CN101433807B - Method for optimizing filtering quality of metal porous membrane tube - Google Patents
Method for optimizing filtering quality of metal porous membrane tube Download PDFInfo
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- CN101433807B CN101433807B CN200810232584XA CN200810232584A CN101433807B CN 101433807 B CN101433807 B CN 101433807B CN 200810232584X A CN200810232584X A CN 200810232584XA CN 200810232584 A CN200810232584 A CN 200810232584A CN 101433807 B CN101433807 B CN 101433807B
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- metal porous
- porous membrane
- metallic porous
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Abstract
The invention provides a method for optimizing the filtering quality of a metallic porous membrane tube. A metallic porous membrane layer with a smaller pore size is prepared on the inner wall of a metallic porous tube basal body with a larger pore size, and the thickness of the metallic porous membrane layer is controlled in terms of H=6Dp+Dm, wherein Dp is more than 0.2Dm and is less than or equal to Dm, H is the thickness of the metallic porous membrane layer with the unit of micrometer, Dp is the powder average grain size of the metallic porous membrane layer with the unit of micrometer, and Dm is the medium flow average pore size in the metallic porous tube basal body with the unit of micrometer. The method can achieve that a metallic porous material not only has smaller medium flow average pore size but also has higher relative air transmission coefficient to the maximum extent, optimizes the relation between the medium flow average pore size and the relative air transmission coefficient of the metallic porous membrane and the thickness of the membrane layer, and realizes the requirement of high precision and large permeance on the metallic porous membrane in the application processes of filtration and separation.
Description
Technical field
The present invention relates to a kind of method, be specifically related to a kind of thicknesses of layers and optimized method of filtering quality of metal porous membrane tube of one or more layers metal porous membrane tube at the metal surface plated metal.
Background technology
Usually metal porous membrane is to be made of the rete of matrix with one deck or which floor different aperture, and the aperture of matrix is bigger, mainly is to guarantee that material has certain intensity and big transit dose.Relative matrix aperture, the aperture of rete is smaller, and thickness is also thinner, in 10～500 mu m ranges, mainly is the effect of playing flow average pore size in the raising generally.Relative and the traditional metal polyporous material of the metal polyporous material of this structure has higher filtering accuracy and bigger through performance in the isolated by filtration application process.But the thickness of rete directly affects the middle flow average pore size and the through performance of metal porous membrane, and generally speaking, the thickness of rete is thick more, and the middle flow average pore size of metal porous membrane is more little, but through performance will descend; The thickness of rete is thin more, and the middle flow average pore size of metal porous membrane is big more, but through performance will be big more.Therefore, exist the thickness an of the best to make metal porous membrane in the isolated by filtration process, both have less middle flow average pore size, have bigger through performance again.Certainly, the powder size of preparation porous rete also will have certain scope, if the granularity of powder is excessive, the metal porous membrane air transmission coefficient of preparation is bigger, but filtering accuracy will descend, if powder size is too small, the metal membrane filter precision of preparation increases, but air transmission coefficient also can reduce.Therefore, the particle mean size for preparing the metal film powder is also had certain scope, this scope is exactly smaller or equal to flow average pore size in the metal porous matrix, and greater than flow average pore size in 0.2 times the metal porous matrix, and powder size distributes continuously.Only under a such condition, pass through to optimize strainability the best of the metal porous membrane of preparation.For example in GB GB/T6886, the porous material of filtering accuracy 5 μ m (efficient is 99.9%), air transmission coefficient is 18m relatively
3/ m
2KPah, the filter efficacy of material is very low.Germany GKN company adopts wet-milling jet deposition (wet powder spraying) film technique, and the relative air transmission coefficient when the metal porous membrane tube filtering accuracy of preparation is 3 μ m (efficient is 98%) is 68m
3/ m
2KPah, it is very obvious that strainability improves.But the middle flow average pore size and the thicknesses of layers of this metal porous membrane tube do not appear in the newspapers.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, provide a kind of guarantee metal polyporous material both had less in the flow average pore size time, have the method for the optimizing filtering quality of metal porous membrane tube of higher relative air transmission coefficient again.To realize that metal porous membrane is filtering, separating high accuracy in the application process, big this demand of transit dose.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of method of optimizing filtering quality of metal porous membrane tube, the metal porous rete of preparation one deck smaller aperture due on the metal porous pipe matrix inwall of larger aperture, the thickness that it is characterized in that described metal porous rete is according to H=6D
p+ D
mControl, 0.2D
m＜D
p≤ D
m, wherein, H is the thickness of described metal porous rete, unit is μ m; D
pBe the powder mean particle sizes of described metal porous rete, unit is μ m; D
mBe flow average pore size in the described metal porous pipe matrix, unit is μ m.
The powder size of described metal porous rete distributes continuously.
The present invention compared with prior art has the following advantages: optimization method of the present invention can farthest realize metal polyporous material both had less in the flow average pore size time, has higher relative air transmission coefficient again, optimized the relation between the middle flow average pore size of metal porous membrane, relative air transmission coefficient and the thicknesses of layers, realized that metal porous membrane is filtering, separating high accuracy in the application process, big this demand of transit dose; Filtration, separation, fluid that metal porous membrane tube after the optimization is applied to fields such as petrochemical industry, the energy, environmental protection, food, pharmacy distribute.
Below by drawings and Examples, the present invention is described in further detail.
Description of drawings
Fig. 1 is the microscopic structure picture of unoptimizable structural metal porous rete.
Fig. 2 is the microscopic structure picture of an embodiment of the present invention product.
Fig. 3 is the pressure drop and the flow curve schematic diagram of another embodiment of the present invention product.
Among the figure: A-the present invention the optimize structure pressure drop and the flow curve of metal porous membrane, the pressure drop and the flow curve of the general structural metal of B-perforated membrane.
The specific embodiment
A kind of method of optimizing filtering quality of metal porous membrane tube, the metal porous rete of preparation one deck smaller aperture due on the metal porous pipe matrix inwall of larger aperture, the thickness of described metal porous rete is according to H=6D
p+ D
mControl, 0.2D
m＜D
p≤ D
m, wherein, H is the thickness of described metal porous rete, unit is μ m; D
pBe the powder mean particle sizes of described metal porous rete, unit is μ m; D
mBe flow average pore size in the described metal porous pipe matrix, unit is μ m.And the powder size of metal porous rete distributes continuously.
Embodiment 1
With middle flow average pore size is 14.8 μ m, and ventilative relatively is 126m
3/ m
2The 316L stainless steel metal antipriming pipe of KPah adopts the centrifugal deposition technology to prepare the 316L powder of stainless steel porous rete that particle mean size is 14.5 μ m as basal body pipe, according to optimizing formula H=6D
p+ D
m, preparation thickness is the metal porous rete of 100 μ m.Through behind the thermal sintering, the middle flow average pore size of utilizing FBP-IV type porous material tester to detect metal porous membrane is 8.4 μ m, and air transmission coefficient is 102m relatively
3/ m
2KPah.The metal porous membrane filtration characteristic that employing is optimized structure is good, and recoil is cleaned easily, and actual application value is good.The microscopic structure picture of its metal particle perforated membrane as shown in Figure 2.
Embodiment 2
The flow average pore size is 10.8 μ m in the employing, and ventilative relatively is 120m
3/ m
2The 316L stainless steel metal antipriming pipe of KPah adopts the centrifugal deposition technology to prepare the 316L powder of stainless steel porous rete that particle mean size is 10.5 μ m as basal body pipe, according to optimizing formula H=6D
p+ D
m, preparation thickness is the metal porous rete of 74 μ m.Through behind the thermal sintering, the middle flow average pore size of utilizing FBP-IV type porous material tester to detect metal porous membrane is 7.6 μ m, and air transmission coefficient is 98m relatively
3/ m
2KPah.
Embodiment 3
The flow average pore size is 10.8 μ m in the employing, and ventilative relatively is 120m
3/ m
2The 316L stainless steel metal porous of KPah adopts the centrifugal deposition technology to prepare the 316L powder of stainless steel porous rete that particle mean size is 4.3 μ m as basal body pipe, according to optimizing formula H=6D
p+ D
m, preparation thickness is the metal porous rete of 36 μ m.Through behind the thermal sintering, the middle flow average pore size of utilizing FBP-IV type porous material tester to detect metal porous membrane is 6.4 μ m, and air transmission coefficient is 86m relatively
3/ m
2KPah.The pressure drop of its metal porous membrane and flow curve are as shown in Figure 3.
Claims (2)
1. the method for an optimizing filtering quality of metal porous membrane tube, adopt the centrifugal deposition technology to prepare the metal porous rete of one deck smaller aperture due on the stainless steel metal antipriming pipe matrix inwall of larger aperture, the thickness that it is characterized in that described metal porous rete is according to H=6D
p+ D
mControl, 0.2D
m＜D
p≤ D
m, wherein, H is the thickness of described metal porous rete, unit is μ m; D
pBe the powder mean particle sizes of described metal porous rete, unit is μ m; D
mBe flow average pore size in the described metal porous pipe matrix, unit is μ m.
2. the method for a kind of optimizing filtering quality of metal porous membrane tube according to claim 1 is characterized in that the powder size of described metal porous rete distributes continuously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810232584XA CN101433807B (en) | 2008-12-05 | 2008-12-05 | Method for optimizing filtering quality of metal porous membrane tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810232584XA CN101433807B (en) | 2008-12-05 | 2008-12-05 | Method for optimizing filtering quality of metal porous membrane tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101433807A CN101433807A (en) | 2009-05-20 |
| CN101433807B true CN101433807B (en) | 2011-05-11 |
Family
ID=40708536
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|---|---|---|---|
| CN200810232584XA Expired - Fee Related CN101433807B (en) | 2008-12-05 | 2008-12-05 | Method for optimizing filtering quality of metal porous membrane tube |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102941022B (en) * | 2012-12-14 | 2014-09-03 | 西北有色金属研究院 | Preparation method of foam-metal-based micro-filtration membrane |
| CN111111318B (en) * | 2019-12-04 | 2023-12-12 | 成都易态科技有限公司 | Porous film and method for producing same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5782960A (en) * | 1996-03-18 | 1998-07-21 | Mitsubishi Jukogyo Kabushiki Kaisha | Hydrogen separation member |
| US6158507A (en) * | 1998-07-08 | 2000-12-12 | Rouse; William T. | Well screen |
| CN1686599A (en) * | 2005-03-18 | 2005-10-26 | 华南理工大学 | Porous non layer boundary gradient metal film pipe and its preparation method |
| JP2006265076A (en) * | 2005-03-25 | 2006-10-05 | National Institute Of Advanced Industrial & Technology | Method for purifying/separating hydrogen |
-
2008
- 2008-12-05 CN CN200810232584XA patent/CN101433807B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5782960A (en) * | 1996-03-18 | 1998-07-21 | Mitsubishi Jukogyo Kabushiki Kaisha | Hydrogen separation member |
| US6158507A (en) * | 1998-07-08 | 2000-12-12 | Rouse; William T. | Well screen |
| CN1686599A (en) * | 2005-03-18 | 2005-10-26 | 华南理工大学 | Porous non layer boundary gradient metal film pipe and its preparation method |
| JP2006265076A (en) * | 2005-03-25 | 2006-10-05 | National Institute Of Advanced Industrial & Technology | Method for purifying/separating hydrogen |
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| CN101433807A (en) | 2009-05-20 |
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Granted publication date: 20110511 Termination date: 20211205 |
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