EP4263017A2 - Verfahren zur reinigung eines filtermoduls und filtermodul zu dessen durchführung - Google Patents
Verfahren zur reinigung eines filtermoduls und filtermodul zu dessen durchführungInfo
- Publication number
- EP4263017A2 EP4263017A2 EP21840627.0A EP21840627A EP4263017A2 EP 4263017 A2 EP4263017 A2 EP 4263017A2 EP 21840627 A EP21840627 A EP 21840627A EP 4263017 A2 EP4263017 A2 EP 4263017A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter
- filter head
- axis
- fluid
- head
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
- B01D65/027—Cleaning of other parts of the apparatus than the membrane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/21—Specific headers, end caps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/20—By influencing the flow
Definitions
- the invention relates to a method for cleaning a filter module and a filter module for carrying it out.
- filter modules In order to maintain continuous filter operation despite the occasional failure of a filter, several filter modules can be used in parallel, which feed the filtrate into a central collection line. As a result, the amount of filtrate can be increased at the same time.
- Various filter systems are known which, for example, filter fluids for industrial purposes and drain the filtered fluid again.
- a filter system is disclosed, for example, in WO 2013/048801 A1.
- This includes a filter module assembly comprising a container with a filter cartridge disposed therein and a collector coupled to one end of the container, the head including a housing with an open top end and a bottom end and an end cap.
- the filter module assembly allows for a manifold assembly used to transfer liquids to and from a To promote filter system that includes several such modules. Disadvantages of existing solutions for filter cleaning, however, are that they are based on the principle of backwashing, i.e. the complex reversal of the flow direction and the use of filtrate for rinsing the filter against the main filter direction. To do this, the filtering process must be interrupted and contaminated fluid must be removed and disposed of. These complex cleaning steps reduce the efficiency of the filter process and increase the costs of the filter process.
- the object of the invention is to provide a cleaning method and a filter module for carrying it out, with which the filter module can be cleaned efficiently and cost-effectively.
- the fluid to be filtered is preferably a liquid, in particular water.
- the first, second and third axes referred to below are arranged such that the second axis is perpendicular to the first axis and the third axis is perpendicular to both the first axis and the second axis at the same time.
- a method according to the invention for cleaning a filter module using a filter module has the following steps. First, a filter module having a filter head with two filter head openings is provided. Fluid is then directed into the filter head via a first filter head opening. A part of the fluid is then led out of the filter head via a second filter head opening.
- the method is characterized in that after fluid has been fed into the filter head, the fluid is partially swirled in the filter head.
- the turbulence of the fluid in the filter head results in the advantage that an intensive fluid flow is developed in a large part of the filter head, as a result of which the dead volume is minimized. This is accompanied by the fact that deposits of foreign particles are minimized.
- By directing a portion of the fluid out of the filter head existing in the fluid is eliminated Foreign particles are continuously guided out of the filter head. This also minimizes the deposit and accumulation of foreign particles.
- the fluid can be conducted with the aid of fluid lines.
- the movement of the fluid can be generated, for example, with the help of a pump for liquids and with the help of a compressor for gases.
- the line control can take place, for example, with the aid of valves and/or a valve device with a control unit.
- the designations first filter head opening and second filter head opening belonging to the filter head openings relate only to the method step carried out with the respective filter head opening. It is therefore also possible to arrange the filter module in such a way that the previously second filter head opening is now used as the first filter head opening and vice versa.
- the turbulence of the fluid in the filter head can essentially take place continuously about an axis of rotation parallel to the third axis. Accordingly, a flow that is essentially constant within a plane spanned by the first axis and the second axis is generated.
- the fluid it is possible for the fluid to be swirled in such a way that a flow or partial flow is formed in which the fluid is also moved along the third axis.
- Such turbulence makes it possible to also remove foreign particles that have settled on the ends of the filter head located along the third axis.
- the turbulence of the fluid to take place in such a way that smaller, discontinuous turbulences are formed in the flow edge region, ie on the wall of the filter head. With such turbulence, foreign particles are more effectively prevented from accumulating on the wall of the filter head.
- a targeted turbulence of the fluid in the filter head can be achieved by any flow-changing structural geometry elements. These can be changes in cross section, corners or edges, for example. Suitable structural geometry elements can be round, rounded off or pointed, for example.
- the amount of turbulence in the fluid can also be controlled with the general flow rate, i.e. with the rate at which fluid is supplied. With an increase in the flow velocity, a more intensive turbulence of the fluid can be achieved and vice versa.
- foreign particles are also removed from the filter head by the linear flow of the fluid.
- the linear part of the flow and its turbulent part have a mutually complementary or synergistic effect. For example, foreign particles that are present in the turbulent part of the flow can merge into the linear part and thus be continuously guided out of the filter head.
- the filter module also has a filtrate area and before part of the fluid is routed out of the filter head via a second filter head opening, another part of the fluid is routed from the filter head into the filtrate area.
- the fluid after the fluid has been directed into the filter head via a first filter head opening and before the fluid is swirled in the filter head, the fluid is accelerated along a path connecting the filter head openings.
- the path on which the acceleration takes place can be a straight line.
- any form of path is suitable which at least does not adversely counteract acceleration. Accordingly, among other things, elliptical or hyperbolic path shapes and other continuous curves are also suitable.
- the acceleration of the fluid can be caused, among other things, geometrically, for example by a narrowing of the cross section or by an increase in pressure, for example by means of a pump or by means of a compressor.
- the filter head parts are said to be impermeable to fluids if they are absolutely tight, but also if they are essentially—that is, almost—tight.
- first and second belonging to the filter head parts only refer to a sequence used in the method step carried out. It is therefore also possible to carry out the method in such a way that the formerly second filter head part is now used as the first filter head part and vice versa.
- the filter module also has a second filter head with two filter head openings, while fluid is conducted into the first filter head via a first filter head opening, fluid is conducted into the second filter head via a first filter head opening of the second filter head, after fluid is passed through a first filter head orifice is directed into the second filter head is partially swirled in the second filter head, and while a portion of the fluid is directed out of the first filter head via a second filter head orifice, a portion of the fluid is directed out of the second filter head via a second filter head orifice of the second filter head led out.
- the part of the fluid that is routed out of a filter head is routed back into a filter head via a first filter head opening after it has been routed out.
- the fluid can be returned to the filter head from which it was previously discharged.
- a second filter module having a filter head with two filter head openings is provided. Furthermore, after part of the fluid has been led out of a filter head of the first filter module via a second filter head opening, the fluid led out of a filter head of the first filter module is led into the filter head of the second filter module via a first filter head opening of the filter head of the second filter module. The fluid is then partially swirled in the filter head of the second filter module. Subsequently, part of the fluid over a second filter head opening of the filter head of the second filter module led out of the filter head of the second filter module.
- the fluid after the fluid has been routed out of the filter head of the second filter module, it is routed back into a filter head via a first filter head opening.
- the second filter module also has a second filter head with two filter head openings and, after part of the fluid has been routed out of a filter head of the first filter module via a second filter head opening, the fluid routed out of a filter head of the first filter module is routed through a first filter head opening of the second filter head of the second filter module passed into the second filter head of the second filter module. Thereafter, the fluid is partially swirled in the second filter head of the second filter module. A portion of the fluid is then directed out of the second filter head of the second filter module via a second filter head opening of the second filter head of the second filter module. Subsequently, after the fluid has been conducted out of the second filter head of the second filter module, it is again conducted via a first filter head opening into a filter head.
- a further aspect of the invention relates to a filter module having a filter head with two filter head openings.
- the filter module is characterized in that a first Filter head opening and a second filter head opening are arranged in series along a first axis, the first axis passing through the center point of the first filter head opening and through the center point of the second filter head opening.
- the filter module is further characterized in that an inner filter head cross-section perpendicular to the first axis along the first axis increases starting from the first filter head opening first along the second axis and then decreases along the second axis up to the second filter head opening.
- the filter module is further characterized in that the filter head is closed at its ends located along the second axis and at a first of its two ends located along the third axis, and the filter head at a second of its ends located along the third axis opening.
- first and second associated with the filter head openings and other components only relate to an arrangement of the respective filter head opening or component. It is therefore also possible to arrange the filter module in such a way that the formerly second filter head opening is now used as the first filter head opening and vice versa. In further configurations, it is also possible for a filter module to have a plurality of first filter head openings or first components of the same type and a plurality of second filter head openings or second components of the same type. This increases the flexibility of the filter head and it can be used more universally for a larger number of different filter and filter cleaning processes.
- the filter module is aligned in such a way that the first axis and the second axis lie in a substantially horizontal plane.
- the statements along an axis or in a plane mean that these are arranged or aligned with or without a spacing parallel to the reference axis or reference plane.
- Parallel means essentially parallel, with a maximum deviation of 10%.
- This deviation can be continuous, ie in the sense of an angular deviation. However, it can also be discontinuous, ie partially smaller or larger.
- the opening arranged at a second end of the filter head located along the third axis can extend completely over the entire cross-section parallel to the plane spanned by the first axis and the second axis. However, the opening can also only extend over parts of the cross section mentioned.
- the opening is particularly preferably designed in such a way that the fluid, when it is conducted via the opening from the filter head into a filtrate area, is only introduced into the filter elements, ie no unfiltered fluid is conducted past the filter element.
- This can be achieved in particular in that the opening is adapted to the attached filter element or the attached filter elements.
- the filter head can have multiple openings.
- the inner edge of the filter head runs partially elliptically in the plane spanned by the first axis and the second axis.
- An elliptical shape or curve is defined in relation to the inner edge of the filter head described above and in relation to other shapes or curves described below as any shape or curve that has radial, toroidal and/or elliptical parts. This also includes shapes and curves that deviate slightly from the ideal geometric shapes or curves.
- part of the flow is laminar. In this way, a continuous inflow and outflow of fluid is made possible.
- the filter head cross-section decreases along the first axis first along the second axis before it increases along the second axis.
- the fluid is allowed to be accelerated before a part thereof is swirled.
- the described reduction in the size of the filter head cross section and also other reductions in size described below can be continuous, but also have a partial enlargement as long as the entrance cross-sectional area is larger than the exit cross-sectional area.
- the inner edge of the filter head runs partially elliptically in the plane spanned by the first axis and the second axis in the region of the reduction in the filter head cross section, which takes place before the enlargement of the cross section taking place along the second axis.
- the elliptical shape is defined according to the definition above.
- the filter head cross section first decreases along the first axis starting from the first filter head opening along the third axis and then increases up to the second filter head opening along the third axis.
- the described enlargement of the filter head cross section and also further enlargements thereof described below can run continuously, but also have a partial reduction as long as the inlet cross-sectional area is smaller than the outlet cross-sectional area.
- the inner edge of the filter head is partially elliptical in the region of the reduction taking place along the third axis.
- part of the flow is laminar. In this way, a continuous inflow and outflow of fluid is made possible.
- the filter head also has two filter head parts, the filter head parts each extending from the first filter head opening to the second filter head opening reach, and the filter head parts are fluid-tightly separated from one another along the first axis between the first filter head opening and the second filter head opening.
- the fluid-impermeable separation can be formed, among other things, by means of separate separating elements, but also by corresponding bulges, projections or walls of the filter head.
- the filter module also has a filtrate area, the filtrate area being connected to the filter head at the second end of the filter head located along the third axis.
- the filtrate area can have one filter element or several filter elements. These are preferably membrane filters and particularly preferably hollow fiber membrane filters.
- the filter module in the context of filter cleaning processes, it is also possible to use it for the filtration of fluids.
- the filter module also has a second filter head equivalent to the first filter head, the filtrate region being connected to the second filter head at the second end of the second filter head located along the third axis.
- a second filter head equivalent to a first filter head is preferably similar and more preferably identical to the first filter head.
- the second end of the second filter head, located along the third axis, corresponds to the end having the opening.
- the closed end of the filter head is dome-shaped along the third axis.
- the closed end of the filter head is also considered to be dome-shaped if only parts of it are designed as a dome or as part of a dome. Any curved shape with a single vertex is considered dome-shaped.
- a further aspect of the invention relates to a filter module arrangement consisting of at least two filter modules.
- the filter module arrangement is characterized in that the filter modules are arranged one behind the other and connected to one another in such a way that fluid can first be routed into a filter head of a first filter module and then into a filter head of a second to n-th filter module.
- FIG. 1a shows a schematic representation of a filter module arrangement according to the invention for cleaning a filter module as a sectional view in a plane spanned by a first axis and a second axis.
- FIG. 1b shows a schematic representation of a method according to the invention for cleaning a filter module as a sectional view in a plane spanned by a first axis and a third axis.
- FIG. 2a shows a schematic representation of a filter head of a filter module according to the invention with flow lines as a sectional view in a plane spanned by a first axis and a second axis.
- FIG. 2b shows the filter head shown in FIG. 2a with two filter head parts and with flow lines.
- FIG. 2c shows the filter head shown in FIG. 2a with two filter head parts and with filter head cross sections.
- FIG. 3a shows a schematic representation of a filter head of a filter module according to the invention with flow lines as a sectional view in a plane spanned by a first axis and a third axis.
- FIG. 3b shows the filter head shown in FIG. 3a with filter head cross sections.
- FIG. 4a shows a schematic representation of a filter module according to the invention in a plane spanned by a first axis and a third axis.
- FIG. 4b shows a schematic representation of a filter module arrangement according to the invention in a plane spanned by a first axis and a third axis.
- FIG. 5 shows a schematic representation of a filter head of a filter module according to the invention as a sectional view in a plane spanned by a second axis and a third axis.
- FIG. 1a shows a filter module arrangement 300 according to the invention as a sectional view in a plane spanned by the first axis 410 and the second axis 420.
- Two filter heads 210 arranged one behind the other with respect to the first axis 410 are shown, each belonging to separate filter modules 200 .
- the fluid flow is represented by the arrows running through the filter heads 210 .
- the main flow 130 which is represented by horizontal arrows, runs along the first axis 410.
- each Eddy flow 140 represented by an elliptical, closed arrow.
- the turbulent flows 140 each rotate about an axis of rotation parallel to the third axis 430--shown for example in FIG. 1b.
- FIG. 1b shows a method according to the invention for cleaning a filter module 100 as a sectional view in a plane spanned by the first axis 410 and the third axis 430.
- Three filter modules 200 are shown, each of which has two filter heads 210 and a filtrate area 220 , both filter heads 210 being connected to the filtrate area 220 .
- the fluid 110 is first divided. Then part of the fluid 110 is routed into the first filter head 210 of the first filter module 200 and another part of the fluid 110 is routed into the second filter head 210 of the first filter module 200 .
- a further portion of the fluid 110 is conducted from the first filter head 210 and the second filter head 210 of the first filter module 200 to the first filter head 210 and the second filter head 210 of the second filter module 200, respectively, and then to the first filter head 210 and the second Filter head 210 of the third filter module 200 passed.
- From the filter heads 210 of the first filter module 200, second filter module 200 and third filter module 200 another further part of the fluid 110 is conducted into the filtrate area 220 in each case. Subsequently, the other further parts of the fluid 110 are each brought together in the filtrate areas 220 and led out of the filtrate areas 220 .
- the other further parts of the fluid 110 led out of the filtrate regions 220 are brought together as filtrate 120 outside of the filter modules 200 and then fed back to the beginning of the process as recirculation 150 .
- the first filter heads 210 may be the top filter heads 210 along the third axis 430 . Accordingly, the filter heads 210 located below along the third axis 430 would be the second filter heads 210. However, the opposite case is also possible.
- a filter head 210 of the filter module arrangement 300 shown in FIG. 1a is shown schematically as a sectional view in a plane spanned by the first axis 410 and the second axis 420. Flow lines are also shown entering the filter head 210 along the first axis 410 first via a first filter head opening 212 and then exiting the filter head 210 substantially via a second filter head opening 212 .
- the turbulent flows 140 already shown in FIG. 1a are also shown in FIG. 2a.
- the filter head 210 shown in FIG. 2a is shown in FIG. 2b.
- two filter head parts 214 are shown which are separated from one another in a fluid-tight manner.
- the turbulent flows 140 already shown in FIG. 2a remain essentially unaffected by the separation of the filter head 210, whereas the main flow 130 is weakened by the reduction in the flow area, which is represented by a correspondingly reduced number of flow arrows.
- the filter head 210 shown in FIG. 2a is shown in FIG. 2c.
- Five filter head cross-sections 211 are shown in succession along the first axis 410, which are shown in FIG represent inner dimensions parallel to the second axis 420 through the plane spanned by the first axis 410 and the second axis 420 .
- the filter head cross section 211 first decreases along the first axis 410 and then increases. In this way, a larger third filter head cross section 211 is achieved than at the first end of the filter head 210 along the first axis 410.
- the filter head cross section 211 then decreases again and ultimately increases again.
- the first and last filter head cross section 211 and the second and fourth filter head cross section 211 are each of the same size.
- a filter head 210 is shown schematically as a sectional view in a plane spanned by the first axis 410 and the third axis 430.
- the filter head 210 is first reduced along the first axis 410 and then enlarged again along the third axis 430, which is shown in FIG. 3b with three corresponding filter head cross sections 211.
- the reduction and the enlargement each take place in the region of the filter head 210 which is at the top with respect to the third axis 430 and each run essentially elliptically.
- the flow lines begin at the first filter head opening 212 along the first axis 410 and extend to the second filter head opening 212 along the first axis 410.
- the flow lines follow the outer edge of the filter head 210, i.e. are corresponding bulged downward with respect to the third axis 430 . This deflection of the flow lines from a straight line is attenuated downwards with respect to the third axis 430 .
- FIG. 4a shows a filter module 200 according to the invention in a plane spanned by the first axis 410 and the third axis 430.
- the filter module 200 has two filter heads 210 which are each connected to a filtrate area 220 .
- FIG. 4b shows a filter module arrangement 300 according to the invention in a plane spanned by the first axis 410 and the third axis 430.
- This consists of three filter modules 200, as shown in FIG. 4a and arranged one behind the other along the first axis 410.
- the header areas 210 of the second filter module 200 are also connected to the header areas 210 of the third filter module 200, respectively. with the inside
- the method shown in FIG. 1b for cleaning a filter module 100 can be carried out.
- FIG. 5 shows a filter head 210 of a filter module 200 according to the invention as a sectional view in a plane spanned by the second axis 420 and the third axis 430.
- the filter head 210 has an opening 216 at the bottom end along the third axis 430 .
- the opening 216 extends completely over the end of the filter head 210 which is spanned by the second axis 420 and is the lower end with respect to the third axis 430.
- a circular filter head opening 212 arranged centrally with respect to the second axis 420 is also shown.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- External Artificial Organs (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020134427.9A DE102020134427A1 (de) | 2020-12-21 | 2020-12-21 | Verfahren zur Reinigung eines Filtermoduls und Filtermodul zu dessen Durchführung |
| PCT/EP2021/087132 WO2022136460A2 (de) | 2020-12-21 | 2021-12-21 | Verfahren zur reinigung eines filtermoduls und filtermodul zu dessen durchführung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4263017A2 true EP4263017A2 (de) | 2023-10-25 |
Family
ID=79316547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21840627.0A Pending EP4263017A2 (de) | 2020-12-21 | 2021-12-21 | Verfahren zur reinigung eines filtermoduls und filtermodul zu dessen durchführung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20240050903A1 (de) |
| EP (1) | EP4263017A2 (de) |
| CN (1) | CN116635127A (de) |
| DE (1) | DE102020134427A1 (de) |
| WO (1) | WO2022136460A2 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3776562D1 (de) | 1986-09-12 | 1992-03-12 | Memtec Ltd | Hohlfaserfilterpatrone und -verteiler. |
| EP0525096B1 (de) * | 1990-04-20 | 1998-10-21 | Memtec Limited | Modulare, mikroporöse filteranlagen |
| US6007723A (en) * | 1995-06-15 | 1999-12-28 | Toray Industries, Inc. | Apparatus for processing fluid and method for producing separated fluid |
| EP3381534B1 (de) * | 2005-11-15 | 2021-05-05 | Donaldson Company, Inc. | Flüssigkeitsfiltervorrichtungen |
| ITPD20080095A1 (it) * | 2008-03-28 | 2009-09-29 | Graziano Barbieri | Struttura di testata per dispositivi di filtraggio acqua di tipo pulente, autopulente e simili |
| SG11201401089PA (en) | 2011-09-30 | 2014-04-28 | Evoqua Water Technologies Llc | Improved manifold arrangement |
| EP3113864B1 (de) * | 2014-03-07 | 2018-09-12 | Koch Membrane Systems, Inc. | Gehäuseanordnung und filtriermodul zur filterung einer flüssigkeit |
| KR101760210B1 (ko) * | 2016-03-29 | 2017-07-20 | 엘지전자 주식회사 | 정수장치 및 정수장치가 구비된 냉장고 |
-
2020
- 2020-12-21 DE DE102020134427.9A patent/DE102020134427A1/de active Pending
-
2021
- 2021-12-21 EP EP21840627.0A patent/EP4263017A2/de active Pending
- 2021-12-21 CN CN202180086976.3A patent/CN116635127A/zh active Pending
- 2021-12-21 WO PCT/EP2021/087132 patent/WO2022136460A2/de not_active Ceased
- 2021-12-21 US US18/268,249 patent/US20240050903A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022136460A2 (de) | 2022-06-30 |
| US20240050903A1 (en) | 2024-02-15 |
| CN116635127A (zh) | 2023-08-22 |
| WO2022136460A3 (de) | 2022-08-18 |
| DE102020134427A1 (de) | 2022-06-23 |
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Owner name: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH |