EP3060351B1 - Procédé d'épuration en continu d'une suspension fluide à l'aide d'une centrifugeuse - Google Patents

Procédé d'épuration en continu d'une suspension fluide à l'aide d'une centrifugeuse Download PDF

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Publication number
EP3060351B1
EP3060351B1 EP14786883.0A EP14786883A EP3060351B1 EP 3060351 B1 EP3060351 B1 EP 3060351B1 EP 14786883 A EP14786883 A EP 14786883A EP 3060351 B1 EP3060351 B1 EP 3060351B1
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Prior art keywords
suspension
solid
matter
separator
drum
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EP14786883.0A
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German (de)
English (en)
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EP3060351A1 (fr
Inventor
Tore Hartmann
Oliver Baumann
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GEA Mechanical Equipment GmbH
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GEA Mechanical Equipment GmbH
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    • 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
    • B04B1/10—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl
    • B04B1/14—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl with periodical discharge
    • 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
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/04—Periodical feeding or discharging; Control arrangements therefor
    • B04B11/05—Base discharge

Definitions

  • the invention relates to a method according to the preamble of claim 1.
  • a suspension parameter - here the degree of turbidity of a clear phase running out of the drum - is determined and used to monitor the emptying of the solids space of the drum.
  • the solid phase is emptied continuously. If the turbidity in the clear phase becomes too high, the clear phase is returned to the drum.
  • a clarifier for clarifying liquids, in particular beverages in which the solids are discontinuously opened and closed with the aid of a piston valve Discharge openings are emptied when the degree of turbidity measured with the photocell exceeds a certain limit.
  • the object of the invention is to solve this problem.
  • the invention solves this problem by a method having the features of claim 1.
  • the limit value is one that can be determined directly from the (preferably) temporal behavior of the one or more suspension parameters. However, it can also be such a limit value that can be determined from the first (or second or nth) derivation of the temporal behavior of the one or more suspension parameters, for example in the form of a difference quotient from the measured values of the suspension parameter and the time intervals between the measurements of the Suspension parameters.
  • the direct or indirect determination of one or two or more of the parameters mentioned makes it possible to determine in each case the solids mass (or a value proportional thereto) that has been separated from the suspension since the last emptying, in order to draw a conclusion about the degree of filling of the solids space pull with solid separated from the suspension, which has collected in the solid collecting space.
  • the solid must not reach the edge of the stack of plates. If the determined solids mass value therefore exceeds a predetermined limit value, for example determined in test operation, an emptying is triggered by the To completely or at least largely empty the solids collecting chamber of solids.
  • the Coriolis flow meter is suitable for determining the suspension and / or solids mass, with which a sufficiently precise determination of this value or these values is possible in a simple manner.
  • the Coriolis flow meter is preferably designed to measure the mass flow, the density and the density in parallel as a totalizer. It also preferably measures the temperature. Density as a totalizer means that the density is measured again and again at intervals, that (directly or suitably processed, e.g. multiplied by the time interval between measurements) the sum of these values is formed and thus a value is determined that corresponds directly to the solids mass.
  • the suspension to be processed has a relatively constant, constant solids content, it is sufficient to determine the mass flow per time of incoming suspension and to integrate it over time, in particular by adding it up, in order to calculate the solids content that arises in the calculation Solid collection space has collected. If this fluctuates, on the other hand, it may be necessary to determine how high the solids content in the incoming suspension is at the time using a pre-stored table, e.g. determined in the experiment, or with the aid of a predetermined functional relationship and the measurement of a further suspension parameter such as the density is just what is possible with modern Coriolis flowmeters.
  • the Coriolis flow meter can preferably also carry out in an integrated manner, and with a supplementary summation of the measured values - which is also preferably carried out directly by the Coriolis flow meter / sensor, the degree of filling of the solids collecting space of the drum can be determined.
  • the Coriolis flow meter (Coriolis meter) can be used to protect the self-draining separator or its drum against excessive densities in the inlet by preventing the inlet (e.g. by switching a valve) when the maximum permitted density for the respective self-draining separator is exceeded. This value is already known and is shown for each separator.
  • the individual process steps do not necessarily have to be carried out in one structural unit of the separator, but can also be carried out by external devices (in particular measuring devices, sensors, control unit individually or in combination of these and possibly other devices).
  • Fig. 1 shows a separator 1 for clarifying fluid-containing starting suspensions SU with a rotatable drum with a vertical axis of rotation.
  • the suspension is processed in continuous operation. Ie, the suspension feed takes place continuously and also the removal of at least one clarified liquid phase, called the clear phase.
  • the self-draining separator has a discontinuous solids discharge, the one separated from a suspension by clarification Solid S is emptied at intervals by opening and reclosing discharge nozzles or discharge openings 5.
  • the drum has a lower drum part 10 and a drum cover 11. It is also preferably surrounded by a hood 12.
  • the drum is also placed on a drive spindle 2 which is rotatably mounted and can be driven by a motor.
  • the drum has a suspension inlet 4 through which a suspension SU to be clarified is passed into the drum. It also has at least one outlet 13 with a gripper, which is used to derive a clear phase L from the drum.
  • the gripper is a kind of centripetal pump.
  • the liquid discharge could also be done by other means. In addition to clarification, it would also be conceivable to separate the suspension into two liquid phases of different densities. This would require a further liquid drain.
  • the drum preferably has a plate pack 14 made of axially spaced separating plates.
  • a solids collecting space 8 is formed between the outer circumference of the plate pack 14 and the inner circumference of the drum in the area of its largest inner diameter. Solids, which are separated from the clear phase in the area of the plate pack 14, collect in the solids collecting space 8, from which the solids can be discharged from the drum via the discharge openings 5.
  • the discharge openings 5 can be opened and closed by means of a piston slide 6, which is arranged in the lower drum part 11. When the discharge openings are open, the solid S is thrown out of the drum into a solid catcher 7.
  • the drum has an actuating mechanism for moving the piston slide 6.
  • it comprises at least one supply line 15 for a control fluid such as water and a valve arrangement 16 in the drum and further elements outside the drum.
  • a control fluid such as water
  • the supply of the control fluid is made possible via a control valve 17 which is arranged outside the drum and which is in a supply line arranged outside the drum 19 is arranged for the control fluid, so that the control fluid can be sprayed into the drum for emptying by releasing the control valve or, conversely, the inflow of control fluid can be interrupted in order to move the piston slide accordingly in order to open the discharge openings.
  • the actuating mechanism - here the control valve 17 - is connected via a data line 18 to a control unit 9 for controlling and / or regulating the solids discharge.
  • a Coriolis sensor 20 is arranged in the inlet 4.
  • the Coriolis sensor 20 is designed as a Coriolis mass flow meter.
  • the function of a Coriolis sensor designed as a Coriolis mass flow meter is known per se. If a homogeneous mixture of the solid phase S and the liquid phase is present in the incoming suspension SU, the two phases S and L can be determined proportionately by means of a density measurement which can also be carried out with the sensor 20 and the fluid properties of the suspension which are known per se. Possibly. these fluid properties are determined in tests or in test mode.
  • the Coriolis sensor 20 is connected via a wired or wireless data line 21 to the evaluation and control unit 9 (preferably a control computer of the separator), which evaluates the measured values determined and controls the emptying and thus the opening of the discharge openings 5 as a function of this evaluation.
  • the evaluation and control unit 9 preferably a control computer of the separator
  • the suspension SU is preferably passed continuously into the separator, in which it is clarified. There is a continuous clear phase discharge of the clear phase L.
  • Coriotis sensor 20 is arranged in inlet 4 and is used in step 100 to measure one or more of the suspension parameters mass, solid mass in suspension, mass flow, temperature, density and / or totalizer density.
  • the signal of the Coriolis sensor 20 is summed up by the control unit 9 of the separator or by electronics integrated in the Coriolis sensor in a step 200. This totalized value is temporarily stored in a totalizer in the sensor itself or preferably in the control unit.
  • the summed value - preferably a mass value or a value proportional to the mass value - is then compared in a step 300 with a predetermined and previously stored limit value.
  • This predetermined limit value can, for example, have been determined beforehand during measurements in trial operation in such a way that it corresponds to an 80% filling of the solid collecting space with solid.
  • steps 100 and 200 are repeated (indicated by the arrow at "300" down).
  • the solids collecting space is emptied in a step 400 by actuating the piston valve.
  • the total counter is reset to zero and a measurement according to step 100 and a summation of the measured values in the total counter according to step 200 are repeated until they are emptied again.

Landscapes

  • Centrifugal Separators (AREA)

Claims (5)

  1. Procédé pour la clarification en continu d'une suspension fluide (SU) avec une centrifugeuse qui est un séparateur à vidange automatique discontinue des solides comprenant un tambour rotatif à axe de rotation vertical avec une arrivée pour la suspension (SU) entrante à clarifier qui présente un ou plusieurs paramètres de la suspension, et avec au moins une sortie de liquide pour la sortie en continu d'au moins une phase liquide (L) clarifiée, ainsi que des ouvertures de sortie des solides qui s'ouvrent et se referment de façon intermittente pour l'évacuation discontinue de la phase solide (S), le tambour comprenant en autres un paquet de disques (14) composé de disques de séparation écartés dans le sens axial,
    caractérisé en ce qu'il comprend les étapes suivantes :
    a) mesure au moins du paramètre de la suspension de débit massique et de préférence d'un ou plusieurs des autres paramètres de la suspension comprenant la masse, la masse des solides dans la suspension, la température, la densité et la densité totalisée, au moins un débitmètre à effet Coriolis étant utilisé pour déterminer l'un ou les plusieurs des paramètres de la suspension,
    b) déclenchement d'une évacuation des solides de durée limitée à la suite d'une détermination répétée dans l'étape a) quand une valeur limite de l'un ou des plusieurs des paramètres de la suspension mesurés est dépassée ou après qu'elle a été dépassée, le déclenchement de l'évacuation des solides s'effectuant à la suite d'une intégration temporelle du signal de sortie du débitmètre à effet Coriolis.
  2. Procédé selon la revendication 1, caractérisé en ce que la valeur de masse de solides séparés de la suspension depuis la dernière vidange ou une valeur proportionnelle à celle-ci est déterminée afin de déduire le degré de remplissage du compartiment à solides avec des solides séparés de la suspension.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'intégration temporelle est réalisée par l'addition des valeurs de mesure et en ce que la valeur limite est une somme limite.
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que la suspension (SU) traitée contient une quantité variable de solides.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que les résultats de mesure du débitmètre à effet Coriolis sont en outre utilisés pour protéger le séparateur à vidange automatique ou son tambour d'une trop grande densité dans l'arrivée en empêchant l'arrivée lorsqu'une densité maximale autorisée est dépassée.
EP14786883.0A 2013-10-21 2014-10-20 Procédé d'épuration en continu d'une suspension fluide à l'aide d'une centrifugeuse Active EP3060351B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013111586.1A DE102013111586A1 (de) 2013-10-21 2013-10-21 Verfahren zur kontinuierlichen Klärung einer fließfähigen Suspension mit schwankendem Feststoffgehalt mit einer Zentrifuge, insbesondere einem selbstentleerenden Separator
PCT/EP2014/072435 WO2015059089A1 (fr) 2013-10-21 2014-10-20 Procédé d'épuration en continu d'une suspension fluide à l'aide d'une centrifugeuse

Publications (2)

Publication Number Publication Date
EP3060351A1 EP3060351A1 (fr) 2016-08-31
EP3060351B1 true EP3060351B1 (fr) 2020-03-11

Family

ID=51786942

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EP14786883.0A Active EP3060351B1 (fr) 2013-10-21 2014-10-20 Procédé d'épuration en continu d'une suspension fluide à l'aide d'une centrifugeuse

Country Status (6)

Country Link
US (1) US10022729B2 (fr)
EP (1) EP3060351B1 (fr)
CN (1) CN105658337A (fr)
CA (1) CA2925202C (fr)
DE (1) DE102013111586A1 (fr)
WO (1) WO2015059089A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20145301A (fi) * 2014-03-31 2015-10-01 Waertsilae Finland Oy Menetelmä keskipakoseparaattorin tyhjennysajoituksen ohjaamiseksi ja keskipakoseparaattori
WO2017005676A1 (fr) 2015-07-09 2017-01-12 Tetra Laval Holdings & Finance S.A. Procédé et dispositif de standardisation en ligne de la teneur en graisses d'un produit laitier
DE102015119165B4 (de) * 2015-11-06 2022-06-09 Gea Mechanical Equipment Gmbh Verfahren zur Klärung eines fließfähigen Produktes mit einer Zentrifuge, insbesondere einem Separator
DE102017111672B4 (de) * 2017-03-29 2019-05-16 Gea Mechanical Equipment Gmbh Verfahren zur automatisierten Feststoffentleerung von Zentrifugen
JP6941519B2 (ja) * 2017-09-20 2021-09-29 三菱化工機株式会社 遠心分離装置の制御装置、遠心分離装置、舶用排気ガススクラバーシステム、および舶用ディーゼルエンジン
DE102017128027A1 (de) 2017-11-27 2019-05-29 Gea Mechanical Equipment Gmbh Separator
CN112827668B (zh) * 2020-12-31 2022-11-01 青岛诺凯达机械制造有限公司 一种蝶式离心机

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1186414B (de) 1963-10-24 1965-01-28 Westfalia Separator Ag Verfahren und Vorrichtung zur Steuerung einer Schlammzentrifuge
DE2814523A1 (de) 1978-04-04 1979-10-18 Batyrev Verfahren und einrichtung zur steuerung eines abscheiders
GB1587853A (en) 1978-03-08 1981-04-08 Zoblin P V Separator control method and device
US4768384A (en) 1986-09-26 1988-09-06 Flowtec Ag Mass flow meter operating by the Coriolis principle
US5318500A (en) 1992-10-15 1994-06-07 Eli Lilly And Company Method for controlling intermittently discharged centrifuges
EP0831306A1 (fr) 1996-09-19 1998-03-25 Oval Corporation Débitmètre Coriolis
EP1798536A1 (fr) 2003-09-29 2007-06-20 Micro Motion, Inc. Mesure de température avec un débitmètre de Coriolis
EP1840537A2 (fr) 2001-08-29 2007-10-03 Micro Motion, Inc. Détermination de la proportion d'un composant majoritaire d'un fluide à l'aide d'un débitmètre à effet de Coriolis
WO2011083036A2 (fr) 2010-01-08 2011-07-14 Endress+Hauser Meßtechnik GmbH+Co. KG Système pour mesurer la viscosité d'un liquide à température régulée et homogène
WO2011093784A1 (fr) 2010-01-29 2011-08-04 Alfa Laval Corporate Ab Systeme comprenant un separateur centrifuge et son procede de commande
EP2644278A1 (fr) 2012-03-27 2013-10-02 Alfa Laval Corporate AB Séparateur centrifuge et procédé de commande de décharge intermittente

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DE3228074A1 (de) 1982-07-28 1984-02-02 Westfalia Separator Ag, 4740 Oelde Verfahren und vorrichtung zur optimierung der geklaerten phase und der feststoffkonzentration bei einer zentrifuge mit kontinuierlichem feststoffaustrag
CN101342516B (zh) * 2008-06-23 2011-04-13 薛晓宁 平带传动碟式分离机
SE533360C2 (sv) * 2009-02-24 2010-09-07 Alfa Laval Corp Ab Centrifugalseparator och metod för separering
CN102614996A (zh) * 2012-03-15 2012-08-01 张家港市腾龙机械制造有限公司 吊袋离心机

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1186414B (de) 1963-10-24 1965-01-28 Westfalia Separator Ag Verfahren und Vorrichtung zur Steuerung einer Schlammzentrifuge
GB1587853A (en) 1978-03-08 1981-04-08 Zoblin P V Separator control method and device
DE2814523A1 (de) 1978-04-04 1979-10-18 Batyrev Verfahren und einrichtung zur steuerung eines abscheiders
US4768384A (en) 1986-09-26 1988-09-06 Flowtec Ag Mass flow meter operating by the Coriolis principle
US5318500A (en) 1992-10-15 1994-06-07 Eli Lilly And Company Method for controlling intermittently discharged centrifuges
EP0831306A1 (fr) 1996-09-19 1998-03-25 Oval Corporation Débitmètre Coriolis
EP1840537A2 (fr) 2001-08-29 2007-10-03 Micro Motion, Inc. Détermination de la proportion d'un composant majoritaire d'un fluide à l'aide d'un débitmètre à effet de Coriolis
EP1798536A1 (fr) 2003-09-29 2007-06-20 Micro Motion, Inc. Mesure de température avec un débitmètre de Coriolis
WO2011083036A2 (fr) 2010-01-08 2011-07-14 Endress+Hauser Meßtechnik GmbH+Co. KG Système pour mesurer la viscosité d'un liquide à température régulée et homogène
WO2011093784A1 (fr) 2010-01-29 2011-08-04 Alfa Laval Corporate Ab Systeme comprenant un separateur centrifuge et son procede de commande
EP2644278A1 (fr) 2012-03-27 2013-10-02 Alfa Laval Corporate AB Séparateur centrifuge et procédé de commande de décharge intermittente

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ANONYMOUS: "Badger Meter Europa", CORIOLIS, 1 January 2000 (2000-01-01), pages 1 - 8, XP055954303
HYLTON T. D.: "An evaluation of a dual Coriolis meter system for in-line monitoring of suspended solids concentrations in radioactive slurries", CHEMICAL TECHNOLOGY DIVISION, 1 September 2000 (2000-09-01), pages 1 - 56, XP055954302

Also Published As

Publication number Publication date
DE102013111586A1 (de) 2015-04-23
US20160271625A1 (en) 2016-09-22
EP3060351A1 (fr) 2016-08-31
CN105658337A (zh) 2016-06-08
CA2925202C (fr) 2021-06-01
WO2015059089A1 (fr) 2015-04-30
CA2925202A1 (fr) 2015-04-30
US10022729B2 (en) 2018-07-17

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