WO1994015693B1 - Filtration cassette article, and filter comprising same - Google Patents
Filtration cassette article, and filter comprising sameInfo
- Publication number
- WO1994015693B1 WO1994015693B1 PCT/US1994/000428 US9400428W WO9415693B1 WO 1994015693 B1 WO1994015693 B1 WO 1994015693B1 US 9400428 W US9400428 W US 9400428W WO 9415693 B1 WO9415693 B1 WO 9415693B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sheet
- foraminous
- permeate
- filter material
- basin
- Prior art date
Links
- 238000001914 filtration Methods 0.000 title claims abstract 16
- 239000012466 permeate Substances 0.000 claims 67
- 239000000463 material Substances 0.000 claims 57
- 239000012465 retentate Substances 0.000 claims 33
- 210000000614 Ribs Anatomy 0.000 claims 5
- 210000003414 Extremities Anatomy 0.000 claims 4
- 239000004721 Polyphenylene oxide Substances 0.000 claims 3
- 238000004026 adhesive bonding Methods 0.000 claims 3
- 229920003288 polysulfone Polymers 0.000 claims 3
- 239000004593 Epoxy Substances 0.000 claims 2
- 239000000853 adhesive Substances 0.000 claims 2
- 230000001070 adhesive Effects 0.000 claims 2
- 229920002678 cellulose Polymers 0.000 claims 2
- 239000001913 cellulose Substances 0.000 claims 2
- 125000003700 epoxy group Chemical group 0.000 claims 2
- JOYRKODLDBILNP-UHFFFAOYSA-N ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims 2
- 229920001955 polyphenylene ether Polymers 0.000 claims 2
- -1 polypropylene Polymers 0.000 claims 2
- 229920001296 polysiloxane Polymers 0.000 claims 2
- 229920002301 Cellulose acetate Polymers 0.000 claims 1
- 239000000020 Nitrocellulose Substances 0.000 claims 1
- 239000004677 Nylon Substances 0.000 claims 1
- 239000004695 Polyether sulfone Substances 0.000 claims 1
- 239000004698 Polyethylene (PE) Substances 0.000 claims 1
- 239000004743 Polypropylene Substances 0.000 claims 1
- FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2S,3R,4S,5R,6R)-2-[(2R,3R,4S,5R,6S)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2R,3R,4S,5R,6S)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 claims 1
- 150000001408 amides Chemical class 0.000 claims 1
- 230000000875 corresponding Effects 0.000 claims 1
- 150000002148 esters Chemical class 0.000 claims 1
- 239000000706 filtrate Substances 0.000 claims 1
- 229920002313 fluoropolymer Polymers 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 229920001220 nitrocellulos Polymers 0.000 claims 1
- 229920001778 nylon Polymers 0.000 claims 1
- 229920002496 poly(ether sulfone) Polymers 0.000 claims 1
- 229920000728 polyester Polymers 0.000 claims 1
- 229920000570 polyether Polymers 0.000 claims 1
- 229920000573 polyethylene Polymers 0.000 claims 1
- 229920001155 polypropylene Polymers 0.000 claims 1
- 239000000725 suspension Substances 0.000 abstract 2
- 239000002028 Biomass Substances 0.000 abstract 1
- 230000001413 cellular Effects 0.000 abstract 1
- 238000011033 desalting Methods 0.000 abstract 1
- 239000012528 membrane Substances 0.000 abstract 1
- 239000002207 metabolite Substances 0.000 abstract 1
- 102000004169 proteins and genes Human genes 0.000 abstract 1
- 108090000623 proteins and genes Proteins 0.000 abstract 1
Abstract
A filtration cassette (12), of a type comprising membrane filter sheets (104, 108) arranged in a peripherally bonded array of multilaminate character wherein the filter sheets alternate with foraminous (e.g. screen or mesh) sheet elements (102, 106, 110), and a cross-flow filter (200) comprising a multiplicity of stacked filtration cassettes (220) of such type. The filtration cassettes and filter of the invention may be advantageously employed for dewatering of aqueous biomass suspensions, desalting of proteins, removal of secreted metabolites from cellular suspensions, and the like.
Claims
1. A filtration cassette comprising a multilaminate array of sheet elements of generally rectangular and generally planar shape with main top and bottom surfaces, wherein the sheet elements include:
a first foraminous permeate sheet of screen or mesh material, having (i) a polygonal-shaped distribution basin opening at each of opposite end portions of the sheet defining respective inlet and outlet passages, each distribution basin being bounded by generally linear side edges defining corners of the basin at respective intersections of the side edges, and (ii) a permeate passage opening at a side portion of the sheet;
a first sheet of filter material having (i) a polygonal-shaped distribution basin opening at each of opposite end portions of the sheet defining respective inlet and outlet passages, each distribution basin being bounded by generally linear side edges defining corners of the basin at respective intersections of the side edges, and (ii) a permeate passage opening at a side portion of the sheet, wherein the foraminous permeate sheet is bonded to the first sheet of filter material at their respective end and side portions, with their basin openings and permeate passage openings in register with one another and the basin openings being circumscribingly bonded at respective end portions of the first sheet of filter material and the first foraminous permeate sheet, and with a central portion of the first sheet of filter material and the foraminous permeate sheet being unbonded so as, to. define a central portion permeate channel of the foraminous permeate sheet communicating with the permeate passage in the first sheet of filter material and the foraminous permeate sheet; 41
a foraminous retentate sheet of screen or mesh material, having (i) a polygonal-shaped distribution basin opening at each of opposite end portions of the sheet defining respective inlet and outlet passages, each distribution basin being bounded by generally linear side edges defining corners of the basin at respective intersections of the side edges, (ii) a permeate passage opening at a side portion of the sheet, and (iii) a central flow channel of generally rectangular character, extending between and communicating with the distribution basin openings defining the inlet and outlet passages of the foraminous retentate sheet, wherein the foraminous retentate sheet is bonded to the first sheet of filter material at their respective end and side portions, on an opposite side of the first sheet of filter material than the first foraminous permeate sheet, with their basin openings and permeate passage openings in register with one another and the permeate passage opening of the foraminous retentate sheet being circumscribingly bonded to the first sheet of filter material, and with a central portion of the first sheet of filter material and the foraminous retentate sheet being unbonded to permit permeate contacting the foraminous retentate sheet to flow through the first sheet of filter material to the foraminous permeate sheet;
a second sheet of filter material having (i) a polygonal-shaped distribution basin opening at each of opposite end portions of the sheet defining respective inlet and outlet passages, each distribution basin being bounded by generally linear side edges defining corners of the basin at respective intersections of the side edges, and (ii) a permeate passage opening at a side portion of the sheet, wherein the foraminous retentate sheet is bonded to the second sheet of filter material at their respective end and side portions; on an opposite side of the foraminous retentate sheet than the first sheet of filter material, with their basin openings and permeate passage openings in register with one another and the permeate passage opening of the foraminous retentate sheet being circumscribingly bonded to the second sheet of filter material, and with a central portion of the second sheet of filter material and the foraminous retentate sheet being unbonded to 42
permit permeate contacting the foraminous retentate sheet to flow through the second sheet of filter material; and
a second foraminous permeate sheet of screen or mesh material, having (i) a polygonal-shaped distribution basin opening at each of opposite end portions of the sheet defining respective inlet and outlet passages, each distribution basin being bounded by generally linear side edges defining corners of the basin at respective intersections of the side edges, and (ii) a permeate passage opening at a side portion of the sheet, wherein the second foraminous permeate sheet is bonded to the second sheet of filter material at their respective end and side portions, on an opposite side of the second sheet of filter material than the foraminous retentate sheet, with their basin openings and permeate passage openings in register with one another and the basin openings being circumscribingly bonded at respective end portions of the second sheet of filter material and the second foraminous permeate sheet, and with a central portion of the second sheet of filter material and the second foraminous permeate sheet being unbonded so as to define a central portion permeate channel of the second foraminous permeate sheet communicating with the permeate passage in the second sheet of filter material and the second foraminous permeate sheet;
wherein the foraminous retentate sheet of screen or mesh material on each face thereof comprises a series of transversely spaced-apart, longitudinally extending ribs, each extending outwardly from the foraminous retentate sheet to an outer extremity, with the first and second sheets of filter material additionally bonded to the foraminous retentate sheet at rib extremities on respective sides thereof.
2. A filtration cassette according to Claim 1 , wherein the distribution basins each have quadrilateral shape, and wherein each basin comprises:
side edges intersecting at a first corner of the basin defining a first included angle w therebetween of from about 60° to about 110°;
a second corner diagonally opposite said first corner, and the side edges intersecting at such second corner defining a second included angle x therebetween of from about 45° to about 90°;
a third corner transversely adjacent the first corner and longitudinally adjacent the second corner, with the side edges intersecting at the third corner defining a third included angle y therebetween of from about 70° to about 135°;
a fourth corner longitudinally adjacent the first corner and transversely adjacent the third corner, with the sides edges intersecting at the fourth corner defining a fourth angle z therebetween of from about 60° to about 90°.
3. A filtration cassette according to Claim 1 , wherein the distribution basins each have quadrilateral shape, and wherein each basin comprises:
side edges intersecting at a first corner defining a first included angle a therebetween of from about 60° to about 120°;
side edges intersecting at a second corner defining an included angle b therebetween of from about 15° to about 45°;
a third corner transversely, opposite the second corner, with the side edges intersecting at the third corner defining an included angle c therebetween of from about 45° to about 75°; 44
4. A filtration cassette according to claim 1 , wherein each sheet of the cassette comprises a permeate passage opening at each side portion of the sheet.
5. A filtration cassette according to claim 1 , wherein each of the foraminous permeate and retentate sheets have a mesh size characteristic of from about 80 to about 300.
6. A filtration cassette according to claim 1, wherein each of the foraminous permeate and retentate sheets comprises a woven polymeric mesh.
7. A filtration cassette according to claim 6, wherein the woven polymeric mesh comprises a material selected from the group consisting of polyester, polypropylene, nylon, fluorocarbon polymers, polyethylene, and polysulfone.
8. A filtration cassette according to claim 1 , wherein sheets of filter material comprise a material selected from the group consisting of cellulose, polyphenylene oxide, polysulfone, cellulose nitrate, cellulose acetate, polyether amide, polyphenylene oxide/polysulfone blends, mixed esters of cellulose, and polyethersulfone.
9. A filtration cassette according to claim 1 , wherein the ribs are formed of an adhesive bonding material.
10. A filtration cassette according to claim 10, wherein the adhesive bonding material is selected from the group consisting of urethane, epoxy and silicone adhesives.
11. A filtration cassette according to claim 1 , wherein the sheets in the cassette are bonded to one another with an adhesive bonding medium 45
selected from the group consisting of urethane, epoxy and silicone adhesives.
12. A stacked cassette filter including a stacked array of filtration cassettes each comprising a multilaminate array of sheet elements of generally rectangular and generally planar shape with main top and bottom surfaces, wherein the sheet elements include:
a first foraminous permeate sheet of screen or mesh material, having (i) a polygonal-shaped distribution basin opening at each of opposite end portions of the sheet defining respective inlet and outlet passages, each distribution basin being bounded by generally linear side edges defining corners of the basin at respective intersections of the side edges, and (ii) a permeate passage opening at a side portion of the sheet;
a first sheet of filter material having (i) a polygonal-shaped distribution basin opening at each of opposite end portions of the sheet defining respective inlet and outlet passages, each distribution basin being bounded by generally linear side edges defining corners of the basin at respective intersections of the side edges, and (ii) a permeate passage opening at a side portion of the sheet, wherein the foraminous permeate sheet is bonded to the first sheet of filter material at their respective end and side portions, with their basin openings and permeate passage openings in register with one another and the basin openings being circumscribingly bonded at respective end portions of the first sheet of filter material and the first foraminous permeate sheet, and with a central portion of the first sheet of filter material and the foraminous permeate, sheet, being unbonded, so. as to define a central portion permeate channel of the foraminous permeate sheet communicating with the permeate passage in the first sheet of filter material and the foraminous permeate sheet; 46
a foraminous retentate sheet of screen or mesh material, having (i) a polygonal-shaped distribution basin opening at each of opposite end portions of the sheet defining respective inlet and outlet passages, each distribution basin being bounded by generally linear side edges defining corners of the basin at respective intersections of the side edges, (ii) a permeate passage opening at a side portion of the sheet, and (iii) a central flow channel of generally rectangular character, extending between and communicating with the distribution basin openings defining the inlet and outlet passages of the foraminous retentate sheet, wherein the foraminous retentate sheet is bonded to the first sheet of filter material at their respective end and side portions, on an opposite side of the first sheet of filter material than the first foraminous permeate sheet, with their basin openings and permeate passage openings in register with one another and the permeate passage opening of the foraminous retentate sheet being circumscribingly bonded to the first sheet of filter material, and with a central portion of the first sheet of filter material and the foraminous retentate sheet being unbonded to permit permeate contacting the foraminous retentate sheet to flow through the first sheet of filter material to the foraminous permeate sheet;
a second sheet of filter material having (i) a polygonal-shaped distribution basin opening at each of opposite end portions of the sheet defining respective inlet and outlet passages, each distribution basin being bounded by generally linear side edges defining corners of the basin at respective intersections of the side edges, and (ii) a permeate passage opening at a side portion of the sheet, wherein the foraminous retentate sheet is bonded to the second sheet of filter material at their respective end and side portions, on an opposite side of the foraminous retentate sheet than the first sheet of filter material, with their basin openings and permeate passage openings in register with one another and the permeate passage opening of the foraminous retentate sheet being circumscribingly bonded to the second sheet of filter material, and with a central portion of the second sheet of filter material and the foraminous retentate sheet being unbonded to 47
permit permeate contacting the foraminous retentate sheet to flow through the second sheet of filter material; and
a second foraminous permeate sheet of screen or mesh material, having (i) a polygonal-shaped distribution basin opening at each of opposite end portions of the sheet defining respective inlet and outlet passages, each distribution basin being bounded by generally linear side edges defining corners of the basin at respective intersections of the side edges, and (ii) a permeate passage opening at a side portion of the sheet, wherein the second foraminous permeate sheet is bonded to the second sheet of filter material at their respective end and side portions, on an opposite side of the second sheet of filter material than the foraminous retentate sheet, with their basin openings and filtrate passage openings in register with one another and the basin openings being circumscribingly bonded at respective end portions of the second sheet of filter material and the second foraminous permeate sheet, and with a central portion of the second sheet of filter material and the second foraminous permeate sheet being unbonded so as to define a central portion permeate channel of the second foraminous permeate sheet communicating with the permeate passage in the second sheet of filter material and the second foraminous permeate sheet;
wherein the foraminous retentate sheet of screen or mesh material on each face thereof comprises a series of transversely spaced-apart, longitudinally extending ribs, each extending outwardly from the foraminous retentate sheet to an outer extremity, with the first and second sheets of filter material additionally bonded to the foraminous retentate sheet at rib extremities on respective sides thereof.
13. A stacked cassette filter according to Claim 13, wherein the stacked array contains a number X of filter sheets, 0.5X foraminous retentate sheets, and 0.5X + 1 foraminous permeate sheets. 48
STATEMENT UNDER ARTICLE 19
Please replace pages 32-39 of the International Patent Application with the new enclosed pages 32-39 enclosed herewith.
In the enclosed new substitute pages 32-39, the claims have been variously revised in claims 1, 10, and 13 to better recite the claimed invention.
Claim 9 of the claims originally filed in this application has been canceled and the limitation thereof has been introduced in claim 1 in the new substitute pages of claims. Correspondingly, prior claims 10-14 have been revised on the enclosed new substitute claims pages as re-numbered claims 9-13. Orientation-specific language and clarifying numbering changes ("first...permeate sheet" and "second...permeate sheet") have been introduced in claims 1 and 13. With the cancellation of claim 9 previously on file, and introduction of new claim 9 corresponding to prior claim 10, claim 9 as introduced in the enclosed substitute pages has been revised to depend from claim 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/003,518 US5342517A (en) | 1987-10-02 | 1993-01-12 | Filtration cassette article, and filter comprising same |
| US003,518 | 1993-01-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1994015693A1 WO1994015693A1 (en) | 1994-07-21 |
| WO1994015693B1 true WO1994015693B1 (en) | 1994-08-18 |
Family
ID=21706237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1994/000428 WO1994015693A1 (en) | 1993-01-12 | 1994-01-12 | Filtration cassette article, and filter comprising same |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US5342517A (en) |
| WO (1) | WO1994015693A1 (en) |
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| WO1986000237A1 (en) * | 1984-06-18 | 1986-01-16 | Permutit - Boby Limited | Fluid separation cells and spacers for use in these |
| DD229603A1 (en) * | 1984-12-14 | 1985-11-13 | Medizin Labortechnik Veb K | MEMBRANE FILTER PLATE |
| DE3529175A1 (en) * | 1985-08-14 | 1987-02-19 | Gft Ingenieurbuero | DEVICE FOR SEPARATING MIXED MEANS OF THE PERVAPORATION METHOD |
| US4801381A (en) * | 1986-06-16 | 1989-01-31 | Niesen Lawrence J | Ultrafiltration apparatus |
| US4867876A (en) * | 1987-10-02 | 1989-09-19 | Kopf Henry B | Filter plate, filter plate element, and filter comprising same |
| US4882050A (en) * | 1987-10-02 | 1989-11-21 | Kopf Henry B | Filter plate, filter plate element, and filter comprising same |
| US4956085A (en) * | 1987-10-02 | 1990-09-11 | Kopf Henry B | Filter plate, filter plate element and filter comprising same |
| US5049268A (en) * | 1987-10-02 | 1991-09-17 | Kopf Henry B | Filter plate, filter plate element, and filter comprising same |
| US5232589A (en) * | 1987-10-02 | 1993-08-03 | Kopf Henry B | Filter element and support |
| DE4028379A1 (en) * | 1990-09-07 | 1992-03-12 | Seitz Filter Werke | FILTRATION MODULE AND FILTRATION DEVICE FOR SEPARATING AND FILTRATING FLUIDS IN THE CROSSFLOW PROCESS, AND METHOD FOR PRODUCING THE FILTRATION MODULE |
| US5096582A (en) * | 1990-09-25 | 1992-03-17 | Millipore Corporation | Tangential flow filtration apparatus |
| US5217612A (en) * | 1992-06-30 | 1993-06-08 | Poly-Plating, Inc. | Apparatus for diffusion dialysis |
-
1993
- 1993-01-12 US US08/003,518 patent/US5342517A/en not_active Expired - Lifetime
-
1994
- 1994-01-12 WO PCT/US1994/000428 patent/WO1994015693A1/en active Application Filing
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