EP2654919A1 - Vorrichtung und verfahren zur filtration von fluiden - Google Patents
Vorrichtung und verfahren zur filtration von fluidenInfo
- Publication number
- EP2654919A1 EP2654919A1 EP11784601.4A EP11784601A EP2654919A1 EP 2654919 A1 EP2654919 A1 EP 2654919A1 EP 11784601 A EP11784601 A EP 11784601A EP 2654919 A1 EP2654919 A1 EP 2654919A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filtrate
- gas
- buffer
- outlet
- pressure
- 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- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
- B01D37/04—Controlling the filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/003—Filters in combination with devices for the removal of liquids
- B01D36/005—Liquid level sensing means, e.g. for water in gasoil-filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
- B01D37/02—Precoating the filter medium; Addition of filter aids to the liquid being filtered
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
- B01D37/04—Controlling the filtration
- B01D37/046—Controlling the filtration by pressure measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/20—Pressure-related systems for filters
- B01D2201/202—Systems for applying pressure to filters
Definitions
- the invention relates to a device for filtering fluids, in particular a filter device for beverages such as beer, with at least one filter vessel with a Unfiltratraum with inlet for unfiltrate and a filtrate with filtrate outlet.
- the filter vessel is provided, which is divided by a separation plate or a partition wall in the unfiltered space and the filtrate.
- Filter cartridges generally hang into the unfiltrate space at the partition wall or partition plate.
- the unfiltered material is supplied to the non-filtrate space, passes through a precoat layer forming on or on the filter cartridges and is filtered in this process. Subsequently, the filtered unfiltered filtrate reaches the filtrate as filtrate.
- This process can for example be supported and / or caused by pumps.
- a filter aid such as, for example, kieselguhr
- a filter vessel is realized.
- a filter tank upstream storage container for unfiltered and the filter tank downstream storage tank for filtrate are provided. These are each buffer tanks, which are provided before and after the actual precoat filter inside the filter vessel. This system design is primarily attributable to the fact that the precoat filtration is a sensitive process and because of the buffer tanks, flow and pressure fluctuations are decoupled from the precoat filter.
- the unfiltered storage tank upstream of the filter vessel generally ensures that the unfiltered material is mixed and undergoes volume buffering. In addition, this can be increased if necessary, the reaction time or filter time inside the filter vessel.
- Such storage containers for unfiltered material are designed relatively bulky for the described reasons.
- the storage tank for filtrate so a filter tank downstream of the buffer tank, a simplified functionality.
- this downstream buffer tank generally ensures that the pressure of the filtrate in the outlet is kept substantially constant. That is, the buffer tank provided at this point ensures that despite fluctuating geodetic pressure of the filtrate at the outlet of Filtratraumes no or only insignificant pressure fluctuations are recorded.
- the buffer tank downstream of the filter vessel ensures that the recovered filtrate is typically subjected to the required counter pressure, which prevents degassing.
- C02-containing beverages such as beer and the solubility of CO2 in the product in question depending on the temperature and pressure of the beverage in the example case. For this reason, the so-called release of CO2 from the drink must be prevented.
- the filtrate provided for a subsequent filling process generally has to be pressurized, which is about 1 bar (0.1 MPa) above the saturation pressure of CO2 in the example case.
- This pressure or back pressure is made available inter alia by the filter tank downstream buffer tank and prevents the already mentioned degassing or carbonation on or in the outlet for the filtrate.
- the invention is based on the technical problem of further developing such a device for the filtration of fluids so that the plant-technical expenditure is reduced and a simplification of the process sequence is observed.
- a correspondingly suitable method for operating such a device should be specified.
- a generic device in the invention is characterized in that the filtrate in the filter vessel and / or the connected outlet is also designed as a gas buffer or are.
- the filtrate space therefore assumes a function which is twice or more than one function.
- it ensures that the unfiltered material passing through a filter and in particular precoat filter is stored as filtrate and can be withdrawn from the filtrate space via the outlet.
- the filtrate acts as a quasi-downstream buffer tank or takes over the function of the storage container for the filtrate or the buffer tank usually provided at this point, as already described in detail with reference to EP 1 250 948 B1.
- the filtrate volume is designed and dimensioned so that the filtrate inside the filter vessel can store enough filtrate, so that the volume of the external and the filter tank downstream buffer tank for the filtrate according to EP 1 250 948 B1 as it is displaced in the filter vessel or the filtrate.
- the filtrate space and / or the outlet connected to the filtrate space act as gas buffer and, in this connection, ensure that the beverage and in particular beer in the filtrate space is equipped with the necessary backpressure, so that the previously described degassing or the carbonation is prevented.
- the pressure of the gas buffer in the treatment of beer is adjusted so that it is located about 1 bar (0.1 MPa) above the C0 2 saturation pressure of the beer in the example case.
- the gas or buffer gas of the gas buffer can be regulated to a predetermined pressure, for example the already mentioned pressure in the interior of the filtrate and / or outlet of 1 bar above the saturation pressure of the beverage to be treated, in the example beer.
- the filtrate space typically has, in addition to the outlet for the filtrate, at least one gas connection for the gas supply / gas removal of the buffer gas in question for producing the gas buffer.
- a buffer gas CO 2 is used in the treatment of C0 2 -containing drinks such as beer.
- inert gas in the context of the invention means a reaction-inert gas which does not react with the treated liquids or drinks.
- two or more gas connections are generally provided, namely at least one gas inlet and at least one gas outlet at the filtrate space.
- the gas buffer which forms or predisposes in the interior of the filtrate space is generally arranged above the filtrate in the filtrate space in question. For this reason, at least the gas outlet is found at the top of the filter vessel.
- the filter vessel is equipped with an enlarged in volume compared to the prior art and otherwise conventionally manufactured filter dome in the region of the filtrate.
- This filter dome has two or more gas connections, namely the gas inlet just above a dividing wall between the non-filtrate space and the filtrate space and the gas outlet on the head side of the filter dome.
- a gas pressure adjusting device for adjusting the gas pressure of the gas buffer.
- this gas pressure actuator ensures that the gas pressure is, for example, 1 bar (0.1 MPa) above the saturation pressure for dissolved CO2 in beer, in the event that CO2 is used as the buffer gas.
- the adjustment of the gas pressure takes place in the sense of a regulation.
- the gas pressure adjusting device is advantageously equipped with a pressure reducing valve and a pressure holding valve.
- the pressure reducing valve is generally located in the gas inlet, whereas the pressure holding valve is provided in the gas outlet.
- the pressure reducing valve may ensure that the gas or CO2 is supplied in the example with a certain minimum pressure to the gas inlet. With the help of the pressure holding valve, however, the maximum observed in the filtrate pressure of the buffer gas is given.
- a liquid level adjusting device is provided with the aid of which the filtrate liquid level mirror can be adjusted in the filtrate.
- the filtrate liquid level is generally specified and set in the sense of a regulation. In fact, the liquid level of the filtrate in the filtrate is regulated to a predetermined level.
- the liquid level adjusting device is composed of a liquid level sensor and a filtrate pump.
- the filtrate pump ensures that the filtrate is withdrawn from the filtrate via the outlet.
- the filtrate pump is preferably a frequency-controlled centrifugal pump. With the aid of a control unit, this frequency-controlled centrifugal pump or generally the filtrate pump can be acted upon in such a way that, depending on the values for the liquid level determined by the liquid level sensor, the filtrate pump ensures the controlled or regulated emptying of the filtrate space. In any case, can be set with the help of the control unit in the filtrate, the constant level and observe.
- control unit may in principle also be set up and provided for that with its help, the gas pressure adjusting device ensures the required gas pressure of the buffer gas in the filtrate.
- the gas pressure of the buffer gas is set or regulated to a value predetermined by the control unit.
- the single figure shows a device for the filtration of fluids schematically.
- the fluids to be treated in the exemplary embodiment are C0 2 -containing drinks and in particular beer. This beer is supplied as non-filtrate 1 to the device to be described in detail below.
- a pump 2 is provided in a supply line 3 to a filter vessel 4.
- a metering device 5 is connected to the supply line 3 to the filter vessel 4.
- a filter aid such as diatomaceous earth, meter in a known manner.
- the unfiltered material 1 reaches via the feed line 3 a non-filtrate space 4a of the filter vessel 4.
- the non-filtrate space 4a is separated from a filtrate space 4b by a dividing wall 6.
- filter cartridges hanging in the Unfiltratraum 4a protrude and serve here as a support surface for it or it depositing filter aid and to form a precoat filter layer.
- the non-filtrate 1 must first reach the unfiltrate 4a via an inlet 7 and the filter cartridges located therein, respectively, in general, pass through a filter in order finally to reach the filtrate space 4b as a filtered beverage in the example or filtrate 9.
- the filtrate 9 is withdrawn via an outlet 8.
- the filtrate 4b has a total of increased volume compared to previously used filter vessels 4. This can be attributed to the fact that the filtrate space 4b on the one hand assumes the function of a buffer tank for the filtrate 9 which is typically present in the outlet 8 in the prior art and on the other acts as a gas buffer or additionally has a gas buffer in its interior.
- the filtrate space 4b is composed volumetrically of a filtrate volume 10 indicated in the FIGURE and additionally a gas buffer volume 11.
- the filtrate 4b is equipped in addition to the outlet 8 for the filtrate 9 with two additional gas ports 12, 13 in the example.
- a gas inlet 12 is connected above the dividing wall 6 to the filtrate 4b.
- a buffer gas 14 - in the example C0 2 - enters the filtrate 4b and fills the gas buffer volume 11 from.
- a gas outlet 13 is additionally provided on the filtrate space 4b. Due to the lower specific gravity, the gas buffer volume 11 is arranged above the filtrate volume 10. The gas outlet 13 can be found on the head side of the filter vessel 4 or on the head side of a filter dome defining the filtrate space 4b.
- the filter vessel 4 may be constructed in two parts in total and is composed in the embodiment of a the Unfiltratraum 4a receiving lower part and the already mentioned and the filtrate 4b defining Filterdom together.
- the lower part and the filter dome are connected to each other via the partition 6.
- the gas pressure of the buffer gas 14 in the interior of the filtrate space 4b or the gas pressure of the gas buffer volume 11 can be adjusted.
- the gas pressure adjusting device 15, 16 is composed of a pressure reducing valve 15 in a supply line 17 of the buffer gas 14 to the filtrate 4b and in addition a pressure holding valve 16 in a discharge 18 for the buffer gas 14 together.
- a device 19 for recovering the buffer gas 14 may be provided.
- the two valves 15, 16 ensure that the buffer gas 14 is set in the interior of the filtrate 4b and the pressure of the gas buffer volume 11 to a predetermined value and maintained at this value.
- the pressure reducing valve 15 in the supply line 17 for the buffer gas 14 is dimensioned so that this is supplied at a pressure of more than 1, 5 bar (0.15 MPa).
- the pressure-maintaining valve 16 ensures that the pressure in the gas buffer volume 11 is kept below 1.8 bar (0.18 MPa), so that the pressure of the buffer gas 14 in the interior of the filtrate space 4b and consequently the outlet pressure of the filtrate 9 to values in one Area between 1, 5 and 1, 8 bar (0.15 MPa and 0.18 MPa) is maintained.
- This information is of course only exemplary and not necessarily to be understood. Overall, it is important that the pressure of the buffer gas 14 is located in the interior of the filtrate 4b above the saturation pressure of the beverage to be treated in the example, to avoid degassing.
- liquid level adjusting device 20, 21, 22 In addition to this gas pressure adjusting device 15, 16, a liquid level adjusting device 20, 21, 22 is still provided.
- the liquid level adjusting device 20, 21, 22 essentially has a liquid level sensor 20 and a filtrate pump 21.
- the liquid level sensor 20 measures the fill level of the filtrate 9 in the filtrate chamber 4b or the filtrate volume 10.
- the filtrate pump 21 ensures that the filtrate space 4b is emptied via the outlet 8.
- the liquid level sensor 20 and the filtrate pump 21 are connected in common to a control unit 22.
- the filtrate pump 21 is a frequency-controlled centrifugal pump 21, so that the control unit 22 specifies the pumping capacity of the filtrate pump 21 via the frequency.
- the overall design is such that the liquid level of the filtrate 9 and consequently the filtrate volume 10 are regulated to a predetermined level or to a predetermined volume. This is done with the aid of the liquid level sensor 20, the filtrate pump 21 and finally the control unit 22 constructed control loop.
- the gas pressure adjusting device 15, 16 can be connected to the control unit 22.
- the control unit 22 then additionally ensures that the gas pressure of the gas buffer or the buffer gas 14 in the interior of the filtrate space 4b is adjusted or regulated to a specific value predetermined by the control unit 22 with the aid of the gas pressure adjusting device 15, 16.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Distillation Of Fermentation Liquor, Processing Of Alcohols, Vinegar And Beer (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010055522A DE102010055522B3 (de) | 2010-12-22 | 2010-12-22 | Vorrichtung und Verfahren zur Filtration von Fluiden |
PCT/EP2011/005757 WO2012084098A1 (de) | 2010-12-22 | 2011-11-16 | Vorrichtung und verfahren zur filtration von fluiden |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2654919A1 true EP2654919A1 (de) | 2013-10-30 |
Family
ID=44993525
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11784601.4A Withdrawn EP2654919A1 (de) | 2010-12-22 | 2011-11-16 | Vorrichtung und verfahren zur filtration von fluiden |
Country Status (4)
Country | Link |
---|---|
US (1) | US20130256240A1 (de) |
EP (1) | EP2654919A1 (de) |
DE (1) | DE102010055522B3 (de) |
WO (1) | WO2012084098A1 (de) |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2379848A (en) * | 1940-04-08 | 1945-07-03 | Butler Manufacturing Co | Pressure filter |
NL66671C (de) * | 1942-02-28 | 1900-01-01 | ||
DE965850C (de) * | 1952-05-15 | 1957-06-27 | Ewald Arno Zdansky | Verfahren und Einrichtung zum Filtrieren von Fluessigkeiten |
US2780363A (en) * | 1952-12-22 | 1957-02-05 | Infilco Inc | Apparatus and process for washing diatomite type filters |
US2862622A (en) * | 1955-08-10 | 1958-12-02 | Detrex Chem Ind | Filters |
NO155124C (no) * | 1981-07-16 | 1987-02-18 | Mueller Drm Ag | Gjenvaskbart utfellingsfilter. |
US4436633A (en) * | 1981-08-14 | 1984-03-13 | Robinsky Eli I | Filtration thickening method and apparatus |
EP0245585B1 (de) * | 1986-03-12 | 1990-06-27 | Sapporo Breweries Limited | Filterapparat |
US5114596A (en) * | 1990-10-16 | 1992-05-19 | The Graver Company | Backwash method and apparatus |
US5017241A (en) * | 1990-10-16 | 1991-05-21 | The Graver Company | Backwash method and apparatus |
US5437788A (en) * | 1994-01-10 | 1995-08-01 | Pall Corporation | Backwashing filter assembly |
DE19706578C2 (de) * | 1997-02-20 | 1999-08-19 | Till Gea Gmbh & Co | Druckstoßkompensator und Verfahren zur Konstanthaltung des Fülldrucks einer Produktflüssigkeit |
EP1250948B1 (de) * | 2001-03-21 | 2004-06-09 | Anton Steinecker Maschinenfabrik GmbH | Anschwemmfilter |
AT411386B (de) * | 2002-03-15 | 2003-12-29 | Sauer Klaus | Verfahren und einrichtung zum dämpfen von druckstössen von in einer flüssigkeitsleitung strömenden flüssigkeiten |
WO2006096134A1 (en) * | 2005-03-07 | 2006-09-14 | Esco Process (Asia Pacific) Pte Ltd | Liquid filter system |
-
2010
- 2010-12-22 DE DE102010055522A patent/DE102010055522B3/de not_active Expired - Fee Related
-
2011
- 2011-11-16 EP EP11784601.4A patent/EP2654919A1/de not_active Withdrawn
- 2011-11-16 US US13/993,904 patent/US20130256240A1/en not_active Abandoned
- 2011-11-16 WO PCT/EP2011/005757 patent/WO2012084098A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2012084098A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2012084098A1 (de) | 2012-06-28 |
US20130256240A1 (en) | 2013-10-03 |
DE102010055522B3 (de) | 2012-06-06 |
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