EP1572371B2 - Centrifugeuse, en particulier separateur, pourvue de buses de sortie pour matieres solides et d'une protection contre l'usure - Google Patents

Centrifugeuse, en particulier separateur, pourvue de buses de sortie pour matieres solides et d'une protection contre l'usure Download PDF

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Publication number
EP1572371B2
EP1572371B2 EP03795895.6A EP03795895A EP1572371B2 EP 1572371 B2 EP1572371 B2 EP 1572371B2 EP 03795895 A EP03795895 A EP 03795895A EP 1572371 B2 EP1572371 B2 EP 1572371B2
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EP
European Patent Office
Prior art keywords
separator according
wear protection
basket
discharge
channel
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.)
Expired - Lifetime
Application number
EP03795895.6A
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German (de)
English (en)
Other versions
EP1572371B1 (fr
EP1572371A1 (fr
Inventor
Dieter Schulz
Jürgen LINNEMANN
Anton Kleimann
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 Mechanical Equipment GmbH
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GEA Mechanical Equipment GmbH
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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
    • B04B1/10—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
    • 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
    • B04B1/12—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 continuous discharge
    • 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

Definitions

  • the invention relates to a separator with a centrifugal drum, which has a drum shell, which is provided with solid-discharge nozzles.
  • Such a separator is from the US 3,108,952
  • solid-discharge nozzles are angularly offset from one another in the region of the largest inner diameter of the centrifugal drum.
  • nozzle bodies are used in each case in bores of the drum shell, which do not extend radially outward, but are aligned obliquely to the respective radial direction in order to use the Beschettnists bin emerging from the nozzle product phase, which reduces the energy required to rotate the centrifugal drum.
  • the outlet nozzles are arranged inclined to the radial direction, the product jet emerging from the outlet nozzles can at least to a certain extent hit the drum outer wall or collide with it, which can cause considerable wear of the drum outer wall.
  • outlet nozzles each consist of a first sleeve with a centrally through the sleeve from the inside radially outwardly extending bore.
  • the first sleeves are inserted into the holes of the drum shell. In it is screwed in each case in its end region at an angle to the radial direction of a second sleeve, which also has a central bore, so that the emerging from the centrifugal drum product phase is first passed through the first sleeve radially outward and then through the second sleeve, from which he inclined to the radial direction against the direction of rotation of the separator emerges.
  • the DE 18 61 182 relates to a Siebschleudertrommel with perforations for the realization of the screening function, which are filled with hard metal grommets, wherein the drum outer shell is covered with carbide.
  • the invention aims to secure the generic separator in a simple manner better than in the prior art against wear by emerging from the solid particles product phase.
  • the wear protection devices consist of a wear-resistant material such as a steel or a hard metal or a ceramic or a combination or a composite of these materials or they are coated with such a material.
  • the outlet nozzles are provided with outlet openings oriented at an angle ⁇ + ⁇ inclined to the radial direction, and the angle ⁇ + ⁇ between the radial direction in the area of the outlet nozzles and the orientation of the outlet openings is preferably equal to or less than 90 ° (eg between 70 and 85 ° ). Since especially in separators with such outlet nozzles locally a large wear of the drum shell occurs, the wear protection elements are of particular advantage here.
  • the orientation angle of the outlet openings to the radial direction (R) is particularly preferably between 70 and 90 °.
  • the invention is for separators whose centrifugal drum has a vertical axis of rotation and is single or double conical, wherein the solids outlet nozzles are arranged in the region of the largest diameter of the centrifugal drum, and inserted from the outside into this.
  • the invention can be used with separators whose outlet openings are offset inwardly by a distance relative to the largest outer circumference or outer diameter of the centrifugal drum and which each have a recess in extension of the outlet openings in the drum shell which receive the wear protection elements.
  • the wear protection elements extend from the outlet openings to the outer edge of the drum shell, in order to ensure that the last-mentioned region of the centrifugal drum, which is particularly stressed according to the prior art, is protected against wear.
  • Fig. 1 shows a portion of a section through the drum shell 1 a centrifugal drum of a separator with a vertical axis of rotation and, for example, single or double conical geometry, which is provided with at least one, preferably a plurality of outlet nozzles 2 for solid.
  • the outlet nozzles 2 are formed from a sleeve body 3, which are each inserted in the radial direction of the centrifugal drum in here also radially extending holes 4 in the drum shell 1 (for example, screwed). They have sealing rings 22 on their outer circumference.
  • the drum shell has inside here in each case in front of the outlet nozzles 2 in the direction of the outlet nozzles 2 tapered recesses 21 which guide the solids to the outlet nozzles 2.
  • the outlet nozzles 2 are each provided with a central bore 7 extending from the drum interior 5 in the direction of the drum outer space 6, which extends in a first bore section 8 initially with a first diameter D1 in the radial direction from inside to outside and then into the first bore section 8 angularly aligned bore portion 9 merges with a diameter smaller relative to the first diameter D2.
  • the outlet opening 10 of the bore portion 9 is aligned in each case at an angle to the radial direction R, wherein the angle ⁇ + ⁇ between the radial direction R and the outlet opening 10 and the second bore portion 9 is preferably equal to or less than 90 °. In particular, it is between 70 and 90 °.
  • the outlet opening 10 is offset in each case by a distance a relative to the largest outer circumference or diameter of the centrifugal drum 28 and the drum shell inwards.
  • an groove-like depression or recess 11 formed at an angle to the radial direction must be formed in the drum shell 1, so that the product phase emerging from the outlet nozzles 2 injects as completely as possible outside on the drum shell 1.
  • each outlet nozzle 10 separately formed wear protection element 12, which preferably from the outlet openings 10 or from just behind the outlet openings 10 to the outer periphery of the drum shell 1 or extends beyond.
  • the wear protection elements 12 are formed here in an advantageous and easily producible manner as a plate-like body, which are each provided on the outside in the mounting position side with a kind of groove or groove 13, which in the mounting position of Fig. 1 and 2 points outward and advantageously serves as a guide and exit channel for the product phase emerging from the centrifugal drum 1 at an angle ⁇ + ⁇ to the radial direction R.
  • the centrifugal drum is protected by the wear protection elements 12 in the region of the recess 11 in a simple yet effective manner against wear.
  • the wear protection element 12 with a kind of integrally molded base plate 17 whose outer Edges as springs 15, 16 in two opposing grooves (indicated by dashed lines in Fig. 1b ) can be inserted in the lateral base region of the recess 11.
  • the wear protection elements 12 can be easily replaced in case of damage or own wear. In this way, u.U. also the life of the centrifugal drum itself be increased. Emphasize as special advantages and their ease of use and their basic suitability for retrofitting to existing centrifugal drums.
  • the bottom of the semi-cylindrical groove 13 is located at a distance b (in Fig. 1 it corresponds to the distance x) to Outlet opening 10 of the outlet nozzle 11 is offset inwardly, wherein the channel 13 may be aligned completely or in sections parallel or at an angle which is smaller than 30 °, in particular less than 20 °, at an angle to the second bore section 9 and to the outlet opening 10.
  • a first region 18 of the channel 13 preferably extends parallel to the second bore section 9 adjacent to the outlet opening 10, whose orientation is inclined by an angle ⁇ + ⁇ of less than 90 ° (here about 80 °, preferably between 70 and 85 °) to the radial direction also predetermines the exit angle of the product phase from the centrifugal drum, and a second area 19 is aligned somewhat further to the radial direction (angle ⁇ ), so that a kind of ramp 20 with a maximum height x above the bottom of the channel 13 is formed in the end area of the channel 13 which directs the part of the product stream impinging here somewhat further radially outwards and acts as a brake on this part of the product flow, which can have an advantageous effect during operation of the separator.
  • the wear protection elements 12 are suitable both for sleeve body 3 in the manner of Fig. 1 which terminate flush with the inside of the drum shell 1, as well as for sleeve body 3, which according to the type of Fig. 3 project something into the interior of the centrifugal drum 1, so that can form deposits around the sleeve body 3, which may have an advantageous effect on the product processing in certain products.
  • FIG. 1 and 3 extend the wear protection elements 12 from the outlet openings 10 to the outer edge of the recesses 11, so that the entire region of the recesses is protected against wear.
  • the ramps 20 as demolition edges extend in the longitudinal direction of the channel over less than half its length, in particular over a distance of up to 20mm, according to a preferred variant even only over a distance of 1-5 mm.
  • the bottom of the channel 13 is located just below the outlet opening 10.
  • the distance between the outlet opening and the bottom of the channel can - as well as their diameter - affect the way the product flow outlet.
  • the height x is significantly smaller than the distance b, so that the solid flows partly directly over the edge of the ramp 20.
  • the length of the wear protection elements 20 in the circumferential direction is less than in Fig. 1 ,
  • the geometry of the transition between the ramp 20 and the rest of the channel 13 may be arcuate or jumpy. It can also follow the geometry of a circular or exponential function. Preferably, the inclination of the ramp to the discharge direction of the solid from the outlet opening increases away.
  • the geometry of the wear protection elements 12 is adapted to the curvature of the drum shell 1, to ensure even here a protection.
  • the ramps 20 are radially outward beyond the outer circumference or largest diameter of the centrifugal drum, which further leads the product flow to the outside and helps to prevent it from touching the drum shell. It is virtually a kind of undercut 23 and an undercut tear-off edge formed.
  • the ramps are more or less the same Fig. 5 formed in the manner of a "ski jump", ie, they have in a first region 24 an angle ⁇ > 0 to the outlet direction of the product flow from the nozzle 10 and in the adjoining further region 25 a larger angle ⁇ + c ( ⁇ >0;c> 0) to the outlet direction of the product flow from the nozzle 3.
  • Fig. 9 shows a perspective view of a centrifuge according to the type Fig. 1 ,
  • the separately formed wear protection elements 12 with their groove or gutter. Against the direction of rotation, one of the wear protection elements is provided behind each outlet nozzle.
  • FIG. 10 shows a corresponding side view of the centrifugal drum or drum shell 1.

Landscapes

  • Centrifugal Separators (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Claims (18)

  1. Séparateur avec un panier centrifuge (28) présentant un axe de rotation vertical et qui est réalisé en cône simple ou double et avec une enveloppe de panier (1) pourvue d'au moins une ou plusieurs buses de sortie de matières solides (2), lesquelles buses de sortie de matières solides (2) sont insérées au niveau du plus grand diamètre du panier centrifuge (19) de l'extérieur dans celui-ci, caractérisé en ce que
    - respectivement au moins un dispositif de protection contre l'usure est disposé et/ou réalisé au niveau de l'enveloppe extérieure de panier (1) dans la zone des buses de sortie de matières solides (2),
    - les dispositifs de protection contre l'usure étant réalisés sous forme d'éléments de protection contre l'usure (12) séparés,
    - un des éléments de protection contre l'usure (12) séparé étant disposé, vu dans le sens contraire au sens de rotation, derrière chaque buse de sortie (2),
    - les éléments de protection contre l'usure (12) étant faits d'un matériau résistant à l'usure comme un acier ou un métal dur ou une céramique ou une combinaison ou un composite de ces matériaux ou sont revêtus d'un tel matériau,
    - les buses de sortie (2) présentent des ouvertures de sortie (10) inclinées d'un angle (α+β) par rapport à la direction radiale (R) et en ce que l'angle (α+β) entre la direction radiale (R) dans la zone des buses de sortie et l'orientation des ouvertures de sortie (10) est égal ou inférieur à 90°,
    - les ouvertures de sortie (10) étant disposées de manière décalée vers l'intérieur d'une certaine distance par rapport à la périphérie extérieure et/ou au diamètre extérieur le plus grand du panier centrifuge (28) et un évidement (11) étant respectivement réalisé en prolongement des ouvertures de sortie (10) dans l'enveloppe de panier (1) pour recevoir les éléments de protection contre l'usure (12),
    - lesquels éléments de protection contre l'usure (12) s'étendent des ouvertures de sortie (10) jusqu'au bord extérieur de l'enveloppe de panier (1), et
    - les éléments de protection contre l'usure (12) étant fixés au niveau de l'enveloppe de panier (1) avec des vis (14) et des éléments à rainure/languette (15, 16) correspondant les uns aux autres entre l'enveloppe de panier (1) et l'élément de protection contre l'usure (12).
  2. Séparateur selon la revendication 1, caractérisé en ce que l'angle d'orientation (α+β) des ouvertures de sortie (10) par rapport à la direction radiale (R) est compris de préférence entre 70 et 85°.
  3. Séparateur selon l'une des revendications précédentes, caractérisé en ce que les éléments de protection contre l'usure (12) sont réalisés sous forme de corps de type plaque, qui sont pourvus au niveau de leur côté extérieur d'une rainure ou d'un sillon (13), qui servent de canal de sortie pour une phase de produit sortant du panier centrifuge (28) selon l'angle (α+β) par rapport à la direction radiale.
  4. Séparateur selon l'une des revendications précédentes, caractérisé en ce que les éléments de protection contre l'usure (12) sont munis d'une plaque de base (17) dont les bords extérieurs peuvent être insérés comme des languettes (16) dans deux rainures (15) se faisant face dans la zone de base latérale de l'évidement (11).
  5. Séparateur selon la revendication 3, caractérisé en ce que le fond du sillon (13) est décalé vers l'intérieur d'une distance (b) par rapport à l'ouverture de sortie (10) de la buse de sortie (2) dans l'enveloppe de panier et en ce que le sillon (13) est dirigé complètement ou par zones parallèlement à l'ouverture de sortie (10) ou en formant un angle inférieur à 30°, en particulier inférieur à 20°, par rapport à celle-ci.
  6. Séparateur selon l'une quelconque des revendications 3 ou 5, caractérisé en ce que le sillon (13) se transforme en une rampe (20).
  7. Séparateur selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'une première zone (18) du sillon (13) s'étend à la suite de l'ouverture de sortie (10) parallèlement à la deuxième section d'alésage (9) et en ce qu'une deuxième zone (19) du sillon (13) est inclinée davantage par rapport à la direction radiale.
  8. Séparateur selon l'une quelconque des revendications précédentes, caractérisé en ce que les buses de sortie (2) formées par des corps de douille (3) se terminent à fleur avec le côté intérieur de l'enveloppe de panier (1).
  9. Séparateur selon l'une quelconque des revendications 1 à 7, caractérisé en ce que les buses de sortie (2) formées par des corps de douille (3) pénètrent quelque peu dans l'espace intérieur du panier centrifuge (28).
  10. Séparateur selon la revendication 6, caractérisé en ce que les rampes (20) s'étendent comme des bords de rupture dans le sens longitudinal du sillon (13) sur moins de la moitié de leur longueur, en particulier sur une distance allant jusqu'à 10 mm, de préférence sur 1 à 10 mm.
  11. Séparateur selon la revendication 6, caractérisé en ce que la géométrie du passage entre rampe et sillon (13) est en forme d'arc ou de saut.
  12. Séparateur selon la revendication 10, caractérisé en ce que la géométrie du passage entre rampe (20, 26) et sillon (13) suit la géométrie d'un cercle ou d'une fonction exponentielle.
  13. Séparateur selon la revendication 8, caractérisé en ce que l'inclinaison de la rampe (20, 26) par rapport à la direction de sortie des matières solides augmente depuis l'ouverture de sortie (10).
  14. Séparateur selon l'une quelconque des revendications précédentes, caractérisé ce que les buses de sortie (2) formées par des corps de douille (3) sont insérées respectivement dans la direction radiale du panier centrifuge dans des alésages (4) s'étendant de manière radiale dans l'enveloppe de panier (1).
  15. Séparateur selon l'une quelconque des revendications précédentes, caractérisé en ce que les buses de sortie (2) formées par des corps de douille (3) présentent un alésage (7) s'étendant de l'espace intérieur du panier (5) vers l'espace extérieur du panier (6), lesquelles buses s'étendent dans une première section d'alésage (8) d'abord avec un premier diamètre D1 dans la direction radiale de l'intérieur vers l'extérieur et passent ensuite dans une section d'alésage (9) dirigée en angle par rapport à la première section d'alésage (8) avec un diamètre D2 inférieur à celui du premier diamètre.
  16. Séparateur selon l'une quelconque des revendications 3 à 15, caractérisé en ce que la géométrie des éléments de protection contre l'usure (12) en prolongement du sillon (13) est adaptée à la courbure de l'enveloppe de panier.
  17. Séparateur selon l'une quelconque des revendications précédentes, caractérisé en ce que les éléments de protection contre l'usure, en particulier leurs rampes (20) dépassent radialement vers l'extérieur de la périphérie extérieure et/ou du diamètre extérieur de l'enveloppe de panier (1) du panier centrifuge (28).
  18. Séparateur selon la revendication 17, caractérisé en ce que la rampe forme un bord de rupture contre-dépouillé.
EP03795895.6A 2002-12-16 2003-12-15 Centrifugeuse, en particulier separateur, pourvue de buses de sortie pour matieres solides et d'une protection contre l'usure Expired - Lifetime EP1572371B2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20219551U DE20219551U1 (de) 2002-12-16 2002-12-16 Zentrifuge, insbesondere Separator, mit Feststoff-Austrittsdüsen
DE20219551U 2002-12-16
PCT/EP2003/014253 WO2004054719A1 (fr) 2002-12-16 2003-12-15 Centrifugeuse, en particulier separateur, pourvue de buses de sortie pour matieres solides et d'une protection contre l'usure

Publications (3)

Publication Number Publication Date
EP1572371A1 EP1572371A1 (fr) 2005-09-14
EP1572371B1 EP1572371B1 (fr) 2008-05-21
EP1572371B2 true EP1572371B2 (fr) 2019-12-04

Family

ID=32240626

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03795895.6A Expired - Lifetime EP1572371B2 (fr) 2002-12-16 2003-12-15 Centrifugeuse, en particulier separateur, pourvue de buses de sortie pour matieres solides et d'une protection contre l'usure

Country Status (9)

Country Link
US (1) US7614995B2 (fr)
EP (1) EP1572371B2 (fr)
CN (1) CN100427211C (fr)
AT (1) ATE395978T1 (fr)
AU (1) AU2003298185A1 (fr)
CA (1) CA2508258C (fr)
DE (2) DE20219551U1 (fr)
NO (1) NO344617B1 (fr)
WO (1) WO2004054719A1 (fr)

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EP4059608A1 (fr) * 2021-03-17 2022-09-21 Alfa Laval Corporate AB Séparateur centrifuge et élément de protection

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DE20219551U1 (de) * 2002-12-16 2004-04-29 Westfalia Separator Ag Zentrifuge, insbesondere Separator, mit Feststoff-Austrittsdüsen
KR101198425B1 (ko) * 2004-09-08 2012-11-06 알파 라발 코포레이트 에이비 원심 분리기 노즐과 상기 노즐을 원심 분리기 보울에삽입하는 방법과 장치
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DK178254B1 (en) * 2010-11-12 2015-10-12 Alfa Laval Corp Ab Centrifugal separator, abrasion resistant element and set of abrasion resistant elements for a centrifugal separator
US9393574B1 (en) * 2010-12-14 2016-07-19 Ray Morris Wear insert for the solids discharge end of a horizontal decanter centrifuge
EA032168B1 (ru) 2013-08-09 2019-04-30 Вир Минералс Австралия Лтд Устройство циклонного сепаратора и способ его производства
EP2962762B1 (fr) 2014-07-04 2021-03-24 Andritz Frautech S.r.l. Buse de décharge pour séparateur de buse
EP2962763A1 (fr) 2014-07-04 2016-01-06 Andritz Frautech S.r.l. Tambour de séparateur de buse
MX2018011526A (es) * 2016-03-24 2019-07-04 Fluid Quip Inc Rotor centrífugo con boquillas alternadas para usarse en una centrífuga de disco de boquillas.
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DE102017112553A1 (de) 2017-06-07 2018-12-13 Gea Mechanical Equipment Gmbh Verfahren zur Feststoffentleerung einer Zentrifuge
DE202018100291U1 (de) * 2018-01-18 2018-03-07 Gea Mechanical Equipment Gmbh Zentrifuge
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DE202023106479U1 (de) 2023-11-07 2025-02-10 Gea Westfalia Separator Group Gmbh Schleudertrommel einer Zentrifuge und Zentrifuge mit einer solchen Schleudertrommel

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4059608A1 (fr) * 2021-03-17 2022-09-21 Alfa Laval Corporate AB Séparateur centrifuge et élément de protection
WO2022194487A1 (fr) * 2021-03-17 2022-09-22 Alfa Laval Corporate Ab Séparateur centrifuge et élément de protection

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US20060166803A1 (en) 2006-07-27
CA2508258C (fr) 2008-09-09
ATE395978T1 (de) 2008-06-15
CA2508258A1 (fr) 2004-07-01
DE50309898D1 (de) 2008-07-03
EP1572371B1 (fr) 2008-05-21
AU2003298185A1 (en) 2004-07-09
EP1572371A1 (fr) 2005-09-14
CN1726084A (zh) 2006-01-25
NO344617B1 (no) 2020-02-10
NO20053445L (no) 2005-07-15
DE20219551U1 (de) 2004-04-29
WO2004054719A1 (fr) 2004-07-01
CN100427211C (zh) 2008-10-22
CA2508258F (fr) 2004-07-01
US7614995B2 (en) 2009-11-10

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