WO2011050825A1 - Dispositif pour séparer des fluides - Google Patents

Dispositif pour séparer des fluides Download PDF

Info

Publication number
WO2011050825A1
WO2011050825A1 PCT/EP2009/007842 EP2009007842W WO2011050825A1 WO 2011050825 A1 WO2011050825 A1 WO 2011050825A1 EP 2009007842 W EP2009007842 W EP 2009007842W WO 2011050825 A1 WO2011050825 A1 WO 2011050825A1
Authority
WO
WIPO (PCT)
Prior art keywords
cross
flow filter
filter module
container
fluid
Prior art date
Application number
PCT/EP2009/007842
Other languages
German (de)
English (en)
Inventor
Gunnar Grim
Original Assignee
Kmpt Ag
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 Kmpt Ag filed Critical Kmpt Ag
Priority to PCT/EP2009/007842 priority Critical patent/WO2011050825A1/fr
Publication of WO2011050825A1 publication Critical patent/WO2011050825A1/fr

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
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
    • B01D33/21—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with hollow filtering discs transversely mounted on a hollow rotary shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
    • B01D33/68—Retarding cake deposition on the filter during the filtration period, e.g. using stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/20—Specific housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2315/00—Details relating to the membrane module operation
    • B01D2315/02—Rotation or turning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2315/00—Details relating to the membrane module operation
    • B01D2315/06—Submerged-type; Immersion type

Definitions

  • the invention relates to an apparatus for treating an output fluid, e.g. the separation of a product fluid from a starting fluid according to the preamble of claim 1 or the preamble of claim 4.
  • Such devices are well known and are used, for example, to concentrate suspensions in the pharmaceutical, food or chemical industries.
  • Another application example is the production of alcohol produced by microalgae which must be separated from an algal broth.
  • Other examples are fermentation broths, which also have to be concentrated or from which the liquid fermentation product is separated off.
  • Devices with dynamic cross-flow filtration have proved to be particularly advantageous with regard to gentle product treatment and low energy consumption.
  • these devices carry two parallel axes each spaced filter discs, wherein the filter discs overlap overlapping. By rotating the axes, a cross-flow is created, which dissolves particles adhering to the filter discs, and the permeate is discharged through the hollow-shaped axes.
  • the starting fluid usually a suspension, a fermentation broth, an algal broth or the like
  • the starting fluid is collected in a reservoir and then circulated through a conduit from a circulation tank. pump, a cross-flow filter device and a cooling unit supplied.
  • a cross-flow filter device In this circuit circulates the output fluid, wherein the product fluid is filled as a permeate from the cross-flow filter device and the starting fluid is concentrated.
  • the invention has for its object to provide a device of the type mentioned, which is characterized by a simple structure and which allows to treat even delicate starting or product fluids gently.
  • cross-flow filter module directly in the reservoir.
  • cross-flow filter module is to be understood at least one axis with a rotatable filter disc arranged thereon;
  • the invention is based on the surprising finding that it is possible to build a system of the type mentioned without a circulation pump. In this case, the recirculation is maintained by the difference in density in the starting fluid, which is generated by the crossflow filter module, and by the rotation of the filter discs, resulting in a uniform concentration in the entire container and no excessive concentration in the filter discs.
  • the container wall may have a mounting bell, on which the cross-flow filter module is suspended.
  • a gas cushion forms in the attachment bell, which prevents the fluid level of the starting fluid (retentate) from rising to the region of the suspension of the crossflow filter module, so that damage to the suspension can be avoided, in particular in the case of aggressive retentates.
  • the cross-flow filter module may also be inserted from above into an open container, e.g. open tank, basin, gutter or channel are hung.
  • an open container e.g. open tank, basin, gutter or channel are hung. This open construction also ensures that the suspension and drive of the cross-flow filter module can be wetted by the starting liquid.
  • the cross-flow filter module may comprise stirring elements, and / or an agitator may be provided in the container.
  • the container can be designed as a reactor vessel for treating the retentate, for example for culturing bacteria, other microorganisms, microalgae, etc.
  • the possibility of a temperature control of the container is preferably provided.
  • the inner volume of the container is significantly larger than the volume of construction of the cross-flow filter module.
  • construction volume of the cross-flow filter module is to be understood as the volume that would enclose an envelope of the filter discs; this corresponds with known cross-flow filter modules about the inner volume of the filter disks enclosing housing.
  • the internal volume of the container is according to the invention at least three times the volume of the cross-flow filter module, preferably ten times or more.
  • Fig. 1 is a schematic representation in section of a first embodiment
  • a device according to the invention comprises a container 1 for receiving the retentate with an inlet 2 and a drain 3 and a removable lid 4.
  • a cross-flow filter module 5 is attached in the container.
  • This cross-flow filter module has two hollow shafts 6, on which hollow filter discs are mounted axially spaced apart. The filter discs overlap between the axes 6.
  • the axles 6 are rotatably suspended in a fixing bell 8, and the inner hollow axles 6 are in fluid communication with a permeate discharge 9. Furthermore, a cooling device 10 is formed in the region of the cross-flow filter module 5 on the container wall. To separate the product fluid, the container 1 is filled with the starting fluid, wherein below the laterally and upwardly closed mounting bell 8, a gas cushion remains, which prevents the fluid level rises to the suspension of the axis 6.
  • the axes and thus the filter discs 7 are set in rotation, and from the starting fluid, the product fluid is filtered out.
  • the rotation of the filter discs and by the resulting density differences in the output fluid in the region of the cross-flow filter module a circulation of the output fluid in the container 1 is ensured.
  • stirring elements may be provided at the lower end of the axles.
  • the pressure required for the filtration results from the gravitational pressure of the spout fluid in the container, wherein the filtration can be additionally assisted by pressurizing the container or by removing the permeate at the permeate outlet line 9 under reduced pressure.
  • Figure 2A corresponds to that of Figure 1, wherein additionally an agitator 11 is provided in the container to assist the circulation and the homogenization of the retentate and to prevent sedimentation within the retentate.
  • FIGS. 2B and 2C differ from that of FIG. 1 only by the height arrangement of the cross-flow filter module or by the flow direction of the fluid in the container, as indicated by the arrows.
  • the crossflow filter module is arranged in a bulge of the container 1.
  • a plurality of cross-flow filter modules can be provided, which are arranged in the periphery of the container, as the cross-sectional top view of Figure 2 G shows.
  • the crossflow filter module 5 is accommodated in a separate housing 12, which is in fluid communication with the container 1 via valves 13, 14. Also in this embodiment, the fluid exchange between the cross-flow filter module and the container takes place only due to the difference in density resulting from the filtration and the flow generated by the rotation of the filter discs.
  • the cross-flow filter module may be additionally provided with stirring elements that support a flow.
  • FIGS. 2E and 2F correspond to those of FIGS. 2B and 2C, whereby, as in FIG. 2D, the cross-flow filter module is arranged in a separate housing.
  • Figure 2H corresponds to the embodiment of Figure 2G with multiple cross-flow filter modules.
  • the separation of the product fluid may be batchwise or continuous. The latter is particularly advantageous if high concentration fluctuations in the starting fluid or the remainder of the reaction are to be avoided.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

L'invention concerne un dispositif pour traiter un fluide de départ, comprenant un module filtre à courant transversal, par exemple pour séparer un fluide de produit. Selon l'invention, le module filtre à courant transversal ne possède pas son propre boîtier, mais peut être disposé dans un contenant dont le volume est considérablement supérieur au volume d'encombrement du module filtre à courant transversal, le rapport entre les volumes pouvant être égal à 3:1, de préférence supérieur ou égal 10 : 1. En variante, le module filtre à courant transversal présente un boîtier qui lui est propre et qui est en communication fluidique avec un contenant, sans pompe intercalée.
PCT/EP2009/007842 2009-11-02 2009-11-02 Dispositif pour séparer des fluides WO2011050825A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2009/007842 WO2011050825A1 (fr) 2009-11-02 2009-11-02 Dispositif pour séparer des fluides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2009/007842 WO2011050825A1 (fr) 2009-11-02 2009-11-02 Dispositif pour séparer des fluides

Publications (1)

Publication Number Publication Date
WO2011050825A1 true WO2011050825A1 (fr) 2011-05-05

Family

ID=42115360

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/007842 WO2011050825A1 (fr) 2009-11-02 2009-11-02 Dispositif pour séparer des fluides

Country Status (1)

Country Link
WO (1) WO2011050825A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4137554A1 (fr) 2021-08-18 2023-02-22 ANDRITZ Separation GmbH Agencement de fermenteur

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19502848A1 (de) * 1995-01-30 1995-06-08 Ulrich Otto Rotationsscherspaltfilter
JPH09108547A (ja) * 1995-10-18 1997-04-28 Hitoshi Masuda 回転式膜分離装置
JPH11216490A (ja) * 1993-01-21 1999-08-10 Hitachi Plant Eng & Constr Co Ltd 有機性廃水の処理装置
EP1702664A2 (fr) * 2000-01-31 2006-09-20 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Installation de traitement de l'eau

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11216490A (ja) * 1993-01-21 1999-08-10 Hitachi Plant Eng & Constr Co Ltd 有機性廃水の処理装置
DE19502848A1 (de) * 1995-01-30 1995-06-08 Ulrich Otto Rotationsscherspaltfilter
JPH09108547A (ja) * 1995-10-18 1997-04-28 Hitoshi Masuda 回転式膜分離装置
EP1702664A2 (fr) * 2000-01-31 2006-09-20 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Installation de traitement de l'eau

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 199727, Derwent World Patents Index; Class D15, AN 1997-292953, XP002585739 *
DATABASE WPI Section Ch Week 199943, Derwent World Patents Index; Class D15, AN 1999-511187, XP002587504 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4137554A1 (fr) 2021-08-18 2023-02-22 ANDRITZ Separation GmbH Agencement de fermenteur

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