EP0763384A1 - Zentrifugalabschneider, insbesondere für einen Kessel mit zirkulierendem Wirbelbett - Google Patents

Zentrifugalabschneider, insbesondere für einen Kessel mit zirkulierendem Wirbelbett Download PDF

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Publication number
EP0763384A1
EP0763384A1 EP96401917A EP96401917A EP0763384A1 EP 0763384 A1 EP0763384 A1 EP 0763384A1 EP 96401917 A EP96401917 A EP 96401917A EP 96401917 A EP96401917 A EP 96401917A EP 0763384 A1 EP0763384 A1 EP 0763384A1
Authority
EP
European Patent Office
Prior art keywords
solid particles
separator according
groove
grooves
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.)
Granted
Application number
EP96401917A
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English (en)
French (fr)
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EP0763384B1 (de
Inventor
Eugène Guilleux
Jean Aubry
Jean-Xavier Morin
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
GEC Alsthom Stein Industrie
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GEC Alsthom Stein Industrie filed Critical GEC Alsthom Stein Industrie
Publication of EP0763384A1 publication Critical patent/EP0763384A1/de
Application granted granted Critical
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    • 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
    • B04C5/081—Shapes or dimensions
    • 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
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/14—Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations

Definitions

  • the present invention relates to a centrifugal separator for a circulating fluidized bed boiler.
  • the function of the separator is the separation of the phases of the mixture of gases and solid particles suspended in it. A gas vortex is formed creating a centrifugal force in the enclosure of the separator.
  • the efficiency of a separator is linked to the speed of the mixture in the inlet pipe, the internal diameter and the height of the separator which determines the residence time.
  • a high speed can have harmful effects, especially in the case where the mixture has a high concentration of solid particles as in the circulating fluidized beds. Gas at high speed tends, in fact, to re-entrain solid particles already deposited on the wall of the separator and therefore to cause a loss of efficiency.
  • the present invention solves this problem of re-entrainment of solid particles and, to do this, in accordance with the invention, said walls are provided on their internal face with at least one groove for collecting solid particles directed downwards, of depth included. between 1 and 20% of the internal diameter of the upper part and of width between 2 and 10% of the internal perimeter of the upper part.
  • This groove serves on the one hand as a capture groove for solid particles and on the other hand as a guide groove for the collected particles downwards, while protecting them from the gas vortex.
  • the inlet pipe for the mixture of gases and solid particles is tangential to the first wall and, according to the preferred embodiment, the upper end of said groove is disposed opposite this inlet pipe, allowing the direct capture upon entry of a large quantity of solid particles.
  • Said groove can be vertical or inclined at an angle of about 60 ° relative to the vertical.
  • the angle can be variable over the height of the separator.
  • the separator can have several said grooves and these grooves can be distributed around its perimeter or distant from each other by an increasing pitch in the direction of the flow of gas mixture and solid particles.
  • said groove can be partially covered over part of its width by a wall integral with its edge opposite the direction of the flow of gas mixture and solid particles.
  • said groove opens into the outlet pipe for solid particles.
  • said groove can be completely covered by a closure wall in the lower part of the lower part.
  • the invention has the advantage of effecting the separation of solids in two stages, that is to say by gravity drop and centrifugation, which is well suited to CFL boilers where the high loads of solids at the inlet of the separator tend to create a dilute phase overcoming a dense phase on the wall.
  • the dense phase can be immediately separated from the main flow in the inlet of the separator and not disturb the rest of the flow of solids and therefore reduce the retraining.
  • This separation therefore makes it possible to increase the speed field used in the centrifugation and therefore to improve the compactness of the separator.
  • the total width of the grooves is between 5 and 33% of the internal perimeter of the upper part.
  • Figure 1 is a vertical sectional view of a first embodiment of a separator according to the invention.
  • Figure 2 is an elevational view in partial vertical section of a separator of a separator according to the invention according to a second embodiment.
  • Figure 3 is an elevational view in partial vertical section of a separator according to the invention according to a third embodiment.
  • FIG. 4 is a view in horizontal section along III-III of FIG. 1.
  • Figure 5 is a similar sectional view of a fourth embodiment of a separator according to the invention.
  • Figure 6 is a cross-sectional view of a groove.
  • Figure 7 is a sectional view of a fifth embodiment according to the invention.
  • These walls 1A, 2A are provided on their internal face with grooves 6, 7 for collecting solid particles directed downwards, of depth, constant or increasing as they descend, ranging between 1 and 20% of the diameter internal of the upper part 1 and of width, constant or variable, between 2 and 10% of the internal perimeter of the upper part 1.
  • the grooves 6, 7 are vertical.
  • the grooves are inclined at an angle ⁇ less than 60 ° relative to the vertical.
  • the angle may be 45 ° in one area and 0 degrees in another.
  • the grooves 6, 7 start in the first part 1, preferably substantially at the level of the horizontal plane of symmetry of the inlet pipe 3 and open into the outlet pipe 5 solid particles in the lower part of the lower part 2.
  • the grooves 6, 7 are completely covered by a closure wall 14 in the lower part of the lower part 2.
  • a closure wall 14 in the lower part of the lower part 2.
  • they are thus covered over a height substantially equal to half the height of the lower part 2 where the quantity of solid particles in the grooves is large and is therefore completely protected from any re-entrainment and where the small quantity of separated particles can flow along this closure wall 14.
  • the separator may also be provided with outlet orifices 13 for the solid particles arranged along the grooves 6, 7 which constitute intermediate outlets upstream from the conventional outlet pipe 5.
  • the grooves 6 to 9 are spaced from each other by an increasing step in the direction of the flow of gas mixture and solid particles, represented by the arrows. There are four of them here. It is possible to arrange one to eight such grooves, regularly distributed or thus offset, the total width of the grooves being between 5 and 33% of the internal perimeter of the upper part 1.
  • FIG. 5 represents an embodiment of a separator with a single groove 6 ', where the latter has its upper end disposed opposite this inlet pipe 3.
  • the groove 6' n ' is not radial but of transverse axis parallel to the longitudinal axis of the inlet pipe 3.
  • This groove 6 ′ is thus located at the point of impact of the flow of gas mixture and solid particles directly at the outlet of the line 3 where the speed is maximum and the quantity of solid particles separated by centrifugal force also.
  • the groove or grooves 6 are partially covered over part of their width by a wall 10 integral with their edge 6A opposite to the direction of the flow of gas mixture and solid particles.
  • the solid particles are entrained in the groove 6 according to the arrow 11 and are maximum protected there from any re-entrainment by the vortex.
  • the groove or grooves extend over the upper part 1 and over the lower part 2.
  • the cyclone may comprise a number of grooves of one type and a number of grooves of the other type .
  • FIG. 7 represents an embodiment of a separator of octagonal upper section made up only of planar faces 20 connected to each other by grooves 21.
  • the wall consists of cooling tubes 22 internally traversed by a cooling fluid and internally covered with a lining of refractory materials.
  • the separator according to the invention is in particular intended to equip a circulating fluidized bed boiler.

Landscapes

  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Cyclones (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Centrifugal Separators (AREA)
EP96401917A 1995-09-15 1996-09-09 Zentrifugalabschneider, insbesondere für einen Kessel mit zirkulierendem Wirbelbett Expired - Lifetime EP0763384B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9510845A FR2738758B1 (fr) 1995-09-15 1995-09-15 Separateur centrifuge en particulier pour chaudiere a lit fluidise circulant
FR9510845 1995-09-15

Publications (2)

Publication Number Publication Date
EP0763384A1 true EP0763384A1 (de) 1997-03-19
EP0763384B1 EP0763384B1 (de) 2000-05-10

Family

ID=9482595

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96401917A Expired - Lifetime EP0763384B1 (de) 1995-09-15 1996-09-09 Zentrifugalabschneider, insbesondere für einen Kessel mit zirkulierendem Wirbelbett

Country Status (8)

Country Link
EP (1) EP0763384B1 (de)
CN (1) CN1100586C (de)
AT (1) ATE192672T1 (de)
DE (1) DE69608194T2 (de)
DK (1) DK0763384T3 (de)
ES (1) ES2147906T3 (de)
FR (1) FR2738758B1 (de)
RU (1) RU2163514C2 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1020229A1 (de) * 1999-01-18 2000-07-19 ABB Alstom Power Combustion Rauchgaseinlasskanal für Zyklon
EP1020228A1 (de) * 1999-01-18 2000-07-19 ABB Alstom Power Combustion Rauchgaseinlasskanal für Zyklon
EP1308213A1 (de) * 2001-10-30 2003-05-07 Alstom (Switzerland) Ltd Zentrifugalabschneider, insbesondere für einen Reaktor mit zirkulierendem Wirbelbett
WO2016005655A1 (en) * 2014-07-09 2016-01-14 Amec Foster Wheeler Energia Oy Particle separator assembly connectable to a fluidized bed reactor and a fluidized bed reactor
WO2019064427A1 (ja) * 2017-09-28 2019-04-04 三菱電機株式会社 油分離器およびそれを備えた空気調和機
CN109894287A (zh) * 2019-04-03 2019-06-18 清华大学 一种蜗壳式高效分离器

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO320957B1 (no) * 2002-10-02 2006-02-20 Statoil Asa Separasjonsenhet
DE102004022311B4 (de) * 2004-05-04 2006-12-28 Daimlerchrysler Ag Feuchtigkeitsaustauschmodul mit einem Bündel von für Feuchtigkeit durchlässigen Hohlfasermembranen
DE102004022245B4 (de) * 2004-05-04 2012-06-28 Daimler Ag Brennstoffzellensystem und Verfahren zu dessen Betrieb
DE102004022312B4 (de) 2004-05-04 2009-04-16 Daimler Ag Feuchtigkeitsaustauschmodul mit einem Bündel von für Feuchtigkeit durchlässigen Hohlfasermembranen
FR2988307B1 (fr) 2012-03-26 2014-03-21 Coutier Moulage Gen Ind Separateur a cyclone
CN105806668A (zh) * 2014-12-30 2016-07-27 杜晨光 一种小流量的大气颗粒物切割装置
CN112691798B (zh) * 2019-10-22 2022-11-15 中国石油化工股份有限公司 一种旋风分离器及其应用方法和一种流化床反应器

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR424561A (fr) * 1910-06-22 1911-05-17 Adrien Robert Appareil séparateur de copeaux et sciures
DE887929C (de) * 1951-12-25 1953-08-27 Kastrup K G Vorm Paul Pollrich Fliehkraftabscheider zum kontinuierlichen Abscheiden von Baumwolle-, Zellwolle- od. dgl. Fasern
FR2202734A1 (en) * 1972-10-17 1974-05-10 Koerting Ag Centrifugal cleaning of gases in vortex chamber - with helical ribs of opposite pitch to helical upward gas flow
SU889108A1 (ru) * 1980-03-06 1981-12-15 Государственный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Цветных Металлов "Гинцветмет" Устройство дл разделени минерального сырь
EP0052042A2 (de) * 1980-11-06 1982-05-19 Michel Aussenard Schutz der Wand eines Zentrifugalabscheiders gegen Verschleiss durch die abgeschiedenen Partikel und Vorrichtung zur Durchführung des Verfahrens
DE3435214A1 (de) * 1984-09-26 1986-04-03 Hugo 4720 Beckum Schmitz Zyklon mit mehreckigem querschnitt
WO1986003986A1 (en) * 1985-01-11 1986-07-17 A. Ahlstrom Corporation Method and apparatus for separating solid particles from flue gases in a circulating fluidized bed reactor
WO1990002593A1 (en) * 1988-09-09 1990-03-22 Serck Baker Limited Separator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1114580B (it) * 1979-03-16 1986-01-27 Tecnicomplex Spa Perfezionamento ai cicloni di decantazione particolarmente adatti per la separazione dell'aria dai materiali leggeri e di superficie relativamente grande quali plastica in film e simili trasportati dall'aria stessa
RU2022618C1 (ru) * 1991-03-29 1994-11-15 Московский институт теплотехники Устройство для очистки газового потока от жидких частиц
DE4212269A1 (de) * 1992-04-11 1993-10-14 Pbs Pulverbeschichtungs Und Sp Vorrichtung zur Staubabscheidung

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR424561A (fr) * 1910-06-22 1911-05-17 Adrien Robert Appareil séparateur de copeaux et sciures
DE887929C (de) * 1951-12-25 1953-08-27 Kastrup K G Vorm Paul Pollrich Fliehkraftabscheider zum kontinuierlichen Abscheiden von Baumwolle-, Zellwolle- od. dgl. Fasern
FR2202734A1 (en) * 1972-10-17 1974-05-10 Koerting Ag Centrifugal cleaning of gases in vortex chamber - with helical ribs of opposite pitch to helical upward gas flow
SU889108A1 (ru) * 1980-03-06 1981-12-15 Государственный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Цветных Металлов "Гинцветмет" Устройство дл разделени минерального сырь
EP0052042A2 (de) * 1980-11-06 1982-05-19 Michel Aussenard Schutz der Wand eines Zentrifugalabscheiders gegen Verschleiss durch die abgeschiedenen Partikel und Vorrichtung zur Durchführung des Verfahrens
DE3435214A1 (de) * 1984-09-26 1986-04-03 Hugo 4720 Beckum Schmitz Zyklon mit mehreckigem querschnitt
WO1986003986A1 (en) * 1985-01-11 1986-07-17 A. Ahlstrom Corporation Method and apparatus for separating solid particles from flue gases in a circulating fluidized bed reactor
WO1990002593A1 (en) * 1988-09-09 1990-03-22 Serck Baker Limited Separator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED Section Ch Week 8241, 24 November 1982 Derwent World Patents Index; Class J01, AN 87577 E-41, XP002020172 *

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1020229A1 (de) * 1999-01-18 2000-07-19 ABB Alstom Power Combustion Rauchgaseinlasskanal für Zyklon
EP1020228A1 (de) * 1999-01-18 2000-07-19 ABB Alstom Power Combustion Rauchgaseinlasskanal für Zyklon
FR2788453A1 (fr) * 1999-01-18 2000-07-21 Alstom Gaine d'entree de fumees dans un separateur cyclone
FR2788454A1 (fr) * 1999-01-18 2000-07-21 Alstom Gaine d'entree de fumees dans un separateur cyclone
US6258146B1 (en) 1999-01-18 2001-07-10 Abb Alstom Power Combustion Inlet duct for admitting flue gases into a cyclone separator
US6322601B1 (en) 1999-01-18 2001-11-27 Abb Alstom Power Combustion Cyclone separator smoke inlet trunking
US6938780B2 (en) 2001-10-30 2005-09-06 Alstom (Switzerland) Ltd. Centrifugal separator in particular for fluidized bed reactor device
WO2003037524A1 (en) * 2001-10-30 2003-05-08 Alstom (Switzerland) Ltd A centrifugal separator, in particular for a fluidized bed reactor device
EP1308213A1 (de) * 2001-10-30 2003-05-07 Alstom (Switzerland) Ltd Zentrifugalabschneider, insbesondere für einen Reaktor mit zirkulierendem Wirbelbett
WO2016005655A1 (en) * 2014-07-09 2016-01-14 Amec Foster Wheeler Energia Oy Particle separator assembly connectable to a fluidized bed reactor and a fluidized bed reactor
KR20160027229A (ko) * 2014-07-09 2016-03-09 아멕 포스터 휠러 에너지아 오와이 유동층 반응기에 연결가능한 입자 분리기 어셈블리 및 유동층 반응기
JP2016531726A (ja) * 2014-07-09 2016-10-13 エイメック フォスター ウィーラー エナージア オサケ ユキチュア 流動床反応器に接続可能な粒子分離器アセンブリ及び流動床反応器
KR101700074B1 (ko) 2014-07-09 2017-01-26 아멕 포스터 휠러 에너지아 오와이 유동층 반응기에 연결가능한 입자 분리기 어셈블리 및 유동층 반응기
US9604229B2 (en) 2014-07-09 2017-03-28 Amec Foster Wheeler Energia Oy Particle separator assembly connectable to a fluidized bed reactor and a fluidized bed reactor
WO2019064427A1 (ja) * 2017-09-28 2019-04-04 三菱電機株式会社 油分離器およびそれを備えた空気調和機
JPWO2019064427A1 (ja) * 2017-09-28 2020-10-22 三菱電機株式会社 油分離器およびそれを備えた空気調和機
CN109894287A (zh) * 2019-04-03 2019-06-18 清华大学 一种蜗壳式高效分离器

Also Published As

Publication number Publication date
FR2738758A1 (fr) 1997-03-21
CN1151000A (zh) 1997-06-04
ES2147906T3 (es) 2000-10-01
FR2738758B1 (fr) 1998-03-13
CN1100586C (zh) 2003-02-05
DE69608194T2 (de) 2000-12-14
DK0763384T3 (da) 2000-10-09
EP0763384B1 (de) 2000-05-10
DE69608194D1 (de) 2000-06-15
RU2163514C2 (ru) 2001-02-27
ATE192672T1 (de) 2000-05-15

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