EP1020228B1 - Gaine d'entrée de fumées dans un séparateur cyclone - Google Patents

Gaine d'entrée de fumées dans un séparateur cyclone Download PDF

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Publication number
EP1020228B1
EP1020228B1 EP00400086A EP00400086A EP1020228B1 EP 1020228 B1 EP1020228 B1 EP 1020228B1 EP 00400086 A EP00400086 A EP 00400086A EP 00400086 A EP00400086 A EP 00400086A EP 1020228 B1 EP1020228 B1 EP 1020228B1
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EP
European Patent Office
Prior art keywords
cyclone
face
sheath
extrados
wall
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
EP00400086A
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German (de)
English (en)
Other versions
EP1020228A1 (fr
Inventor
Jean-Claude Semedard
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.)
Alstom Power Boiler SA
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Alstom Power Boiler SA
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Publication date
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Application filed by Alstom Power Boiler SA filed Critical Alstom Power Boiler SA
Publication of EP1020228A1 publication Critical patent/EP1020228A1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • F23J15/027—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using cyclone separators
    • 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
    • B04C5/02—Construction of inlets by which the vortex flow is generated, e.g. tangential admission, the fluid flow being forced to follow a downward path by spirally wound bulkheads, or with slightly downwardly-directed tangential admission
    • B04C5/04—Tangential inlets
    • 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

Definitions

  • the present invention relates to a fume inlet duct in a cyclone separator.
  • a separator is described in the document EP0763384 A1 .
  • the invention applies in particular, although not exclusively, to large installations, for example from 250 to 600 MW, which comprise several cyclone separators placed side by side at the exit of the hearth.
  • large installations for example from 250 to 600 MW, which comprise several cyclone separators placed side by side at the exit of the hearth.
  • space is lacking to correctly position the inlet duct of the separators because of the space requirement due to the passage of various beams.
  • the provision of the inlet duct of a cyclone separator at the outlet of a furnace is that shown Fig. 1 where schematically seen in view from above the cyclone separator 1 with its inlet sheath 2 at the outlet of the hearth 3.
  • This inlet sheath has two side faces 4 and 5, a floor face and a ceiling face not visible on this view.
  • the face 4 is called the intrados face and ends at the cyclone nose D, and the face 5 is called the extrados face.
  • the present invention aims to overcome this disadvantage and improve the efficiency of such cyclone separators.
  • the subject of the invention is thus a fume inlet sheath in a cyclone separator, said sheath comprising two lateral faces, one of which is called the extrados face and the other intrados face, the latter leading to the nose of the cyclone D, a ceiling face and a floor face, characterized in that at least one of the intrados and extrados faces has grooves inclined downwards from the outlet of the hearth to the cyclone separator.
  • Fig. 2 schematically shows a cyclone separator 1 with its inlet duct 2 in elevation.
  • the face extrados 5 has grooves 9. Such grooves may also be provided on the intrados face 4.
  • the Fig. 3 is simply a simplified sketch showing the fumes inlet section in sheath 2 in the direction of arrow F of the Fig. 2 and making it possible to identify the four faces of the sheath 2: intrados face 4, extrados face 5, ceiling face 10 and floor face 11.
  • These grooves 9 are inclined at an angle of between 5 and 25 ° relative to the horizontal.
  • the Fig. 4 is a diagram showing the section of the grooves. They advantageously have a height h of between 200 and 400 mm and a depth of less than 50 mm, and they are separated by solid portions 12 with a height h1 of between 100 and 300 mm.
  • This provision is intended to promote gravity separation at the entrance of the cyclone.
  • grooves are represented in the form of crenels at right angles, but these grooves could have a different section, without sharp corners for example.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Cyclones (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Description

  • La présente invention concerne une gaine d'entrée de fumées dans un séparateur cyclone. Un tel sépatateur est décrite dans le document EP0763384 A1 .
  • L'invention s'applique en particulier, bien que non limitativement, aux grosses installations, par exemple de 250 à 600 MW, qui comportent plusieurs séparateurs cyclones placés côte à côte à la sortie du foyer. Dans de telles installations, la place manque pour placer correctement la gaine d'entrée des séparateurs à cause de l'encombrement dû au passage de diverses poutres. Ainsi, classiquement, la disposition de la gaine d'entrée d'un séparateur cyclone à la sortie d'un foyer est celle représentée fig. 1 où l'on voit schématiquement en vue de dessus le séparateur cyclone 1 avec sa gaine d'entrée 2 à la sortie du foyer 3. Cette gaine d'entrée comporte deux faces latérales 4 et 5, une face de plancher et une face de plafond non visibles sur cette vue.
  • La face 4 est appelée face intrados et aboutit au nez de cyclone D, et la face 5 est appelée face extrados.
  • Cette disposition de gaine qui résulte, comme il a été dit de l'encombrement, n'est pas favorable à une bonne efficacité du séparateur.
  • En effet, compte tenu que la gaine est très courte, les solides présents en partie supérieure n'ont pas le temps de se décanter dans la gaine. Une grande partie de ces solides arrivent donc à l'entrée du cyclone par la partie supérieure de la gaine, d'où une proportion non négligeable est entraînée vers la sortie gaz du cyclone.
  • La présente invention a pour but de pallier cet inconvénient et d'améliorer l'efficacité de tels séparateurs cyclones.
  • L'invention a ainsi pour objet une gaine d'entrée de fumées dans un séparateur cyclone, ladite gaine comportant deux faces latérales dont l'une est appelée face extrados et l'autre face intrados, cette dernière aboutissant au nez du cyclone D, une face de plafond et une face de plancher, caractérisée en ce que l'une au moins des faces intrados et extrados comporte des rainures inclinées vers le bas depuis la sortie du foyer vers le séparateur cyclone.
  • L'invention va maintenant être décrite en se reportant au dessin annexé dans lequel :
    • La fig. 1, déjà commentée, représente schématiquement la disposition de l'art antérieur.
    • Les fig. 2, 3 et 4 sont trois vues schématiques permettant de voir la disposition selon l'invention.
  • En se référant à la fig. 2, on voit représenté schématiquement un séparateur cyclone 1 avec sa gaine d'entrée 2 en élévation. Conformément à l'invention, la face extrados 5 comporte des rainures 9. De telles rainures peuvent également être prévues sur la face intrados 4.
  • La fig. 3 est simplement un croquis simplifié montrant la section d'entrée des fumées dans la gaine 2 dans le sens de la flèche F de la fig. 2 et permettant dé repérer les quatre faces de la gaine 2 : face intrados 4, face extrados 5, face de plafond 10 et face de plancher 11.
  • Ces rainures 9 sont inclinées d'un angle compris entre 5 et 25° par rapport à l'horizontale.
  • La fig. 4 est un schéma montrant la section des rainures. Elles ont avantageusement une hauteur h comprise entre 200 et 400 mm et une profondeur inférieure à 50 mm, et elles sont séparées par des parties pleines 12 d'une hauteur h1 comprise entre 100 et 300 mm.
  • Cette disposition a pour but de favoriser la séparation gravitaire à l'entrée du cyclone.
  • Bien entendu, les rainures figurées sont représentées sous forme de créneaux à angles droits, mais ces rainures pourraient avoir une section différente, sans angles vifs par exemple.

Claims (1)

  1. Gaine d'entrée (2) de fumées dans un séparateur cyclone (1), ladite gaine comportant deux faces latérales (4 - 5) dont l'une est appelée face extrados (5) et l'autre face intrados (4), cette dernière aboutissant au nez du cyclone D, une face de plafond (10) et une face de plancher (11), caractérisée en ce que l'une au moins des faces intrados (4) et extrados (5) comporte des rainures (9) inclinées vers le bas depuis la sortie du foyer vers le séparateur cyclone (1).
EP00400086A 1999-01-18 2000-01-13 Gaine d'entrée de fumées dans un séparateur cyclone Expired - Lifetime EP1020228B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9900465 1999-01-18
FR9900465A FR2788454B1 (fr) 1999-01-18 1999-01-18 Gaine d'entree de fumees dans un separateur cyclone

Publications (2)

Publication Number Publication Date
EP1020228A1 EP1020228A1 (fr) 2000-07-19
EP1020228B1 true EP1020228B1 (fr) 2008-12-03

Family

ID=9540956

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00400086A Expired - Lifetime EP1020228B1 (fr) 1999-01-18 2000-01-13 Gaine d'entrée de fumées dans un séparateur cyclone

Country Status (7)

Country Link
US (1) US6258146B1 (fr)
EP (1) EP1020228B1 (fr)
CN (1) CN1106883C (fr)
AT (1) ATE416033T1 (fr)
DE (1) DE60040941D1 (fr)
ES (1) ES2316338T3 (fr)
FR (1) FR2788454B1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CL2003001757A1 (es) * 2003-08-29 2005-01-21 Vulco Sa Cabezal de entrada para hidrociclon, en el cual la altura del buscador de vortice, es una fraccion de la altura de la entrada de alimentacion, la cual es rectangular, donde dicha entrada tiene un primer sector que forma una voluta horizontal, y un se
US8104622B2 (en) * 2003-08-29 2012-01-31 Vulco, S.A. Cyclone separator having an inlet head
US20060058690A1 (en) * 2004-09-10 2006-03-16 Optical Sensors, Inc. Method and instrument for automated measurement of skin perfusion pressure
US20100064951A1 (en) * 2008-09-18 2010-03-18 Storm Technologies, Inc. Multi-point emission sampling system
CN101543700B (zh) * 2009-04-17 2010-11-10 王旗 回旋式蔗渣与烟道气分离流程
EP2431096B1 (fr) * 2010-09-17 2013-12-25 Alstom Technology Ltd Séparateur à cyclone
CN102393013A (zh) * 2010-12-24 2012-03-28 上海锅炉厂有限公司 循环流化床锅炉分离器
WO2015159559A1 (fr) * 2014-04-16 2015-10-22 三菱電機株式会社 Séparateur d'huile
PL3184178T3 (pl) * 2015-12-23 2019-05-31 Wagner Int Ag Układ powlekania proszkowego do powlekania przedmiotów obrabianych

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3853512A (en) * 1972-11-29 1974-12-10 Nissan Motor Air purifier
AUPM628594A0 (en) * 1994-06-17 1994-07-07 Blanche, Paul An apparatus for the separation of solids from flowing liquid
FR2738758B1 (fr) * 1995-09-15 1998-03-13 Gec Alsthom Stein Ind Separateur centrifuge en particulier pour chaudiere a lit fluidise circulant
DE19630472C2 (de) * 1996-07-27 2002-10-17 Neuman & Esser Anlagenbau Gmbh Zyklon, insbesondere Zyklonabscheider und Zyklonsichter
JP3323781B2 (ja) * 1996-09-05 2002-09-09 日揮株式会社 ガス移送配管

Also Published As

Publication number Publication date
FR2788454B1 (fr) 2001-02-23
DE60040941D1 (de) 2009-01-15
ATE416033T1 (de) 2008-12-15
CN1261557A (zh) 2000-08-02
ES2316338T3 (es) 2009-04-16
CN1106883C (zh) 2003-04-30
EP1020228A1 (fr) 2000-07-19
US6258146B1 (en) 2001-07-10
FR2788454A1 (fr) 2000-07-21

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