of membranization worker is the crossflow velocity that strengthens fluid, promptly drive the logical filmed passing tube flow at high speed of feed liquid with high power pumps, usually crossflow velocity is 3-7m/s, like this, the thickness of boundary-layer can reduce, and solids are the difficult filter cake that forms on the surface, thereby the thickness of concentration polarization boundary-layer attenuate thereupon, make the filtration long period not have obvious decay.In this filter type, fluid flow direction is vertical with seepage direction, thereby is called cross flow one or cross-flow.Filter differently fully with traditional end-blocking, one of great advantage of this mode of operation is can continued operation, large-scale application.
The utility model content
The purpose of this utility model is for a kind of energy-saving ceramic diffusion barrier being provided, just can forming turbulence state near surface under lower crossflow velocity, thereby can significantly improve circulation, makes separating effect better.
The utility model adopts following technical scheme to achieve these goals:
The energy-saving ceramic diffusion barrier comprises the porous ceramics substrate, is provided with a plurality of logistics corridors in the described porous ceramics substrate, it is characterized in that: have rete on the described logistics corridor inwall.Random arrangement has the projection particle in the rete.
Described energy-saving ceramic diffusion barrier is shaped as planar shaped, tubular or multiple tracks honeycomb ceramics.
The beneficial effects of the utility model:
The utility model is because the existence of raised structures, thereby in passage, just can form turbulence state with low flow rate at fluid, thereby can significantly improve membrane flux, when the preparation rete, neither must change the habit of coating coating slurry, also can not destroy the continuity on film surface and reduce its permeability, and production technology is simple, expense is few.
Description of drawings
Fig. 1 structural representation of the present utility model.
Among the figure 1, the porous ceramics substrate, 2, logistics pipeline, 3, filter course, 4, the projection particle.
The specific embodiment
As shown in Figure 1, the energy-saving ceramic diffusion barrier comprises porous ceramics substrate 1, is provided with a plurality of logistics corridors 2 in the described porous ceramics substrate 1, and with rete 3, random arrangement has projection particle 4 in the rete 3 on logistics corridor 2 inwalls.
Claims (1)
1. an energy-saving ceramic diffusion barrier comprises porous ceramic matrices suitable, is provided with a plurality of logistics corridors in the described porous ceramic matrices suitable, it is characterized in that: with rete, random arrangement has the projection particle in rete on the described logistics corridor inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120056668XU CN201988339U (en) | 2011-03-07 | 2011-03-07 | Energy-saving ceramic separation membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120056668XU CN201988339U (en) | 2011-03-07 | 2011-03-07 | Energy-saving ceramic separation membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201988339U true CN201988339U (en) | 2011-09-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120056668XU Expired - Fee Related CN201988339U (en) | 2011-03-07 | 2011-03-07 | Energy-saving ceramic separation membrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201988339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104837545A (en) * | 2012-12-13 | 2015-08-12 | 3M创新有限公司 | Constructions for fluid membrane separation devices |
-
2011
- 2011-03-07 CN CN201120056668XU patent/CN201988339U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104837545A (en) * | 2012-12-13 | 2015-08-12 | 3M创新有限公司 | Constructions for fluid membrane separation devices |
| CN104837545B (en) * | 2012-12-13 | 2016-10-12 | 3M创新有限公司 | Structure for fluid film segregation apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20150307 |
|
| EXPY | Termination of patent right or utility model |