EP1020229B1 - 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
EP1020229B1
EP1020229B1 EP00400087A EP00400087A EP1020229B1 EP 1020229 B1 EP1020229 B1 EP 1020229B1 EP 00400087 A EP00400087 A EP 00400087A EP 00400087 A EP00400087 A EP 00400087A EP 1020229 B1 EP1020229 B1 EP 1020229B1
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EP
European Patent Office
Prior art keywords
face
cyclone
extrados
intrados
duct
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
EP00400087A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1020229A1 (fr
Inventor
Jean-Claude Semedard
Eugène Guilleux
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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Filing date
Publication date
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Application filed by Alstom Power Boiler SA filed Critical Alstom Power Boiler SA
Publication of EP1020229A1 publication Critical patent/EP1020229A1/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.
  • 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 the face 5 face extrados. For reasons of space, it is very common for the intrados face to make an acute angle ⁇ with respect to the outlet face of the chamber.
  • US 5,771,844 discloses a cyclone separator in which the inlet sheath 12 extends into the interior of the furnace and wherein the intrados face 13 of the inlet sheath is curved in its first part, internal to the furnace.
  • the present invention proposes to improve the efficiency of such cyclone separators by particular provisions of the inlet sheath.
  • 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, said intrados face which connects the starting point of sheath S to the point D of the nose of the cyclone having a profile such that it comprises at least two distinct tangents such as one T cut the extrados at a point A located upstream of the foot B of the perpendicular to the extrados led nose of the cyclone, characterized in that said intrados face begins from said point S by a first portion having a rectilinear profile R, followed by 'a second part having a curvilinear profile V inflection point or a second straight portion joining the nose D cyclone, said point S being located at the start of the outbreak.
  • the intrados face comprises grooves inclined downwards from the outlet of the hearth to the cyclone separator. This provision that can also be applied to the extrados face is intended to promote the transfer of solid particles in the inlet duct down the cyclone.
  • the ceiling face of the inlet duct forms a hump constituting a profile comprising, in the direction of the length of the duct from the outlet of the hearth to the inlet of the cyclone, a first descending portion followed by a rising party.
  • said hump is such that the height shrinkage in each section of the sheath is greater on the lower side than the extrados side.
  • a cyclone separator 1 connected to the smoke outlet of a furnace 3 by an inlet duct 2.
  • This figure shows the two lateral faces of the sheath 2: the face 4A, called the intrados face and the face 5, so-called extrados face.
  • the intrados face 4A starts at the starting point S of the hearth 3 by a rectilinear portion R followed by a curvilinear portion V having a point of inflection 6.
  • the tangent to the point of inflection 6 section the extrados 5 at point A located upstream of point B, foot of the perpendicular ⁇ to the extrados conducted from the nose D of the cyclone.
  • the Fig. 3 shows a variant of the invention in which the intrados face 4B starts from said point S, as in the Fig. 2 by a first portion having a rectilinear profile R followed by a second portion 4B1 also rectilinear and joining the nose D of cyclone 1.
  • the extension of the first portion to the rectilinear profile R intersects the upper surface 5 at a point A upstream of the point B, the foot of the perpendicular to the extrados 5 conducted from the nose D of the cyclone.
  • FIG. Fig. 4 which schematically represents the cyclone separator 1 with inlet duct 2 in elevation. These grooves 9 are inclined downwards from the outlet of the hearth to cyclone separator 1. This provision is intended to promote gravity separation at the entrance of the cyclone.
  • the Fig. 5 is simply a simplified sketch showing the fumes inlet section in sheath 2 in the direction of arrow F of the Fig. 4 and making it possible to locate the four faces of the sheath 2: intrados face 4A, 4B, extrados face 5, ceiling face 10 and floor face 11.
  • the inclined grooves 9, schematized on the Fig. 4 are performed on the extrados face 5 but can also be on the intrados face 4A, 4B.
  • These grooves 9 are inclined at an angle of between 5 and 25 ° relative to the horizontal.
  • the Fig. 6 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.
  • Fig. 7 and 8 show a disposition taken on the ceiling face 10 so that the solid particles, on the one hand, are detached from the roof 13 of the cyclone and, on the other hand, migrate, on the ceiling, from the intrados face 4A, 4B towards the upper surface 5 as shown by the arrow 14 ( Fig. 8 ), thus favoring, on the one hand, the gravitational separation and, on the other hand, lengthening the centrifugation radius of the solid particles.
  • This hump 15 constitutes a three-dimensional left profile causing in the direction of the length of the sheath 2, as shown in FIG. Fig. 7 first, at the outlet of the hearth 3, a contraction of the section of the sheath and then an expansion of the section before entering the cyclone 1.
  • the bump 15, asymmetrical reduces the passage height in the sheath from the extrados face 5 to the intrados face 4A, 4B.
  • the boss 15 has longitudinally ( Fig. 7 ) a slope of less than 20% over a length of 5 m, or 1 m of bump height.
  • Fig. 8 the transition is progressive between the ceiling reduced height side intrados 4 and extrados side 5 to height not reduce.

Landscapes

  • 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)
EP00400087A 1999-01-18 2000-01-13 Gaine d'entrée de fumées dans un séparateur cyclone Expired - Lifetime EP1020229B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9900464 1999-01-18
FR9900464A FR2788453B1 (fr) 1999-01-18 1999-01-18 Gaine d'entree de fumees dans un separateur cyclone

Publications (2)

Publication Number Publication Date
EP1020229A1 EP1020229A1 (fr) 2000-07-19
EP1020229B1 true EP1020229B1 (fr) 2008-10-01

Family

ID=9540955

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00400087A Expired - Lifetime EP1020229B1 (fr) 1999-01-18 2000-01-13 Gaine d'entrée de fumées dans un séparateur cyclone

Country Status (7)

Country Link
US (1) US6322601B1 (zh)
EP (1) EP1020229B1 (zh)
CN (1) CN1140315C (zh)
AT (1) ATE409524T1 (zh)
DE (1) DE60040355D1 (zh)
ES (1) ES2313874T3 (zh)
FR (1) FR2788453B1 (zh)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002067756A1 (en) * 2001-02-24 2002-09-06 Dyson Ltd Cyclonic separating apparatus
KR100619785B1 (ko) * 2005-05-16 2006-09-06 엘지전자 주식회사 오일분리기
JP5260034B2 (ja) * 2007-11-30 2013-08-14 三菱重工業株式会社 粉体分離装置及び固体燃料用バーナ
DE102009050165A1 (de) 2009-10-21 2011-04-28 Outotec Oyj Vorrichtung zur Behandlung von Feststoffen und/oder Gasen
EP2431096B1 (en) 2010-09-17 2013-12-25 Alstom Technology Ltd Cyclone separator
GB2499620B (en) * 2012-02-21 2019-05-22 Caltec Production Solutions Ltd Fluid separator
CN103398375B (zh) * 2013-07-01 2016-01-13 中国华能集团清洁能源技术研究院有限公司 带有耐磨靶区及导向装置的循环流化床锅炉旋风分离器
DE102013112977B4 (de) * 2013-11-25 2015-08-06 Pfannenberg Gmbh Luftdurchtrittsvorrichtung  zur  Zuführung  gereinigter  Luft  in  einen  Innenraum eines Schaltschrankes und Schaltschrank mit einer solchen Luftdurchtrittsvorrichtung
CN104100968B (zh) * 2014-07-25 2016-03-30 中国华能集团清洁能源技术研究院有限公司 一种带有整体倾斜中心筒的循环流化床锅炉旋风分离器
US10219672B2 (en) 2015-12-15 2019-03-05 The Clorox Company Multilayer cleaning article with gripping layer and dry surface contact layer
DE202016102924U1 (de) 2016-06-01 2017-09-04 Outotec (Finland) Oy Zyklon zur Separation von Partikeln aus einem Fluid
CN108499750B (zh) * 2017-02-27 2019-12-20 松下知识产权经营株式会社 分离装置
CA3174436A1 (en) * 2020-03-06 2021-09-10 Metso Outotec Finland Oy Cyclone separator arrangement

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT334475B (de) * 1972-12-06 1976-01-25 Hejlek Ing Franz Vorrichtung zur kontinuierlichen anreicherung gasformiger isotope schwerer elemente
IT1212056B (it) * 1985-01-22 1989-11-08 Carrol Noel Separatore a ciclone
GB2202468A (en) * 1987-03-25 1988-09-28 Smidth & Co As F L Cyclone
JPH0538408A (ja) * 1991-08-06 1993-02-19 Mitsubishi Heavy Ind Ltd 気液分離装置
US5122171A (en) * 1991-01-11 1992-06-16 Emtrol Corporation Apparatus for separating particulate material from hot gas
FR2738758B1 (fr) * 1995-09-15 1998-03-13 Gec Alsthom Stein Ind Separateur centrifuge en particulier pour chaudiere a lit fluidise circulant
US5771844A (en) * 1996-04-04 1998-06-30 Foster Wheeler Development Corp. Cyclone separator having increased gas flow capacity

Also Published As

Publication number Publication date
FR2788453B1 (fr) 2001-02-23
DE60040355D1 (de) 2008-11-13
ATE409524T1 (de) 2008-10-15
CN1264609A (zh) 2000-08-30
EP1020229A1 (fr) 2000-07-19
US6322601B1 (en) 2001-11-27
FR2788453A1 (fr) 2000-07-21
ES2313874T3 (es) 2009-03-16
CN1140315C (zh) 2004-03-03

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