EP4251328A1 - Procédé de détermination de l'étendue de la contamination à l'intérieur d'un bol d'un séparateur, et séparateur - Google Patents

Procédé de détermination de l'étendue de la contamination à l'intérieur d'un bol d'un séparateur, et séparateur

Info

Publication number
EP4251328A1
EP4251328A1 EP21820154.9A EP21820154A EP4251328A1 EP 4251328 A1 EP4251328 A1 EP 4251328A1 EP 21820154 A EP21820154 A EP 21820154A EP 4251328 A1 EP4251328 A1 EP 4251328A1
Authority
EP
European Patent Office
Prior art keywords
drum
separator
volume
displacement water
value
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
Application number
EP21820154.9A
Other languages
German (de)
English (en)
Inventor
Frank TIPPKEMPER
Martin LENTRUP
Peter Klomfas
Uwe Richter
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.)
GEA Westfalia Separator Group GmbH
Original Assignee
GEA Westfalia Separator Group GmbH
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 GEA Westfalia Separator Group GmbH filed Critical GEA Westfalia Separator Group GmbH
Publication of EP4251328A1 publication Critical patent/EP4251328A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/04—Periodical feeding or discharging; Control arrangements therefor
    • B04B11/043—Load indication with or without control arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/04—Periodical feeding or discharging; Control arrangements therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/04—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
    • B04B1/08—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B15/00—Other accessories for centrifuges
    • B04B15/06—Other accessories for centrifuges for cleaning bowls, filters, sieves, inserts, or the like

Definitions

  • the present invention relates to a method for determining the extent of contamination or adhesions within a drum of a separator, as well as a separator equipped accordingly.
  • deposits can form inside the drum. These deposits can occur both in the sludge chamber and in the plate pack. This is normal operation. The deposits can be unevenly distributed in the drum, which leads to vibrations that can be monitored using measurement technology.
  • emptying is understood to mean the opening of outlet valves in the drum wall so that parts of the drum contents (partial emptying) or the entire drum contents (complete emptying) can be ejected when the separator is in operation, i.e. when the drum is rotating. Separators of this type are referred to as self-draining separators.
  • the maintenance interval In the case of separators, the maintenance interval must be correspondingly short in order to remove the buildup that cannot be removed by emptying (e.g. buildup in the plate stack). This manual cleaning is time-consuming and shortens the availability of the separator. It must therefore happen early enough so that the drum is not too dirty. For safety reasons, the maintenance interval is chosen to be correspondingly short as a precaution, but this is unfavorable for economic reasons.
  • the amount of adhering liquid is also not reproducible, as this depends heavily on the degree of contamination on the plates.
  • the present invention is based on a separator which is commonly referred to as a self-emptyer. This means a drain takes place under high G-number.
  • the adhering solids are deposits in the bowl which are not removed by a solids discharge, eg nozzles.
  • WO 2009/010 630 A1 only discloses the determination and dosing of the volume of displacement water supplied. Although there is a pressure sensor in the outlet of the drum, use of the sensor to determine the drum volume is not disclosed in this context.
  • a detection of a soiled drum, including an at least partially soiled disk pack, has not been possible at all or at least not precisely.
  • EP 2170520 discloses a system for optimizing the amount of displacement liquid in a separator. With this displacement liquid, the valuable phase is to be displaced from the drum before the sludge phase is emptied.
  • the displacement liquid must be heavier than the value phase, but lighter than the sludge phase. Even with a possibly imprecise - i.e. too large - emptying, a product loss of the value phase can be minimized, since this was pushed out of the drum.
  • the amount of displacement liquid e.g., water
  • the amount of displacement liquid is adjusted based on its pressure.
  • the volume flow of the water fed in is measured using a Venturi nozzle.
  • the volume is calculated using pressure differences and the properties of the water, although the volume of the water is not determined directly.
  • the present invention solves the aforementioned problem by a method having the features of claim 1 and in a structurally elegant manner by a separator having the features of claim 15.
  • a method according to the invention for determining the extent of contamination within a drum of a centrifugal separator comprises at least the following steps:
  • A providing a value for a maximum internal volume of the drum
  • This value can be the so-called technical inner drum volume, which represents a theoretically calculated value due to the design.
  • the value can also be determined after maintenance, including manual cleaning of the interior of the drum, by subsequent filling as a reference value determined by measurement.
  • the currently available free drum volume represents the drum volume after one or more production cycles in which deposits have accumulated inside the drum.
  • step C the soiling is then determined by comparing the values provided in steps A and B.
  • the extent of the contamination can then be output to the user.
  • a control command e.g. stopping the separator or initiating intensive cleaning, can be generated in order to reduce the extent of contamination.
  • Determining the extent of the contamination can include both a specific value and only a comparison with a limit value for a maximum acceptable degree of contamination at which no measures need to be taken.
  • the aforesaid method allows an increase in the maintenance periods and the cycles of manual emptying of a centrifugal separator.
  • the emptying intervals can be adjusted dynamically, since e.g. the sludge chamber volume can be calculated according to the deposits.
  • emptying interval manual emptying by opening the separator
  • a manually started function for automatic emptying or an automatically started emptying step is always meant.
  • the emptying can also be understood as partial emptying or total emptying.
  • Fewer dumps also means reduced disposal costs for the solid and less loss of the displacement phase and, where appropriate, the value phase.
  • Another way to reduce the deposits is to adjust the type of emptying. A single emptying is carried out as standard, but this can also be carried out twice or twice with rinsing water switched in between, depending on the degree of deposits. These measures also improve the reduction of deposits. This can also be set accordingly by generating it before the control command mentioned. Further advantageous refinements of the method according to the invention are the subject matter of the dependent claims.
  • the metrological determination of the currently available free drum volume can preferably be carried out by the following steps:
  • a self-emptying separator can still have deposits or adhesions in the drum interior, which reduces the maximum drum internal volume to a currently available free drum volume.
  • the filling preferably takes place as a complete filling of the bowl up to a line at the product outlet for the heavy liquid phase.
  • the complete drum as well as the rotatable parts of the inlet and outlet system that belong to the drum and are non-rotatably arranged in the drum volume are covered by the filling. This enables a comprehensive evaluation of the extent of deposits or contamination.
  • the status of the filling of the drum can then advantageously be measured using a sensor of the separator.
  • At least one or more pressure sensors and/or one or more limit switches e.g. capacitive limit switches or conductivity limit switches, which detect when a filling level has been reached by changing the conductivity, are preferably suitable for this purpose.
  • Other limit switches are based on ultrasound. Since the speed of sound in water is significantly higher than in air, a change in medium can be detected at the position of the limit switch. Optical limit switches are also conceivable.
  • the pressure sensor or the limit switch can preferably be arranged at the end of a liquid phase, in particular at the end of the heavier liquid phase, of the separator.
  • an optional automatic cleaning sequence eg CIP and/or SIP cleaning
  • CIP and/or SIP cleaning can be initiated without dismantling the separator. It is also advantageous, especially for the use of a pressure sensor, if the separator has a valve at the outlet of the liquid phase, and downstream of the sensor in terms of flow, which is or is closed during the filling of the drum and which is filled upon detection of a filled one condition of the drum being opened by the sensor.
  • the liquid introduced to fill the drum is preferably displacement water, with a first displacement water feed of the separator for filling the drum and a product feed of the separator opening into a common feed pipe.
  • the feed pipe can be arranged parallel and in particular concentrically to the axis of rotation of the separator.
  • a control water inlet for actuating a solids emptying of the separator can also be provided.
  • the volume required for filling the drum is determined by a measuring device for determining an inflow volume and in particular by a flow meter.
  • This measuring device is preferably arranged in or on the displacement water inlet.
  • the control signal generated in step C is preferably used to initiate an output, e.g. a warning, by an output unit.
  • an output e.g. a warning
  • This can be a light signal (alarm lamp), a display output or an acoustic signal.
  • control signal can take immediate action on the operation of the separator, in particular triggering an emergency stop or an adjustment of the operating program, e.g. the cleaning sequence. It is also possible to adjust the duration or frequency of partial emptying of the drum.
  • a value for a maximum internal volume of the drum can be provided by a reference measurement when the condition of the drum is known, in particular after manual emptying and/or maintenance.
  • providing a value for a maximum internal volume of the drum may be accomplished by providing a value for a technical Drum volume as a value for the design-related maximum internal volume of the drum.
  • steps I and II of the aforementioned method can be repeated several times, but at least twice.
  • a separator which is preferably designed to carry out the method according to the invention.
  • This comprises a rotatable drum, a product feed, and a displacement water feed for introducing displacement water into the drum and, preferably, a control water feed for actuating a solids emptying of the drum.
  • the displacement water inlet is provided with a valve for the controlled introduction of displacement water into the drum.
  • the displacement water inlet has a measuring device for determining the supplied volume of displacement water until the drum is filled.
  • the separator has a control and/or evaluation unit which is equipped to control the valve arrangement as a function of the determined volume of water displaced.
  • control and/or evaluation unit is equipped to evaluate the volume measurement of the measuring device from the opening of the valve until the sensor detects that the drum is completely filled.
  • FIG. 1 shows a perspective representation of a separator according to the invention
  • 2 shows a sectional view of the separator according to the invention for carrying out the method according to the invention
  • Fig. 3 is a schematic representation of the process sequence according to the invention.
  • FIGS. 1 and 2 shows a separator 1 with a rotatably mounted drum 2, which has a technical drum volume.
  • the technical bowl volume is a theoretical value, which results from the design-related specifications of the separator 1.
  • This technical drum volume is from the dimension of the inner volume 12 of the drum 2 and in the inner volume 12 arranged structures, such as the dimen sion and the number of plates of a plate pack 3 and their distance from each other.
  • the size of the technical drum volume also includes, among other things, the design of one or more inlet areas 4, distribution areas 5, separating plates 6, peeling chambers 7, peeling discs 8, discharge areas 9 and the like.
  • the free drum volume is thus a theoretically calculated value, without any dirt inside the drum 2 or any other type of deposits.
  • the separator 1 also has a product inlet 10 and a displacement water inlet 11, which open into a common inlet pipe 13, which in turn at least partially forms part of an inlet area 4 in the inner volume 12 of the drum 2.
  • the separator 1 has a first outlet 14 for a light liquid phase, a second outlet 15 for a heavy liquid phase and a solids outlet 16 as part of a solids discharge system.
  • the separator 1 is designed as a three-phase separator.
  • the separator 1 shown in FIGS. 1 and 2 has a pressure sensor 23 and 24 on the first and second outlet 14 and 15 of the liquid phases. These pressure sensors 23 and 24 typically enable process monitoring during the separation of a light phase and a heavy phase, such as the cleaning of water in oil.
  • control volume it is also possible to determine a so-called control volume by means of the aforementioned sensors.
  • the separator 1 also has a control water inlet 22, which is provided for controlling the solids discharge or the solids emptying, e.g. by hydraulically-actuated linear displacement of a piston valve as part of a solids emptying system.
  • a water inlet 28 of the separator 1 branches into the two aforementioned water inlets 11 and 22. As already mentioned, the inlets 11 and 22 can also be routed separately to the separator. There is therefore no restriction to the configuration mentioned.
  • the supply of the quantity of displacement water in the first displacement water inlet 11 or in the second displacement water inlet 22 is controlled by a valve arrangement 29, specifically by two valves 17 and 18 in FIG.
  • This can preferably be a matter of solenoid valves.
  • the two valves 17 and 18 can also be combined in a multi-way valve, so that the valve arrangement 29 can also include just one valve.
  • the quantity and/or the volume of displacement water supplied through the displacement water inlet 11 is determined by a corresponding measuring device
  • the second outlet 15 for the heavy phase preferably also has a valve
  • the measured values determined by the measuring device 19, as well as the measured values of the pressure sensors 23 or 24, can be transmitted to a control and/or evaluation unit 21, which then controls the valves 17 and 18 for the control and displacement water and the control of the Valve 20 for the heavy phase before takes.
  • the aim of measuring the flow rate of displacement water and the associated valve control is to determine a control volume that defines the volume currently available in the drum.
  • a measured value from a so-called control measurement results in this control volume and can then be compared with a specification that is the real free volume (e.g. calculated from the geometry or determined in tests).
  • the free drum volume (technical drum volume) depends on the machine type (size of the drum, number and spacing of the plates, etc.) and is stored in the machine control. The comparison is then significant for the degree of soiling of the drum.
  • a product feed into the drum 2 is interrupted.
  • a second step 102 the drum is completely emptied. Emptying can take place, for example, through the solids discharge openings, which are then closed again.
  • valve 18 is opened in step 103 and the displacement water is fed into the drum 2 via the water inlet 11 .
  • the volume of displacement water introduced is measured by the measuring device 19 until the drum is completely filled.
  • the complete filling of the drum 2 can be determined in step 104 by the pressure sensor 24 in the outlet 15 of the heavy liquid phase.
  • the additional valve 20 in said outlet 15 of the heavy liquid phase is closed when filling the drum with displacement water, at least immediately before the highest filling state is reached.
  • this pressure sensor 24 detects the presence of the heavy phase, in this case the displacement water.
  • the pressure sensor would be arranged in the flow of the liquid phase.
  • the drum volume can be measured several times in order to compensate for the errors in the measurement using statistical methods.
  • the aforementioned measurements or one of the measurements is carried out while the separator is in operation, i.e. while the drum is rotating.
  • a large number of other sensors can also be used to detect a complete filling.
  • a conductivity measurement is useful here, which can detect a change in the conductivity of the medium at a filling level and thus a filling status.
  • So-called limit switches which can also be based on different physical measuring principles, can also be used particularly preferably within the scope of the present invention.
  • capacitive limit switches or also vibronic limit switches or the like are known here.
  • the accuracy of the aforementioned measurements of the displacement water volume can be further improved by taking into account the temperature of the displacement water.
  • control volume can be compared with the technical drum volume as the theoretical maximum value.
  • the controller can either suggest necessary measures or automatically initiate appropriate steps.
  • a comparative value can also be determined taking into account the theoretical technical drum volume, so that the degree of soiling can be better quantified for the user.
  • a sixth step 106 the drum 2 is emptied of the displacement water.
  • emptying in FIG. 2 takes place via the solids outlet 16 or, if the separator is to be filled with product again immediately, also via a diversion pipe 25 which opens out in the solids collection area 26 of a separator hood 27 .
  • Soiling can be detected by determining the difference between the technical drum volume and the control volume.
  • Control volume or free drum volume are used synonymously in the context of the present application.
  • the controller can react accordingly in a seventh step 107 and generate a control signal.
  • the control signal can initiate an output, e.g., a warning, or take immediate action on the operation of the separator. Different levels of warning values are conceivable, at which messages or warnings are issued or even the machine is stopped.
  • Regular or irregular reference measurements result in a reference volume and can be carried out, for example, during maintenance (e.g. maintenance interval 4000 h) or at another point in time.
  • This reference measurement can also be compared or calculated with the control volume, from which a degree of contamination and in particular a tendency towards the build-up of a degree of contamination over time can be derived. Furthermore, external influences such as temperature or product properties of the products to be processed can be included when determining the free drum volume.
  • a measurement of the drum volume after maintenance can also be evaluated.
  • the difference between the reference volume and the control volume can also be used to determine the degree of contamination. Combinations (mean value or similar) of the two measurements (technical drum volume minus control volume and reference volume minus control volume) are also conceivable.
  • possible and preferred measuring devices for determining the quantity or the volume of the displacement water are preferably flow measuring devices.
  • Suitable measuring devices in particular for determining the volume of displacement water, are
  • IDM Inductive Flow Meters
  • Mass flowmeters such as Coriolis flowmeters (advantageous, since these measure quite independently of air inclusions in the liquid), eddy current flowmeters (measuring principle: Karman vortex street) or vortex measurement, as well as caloric flowmeters;
  • the volume can be calculated from the mass if the density of the measuring medium is known.
  • a device can include the separator and a buffer tank, which collects the volume of the product to be processed during the determination of the degree of contamination or the free drum volume.
  • two identical separators can also be operated in parallel next to each other, which are controlled in such a way that only one determination of the degree of contamination is carried out in each case.

Landscapes

  • Centrifugal Separators (AREA)

Abstract

L'invention concerne un procédé de détermination de l'étendue de la contamination à l'intérieur d'un bol (2) d'un séparateur (1), ledit procédé comprenant au moins les étapes suivantes : A) fournir une valeur pour un volume interne maximal du bol (2) ; B) déterminer de manière métrologique le volume de bol libre actuellement disponible du bol (2) ; C) comparer les valeurs des étapes A et B et déterminer l'étendue de la contamination à l'intérieur du bol (2) et/ou générer une commande de régulation ; le procédé comprenant les étapes A à C étant mis en œuvre pendant que le séparateur est en rotation. L'invention concerne également un séparateur (1).
EP21820154.9A 2020-11-30 2021-11-24 Procédé de détermination de l'étendue de la contamination à l'intérieur d'un bol d'un séparateur, et séparateur Pending EP4251328A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020131701.8A DE102020131701A1 (de) 2020-11-30 2020-11-30 Verfahren zur Bestimmung des Umfangs an Verschmutzungen innerhalb einer Trommel eines Separators sowie ein Separator
PCT/EP2021/082784 WO2022112304A1 (fr) 2020-11-30 2021-11-24 Procédé de détermination de l'étendue de la contamination à l'intérieur d'un bol d'un séparateur, et séparateur

Publications (1)

Publication Number Publication Date
EP4251328A1 true EP4251328A1 (fr) 2023-10-04

Family

ID=78822317

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21820154.9A Pending EP4251328A1 (fr) 2020-11-30 2021-11-24 Procédé de détermination de l'étendue de la contamination à l'intérieur d'un bol d'un séparateur, et séparateur

Country Status (6)

Country Link
EP (1) EP4251328A1 (fr)
JP (1) JP2023550810A (fr)
KR (1) KR20230109643A (fr)
CN (1) CN116457104A (fr)
DE (1) DE102020131701A1 (fr)
WO (1) WO2022112304A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE609796C (de) * 1933-10-19 1935-02-23 Bergedorfer Eisenwerk Akt Ges Schleudermaschine mit bei Stillstand selbstentleerender Trommel
DE7011737U (de) 1970-03-31 1970-07-16 Loddenkemper Franz-Josef Vorrichtung zur konstanthaltung eines fluessigkeitsdruckes oder zur erzeugung eines hoeheren konstantdruckes bei wechselnden entnahmemengen.
DE4204805A1 (de) 1992-02-18 1993-08-19 Henkel Kgaa Verfahren zum kontinuierlichen betreiben eines separators und zusatzeinrichtung fuer diesen separator
JP3978857B2 (ja) * 1998-03-17 2007-09-19 株式会社大川原製作所 遠心脱水機における滞留量の測定方法並びにこれを用いた脱水制御方法
FI119802B (fi) 2007-07-13 2009-03-31 Waertsilae Finland Oy Menetelmä separaattorin käyttämiseksi ja separaattori
DE102017111672B4 (de) 2017-03-29 2019-05-16 Gea Mechanical Equipment Gmbh Verfahren zur automatisierten Feststoffentleerung von Zentrifugen

Also Published As

Publication number Publication date
DE102020131701A1 (de) 2022-06-02
WO2022112304A1 (fr) 2022-06-02
KR20230109643A (ko) 2023-07-20
CN116457104A (zh) 2023-07-18
JP2023550810A (ja) 2023-12-05

Similar Documents

Publication Publication Date Title
DE69519096T2 (de) Verfahren und ausrüstung zur überwachung eines zentrifugalabscheiders
DE69811153T2 (de) Verfahren und Apparat zur Steuerung von vertikalen und horizontalen Trommelzentrifugen
EP3060350B1 (fr) Procédé de clarification d'un produit fluide avec une centrifugeuse
EP3060352B1 (fr) Procédé de clarification d'un produit fluide au moyen d'une centrifugeuse
WO2015059089A1 (fr) Procédé d'épuration en continu d'une suspension fluide à l'aide d'une centrifugeuse
EP3600680B1 (fr) Procédé servant à purger de manière automatisée des matières solides de centrifugeuses
DE102008062055B4 (de) Verfahren zur Überwachung der automatisierten Entleerung einer Zentrifuge
EP1124642A1 (fr) Ensemble hydrocyclone et procede correspondant
EP4251328A1 (fr) Procédé de détermination de l'étendue de la contamination à l'intérieur d'un bol d'un séparateur, et séparateur
EP2358479B1 (fr) Ensemble hydrocyclone
DE102015119165B4 (de) Verfahren zur Klärung eines fließfähigen Produktes mit einer Zentrifuge, insbesondere einem Separator
EP3634642B1 (fr) Procédé de vidange de matière solide d'une centrifugeuse
DE102008056369A1 (de) Zyklonabscheider und Pulverrückgewinnungsvorrichtung für eine Pulverbeschichtungsanlage mit einem Zyklonabscheider
EP0515396B1 (fr) Centrifugeuse a tambour centrifugeur a vidange automatique
EP2335798A1 (fr) Dispositif de séparation d'un mélange gaz-liquide
EP4237158A1 (fr) Dispositif et procédé pour séparer en continu des matériaux coulants de densité différente d'une suspension
DE4243239A1 (de) Vorrichtung zum Abscheiden von Amalgam
EP3485979A1 (fr) Procédé de détection de l'état de fonctionnement d'une centrifugeuse
WO2023227263A1 (fr) Procédé de surveillance d'une fuite de tambour sur un séparateur centrifuge
EP1402955B1 (fr) Séparateur avec vidage automatique des particules solides dans un container et procédé d'operation d'un tel separateur
DE2046274C3 (de) Verfahren zur vollständigen Entleerung einer Vollmantelzentrifuge
DE19748233A1 (de) Filtervorrichtung für Feststoffe, insbesondere Grobschmutz, aufweisendes Abwasser
DE3841634A1 (de) Verfahren zum feststoffabhaengigen oeffnen eines zentrifugalseparators
DE102010022928A1 (de) Verfahren zur Reinigung einer Filterpatrone und Filterpatronen-Reinigungsvorrichtung sowie Abscheider mit einer solchen Einrichtung
EP1787723B1 (fr) Cartouche centrifuge

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20230322

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)