EP1294488B1 - Separateur cyclone a structure interieure centrale - Google Patents

Separateur cyclone a structure interieure centrale Download PDF

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Publication number
EP1294488B1
EP1294488B1 EP01936435A EP01936435A EP1294488B1 EP 1294488 B1 EP1294488 B1 EP 1294488B1 EP 01936435 A EP01936435 A EP 01936435A EP 01936435 A EP01936435 A EP 01936435A EP 1294488 B1 EP1294488 B1 EP 1294488B1
Authority
EP
European Patent Office
Prior art keywords
built
conical
central
housing
cyclone separator
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
EP01936435A
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German (de)
English (en)
Other versions
EP1294488A1 (fr
Inventor
Peter Hoffmann
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.)
Hosokawa Alpine AG
Original Assignee
Hosokawa Micron GmbH
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Filing date
Publication date
Application filed by Hosokawa Micron GmbH filed Critical Hosokawa Micron GmbH
Publication of EP1294488A1 publication Critical patent/EP1294488A1/fr
Application granted granted Critical
Publication of EP1294488B1 publication Critical patent/EP1294488B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
    • B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/08—Vortex chamber constructions
    • B04C5/103—Bodies or members, e.g. bulkheads, guides, in the vortex chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks

Definitions

  • the invention also relates to a method for influencing the particle size distribution of powders using a cyclone separator of this type.
  • the prior art also includes the content of the specifications FR-25 80 195 A, EP-468 426 A and FR-11 23 112 A. They disclose classifier, each having a housing, a sifting wheel disposed therein and internals therein. The internals limit gap areas, in each of which a visual effect takes place.
  • the present invention has for its object to provide a cyclone separator of the known type with improved Klassierseigenschaften, thereby expanding its scope.
  • a controlled flow guidance is achieved which, compared with the prior art, provides improved classification results. It is essential that the lower, cone-shaped installation forms a defined gap with the housing. This gap is decisive for the improved classification properties of the cyclone separator according to the invention. By adjusting the gap size, it is possible to influence the grain distribution of the powders to be processed.
  • the housing of the cyclone separator 1 is denoted by 2, its upper portion by 3, its central, conically downwardly tapering portion by 4 and its lower portion by 5.
  • the upper section 3 is a separator 6. Only the classifier wheel is shown schematically.
  • the upper portion is laterally equipped with a carrier gas / product inlet 7 (preferably tangentially arranged) and with a carrier gas / fines discharge 8 (centrally located).
  • the axis of the system is designated 9.
  • the middle section 4 there are two centrally arranged, rotationally symmetrical internals. On the one hand, it is an upwardly and downwardly open, (at least in the region of its lower portion) downwardly tapered mounting 10, whose upper diameter is greater than the diameter of the prepareerrades 6. It can extend into the upper, preferably cylindrical portion 3 of the housing 2 hineineruiten and ends immediately below the prepareerrades 6. Below the installation 10 is the second installation 11, which is at a distance below the lower opening the mounting 10 is arranged and has the shape of a downwardly widening cone sheath.
  • This conical installation 11 is mounted height adjustable on the installation 10.
  • a mounted on the mounting 10 strut 12 is provided, on which a support 13 of the cone 11 in the height adjustable, for example via a thread, is supported.
  • the lower housing section 5 is equipped with a coarse material outlet not shown in detail (indicated by the arrow 14).
  • a coarse material outlet not shown in detail (indicated by the arrow 14).
  • pipe connections 15 are provided for the supply of secondary gases, preferably secondary air. These can open radially into the lower housing section 5 (FIGS. 1, 4 and 5).
  • Tangentially opening pipe connections 15 are shown in FIGS. 2 and 3.
  • the solutions according to these figures differ in the direction of rotation of the vortices generated by the incoming secondary air streams (arrows 16, 17).
  • the product / carrier gas flow enters tangentially in the height of the separator wheel 6 in the upper portion 3 of the housing 2. Very fine particles follow the carrier gas through classifier wheel 6 and leave the housing 2 through the carrier gas / fines discharge. The remaining portion of the registered product / carrier gas stream flows in the annular space between the housing 10 and the outer housing 2 in spiral tracks down.
  • the installation 10 has the well-known purpose of separating the carrier gas / particle streams directed upwards in the peripheral region and upwards in the central region.
  • the lower installation 11 forms a defined gap 18 with the outer housing 2. In the region of this gap, a further screening of the downwardly directed carrier gas / particle flows takes place. This sighting is especially effective By means of secondary air, supplied via the pipe connections 15 at the lower housing section 5, a countercurrent is generated in the region of the gap 18. It may be advantageous to supply the secondary air tangentially, either in the same direction or in opposite directions with or for the supply of the carrier gas / particle flow. The separated in the gap 18 fine material is passed through the interior of the installation 10 again to the separator 6. The product that passes through the gap 18 is discharged as coarse material.
  • the conical installation 11 has, on the one hand, the task of preventing a renewed rise of the product located in the lower region of the housing 2 due to flow turbulences.
  • the size of the gap 18 influences the fines content of the fines. Characterized in that the size of the gap 18 is adjustable, and the fine fraction can be varied at the fines.
  • the installation 10 has over its entire height a conical, downwardly tapering shape.
  • the plane of its upper opening lies directly below the reformerrades 6.
  • the plane of its lower opening is in the range of the average height of the conical portion 4 of the outer housing. 2
  • FIGs 4 and 5 show further designs of the installation 10. It has similar to the housing 2 different sections.
  • a lower conical portion 10a and an upper cylindrical portion 10 b are provided.
  • the transition from cylindrical to conical is about the same height as the outer housing 2 (transition from section 3 to section 4).
  • a conically downwardly widening section 10c first adjoins the upper opening of the installation 10. This portion may transition, as shown in Figure 5, into the cylindrical portion 10b or directly into the conical downwardly tapering portion 10a.
  • the cyclone separator according to the invention not only has improved classification properties; In addition, it makes it possible to specifically influence the size of the fine fraction of a fine-grained powder.
  • the fine fraction ⁇ 10 ⁇ can be varied within relatively large ranges. Simply by changing the secondary air volume flow or the peripheral speed of the classifier wheel, the fine fraction can already be set in a range which lies between a first (smaller) value and a second value increased by up to 70%.
  • this particle size distribution can be influenced by changing the size of the gap 18.
  • the size of the gap 18 was about 10 mm (with a diameter of the lower edge of the cone 11 of about 130 cm). By changing the height of the cone 11, the gap 18 is adjustable over a wide range.

Landscapes

  • Cyclones (AREA)
  • Polarising Elements (AREA)

Claims (10)

  1. Séparateur à cyclone (1) avec un boîtier s'étendant verticalement (2), avec une section supérieure de boîtier (3), dans lequel se trouve un séparateur (6) avec une roue de séparateur et qui est équipé d'une entrée de gaz porteur et de produit (7) ainsi que d'une évacuation de gaz porteur et de particules fines (8), avec une section médiane de boîtier (4), qui se rétrécit en cône vers le bas et dans laquelle se trouve un élément central (10), s'étendant jusque dans la section supérieure de boîtier (3), de préférence jusqu'à l'extrémité inférieure des lames de roue du séparateur, servant à la séparation des courants de gaz porteur et de particules, typiques des cyclones, dirigés vers le bas dans la région périphérique et vers le haut dans la région centrale, ainsi que d'une section inférieure de boîtier (5), qui est équipée d'une évacuation des grosses particules (14) et d'au moins un raccordement tubulaire (15) pour une arrivée d'air secondaire, caractérisé en ce que l'ouverture inférieure de l'élément central (10) se trouve à hauteur de la section conique de boîtier (4), qu'en dessous de l'ouverture inférieure est disposé un autre élément interne (11), qui a la forme d'un cône s'évasant vers le bas et qui est fixé à l'élément central (10) se trouvant au-dessus à une distance telle que, dans la région du rebord inférieur de l'élément central (10), il se produit une séparation par déviation, et que l'autre élément interne (11) forme avec le boîtier (2) une fente (18) dans laquelle le courant de gaz porteur et de particules dirigé vers le bas dans la région périphérique et un courant d'air secondaire amené par le raccordement tubulaire (15) se rencontrent et provoquent une séparation à contre-courant.
  2. Séparateur à cyclone selon la revendication 1, caractérisé en ce que l'élément central (10) est aussi de forme conique en se rétrécissant vers le bas à hauteur de la section conique de boîtier (4).
  3. Séparateur à cyclone selon la revendication 2, caractérisé en ce que la conicité de l'élément interne (10) et celle de la section de boîtier (4) sont à peu près les mêmes.
  4. Séparateur à cyclone selon les revendications 1, 2 ou 3, caractérisé en ce que le rebord extérieur de l'élément interne en forme de cône (11) se trouve dans la région inférieure de la section conique de boîtier (4).
  5. Séparateur à cyclone selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément interne inférieur en forme de cône (11) est réglable en hauteur.
  6. Séparateur à cyclone selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'élément central (10) a une forme cylindrique dans la région de la section supérieure de boîtier (3).
  7. Séparateur à cyclone selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'à l'ouverture supérieure de l'élément central (10) se raccorde une section (10c) qui s'élargit vers le bas en forme de cône.
  8. Séparateur à cyclone selon l'une quelconque des revendications précédentes, caractérisé en ce que sur la section inférieure de boîtier (15), un ou plusieurs raccordement(s) tubulaire(s) (15) pour une arrivée d'air dirigée radialement ou tangentiellement est/sont prévu(s).
  9. Dispositif selon la revendication 8, caractérisé en ce que l'admission de gaz porteur et de produit (7) et au moins un raccordement tubulaire (15) sont disposés tangentiellement de telle sorte que les tourbillons de gaz produits ont des directions de rotation opposées.
  10. Procédé pour l'exploitation d'un séparateur à cyclone (1) avec un boîtier s'étendant verticalement (2), avec une section supérieure de boîtier (3), dans lequel se trouve un séparateur (6) avec une roue de séparateur et qui est équipé d'une entrée de gaz porteur et de produit (7) ainsi que d'une évacuation de gaz porteur et de particules fines (8), avec une section médiane de boîtier (4), qui se rétrécit en cône vers le bas et dans laquelle se trouve un élément central (10), s'étendant jusque dans la section supérieure de boîtier (3), de préférence jusqu'à l'extrémité inférieure des lames de roue du séparateur, servant à la séparation des courants de gaz porteur et de particules, typiques des cyclones, dirigés vers le bas dans la région périphérique et vers le haut dans la région centrale, ainsi que d'une section inférieure de boîtier (5), qui est équipée d'une évacuation des grosses particules (14) et d'au moins un raccordement tubulaire (15) pour une arrivée d'air secondaire, dans lequel le séparateur à cyclone (1) présente en outre les caractéristiques que l'ouverture inférieure de l'élément central (10) se trouve à hauteur de la section conique de boîtier (4), qu'en dessous de l'ouverture inférieure est disposé un autre élément interne (11), qui a la forme d'un cône s'évasant vers le bas et qui est fixé à l'élément central (10) se trouvant au-dessus, à une distance telle que, dans la région du rebord inférieur de l'élément central (10), il se produit une séparation par déviation, et que 1'autre élément interne (11) forme avec le boîtier (2) une fente (18) dans laquelle le courant de gaz porteur et de particules dirigé vers le bas dans la région périphérique et un courant d'air secondaire arrivé par le raccordement tubulaire (15) se rencontrent et provoquent une séparation à contre-courant, caractérisé en ce qu'on exerce de l'influence sur la partie fine de la répartition granulométrique en changeant la vitesse de rotation du séparateur (6), la quantité d'air secondaire amenée et/ou la hauteur de l'élément interne en forme de cône (11).
EP01936435A 2000-06-23 2001-06-06 Separateur cyclone a structure interieure centrale Expired - Lifetime EP1294488B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10030705 2000-06-23
DE10030705A DE10030705A1 (de) 2000-06-23 2000-06-23 Zyklonsichter mit zentralen Einbau
PCT/EP2001/006411 WO2001097976A1 (fr) 2000-06-23 2001-06-06 Separateur cyclone a structure interieure centrale

Publications (2)

Publication Number Publication Date
EP1294488A1 EP1294488A1 (fr) 2003-03-26
EP1294488B1 true EP1294488B1 (fr) 2006-04-19

Family

ID=7646603

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01936435A Expired - Lifetime EP1294488B1 (fr) 2000-06-23 2001-06-06 Separateur cyclone a structure interieure centrale

Country Status (6)

Country Link
US (1) US6957740B2 (fr)
EP (1) EP1294488B1 (fr)
AT (1) ATE323555T1 (fr)
DE (2) DE10030705A1 (fr)
ES (1) ES2264688T3 (fr)
WO (1) WO2001097976A1 (fr)

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DE10352525B9 (de) * 2003-11-05 2009-07-23 Neuman & Esser Gmbh Mahl- Und Sichtsysteme Zyklonsichter
US20070107809A1 (en) * 2005-11-14 2007-05-17 The Regents Of The Univerisity Of California Process for making corrosion-resistant amorphous-metal coatings from gas-atomized amorphous-metal powders having relatively high critical cooling rates through particle-size optimization (PSO) and variations thereof
US7434694B1 (en) 2006-09-22 2008-10-14 Fisher-Klosterman, Inc. Cyclone separator with stacked baffles
GB0914738D0 (en) * 2009-08-24 2009-09-30 Cambridge Consultants Inhalers
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CN101920227A (zh) * 2010-08-11 2010-12-22 芜湖纽麦特新材料有限公司 塑料粒子分离器的旋风机构
WO2013047177A1 (fr) * 2011-09-29 2013-04-04 株式会社カシワバラ・コーポレーション Dispositif de traitement de séparation de matériau en poudre et granuleux, procédé de traitement de séparation de matériau en poudre et granuleux, et système de traitement de séparation et de récupération de matériau en poudre granuleux
FI123720B (fi) * 2011-10-17 2013-10-15 Maricap Oy Pneumaattisen materiaalinsiirtojärjestelmän erotuslaite ja menetelmä
DE102013101517A1 (de) * 2013-02-15 2014-08-21 Thyssenkrupp Resource Technologies Gmbh Sichter und Verfahren zum Betreiben eines Sichters
CN103357524A (zh) * 2013-07-29 2013-10-23 神池县粮油机械研究所 一种淘洗方法及其设备
USD857071S1 (en) * 2017-01-24 2019-08-20 Superior Industries, Inc. Hydrocyclone inlet head
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CN106064150A (zh) * 2016-07-27 2016-11-02 无锡市华通电力设备有限公司 一种旋转式粉煤灰专用分级机
AT522286B1 (de) * 2019-04-12 2022-04-15 Erema Eng Recycling Maschinen & Anlagen Gmbh Vorrichtung zum Abkühlen von partikelförmigen Materialien
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Also Published As

Publication number Publication date
DE10030705A1 (de) 2002-01-03
DE50109555D1 (de) 2006-05-24
ATE323555T1 (de) 2006-05-15
US6957740B2 (en) 2005-10-25
WO2001097976A1 (fr) 2001-12-27
EP1294488A1 (fr) 2003-03-26
US20040108256A1 (en) 2004-06-10
ES2264688T3 (es) 2007-01-16

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