EP1049525A2 - Systemes de separation, modules de membrane, elements de filtre, et procedes de fabrication d'elements de filtre - Google Patents

Systemes de separation, modules de membrane, elements de filtre, et procedes de fabrication d'elements de filtre

Info

Publication number
EP1049525A2
EP1049525A2 EP99903220A EP99903220A EP1049525A2 EP 1049525 A2 EP1049525 A2 EP 1049525A2 EP 99903220 A EP99903220 A EP 99903220A EP 99903220 A EP99903220 A EP 99903220A EP 1049525 A2 EP1049525 A2 EP 1049525A2
Authority
EP
European Patent Office
Prior art keywords
support plate
separation medium
filter element
separation
bonding layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP99903220A
Other languages
German (de)
English (en)
Inventor
Luis Rios
Tony Alex
Thomas C. Gsell
Michael R. Gildersleeve
Anthony Kamanes
Rasheed Mohammed
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pall Corp
Original Assignee
Pall Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pall Corp filed Critical Pall Corp
Publication of EP1049525A2 publication Critical patent/EP1049525A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/16—Rotary, reciprocated or vibrated modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/08—Flat membrane modules
    • B01D63/081—Manufacturing thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/08—Flat membrane modules
    • B01D63/082—Flat membrane modules comprising a stack of flat membranes
    • B01D63/084—Flat membrane modules comprising a stack of flat membranes at least one flow duct intersecting the membranes

Definitions

  • the present invention relates to vibratory separation systems, membrane modules, filter elements, and other components that may be used in a vibratory separation system and methods for making filter elements that may be used in a vibratory separation system.
  • Separation devices are typically utilized to separate one or more components of a fluid from other components in the fluid.
  • the term "fluid” includes liquids, gases, and mixtures and combinations of liquids, gases and/or solids.
  • a wide variety of common processes are carried out in separation devices, including, for example, classic or particle filtration, microfiltration, ultrafiltration, nanofiltration, reverse osmosis (hyperfiltration), dialysis, electrodialysis, prevaporation, water splitting, sieving, affinity separation, affinity purification, affinity sorption, chromatography, gel filtration, bacteriological filtration, and coalescence.
  • Typical separation devices may include dead end filters, open end filters, cross-flow filters, dynamic filters, vibratory separation filters, disposable filters, regenerable filters including backwashable, blowback and solvent cleanable, and hybrid filters which comprise different aspects of the various above described devices.
  • a common problem in virtually all separation systems is blinding or fouling of the separation medium, such as a permeable membrane.
  • Permeate passing through the separation medium from the upstream side to the downstream side of the separation medium leaves a fluid layer adjacent to the upstream side of the separation medium having a different composition than that of the process fluid.
  • This fluid layer may include components which bind to the separation medium and clog its pores, thereby fouling the separation medium, or may remain as a stagnant boundary or gel layer, either of which hinders transport of the components trying to pass through the separation medium to the downstream side of the separation medium.
  • mass transport through the separation medium per unit time i.e., flux, may be reduced and the inherent sieving or trapping capability of the separation medium may be adversely affected.
  • a filter element in accordance with a still further aspect of the invention, includes a support plate, a separation medium mounted on the support plate and having an inner portion, an intermediate portion and an outer portion, a drainage layer disposed between the separation medium and the support plate in the intermediate portion of the separation medium, and a bonding layer disposed between the separation medium and the support plate in the outer portion of the separation medium to bond the separation medium to the support plate.
  • a filter element in accordance with another aspect of the invention, includes a support plate, a separation medium mounted on the support plate, and a drainage layer disposed between the separation medium and the support plate.
  • the drainage layer has a thickness less than about 0.6 mm.
  • a filter element includes a composite that includes a support plate, a separation medium, and a drainage layer disposed between the support plate and separation medium.
  • the composite is free of a bonding layer.
  • Figure 2 is a top plan view of a vibratory separation assembly of a vibratory separation system of the present invention.
  • the permeate recovery arrangement 500 is coupled to the permeate outlet 110 of the vibratory separation assembly 100 and may include a permeate recovery line 502 which extends from the permeate outlet 110 to a permeate container 504.
  • One or more valves 506 may be coupled to the permeate recovery line 502 to direct the permeate away from the vibratory separation system.
  • pressure sensors 508, 510 and a temperature sensor 512 coupled to the permeate recovery line 502 may also be included in the permeate recovery arrangement 500.
  • the permeate recovery arrangement 500 may include a pump assembly coupled to the permeate recovery line 502 for withdrawing permeate from the vibratory separation assembly 100.
  • This gap 268, which is best illustrated in Figure 5, provides a process fluid flow channel or chamber along the upstream sides of adjacent separation media 262.
  • the inner and outer peripheries of one or both sides of the support plate may be raised and thereby function similarly to the seals 240 and 242.
  • Various methods and materials may be used to bond the surfaces of the inner and outer seals 240 and 242 to the filter elements 122. For example, these surfaces may be welded, brazed, epoxied, or adhered, as disclosed in International Publication No. WO 97/02087.
  • a gasket (or sealant) may be placed between the filter elements and the inner and outer seals or between the filter elements at the inner and outer seals.
  • a flat, annular gasket may be positioned adjacent to the radially inner surface of each outer seal 240 and the radially outer surface of each inner seal 242, and these gaskets are compressed against adjacent filter elements including the separation media, by tightening the bolts of the membrane module.
  • the illustrated support plate 218 includes an outer region beyond the process fluid holes 236, an intermediate region between the process fluid holes 236 and the retentate holes 230, and an inner region within the retentate holes 230.
  • the support plate 218 is preferably of constant thickness over its entire diameter and is preferably completely flat without any height variations on either surface such as grooves, depressions, or projections (neglecting microscopic variations in height which are incidentally formed during the process of manufacture) over the entire intermediate region between the process fluid holes 236 and the retentate holes 230.
  • the support plate 218 may have variations in its thickness or in the height of its surfaces, such as grooves, depressions, projections, or other permeate passages in this region, such variations are less preferred for the operation of this embodiment since radial or lateral drainage of permeate can take place through the drainage layers 219.
  • the surface of the support plate 218 is as smooth and flat as possible, at least in the intermediate region between the process fluid holes 236 and the retentate holes 230, so that the separation medium 262 disposed atop this region will be smooth and flat.
  • a support plate 218 having a constant thickness over its entire diameter, as in the present embodiment, may be advantageous because it makes the support plate 218 more economical to manufacture and makes it possible for the support plate 218 to be very thin.
  • the permeate drainage slots 225 need not extend through the entire thickness of the support plate 218, but when the support plate 218 is thin, it is simpler to form the permeate drainage slots 225 by cutting through the entire thickness of the support plate 218.
  • the number and size of the drainage slots 225 can be selected in accordance with the rate at which the permeate needs to pass into the central retentate passage.
  • the drainage layers 219 can be made of any materials having good edgewise flow characteristics e.g., (low resistance to flow in the direction parallel to the surface of a support plate 218) to enable permeate which has passed through the separation media 262 to readily flow to the permeate drainage slots 225 at the center of the support plate 218.
  • Woven or non- woven fabrics, woven or non- woven meshes, or other materials conventionally used as drainage materials in filters can be employed as the drainage layers 219.
  • Non- woven fabrics are particularly suitable as the drainage layers 219 because they are smoother than meshes, for example, and result in the separation medium 262 having a flatter, more regular surface than when other drainage materials, such as meshes, are employed.
  • the thickness and porosity of the drainage layers 219 can be selected in accordance with the viscosity and desired flow rate of the permeate so as to restrict the pressure drop of permeate flowing through the drainage layers 219 to a desired level.
  • the thickness of the drainage layer is preferably less than 0.6 mm.
  • FIG 8 is a plan view of the drainage layer 219 employed in the present embodiment, with the outline of the support plate 218 on which it is mounted shown in dashed lines.
  • the illustrated drainage layer 219 comprises a non- woven polyester fabric available in a wide range of grades from Reemay, Inc. of Old Hickory, Tennessee under the trade designation REEMAY. It has a generally circular outer periphery and a generally circular hole 235 at its center surrounding the central opening 220 in the support plate 218.
  • the drainage layer 219 may be formed with cutouts 237 surrounding the holes 236, 230 so that in the immediate vicinity of the holes 236, 230, the drainage layer 219 will not be present between the separation medium 262 and the support plate 218.
  • attachment preferably is performed using a heat- bondable bonding layer, such as a bonding layer 241 formed of a non- woven web of multicomponent thermoplastic fibers of the type described in detail in U.S. Patent Application No. 08/388,310 and UK Publication No. 2,297,945, which are incorporated herein by reference.
  • the bonding layer may be of suitable type.
  • the bonding layer may be an adhesive bonded layer or a solvent bonded layer.
  • the multicomponent thermoplastic bonding layer 241 may comprise fibers of at least a first polymer and a second polymer such that the second polymer is present on at least a portion of the surface of the multicomponent fibers and has a melting temperature below the melting temperatures of the first polymer.
  • the multicomponent fibers may comprise at least about 60 weight percent of the first polymer and no more than about 40 weight percent of the second polymer.
  • the particular combination of polymers for the multicomponent fibers may be chosen such that the melting temperatures of the first and second polymers differ sufficiently enough that melting or softening of the second polymer can be effected without adversely affecting the first polymer.
  • the first polymer preferably has a melting temperature at least about 20°C higher, more preferably at least about 50°C higher, than the melting temperature of the second polymer.
  • the second polymer will typically have a melting temperature of about 110°C to about 200°C, more typically about 110°C to about 150°C.
  • suitable multicomponent fibers for use in the web include Celbond T105 and T106 fibers (Hoechst-Celanese, Salisbury, North
  • the bonding layer 241 can have a thickness so as to provide drainage for fluid in the space between the separation medium 262 and the support plate 218.
  • the bonding layer 241 can be made to function as a drainage layer in addition to or instead of the drainage layer 219 employed in the present embodiment.
  • the attachment of the separation medium 262 to the drainage layer 219 and the support plate 218 is preferably effected by subjecting the bonding layer to a temperature above the softening temperature, and possibly above the melting temperature, of the second polymer but below the softening and melting temperatures of the first polymer, the separation medium 262, the drainage layer 219, and support plate 218.
  • the bonding layer is subjected to a temperature sufficient to at least partially soften and possibly melt the second polymer without significantly softening or melting the other components of the filter element.
  • the sealing member 245 fills the interstices of the bonding layer 241, it may come into intimate contact with the separation medium 262 as well. Depending upon the material of which the separation medium 262 is made, the sealing member 245 may also enter into the pores of the separation medium 262. If the drainage layer 219 is present between the separation medium 262 and the support surface in the vicinity of the holes 236 and 230, the sealing member 245 may also flow into and fill the interstices of the drainage layer 219. However, it is generally preferable if the drainage layer 219 is cut away around the holes 236, 230 to minimize the space which must be filled by the sealing member 245.
  • the application of pressure may cause the sealing member 245 to spread radially outwards from the edges of the hole over one or both of the top and bottom surfaces of the support plate 218.
  • the initial height of the sealing member 245 may be the same as or less than the thickness of the support plate 218 at the hole 236, 230 in which it is inserted, with substantially none of the material forming the sealing member 245 flowing outside the hole 236, 230 during the application of heat and pressure to the sealing member 245.
  • the softened portions of the sealing member 245 may remain in the hole (in the form of a pool of softened material, for example) with the bonding layers 241 being forced against or into the softened material by the application of pressure.
  • the extent of the regions in which the sealing members 245 fill the interstices of the bonding layers 241 may vary.
  • each sealing member 245 preferably fills the interstices of the bonding layers 241 which it contacts over substantially the entire area of each of the lengthwise end surfaces of the sealing member 245, but the regions may be smaller than the end surfaces. Preferably, the regions extend continuously around the entire periphery of each end of the hole 249.
  • the solid sealing members 245 can be made of any material which can soften or melt when heated so as to fill the interstices between the fibers of the bonding layer 241 and which, when it solidifies after softening or melting, is preferably without micropores.
  • the softening or melting points of the sealing members 245 are not critical but are preferably above the service temperature of the filter element 122 and are preferably such that the heating required to soften or melt the sealing members 245 does not damage other portions of the filter element 122 subjected to the heating.
  • Thermoplastic polymeric materials are frequently suitable for the sealing members 245.
  • the sealing members 245 are made of a material which softens or melts at or below the temperature to which the bonding layer 241 is heated to adhere it to the separation medium 262 or other member.
  • the second polymer in the bonding layer 241 will typically having a softening temperature which is at least about 20°C lower and preferably at least about 50°C lower than the softening temperature of the first polymer in the bonding layer 241. If the sealing members 245 have a softemng or melting point in the same temperature range as the softening temperature of the second polymer with respect to the softemng temperature of the first polymer, i.e.
  • the stack of components of Figure 9 may then be fed into a conventional laminator having a suitable heating mechanism and nip rolls for applying pressure to the stack.
  • the second polymer component of the bonding layer 241 is softened to adhere to the separation medium 262 and the drainage layer 219 or the support plate 218.
  • at least the portion of the sealing member 245 protruding out of the hole 236, 230 is softened and, under the pressure applied by the nip rolls of the laminator, is forced into the bonding layers 241 abutting its end surfaces to fill the interstices between the fibers of the bonding layers 241 in these regions.
  • FIG. 12 Another embodiment of a membrane module 104B including a plurality of alternative filter elements 122B is shown in Figure 12.
  • the membrane module 104B shown in Figure 12 may be similar to the membrane module 104 shown in Figure 5 except that the filter element 122B includes an additional bonding layer 24 IB disposed between the drainage layer 219 and the support plate 218.
  • the additional bonding layer 24 IB may extend only under the drainage layer 219 or it may be generally coextensive with the original bonding layer 241, as shown in Figure 12. Further, the additional bonding layer 24 IB may have cutouts in the vicinity of the permeate slots 215 so as not to hinder permeate flow from the drainage layer 219 to the permeate conduit 220.
  • each sealing member 245 is preferably arranged to fill the interstices in both bonding layers 241, 241B to form a fluid-tight seal in the vicinity of the process fluid or retentate holes 236, 230.
  • the drainage layer 219 is securely attached to the support plate 218 and is prevented from being lifted off the support plate 218 when the membrane module 104B is vibrated.
  • FIG 13. Another embodiment of a membrane module 104C including a plurality of alternative filter elements 122C is shown in Figure 13.
  • the separation media 262, and hence the drainage layers 219 are secured to the support plates 218 by the gaskets 250, 252 and/or the seals 240, 242.
  • the outer gaskets 252, the inner gaskets 250, and the inner seals 240 are pressed against the outer and inner peripheries of the separation media 262 by the bolts in the membrane module 104D.
  • the separation media 262 may be secured in place on the support plates 218 by the sealing members 245 in the process fluid and retentate holes 236, 230.
  • the filter elements 122D may be thinner and lighter than any of the previous filter elements and the resistance to permeate flow may be very low.
  • the stack of components may then be pressed, for example, between a pair of plates. As the stock is compressed, the liquid material contacts, and may at least slightly penetrate, the separation media 262. At the same time, if the holes 236, 230 are overfilled, the liquid material may be forced radially beyond the edges of the holes, forming a lip over the edges of the holes.
  • the stack of components is preferably maintained under pressure until the liquid material hardens. While the stack may be maintained under pressure, there is preferably no application of heat, the liquid material preferably being a material which cures without the application of heat, e.g.,, at room temperature.
  • the invention includes one or more features of any of the embodiments combined with one or more features of the other embodiments.
  • the sealing member formed from a curable liquid material may be incorporated into a filter element having a bonding layer such as a heat activated bonding layer.
  • different alternative filter elements may be combined in the same membrane module.
  • one or more features of any of the embodiments may be eliminated without departing from the invention.
  • the sealing members 245, 245B may be eliminated from any of the embodiments and, for example, may be replaced with metal islets.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

La présent invention concerne un système de séparation vibratoire présentant un mécanisme d'entraînement en vue d'imprimer un mouvement vibratoire à un module de membrane afin d'améliorer la filtration. Le module de membrane comprend un ou plusieurs filtres empilés, chaque élément de filtre ayant un milieu de séparation. Le mouvement de vibration imprimé au module de membrane génère une couche limite d'écoulement dynamique aux milieux de séparation. Cette couche limite de cisaillement, à son tour, génère une montée, empêchant ainsi que les milieux de séparation soient encrassés.
EP99903220A 1998-01-20 1999-01-20 Systemes de separation, modules de membrane, elements de filtre, et procedes de fabrication d'elements de filtre Withdrawn EP1049525A2 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US7184398P 1998-01-20 1998-01-20
US71843P 1998-01-20
US7204098P 1998-01-21 1998-01-21
US72040P 1998-01-21
PCT/US1999/001192 WO1999036150A2 (fr) 1998-01-20 1999-01-20 Systemes de separation, modules de membrane, elements de filtre, et procedes de fabrication d'elements de filtre

Publications (1)

Publication Number Publication Date
EP1049525A2 true EP1049525A2 (fr) 2000-11-08

Family

ID=26752719

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99903220A Withdrawn EP1049525A2 (fr) 1998-01-20 1999-01-20 Systemes de separation, modules de membrane, elements de filtre, et procedes de fabrication d'elements de filtre

Country Status (5)

Country Link
EP (1) EP1049525A2 (fr)
JP (1) JP2002509014A (fr)
AU (1) AU2329499A (fr)
CA (1) CA2318591A1 (fr)
WO (1) WO1999036150A2 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60221678T2 (de) * 2001-09-20 2008-04-30 Millipore Corp., Billerica Verfahren zur herstellung eines fluidbehandlungsmoduls
EP1622702A1 (fr) * 2003-05-15 2006-02-08 Millipore Corporation Module de filtration
EP2227314B1 (fr) * 2007-10-03 2017-10-25 EMD Millipore Corporation Cartouche de filtration à plaques empilées
DE102008019085A1 (de) * 2008-04-15 2009-10-22 Microdyn - Nadir Gmbh Filterverbundmaterial, Verfahren zu seiner Herstellung sowie aus dem Filterverbundmaterial hergestellte Flachfilterelemente
DE102008049865A1 (de) * 2008-10-01 2010-04-08 Weise Water Systems Gmbh Filtereinsatz und Verfahren zur Herstellung des Filtereinsatzes
EP2508247B1 (fr) * 2011-04-07 2014-12-31 New Century Membrane Technology Co., Ltd. Procédé et appareil pour fabriquer une unité filtrante
EP3620219B1 (fr) * 2018-09-06 2024-05-29 Pall Corporation Élément de filtre et module de filtre le comprenant
CN212680646U (zh) * 2018-10-30 2021-03-12 大荷兰人国际有限公司 过滤设备
CN115212725B (zh) * 2022-07-27 2023-08-18 东风柳州汽车有限公司 滤膜重复利用装置及过滤器
CN115382292A (zh) * 2022-08-18 2022-11-25 杭州科百特过滤器材有限公司 一种过滤膜包

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
YU51378A (en) * 1977-04-04 1982-10-31 Dresser Ind Membrane packing enabling the passing of leaking fluids
US4264447A (en) * 1979-06-26 1981-04-28 Dorr-Oliver Incorporated Ultrafiltration membrane assembly and bonding process therefor
US4576715A (en) * 1981-02-13 1986-03-18 Dresser Industries, Inc Membrane pack and method of making
DE9010071U1 (fr) * 1989-10-17 1990-11-15 Sartorius Ag, 3400 Goettingen, De
CA2160282A1 (fr) * 1995-02-14 1996-08-15 Michael R. Gildersleeve Ensemble a membrane supportee
US6322698B1 (en) * 1995-06-30 2001-11-27 Pall Corporation Vibratory separation systems and membrane separation units

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9936150A3 *

Also Published As

Publication number Publication date
CA2318591A1 (fr) 1999-07-22
AU2329499A (en) 1999-08-02
WO1999036150A3 (fr) 1999-10-28
WO1999036150A2 (fr) 1999-07-22
JP2002509014A (ja) 2002-03-26

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