EP2704840B1 - Centrifugeuse avec des disques tronconiques - Google Patents

Centrifugeuse avec des disques tronconiques Download PDF

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Publication number
EP2704840B1
EP2704840B1 EP12715966.3A EP12715966A EP2704840B1 EP 2704840 B1 EP2704840 B1 EP 2704840B1 EP 12715966 A EP12715966 A EP 12715966A EP 2704840 B1 EP2704840 B1 EP 2704840B1
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EP
European Patent Office
Prior art keywords
separator
centrifuge
disk
surface structuring
plate
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Active
Application number
EP12715966.3A
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German (de)
English (en)
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EP2704840A2 (fr
Inventor
Julian KÖNIG
Verena GRÖNE
Sarah Ossenbrink
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GEA Mechanical Equipment GmbH
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GEA Mechanical Equipment GmbH
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Application filed by GEA Mechanical Equipment GmbH filed Critical GEA Mechanical Equipment GmbH
Publication of EP2704840A2 publication Critical patent/EP2704840A2/fr
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Classifications

    • 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
    • B04B7/00—Elements of centrifuges
    • B04B7/08—Rotary bowls
    • B04B7/12—Inserts, e.g. armouring plates
    • B04B7/14—Inserts, e.g. armouring plates for separating walls of conical shape

Definitions

  • the invention relates to a centrifuge according to the preamble of claim 1.
  • a generic centrifuge with a Trenntellerver is for example in the DE 10 2008 051 867 A1 disclosed.
  • Separator plates are commonly made of metal. From the EP 1 644 121 B1
  • separation plates for a centrifuge are known, which have a polyfluorinated coating. Usually, tabs in the form of webs or points are formed on a separating plate.
  • a centrifugal separator with a stationary during operation housing and a rotatably mounted therein on a shaft plate set, the separation plates have a porous structured surface is made of DE 10 2008 030 028 A1 known.
  • the state of the art also includes the EP 0 320 105 A1 , in which it is proposed to provide the separation plates with flow influencing parts, which are applied to the surface of the separator plate top. These have the task to prevent the formation of a so-called. Ekman für on the separation plate.
  • the flow influencing parts have a square shape. Although solids are increasingly being deposited on such a surface structuring of a separating plate, the flow-influencing parts hinder the particle transport on the separating plate in the direction of the tabs. In addition, the flow of the liquid to be clarified is hindered by the flow influencing parts. As a result, it can lead to a back-mixing of the liquid with the deposited on the flow influencing parts solid particles.
  • Solid particles can be guided or transported in different ways on the separation plate. It has proven to be beneficial to form the surface structuring as microgrooves, which are preferably arranged obliquely, arcuately or in a herringbone pattern on a tray segment.
  • Microgrooves preferably have a groove width of between 0.1-500 ⁇ m, particularly preferably between 10-150 ⁇ m, for the attachment of solid particles. They have a groove depth of 0.1-250 microns, preferably between 10-100 microns. In this case, individual microgrooves preferably extend parallel to one another and are preferably spaced at a distance of 0.05 mm-50 mm from the adjacent microgroove.
  • the filling of solid particles takes place in the radial direction, for example, to a tab or the edge of the plate, provided that the microgrooves at an angle of 40-60 ° to a radial surface structuring or to the tabs.
  • the strength of the surface structuring on the separating plate increases in the radial direction up to the outer edge of the plate.
  • solid particles which settle in the region of the outer rim of the plate can be absorbed by deeper microgrooves, while smaller solid particles which settle in a plate region which is closer to the inner edge of the plate are accommodated by shallower microgrooves.
  • the separating plate can also have an abrasion-resistant coating into which the surface structuring is introduced. It is in particular of Advantage, if the coating is a lacquer, which in addition to the guidance of the solid particles also allows a reduction of the surface tension. This allows the particles to slide better on the surface of the separation plate and thus be removed even faster from the surface of the separation plate.
  • the surface structuring can be done by engraving, for example by stamping or rolling with a roller or preferably by laser engraving.
  • the laser-induced removal of material of the coating or of the separator cell material on the separator plate underside may vary depending on the intensity of the laser beam.
  • the penetration depth or the strength of the surface structuring can be modulated in the radial direction.
  • a laser engraving also allows a surface structuring on ceramic or glass-like coatings and in particular on particularly abrasion-resistant hard coatings.
  • the maximum height of the microgrooves is one-sixth of the distance of the separating plate to an adjacent separating plate, that is the so-called plate gap.
  • tabs For spacing the plates with each other serve tabs in the form of points or webs. These tabs, which are preferably designed as webs, can additionally be used to divert the solids in the radial direction.
  • a tab in cooperation with the separation plate form an elongate channel, which advantageously allows the solids to be discharged in the radial direction.
  • the tabs are formed on a first side on a plate area. Due to the edition the smooth flap surface on the uneven surface structuring, caused by the unevenness, for example in the range of micro-groove valleys, passages through which the solids enter the channel. This is advantageous, as this no additional inlet openings must be incorporated into the tab.
  • the average of the channel increases in the radial direction, i. to the outer edge of the plate, on.
  • the inner wall of the channel has no surface structuring.
  • the separation plate has an elongated depression along the channel. This elongated recess prevents u.a. a blockage of the passage openings in the channel.
  • Fig. 2 shows a separator designed as a separator, here as a nozzle separator, with a rotatable about a rotation axis D centrifugal drum 1, in each of which a Trenntellervers 2 from stacked or stacked Trenntellern 3, 3 'is inserted.
  • the function of such separators with an inlet 4, a solids chamber 5 and 6 processes, 7 has long been well known and therefore needs no further explanation.
  • the axis of rotation D is vertically aligned here and the drum is biconical.
  • FIG. 1 shows a schematic representation of a separation plate 3 according to the invention, which preferably consists of a metal sheet.
  • the separation plate 3 can each openings or recesses 11 (see Figure 3 ), which in combination in the assembled state with further separating discs 3 'form a climbing channel.
  • the separation plates 3 and 3 ' are arranged axially spaced from each other, so that between them in each case a gap, a so-called plate gap, is formed.
  • the separation plate 3 has a conical basic shape 9 (see Fig. 1 ), so that a sequence of several separation plates 3, 3 'also form a substantially conical separator plate package 2.
  • the separation plate 3 has an outer rim 12 and an inner rim 13, wherein the outer rim 12 has a larger circumference than the inner rim 13th
  • the separating plate 3 On the conical basic shape 9 of the separating plate 3 elevations are formed by tabs. These tabs serve as spacers and influence the flow and are designed, for example, as web tabs or point tabs. On the separation plate 3 so-called web tabs 10 are formed, for example, applied or embossed. In addition, the separating plate 3 has recesses 11 in the region of the outer plate rim 12.
  • the web tabs 10 divide the separator plate 2 into separator plate segments 14. On these separator plate segments 14, solids are separated from a liquid to be clarified. For a targeted derivation of the solid particles in the direction of the web tabs 10 of the adjacent separating plate and in particular for reducing backmixing of the solids, one or more plate segments 14 on the underside of the plate surface structuring, here in the form of microgrooves 15, on.
  • microgrooves 15 are impressed in the inwardly facing surface of a separation plate 3.
  • the microgrooves preferably run parallel to one another.
  • the surface structuring achieves a reduction in the backmixing of the solids deposited in the grooves and, on the other hand, supports the guidance of the solid particles or their transport in the direction of the web lugs 10 of the adjacent separation plate.
  • the solid particles collect and are guided along a web tab 10 radially to the outer periphery of the plate 3 and to the outer rim 13, from where they slip off into the solids space 5 of the centrifuge.
  • Fig. 2 represents a schematic diagram of a Tellerseparators.
  • Figure 3 shows the separation plate 3 from below, ie in the direction of III, the FIG. 1 on which the web tabs 10 are arranged in the radial direction to the axis of rotation D.
  • These web tabs 10 divide the separating plate 3 into a total of eight separating plate segments 14, which each already in Fig.1 have described surface structuring in the form of microgrooves 15.
  • the microgrooves 15, such as in Fig. 4 shown extend at an angle ⁇ of 40-90 ° to the radial of the surface structuring or arcuate to the web tabs 10 toward.
  • the angle of the microgrooves to the radial surface of the surface structuring is constant, so that the microgrooves are arranged in an arcuate overall along the plate segment and in the plan view of the Figure 3 run almost linearly along the plate segment 15.
  • the distance between the microgrooves to each other is preferably 0.05 mm-50 mm, more preferably 0.5-5 mm.
  • the microgrooves preferably run parallel to one another Fig. 4 shows a partial section of a separation plate with multiple microgrooves 21, which, as well as the microgrooves Fig. 3 , extend at an angle ⁇ of preferably averaged 40-90 ° to the radial on the underside of a plate segment 20.
  • Fig. 5 shows a partial section of a separating plate with partially interrupted microgrooves 28 which are formed on the underside of a plate segment 29.
  • Fig. 6 represents a herringbone pattern of microgrooves 23, so a pattern of opposing microgrooves, which at an angle of preferably 40-60 ° to the radial are arranged on the underside of a plate segment 22.
  • the microgrooves 23 may for example also be arranged mirror-symmetrically to one another.
  • Fig. 7 an arcuate arrangement of the microgrooves 25 is shown, wherein the shape of the arcs from a constant angle between the tangents of the arc and the radial to the axis of rotation. This is preferably 40-70 °.
  • the difference between elevations and depressions in the surface structuring should preferably amount to no more than one sixth of the height of the plate gap.
  • the height of the microgrooves can vary on a separating plate.
  • the groove height may increase with the solids concentration or with increasing diameter of the separation plate.
  • Fig. 8 shows a partial section of a separating plate 30 with a total of four successive Trenntellersegmenten, 31, 32, 33 and 34.
  • a plurality of double lugs 35 are formed, which divide the conical separating plate 30 in said separator plate segments.
  • the double flaps 35 are fixed on a first side 38 on the surface structuring 39 of one of said separating plate segments.
  • the determination can be done for example by spot welding.
  • On the opposite second side 47 of the double lug 35 this is determined on a flat surface portion 40 of the subsequent Abstellellersegments, as for example, in Fig. 9a-1 is shown in more detail.
  • the absorption capacity of the channel 41 can be additionally increased by an elongated recess is incorporated in the separation plate in the area which is covered by the double lug.
  • the channel 41 increases in diameter in the radial direction B, so as to avoid a blockage with solids.
  • channel 41 extends to the outer edge 12, so that the solids are discharged directly into the solids space 5. In this way, backmixing at the channel outlet is advantageously prevented.
  • a permeable tab is shown with a channel, wherein the side 38, 44 or 46 of a corresponding tab is configured differently, in particular with regard to the passage openings in a corresponding channel 41st
  • a surface structuring can be done in various ways.
  • the surface structuring can be incised by means of a suitable device or can be introduced by means of a suitable grading roller which, for example, is itself grooved along the circumference.
  • the surface structuring can be predetermined by a stamp before or during the leveling of the separation plate.
  • the stamp should be made of a harder material than the separation plate itself, for example tungsten carbide.
  • the surface structuring can therefore also take place by embossing and / or rolling in the surface structuring.
  • the surface structuring can also be predetermined by laser treatment.
  • the material is removed from the Trenntellerober Structure by a laser, thereby generating microgrooves.
  • a coating by a paint dispersion for example as a stoving enamel, are applied to the disk surface and through mechanical treatment carried out a surface structuring.
  • the lacquer layer is cured, for example by a firing process. Paints and coatings, for example of polyfluorinated hydrocarbon compounds, which additionally lower the surface tension on the interface between the solid and the plate material due to low coefficients of friction, thereby additionally promoting particle transport to a web flap or into the channel of a double strap, are particularly suitable.
  • ceramic coatings of a release plate come into consideration in principle for a surface structuring.

Landscapes

  • Centrifugal Separators (AREA)

Claims (15)

  1. Centrifugeuse, en particulier séparateur ou centrifugeuse à vis à bol plein, avec un tambour centrifuge capable de rotation autour d'un axe de rotation D, dans lequel est disposé un paquet de disques de séparation (2) fait de disques de séparation (3, 3', 30) coniques empilés ayant chacun une face supérieure de disque de séparation et une face inférieure de disque de séparation, un au moins ou plusieurs des disques de séparation (3, 3', 30) présentant au moins par zones une structure de surface (15, 21, 23, 25, 28, 39) sur la face inférieure du disque de séparation, le disque de séparation (3, 3', 30) étant conçu pour le transport de particules et des pattes (10, 26, 35) étant disposées sur le disque de séparation (3, 3', 30), caractérisée en ce que la structure de surface est conformée comme des micro-rainures, la hauteur maximale des micro-rainures (15, 21, 23, 25, 28, 39) représentant un sixième de la distance entre le disque de séparation (3, 30) et un disque de séparation (3') voisin.
  2. Centrifugeuse selon la revendication 1, caractérisée en ce que les micro-rainures (15, 21, 23, 25, 28, 39) sont formées sur la face inférieure du disque de séparation.
  3. Centrifugeuse selon la revendication 1, caractérisée en ce que les micro-rainures (15, 21, 23 25, 39) sont disposées en oblique, en arc de cercle ou en arêtes de poisson par rapport au sens radial sur un segment de disque (14, 20, 22, 24, 29, 31, 32, 33, 34).
  4. Centrifugeuse selon l'une des revendications 2 ou 3, caractérisée en ce que les micro-rainures (15, 21, 23, 25, 28, 39) forment un angle (α) de 40° à 90° par rapport à un rayon du disque de séparation (3, 3', 30) ou sont dirigées vers des pattes (10, 26, 35) disposées sur le disque de séparation (3, 3', 30).
  5. Centrifugeuse selon l'une des revendications 2 à 4, caractérisée en ce que la profondeur de la structure de surface (15, 21, 23, 25, 28, 39) sur le disque de séparation (3, 3', 30) augmente dans le sens radial (B) jusqu'au bord extérieur (12) du disque.
  6. Centrifugeuse selon l'une des revendications précédentes, caractérisée en ce que le disque de séparation (3, 3', 30) présente sur sa face inférieure un revêtement doté de la structure de surface (15, 21, 23, 25, 28, 39).
  7. Centrifugeuse selon l'une des revendications précédentes, caractérisée en ce que le revêtement est un vernis destiné à réduire la tension superficielle.
  8. Centrifugeuse selon la revendication 1, caractérisée en ce que les pattes (10, 26, 35) sont conformées comme des barrettes.
  9. Centrifugeuse selon l'une des revendications précédentes, caractérisée en ce qu'une patte (35) et le disque de séparation (30) forment un canal allongé (41).
  10. Centrifugeuse selon l'une des revendications précédentes, caractérisée en ce que les pattes (35) sont disposées sur une première face (38) sur un segment de disque (31, 32, 33, 34).
  11. Centrifugeuse selon la revendication 9, caractérisée en ce que le passage du canal (41) augmente dans le sens radial (B).
  12. Centrifugeuse selon la revendication 9 ou 11, caractérisée en ce que la paroi intérieure du canal (41) ne présente pas de structure de surface (15, 19, 21, 23, 25, 28, 39).
  13. Centrifugeuse selon la revendication 9, 11 ou 12, caractérisée en ce que le disque de séparation (3, 3', 30) présente un renfoncement allongé le long du canal (41).
  14. Centrifugeuse selon l'une des revendications précédentes, caractérisé en ce que le disque de séparation (3, 3', 30) se compose d'une tôle d'acier.
  15. Procédé pour la fabrication d'une centrifugeuse selon l'une des revendications précédentes, caractérisé en ce que la structure de surface (15, 21, 23, 25, 28, 39) est obtenue par gravure, de préférence par gravure au laser.
EP12715966.3A 2011-05-02 2012-04-17 Centrifugeuse avec des disques tronconiques Active EP2704840B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011050046A DE102011050046A1 (de) 2011-05-02 2011-05-02 Zentrifuge
PCT/EP2012/056975 WO2012150125A2 (fr) 2011-05-02 2012-04-17 Centrifugeuse

Publications (2)

Publication Number Publication Date
EP2704840A2 EP2704840A2 (fr) 2014-03-12
EP2704840B1 true EP2704840B1 (fr) 2018-09-05

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ID=45998333

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12715966.3A Active EP2704840B1 (fr) 2011-05-02 2012-04-17 Centrifugeuse avec des disques tronconiques

Country Status (6)

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US (1) US20140221187A1 (fr)
EP (1) EP2704840B1 (fr)
CN (1) CN103547374B (fr)
DE (1) DE102011050046A1 (fr)
TR (1) TR201815928T4 (fr)
WO (1) WO2012150125A2 (fr)

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WO2025002645A1 (fr) 2023-06-26 2025-01-02 Hengst Se Procédé de production d'une plaque de séparateur pour un séparateur d'aérosol rotatif, et moule et plaque de séparateur pour un séparateur d'aérosol rotatif

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CA2856025C (fr) * 2011-11-28 2017-05-16 Alfa Laval Corporate Ab Separateur centrifuge ayant des proprietes anti-encrassement
DE102013101654A1 (de) * 2013-02-20 2014-08-21 Gea Mechanical Equipment Gmbh Trenntellerpaket
EP2944391A1 (fr) 2014-05-13 2015-11-18 Alfa Laval Corporate AB Séparateur par centrifugation
CN104043538B (zh) * 2014-07-07 2016-08-24 王成财 一种立式离心机
EP3085450B1 (fr) 2015-04-24 2020-02-26 Alfa Laval Corporate AB Séparateur centrifuge à pile de disques
CN105107642B (zh) * 2015-09-18 2018-05-08 威海戥同测试设备有限公司 一种离心式净油机碟片
EP3159063A1 (fr) 2015-10-20 2017-04-26 Björn Seeler Panier de revetement pour centrifugeuses dans des installations de peinture
CN105234007B (zh) * 2015-11-02 2017-10-17 迈安德集团有限公司 一种高速盘式脱水机
CN105214380B (zh) * 2015-11-02 2017-06-13 迈安德集团有限公司 一种微细粒矿浆浓缩系统及矿浆浓缩工艺
EP3173154A1 (fr) 2015-11-24 2017-05-31 Björn Seeler Panier de revetement pour installations de centrifugeuses
ES2830623T3 (es) * 2017-05-02 2021-06-03 Alfa Laval Corp Ab Un disco de separación para un separador centrífugo
US11331679B2 (en) * 2018-05-25 2022-05-17 Tetra Laval Holdings & Finance S.A. Centrifugal separator
DE102019130796A1 (de) * 2019-11-14 2021-05-20 Gea Mechanical Equipment Gmbh Trennteller, Trenntellerpaket und Zentrifuge mit dem Trenntellerpaket sowie Verfahren zur Herstellung des Trenntellers
EP3821984B1 (fr) * 2019-11-14 2022-06-29 Alfdex AB Empilement de disque, unité de rotor, séparateur centrifuge, procédé de fourniture d'empilement de disque et procédé de fourniture d'unité de rotor
CN110882860B (zh) * 2019-12-10 2021-12-10 黄春美 一种碟式离心机转鼓
KR20220125360A (ko) * 2020-01-24 2022-09-14 미쯔비시 가꼬끼 가이샤 리미티드 원심분리 장치 및 분리판
US12059691B2 (en) 2020-02-06 2024-08-13 Poet Research, Inc. Centrifuge that includes at least one discrete, flow interference member, and related systems and methods

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Publication number Priority date Publication date Assignee Title
WO2025002645A1 (fr) 2023-06-26 2025-01-02 Hengst Se Procédé de production d'une plaque de séparateur pour un séparateur d'aérosol rotatif, et moule et plaque de séparateur pour un séparateur d'aérosol rotatif
DE102023116761A1 (de) 2023-06-26 2025-01-02 Hengst Se Verfahren zum Herstellen eines Abscheidetellers für einen Aerosol-Rotationsabscheider

Also Published As

Publication number Publication date
CN103547374B (zh) 2015-07-01
EP2704840A2 (fr) 2014-03-12
DE102011050046A1 (de) 2012-11-08
WO2012150125A2 (fr) 2012-11-08
TR201815928T4 (tr) 2018-11-21
CN103547374A (zh) 2014-01-29
US20140221187A1 (en) 2014-08-07
WO2012150125A3 (fr) 2012-12-27

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