EP1020228A1 - Smoke inlet conduct for a cyclone - Google Patents

Smoke inlet conduct for a cyclone Download PDF

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Publication number
EP1020228A1
EP1020228A1 EP00400086A EP00400086A EP1020228A1 EP 1020228 A1 EP1020228 A1 EP 1020228A1 EP 00400086 A EP00400086 A EP 00400086A EP 00400086 A EP00400086 A EP 00400086A EP 1020228 A1 EP1020228 A1 EP 1020228A1
Authority
EP
European Patent Office
Prior art keywords
cyclone
face
sheath
wall
smoke inlet
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.)
Granted
Application number
EP00400086A
Other languages
German (de)
French (fr)
Other versions
EP1020228B1 (en
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
Original Assignee
ABB Alstom Power Combustion
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Publication date
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Application filed by ABB Alstom Power Combustion filed Critical ABB Alstom Power Combustion
Publication of EP1020228A1 publication Critical patent/EP1020228A1/en
Application granted granted Critical
Publication of EP1020228B1 publication Critical patent/EP1020228B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 flue inlet duct in a separator cyclone.
  • the invention applies in particular, although not limited to, large installations, for example from 250 to 600 MW, which include several cyclone separators placed side by side at the exit of the fireplace.
  • large installations for example from 250 to 600 MW, which include several cyclone separators placed side by side at the exit of the fireplace.
  • the arrangement of the inlet sheath of a cyclone separator at the outlet of a hearth is that shown in fig. 1 where we see schematically in top view the cyclone separator 1 with its inlet sheath 2 at the outlet from the hearth 3.
  • This inlet sheath has two lateral faces 4 and 5, one face of floor and ceiling face not visible in this view.
  • Side 4 is called the underside and ends at cyclone D, and side 5 is called upper surface.
  • the solids present in part do not have time to settle in the sheath. Much of these solids therefore arrive at the entrance of the cyclone through the upper part of the sheath, where significant proportion is driven towards the gas outlet of the cyclone.
  • the present invention aims to overcome this drawback and improve the efficiency such cyclone separators.
  • the subject of the invention is therefore a flue inlet duct in a separator cyclone, said sheath comprising two lateral faces, one of which is called the upper surface and the other underside, the latter leading to the nose of cyclone D, a ceiling face and a floor face, characterized in that at least one of the lower and upper surfaces has grooves inclined downwards from the outlet of the hearth towards the separator cyclone.
  • a separator cyclone 1 with its inlet sheath 2 in elevation.
  • the face upper surface 5 has grooves 9. Such grooves can also be provided on the lower surface 4.
  • Fig. 3 is simply a simplified sketch showing the entry section of the fumes in the duct 2 in the direction of the arrow F in FIG. 2 and making it possible to identify the four sides of the duct 2: lower face 4, upper face 5, ceiling face 10 and face of floor 11.
  • These grooves 9 are inclined at an angle between 5 and 25 ° relative to the horizontal.
  • Fig. 4 is a diagram showing the section of the grooves. They have advantageously a height h of between 200 and 400 mm and a lower depth at 50 mm, and they are separated by solid parts 12 with a height h1 between 100 and 300 mm.
  • the purpose of this arrangement is to promote gravity separation at the entrance to the cyclone.
  • grooves shown are represented in the form of slots with right angles, but these grooves could have a different section, without sharp angles by 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)

Abstract

The entry collar comprises of a rear wall (5) that is arranged tangentially to the outer wall of the cyclonic generator. The front wall (4) of the entry collar is inclined such that the entry collar has an inward taper. A sharp point (D) is formed at the intersection of the frontal wall and the outer wall of the generator.

Description

La présente invention concerne une gaine d'entrée de fumées dans un séparateur cyclone.The present invention relates to a flue inlet duct in a separator cyclone.

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.The invention applies in particular, although not limited to, large installations, for example from 250 to 600 MW, which include several cyclone separators placed side by side at the exit of the fireplace. In such installations, there is insufficient space for correctly place the separator inlet sheath because of the space due to passage of various beams. Thus, conventionally, the arrangement of the inlet sheath of a cyclone separator at the outlet of a hearth is that shown in fig. 1 where we see schematically in top view the cyclone separator 1 with its inlet sheath 2 at the outlet from the hearth 3. This inlet sheath has two lateral faces 4 and 5, one face of floor and ceiling face not visible in this view.

La face 4 est appelée face intrados et aboutit au nez de cyclone D, et la face 5 est appelée face extrados.Side 4 is called the underside and ends at cyclone D, and side 5 is called upper surface.

Cette disposition de gaine qui résulte, comme il a été dit de l'encombrement, n'est pas favorable à une bonne efficacité du séparateur.This sheath arrangement which results, as has been said from the bulk, is not not favorable to good efficiency of the separator.

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 entraínée vers la sortie gaz du cyclone.Indeed, given that the sheath is very short, the solids present in part do not have time to settle in the sheath. Much of these solids therefore arrive at the entrance of the cyclone through the upper part of the sheath, where significant proportion is driven towards the gas outlet of the cyclone.

La présente invention a pour but de pallier cet inconvénient et d'améliorer l'efficacité de tels séparateurs cyclones.The present invention aims to overcome this drawback and improve the efficiency such cyclone separators.

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.The subject of the invention is therefore a flue inlet duct in a separator cyclone, said sheath comprising two lateral faces, one of which is called the upper surface and the other underside, the latter leading to the nose of cyclone D, a ceiling face and a floor face, characterized in that at least one of the lower and upper surfaces has grooves inclined downwards from the outlet of the hearth towards the separator 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.
    • The invention will now be described with reference to the accompanying drawing in which:
  • Fig. 1, already commented on, schematically represents the arrangement of the prior art.
  • Figs. 2, 3 and 4 are three schematic views allowing the arrangement according to the invention to be seen.

    • 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.Referring to fig. 2, there is shown schematically a separator cyclone 1 with its inlet sheath 2 in elevation. According to the invention, the face upper surface 5 has grooves 9. Such grooves can also be provided on the lower surface 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 de repérer les quatre faces de la gaine 2 : face intrados 4, face extrados 5, face de plafond 10 et face de plancher 11.Fig. 3 is simply a simplified sketch showing the entry section of the fumes in the duct 2 in the direction of the arrow F in FIG. 2 and making it possible to identify the four sides of the duct 2: lower face 4, upper face 5, ceiling face 10 and face of floor 11.

    Ces rainures 9 sont inclinées d'un angle compris entre 5 et 25° par rapport à l'horizontale.These grooves 9 are inclined at an angle between 5 and 25 ° relative to the horizontal.

    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.Fig. 4 is a diagram showing the section of the grooves. They have advantageously a height h of between 200 and 400 mm and a lower depth at 50 mm, and they are separated by solid parts 12 with a height h1 between 100 and 300 mm.

    Cette disposition a pour but de favoriser la séparation gravitaire à l'entrée du cyclone.The purpose of this arrangement is to promote gravity separation at the entrance to the 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.Of course, the grooves shown are represented in the form of slots with right angles, but these grooves could have a different section, without sharp angles by example.

    Claims (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).Inlet duct (2) for smoke in a cyclone separator (1), said duct comprising two lateral faces (4 - 5) one of which is called the upper surface (5) and the other underside face (4), the latter ending at the nose of cyclone D, a ceiling face (10) and a floor face (11), characterized in that at least one of the lower surfaces (4) and upper surface (5) has grooves (9) inclined downwards from the outlet of the hearth towards the cyclone separator (1).
    EP00400086A 1999-01-18 2000-01-13 Smoke inlet conduct for a cyclone Expired - Lifetime EP1020228B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR9900465A FR2788454B1 (en) 1999-01-18 1999-01-18 SMOKE INLET SHEATH IN A CYCLONE SEPARATOR
    FR9900465 1999-01-18

    Publications (2)

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

    Family

    ID=9540956

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP00400086A Expired - Lifetime EP1020228B1 (en) 1999-01-18 2000-01-13 Smoke inlet conduct for a cyclone

    Country Status (7)

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

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP3184178A1 (en) * 2015-12-23 2017-06-28 J. Wagner AG Powder coating equipment for coating workpieces

    Families Citing this family (8)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US8104622B2 (en) * 2003-08-29 2012-01-31 Vulco, S.A. Cyclone separator having an inlet head
    CL2003001757A1 (en) * 2003-08-29 2005-01-21 Vulco Sa INPUT HEAD FOR HYDROCICLON, IN WHICH THE HEIGHT OF THE VORTICE SEARCH, IS A FRACTION OF THE HEIGHT OF THE POWER INPUT, WHICH IS RECTANGULAR, WHERE SUCH ENTRY HAS A FIRST SECTOR FORMING A HORIZONTAL VOLUTE, AND A SEQUENCE
    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 (en) * 2009-04-17 2010-11-10 王旗 Rotary bagasse and flue gas separation process
    PL2431096T3 (en) * 2010-09-17 2014-05-30 General Electric Technology Gmbh Cyclone separator
    CN102393013A (en) * 2010-12-24 2012-03-28 上海锅炉厂有限公司 Circulating fluidized bed boiler separator
    WO2015159559A1 (en) * 2014-04-16 2015-10-22 三菱電機株式会社 Oil separator

    Citations (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP0763384A1 (en) * 1995-09-15 1997-03-19 GEC ALSTHOM Stein Industrie Centrifugal separator, in particular for a circulating fluidized bed boiler

    Family Cites Families (4)

    * 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
    DE19630472C2 (en) * 1996-07-27 2002-10-17 Neuman & Esser Anlagenbau Gmbh Cyclone, especially cyclone separators and cyclone classifiers
    JP3323781B2 (en) * 1996-09-05 2002-09-09 日揮株式会社 Gas transfer piping

    Patent Citations (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP0763384A1 (en) * 1995-09-15 1997-03-19 GEC ALSTHOM Stein Industrie Centrifugal separator, in particular for a circulating fluidized bed boiler

    Cited By (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP3184178A1 (en) * 2015-12-23 2017-06-28 J. Wagner AG Powder coating equipment for coating workpieces
    WO2017108198A3 (en) * 2015-12-23 2017-08-10 Wagner International Ag Powder coating system for coating workpieces with coating powder
    EP3184178B1 (en) 2015-12-23 2018-10-17 J. Wagner AG Powder coating equipment for coating workpieces
    US10751744B2 (en) 2015-12-23 2020-08-25 Wagner International Ag Powder coating system for coating workpieces with coating powder

    Also Published As

    Publication number Publication date
    DE60040941D1 (en) 2009-01-15
    CN1261557A (en) 2000-08-02
    EP1020228B1 (en) 2008-12-03
    ES2316338T3 (en) 2009-04-16
    FR2788454A1 (en) 2000-07-21
    ATE416033T1 (en) 2008-12-15
    CN1106883C (en) 2003-04-30
    FR2788454B1 (en) 2001-02-23
    US6258146B1 (en) 2001-07-10

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