WO2021074404A1 - Système de filtre-presse - Google Patents

Système de filtre-presse Download PDF

Info

Publication number
WO2021074404A1
WO2021074404A1 PCT/EP2020/079250 EP2020079250W WO2021074404A1 WO 2021074404 A1 WO2021074404 A1 WO 2021074404A1 EP 2020079250 W EP2020079250 W EP 2020079250W WO 2021074404 A1 WO2021074404 A1 WO 2021074404A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
filter press
press system
plate
chamber
Prior art date
Application number
PCT/EP2020/079250
Other languages
German (de)
English (en)
Inventor
Stefan GODER
Johann Zeller
Original Assignee
Klinkau Gmbh + Co. Kg
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 Klinkau Gmbh + Co. Kg filed Critical Klinkau Gmbh + Co. Kg
Publication of WO2021074404A1 publication Critical patent/WO2021074404A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/12—Filter presses, i.e. of the plate or plate and frame type
    • B01D25/164—Chamber-plate presses, i.e. the sides of the filtering elements being clamped between two successive filtering plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/003—Filters formed by clamping together several filtering elements or parts of such elements integrally combined with devices for controlling the filtration
    • B01D25/007—Filters formed by clamping together several filtering elements or parts of such elements integrally combined with devices for controlling the filtration by pressure measuring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/12—Filter presses, i.e. of the plate or plate and frame type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/12—Filter presses, i.e. of the plate or plate and frame type
    • B01D25/21—Plate and frame presses
    • B01D25/215—Construction of the filter plates, frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/28—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating
    • B01D25/282—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating for drying
    • B01D25/285—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating for drying by compression using inflatable membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/143—Filter condition indicators
    • B01D35/1435—Filter condition indicators with alarm means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/54—Computerised or programmable systems

Definitions

  • the present invention relates to a filter press system having a plurality of filter plates.
  • Such filter press systems are known in various embodiments, as a rule, several filter plates are clamped together in a filter press or in a filter tower, so that a chamber, also called a filter chamber, is formed between the individual filter plates.
  • Such filter presses are used in particular in the industrial sector for separating solid and liquid components of a medium to be filtered.
  • the range of application of such filter press systems is diverse, in particular such filter press systems are used in the food industry or in the chemical industry, but also in other areas.
  • a suspension is usually pressed into a chamber or filter chamber via an inlet and / or outlet area; the suspension is then usually filtered through a filter cloth lying on the membrane and / or on a chamber plate, the solids being filtered through the filter cloth the chamber or filter chamber are retained, so that a so-called filter cake is formed.
  • the filtrate freed from the solids is led out of the system.
  • a pressure medium can be applied to the membranes, for example, so that they extend from an edge region of the chamber or filter chamber into this filter chamber and towards one another, so that the filter cake is compressed and then removed with moisture. It is pointed out at this point that filter presses can be produced in different embodiments and with different variants.
  • WO 2017/059956 discloses such a filter press system with several filter elements, a plate frame and a filter medium, such a filter press having an electromagnetically operating sensor for determining the dielectric constant of a film terkuchens is provided for determining a water content and / or a conductivity value.
  • claims 2 to 13 relate to particularly advantageous embodiments of the filter plate system according to the invention.
  • the invention also relates to a filter plate according to claim 14, claims 15 and 16 relate to particularly advantageous embodiments of the filter plate according to the invention according to claim 14.
  • the filter press system comprises a plurality of filter plates which are designed in such a way that they form at least two chambers, also called filter chambers, in the operating state.
  • the individual filter plates are typically stacked, with a larger number of filter plates preferably being stacked so that several chambers or filter chambers are created in a filter press system.
  • the filter press system comprises at least one sensor for each chamber, preferably a pressure sensor, which is arranged and designed so that it, directly or indirectly, a prevailing pressure in an associated or assigned chamber or a force resulting from this pressure or a can measure or determine deformation resulting from this pressure.
  • a pressure sensor which is arranged and designed so that it, directly or indirectly, a prevailing pressure in an associated or assigned chamber or a force resulting from this pressure or a can measure or determine deformation resulting from this pressure.
  • the filter press system is designed so that it can be connected to a monitoring system, the filter press system being designed so that the measurement results of the sensor or sensors can be transmitted to the monitoring system.
  • the filter press system preferably also comprises such a monitoring system.
  • the filter press system according to the invention has the advantage that the service life of such filter press systems can be significantly increased in a relatively simple and inexpensive manner can, without fundamentally changing the structure and materials of the components used, in particular the special filter plates used.
  • the filter plates are often influenced by non-uniform operating conditions in the individual chambers, which can be attributed to different causes, for example clogging or partial clogging of suspension inlets, or also due to differences in the filter cloths used, which may also be caused by incorrect operation or the use of different filter cloths.
  • Other causes can be, for example, dirty filter surfaces or accidental overfilling of the chamber when using membrane filter plates.
  • these situations can be detected in good time by means of the sensors, so that operation can be stopped or interrupted, for example, or the operation of the filter press system can be continued with changed operating parameters, for example the overall pressures that are too low and therefore low Lead to loads on the filter plates.
  • corresponding information can also be given to the operating personnel, for example by means of optical and / or acoustic displays or warning signals, so that the corresponding parameters can be checked and, if necessary, interference factors can be eliminated.
  • a filter press system is therefore made available that can have a significantly longer service life without the filter plates themselves having to be changed in their construction or, in a very expensive way, being made even more stable.
  • a filter press system according to the present invention can therefore ensure uniform operation and thus reduce the overall load on the filter press system, increase the service life and thus noticeably reduce the overall costs.
  • the filter press system comprises both membrane plates and chamber plates, these membrane plates and the chamber plates being arranged alternately in a preferred embodiment.
  • a filter press system preferably comprises a plurality of chamber plates and a plurality of membrane plates which are stacked on top of one another, a membrane plate alternating with a chamber plate in each case.
  • the number of membrane plates and the chamber plates is not limited here at.
  • the arrangement or stacking direction is also not restricted; in particular, the filter plates can be stacked or arranged in a vertical or horizontal direction.
  • only every second filter plate in such a filter plate system has at least one sensor, preferably at least two sensors, pressure sensors are preferably used, in a system in which both membrane plates and chamber plates are arranged alternately before only the chamber plates are each provided with at least two sensors.
  • this chamber plate preferably comprises two sensors, preferably two pressure sensors, one sensor on each side, so that each of the sensors can measure the pressure in a chamber on each side of the chamber plate.
  • a particular advantage of this system is that between the filter plates, in particular the chamber plates, which are designed with one or preferably two sensors, filter plates, in particular membrane plates, can be used that do not have a sensor and also because of the additional sensors in the system used filter plates according to the invention, in particular chamber plates, do not need.
  • Providing the sensors exclusively in the chamber plates is also advantageous because the service life of the membrane plates, due to the movable membrane, is typically is usually less than the life of the chamber plates, so the sensors are attached to the more durable elements, which offers an additional cost advantage.
  • At least one sensor comprises a force transmitter which can measure the force on an element of the filter press system, for example a filter cloth, and the pressures in the respective chamber can then be calculated using these measured forces nen, preferably by the monitoring system of the filter press system according to the invention.
  • the resulting force which is caused by the pressure in the filtration chamber, is transmitted from the filtration chamber by means of an electrical, hydraulic or mechanical system, in particular to the outside of the filter plate, and by means of a monitoring system that before it is part of the filter press system.
  • An electrical transmission of a pressure in the chamber is also to be understood as a transmission of signals which contain or represent information about the measured or determined pressures.
  • membranes are placed in the chamber plate or additional membranes are placed in a membrane plate.
  • a pressure is transmitted from the filtration chamber via the membranes to a hydraulic system or a mechanical system and can be evaluated by a monitoring unit.
  • the monitoring system which is preferably part of the filter press system or is combined with the filter press system or integrated into it, comprises a control system which is designed so that in cases where the measurement results from at least two sensors let a differential pressure in two chambers close that exceeds a predetermined value, the operation of the filter press system is automatically stopped or interrupted or continued with changed operating parameters.
  • the monitoring system it is possible for the monitoring system to output an alarm signal to the operating personnel, which can in particular be output optically or acoustically, so that the operating personnel can decide whether certain measures need to be initiated.
  • the invention also relates to a filter plate for a filter press system, as described above be, wherein the filter plate has at least one sensor, preferably at least two sensors, which is or are arranged and designed so that when a Drive-specific use of the filter plate in a filter press system, a pressure in a chamber adjoining the filter plate can be measured or reproduced qualitatively.
  • Fig. 1 shows a partial cross section through an embodiment of a filter press system according to the present invention with several filter plates with sensors for measuring or determining the pressures prevailing in a chamber or in several chambers,
  • Fig. 2 shows a cross section through part of a preferred embodiment of a Fil terpressensystems according to the present invention for the hydraulic transmission of a pressure prevailing in a chamber
  • Fig. 3 shows a partial cross section through a further embodiment of a filter press system according to the present invention with several filter plates with Sen sensors for measuring or determining the pressures prevailing in a chamber or in several chambers.
  • FIG 1 shows a partial cross-section of several filter plates in a filter press system 10 according to the invention.
  • the filter press system 10 includes both membrane plates MP and chamber plates KP, which are arranged alternately Shows membrane plates MP and two chamber plates KP.
  • each chamber plate KP being provided with two pressure sensors 20 which are arranged on each side and thus on opposite sides of the chamber plate KP.
  • the sensors comprise force transducers which can measure a force which is exerted on the sensors 20 by the pressures prevailing in the chambers 100 and 200, see pressures F1, F2, F3, F4, F5, F6, which are shown schematically in FIG.
  • the chamber plate KP shown on the left in FIG. 1 on the right-hand side again in FIG. 1, measures a pressure PI in the chamber 100, while the chamber plate KP, shown on the right in FIG. 1 and on the left-hand side in FIG arranged, sensor 20 measures a pressure P2 in the chamber 200.
  • the pressure PI naturally also acts on the membrane plate MP shown in the center in FIG. 1 from the left, while the pressure P2 acts on the membrane plate MP arranged in the middle in FIG. 1 from the right. Additional sensors on the membrane plate are therefore possible, but not provided in this embodiment.
  • FIG. 1 It should be noted at this point that, for the sake of clarity, no filter cloths are shown in FIG. 1. These can be provided to the system in a variety of ways, in particular the filter cloths can be arranged in such a way that they cover the sensors 20, preferably cover them completely.
  • the embodiment shown in Figure 1 is therefore designed so that in the event that the differential pressure P1-P2 exceeds a predetermined value, in particular a mechanical limit value, the operation of the filter press system is automatically stopped or interrupted or continued with changed operating parameters, so that excessive load or possible damage, especially a plate break, is avoided.
  • a limit value can be reached, for example, when a given value or a given amount of deformation of a plate occurs.
  • the pressures prevailing in the filtration chamber or the forces resulting from the pressures are transmitted from a filtration chamber to the outside of the plate via a hydraulic or mechanical system.
  • a membrane is particularly preferably installed in a filtration chamber, and a pressure is preferably transmitted to a pressure sensor on the outside of the plate via a channel system which is filled with a liquid or a fluid medium.
  • the prevailing pressure or the resulting force can alternatively be transmitted to the outside of the plate via a mechanical system.
  • the filter cloths are not shown.
  • the filter cloths are preferably positioned directly on the side of the filter plates facing the chamber. In such an embodiment, the filter cloths therefore cover the sensors 20. This has the advantage that the sensors 20 are particularly protected.
  • FIG. 2 shows schematically parts of a filter press system 10 according to the invention, with part of a plate being shown, which can be either a membrane plate MP or a chamber plate KP.
  • the membrane plate MP or the chamber plate KP comprises an additional membrane 310 on which a pressure of a chamber 100 or a chamber 200 acts.
  • the membrane plate MP or the chamber plate KP comprises a channel 320 (only shown schematically) which is filled with a fluid, so that the pressure from the chamber 100 or the chamber 200, which acts on the membrane 310, on the in the fluid located in the channel 320 acts, the fluid in turn giving this pressure to sensors that are arranged in a monitoring system 400, also shown only schematically.
  • FIG. 3 shows a partial cross section of several filter plates in a filter press system 10 according to the invention.
  • the filter press system 10 comprises both membrane plates MP and chamber plates KP, which are arranged alternately.
  • the embodiment shown in FIG. 3 is in this respect very similar to the embodiment shown in FIG. 1, so that reference is made to the above explanations to avoid repetition.
  • the filter cloths 30 are also shown, which are arranged both on the chamber plates KP and on the membrane plates MP. As can be seen very clearly in FIG. 3, the filter cloths 30 in this embodiment are arranged in such a way that they do not cover the sensors 20.
  • the pressure is determined or measured by pressure sensors in the individual chambers, which are positioned in front of the filter cloths, i.e. in particular not covered by one or more filter cloths, as described above.
  • one or more filter cloths to comprise openings or recesses which completely or partially leave or do not cover the sensor (s) 20.
  • Such an arrangement has the advantage that the sensors 20 are not covered by other elements, here the filter cloths 30, which enables the sensors 20 to measure more precisely and more precisely.

Landscapes

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

Abstract

L'invention concerne un système de filtre-presse comprenant une pluralité de plaques filtrantes, le système de filtre-presse comprenant un système de surveillance. L'invention concerne également une plaque filtrante pour un tel système de filtre-presse.
PCT/EP2020/079250 2019-10-18 2020-10-16 Système de filtre-presse WO2021074404A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202019105795.5U DE202019105795U1 (de) 2019-10-18 2019-10-18 Filterpressensystem
DE202019105795.5 2019-10-18

Publications (1)

Publication Number Publication Date
WO2021074404A1 true WO2021074404A1 (fr) 2021-04-22

Family

ID=68652232

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2020/079250 WO2021074404A1 (fr) 2019-10-18 2020-10-16 Système de filtre-presse

Country Status (2)

Country Link
DE (1) DE202019105795U1 (fr)
WO (1) WO2021074404A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3609564A1 (de) * 1985-12-11 1987-06-19 Netzsch Maschinenfabrik Filterpresse mit membranplatten
EP3103540A1 (fr) * 2015-06-12 2016-12-14 LENSER Filtration GmbH Filtre presse
WO2017059956A1 (fr) 2015-10-06 2017-04-13 Imko Micromodultechnik Gmbh Filtre-presse, utilisation d'un capteur fonctionnant de manière électromagnétique dans celui-ci et élément de filtre en forme de plaque
CN108273295A (zh) * 2018-01-15 2018-07-13 南京中高知识产权股份有限公司 一种环保***及其工作方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3609564A1 (de) * 1985-12-11 1987-06-19 Netzsch Maschinenfabrik Filterpresse mit membranplatten
EP3103540A1 (fr) * 2015-06-12 2016-12-14 LENSER Filtration GmbH Filtre presse
WO2017059956A1 (fr) 2015-10-06 2017-04-13 Imko Micromodultechnik Gmbh Filtre-presse, utilisation d'un capteur fonctionnant de manière électromagnétique dans celui-ci et élément de filtre en forme de plaque
CN108273295A (zh) * 2018-01-15 2018-07-13 南京中高知识产权股份有限公司 一种环保***及其工作方法

Also Published As

Publication number Publication date
DE202019105795U1 (de) 2019-10-31

Similar Documents

Publication Publication Date Title
EP1299701B1 (fr) Capteur de pression differentielle
DE4042411C2 (de) Kapazitiver Differenzdruckdetektor
EP3344966B1 (fr) Ensemble capteur de pression et transducteurs de mesure pour l'instrumentation de processus à l'aide d'un tel ensemble capteur de pression
DE3713236C2 (fr)
DE3222620A1 (de) Druck- oder druckdifferenzmessgeraet mit einer vor ueberlastung geschuetzten drucksonsor-einrichtung
DE2718873A1 (de) Druckaufnehmer
EP3100015A1 (fr) Procédé permettant de faire fonctionner un transducteur de mesure de pression et transducteur de mesure de pression
DE10200779B4 (de) Druckmittler mit Modul zur Erkennung von Membranbrüchen und Druckmessgerät zur Erkennung von Membranbrüchen
DE102016124775A1 (de) Druckmessaufnehmer mit hydraulischem Druckmittler
EP1275951B1 (fr) Capteur de pression et procédé de surveillance de son fonctionnement
WO2021074404A1 (fr) Système de filtre-presse
DE102019128218B4 (de) Filterpressensystem und Filterplatte
EP2572177A1 (fr) Dispositif de mesure de pression différentielle, dispositif de surveillance du degré d'encrassement et dispositif filtre
EP1356259B1 (fr) Capteur de pression differentielle dote d'une securite contre les surcharges
DE2619864A1 (de) Messvorrichtung zur ueberwachung der schichtdicke des filterkuchens in einem scheibenfilter
WO2011138271A1 (fr) Plaque de filtrage pour une presse de filtrage et paquet de filtrage
DE894389C (de) Lamellenfilter, insbesondere mit Gegenstromreinigung
DE102006058269B4 (de) Verfahren zur Kalibrierung mindestens eines Drucksensors und entsprechender Drucksensor
DE3842662A1 (de) Membranfilterplatte
EP3103540A1 (fr) Filtre presse
DE102020129183A1 (de) Druckmessgerät und Verfahren zur Herstellung eines Druckmessgeräts
EP0253315B1 (fr) Filtre-presse
WO2012028428A2 (fr) Transducteur de mesure de pression
DE3325539A1 (de) Messumformer
DE102005001098A1 (de) Drucksensor (II)

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20793636

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20793636

Country of ref document: EP

Kind code of ref document: A1