EP0763384B1 - Séparateur centrifuge en particulier pour chaudière à lit fluidisé circulant - Google Patents
Séparateur centrifuge en particulier pour chaudière à lit fluidisé circulant Download PDFInfo
- Publication number
- EP0763384B1 EP0763384B1 EP96401917A EP96401917A EP0763384B1 EP 0763384 B1 EP0763384 B1 EP 0763384B1 EP 96401917 A EP96401917 A EP 96401917A EP 96401917 A EP96401917 A EP 96401917A EP 0763384 B1 EP0763384 B1 EP 0763384B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- solid particles
- separator according
- groove
- grooves
- gas
- 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
Links
Images
Classifications
-
- 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 separator centrifugal for circulating fluidized bed boiler.
- a device according to the preamble of claim 1 is described in document EP-A-0 052 042.
- the function of the separator is the phase separation mixture of gases and suspended solid particles In this one.
- a gas vortex is formed creating a force centrifugal in the separator enclosure.
- the effectiveness of a separator is related to the speed of the mixture in the pipe inlet, internal diameter and height of the separator conditioning the residence time.
- High speed can have effects harmful, especially in the case where the mixture has a strong concentration of solid particles as in beds circulating fluidized.
- High speed gas tends to effect, to re-train the solid particles already deposited on the wall of the separator and therefore cause a loss efficiency.
- the present invention solves this problem of re-training of solid particles and, to do this, in accordance with the invention, said walls are provided on their internal face of at least one capture groove solid particles pointing down, deep between 1 and 20% of the internal diameter of the part upper and width between 2 and 10% of the internal perimeter of the upper part.
- This groove serves on the one hand as a capture groove solid particles and on the other hand guide groove particles trapped down, while protecting them of the gas vortex.
- the gas mixture inlet pipe and of solid particles is tangential to the first wall and, according to the preferred embodiment, the end upper of said groove is arranged opposite this inlet pipe, allowing direct collection from the entry of a large amount of solid particles.
- Said groove can be vertical or inclined by angle of about 60 ° from the vertical.
- the angle can be variable on the height of the separator.
- the separator may have several said grooves and these grooves can be distributed around its perimeter or spaced apart from each other in an increasing direction of the gas mixture flow and solid particles.
- said groove can be partially covered on part of its width by a wall integral with its edge opposite to the direction of the gas mixture flow and solid particles.
- said groove opens into the outlet for solid particles.
- said groove can be completely covered by a closing wall in the lower part of the lower part.
- the invention has the advantage of carrying out the separation of solids in two stages, i.e. by gravity drop and centrifugation, which is well suited to L.F.C boilers where the high solid loads at the inlet of the separator tend to create a diluted phase overcoming a dense wall phase.
- the dense phase can be immediately separated from the flow main in the entrance of the separator and not disturb the rest of the solids flow and therefore decrease the re-training.
- This separation therefore makes it possible to increase the field of speeds used in centrifugation and therefore 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 a sectional elevation view partial vertical of a separator of a conformal separator to the invention according to a second embodiment.
- Figure 3 is a sectional elevation view partial vertical of a separator according to the invention according to a third embodiment.
- Figure 4 is a horizontal sectional view along III-III of figure 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 mode according to the invention.
- These walls 1A, 2A are provided on their internal face of grooves 6, 7 for capturing the solid particles directed downward, deep, constant or increasing as and as they descend, between 1 and 20% of the internal diameter of the upper part 1 and 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 ° from the vertical.
- the angle maybe 45 ° in a zone and 0 degrees in another.
- the grooves 6, 7 start in part 1, preferably substantially at the level of the horizontal plane of symmetry of the inlet pipe 3 and lead into the outlet pipe 5 solid particles in the lower part of the part lower 2.
- the grooves 6, 7 are completely covered by a closure wall 14 in the lower part of the part lower 2.
- a closure wall 14 in the lower part of the part lower 2.
- they are thus covered over a height substantially equal to half the height from the bottom 2 where the amount of particles solids in the grooves is important and so is totally protected from any re-training and where the quantity small, separate particles can flow along of this closure wall 14.
- the separator can be in plus with outlet 13 for solid particles arranged along the grooves 6, 7 which constitute intermediate outlets upstream of the outlet pipe classic 5.
- the grooves 6 to 9 are one of the other with an increasing step in the direction of the mixture flow of gas 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 this has its upper end disposed opposite this pipe inlet 3.
- the groove 6 ' is not radial but of transverse axis parallel to the axis longitudinal of the inlet pipe 3. This groove 6 'is thus located at the point of impact of the gas mixture flow and solid particles directly at the outlet of the line 3 where the speed is maximum and the amount of solid particles also separated by centrifugal force.
- the groove (s) 6 are partially covered on a part of their width by a wall 10 integral with their edge 6A opposite to the direction of flow of gas mixture and solid particles.
- a wall 10 integral with their edge 6A opposite to the direction of flow of gas mixture and solid particles.
- the one or more grooves extend over the upper part 1 and over the lower part 2.
- the cyclone may include a certain number of grooves of a type and a number of grooves of the other type.
- FIG. 7 represents an embodiment of a octagonal upper section separator made up only planar faces 20 connected together by grooves 21.
- the wall consists of cooling tubes 22 internally traversed by a coolant and internally covered with a lining of materials refractory.
- the separator according to the invention is in special designed to equip a fluidized bed boiler circulating.
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)
Description
- une partie supérieure de section sensiblement constante constituée d'une première paroi et comportant en partie haute une conduite d'entrée d'un mélange de gaz et de particules solides et une conduite de sortie du gaz et
- une partie inférieure de section décroissante vers le bas constituée d'une seconde paroi et comportant en partie basse une conduite de sortie des particules solides.
- une partie supérieure 1 de section sensiblement constante, par exemple cylindrique de section circulaire ou octogonale, constituée d'une première paroi 1A et comportant en partie haute une conduite d'entrée 3 d'un mélange de gaz et de particules solides, en général tangentielle à la première paroi 1A, et une conduite de sortie 4 du gaz constituée en général d'un tube plongeur et
- une partie inférieure 2 de section décroissante vers le bas, par exemple conique ou prismatique, constituée d'une seconde paroi 2A et comportant en partie basse une conduite de sortie 5 des particules solides, en général verticale.
Claims (12)
- Séparateur de mélanges gaz-solides pour chaudière à lit fluidisé circulant comportantune partie supérieure (1) de section sensiblement constante constituée d'une première paroi (lA) et comportant en partie haute une conduite d'entrée (3) d'un mélange de gaz et de particules solides et une conduite de sortie (4) du gaz etune partie inférieure (2) de section décroissante vers le bas constituée d'une seconde paroi (2A) et comportant en partie basse une conduite de sortie (5) des particules solides,
- Séparateur selon la revendication 1, dont la conduite d'entrée (3) du mélange de gaz et de particules solides est tangentielle à la première paroi (1A), caractérisé en ce que l'extrémité supérieure de ladite rainure est disposée en face de cette conduite d'entrée (3).
- Séparateur selon la revendication 1 ou 2, caractérisé en ce que ladite rainure est verticale.
- Séparateur selon la revendication 1 ou 2, caractérisé en ce que ladite rainure est inclinée d'un angle (α) inférieur à 60° par rapport à la verticale.
- Séparateur selon l'une des revendications précédentes, caractérisé en ce que ladite rainure (6') est partiellement recouverte sur une partie de sa largeur par une paroi (10) solidaire de son bord (6A) opposé au sens du flux de mélange de gaz et de particules solides.
- Séparateur selon l'une des revendications précédentes, caractérisé en ce que la dite rainure débouche dans la conduite (5) de sortie des particules solides.
- Séparateur selon la revendication 6, caractérisés en ce que ladite rainure est totalement recouverte par une paroi de fermeture (14) dans la partie basse de la partie inférieure (2).
- Séparateur selon l'une des revendications précédentes, caractérisé en ce qu'il comporte plusieurs dites rainures (6 à 9).
- Séparateur selon la revendication 8, caractérisé en ce que lesdites rainures sont réparties sur son périmètre.
- Séparateur selon la revendication 8, caractérisé en ce que lesdites rainures sont distantes l'une de l'autre d'un pas croissant dans le sens du flux de mélange de gaz et de particules solides.
- Séparateur selon l'une des revendications 8 à 10, caractérisé en ce que la largeur totale des rainures est comprise entre 5 et 33% du périmètre interne de la partie supérieure (1).
- Séparateur selon la revendication 1, caractérisé en ce que la partie supérieure est constituée de faces planes (20) disposées de manière à constituer une section octogonale, lesdites faces étant raccordées entre elles par des rainures (21).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9510845 | 1995-09-15 | ||
FR9510845A FR2738758B1 (fr) | 1995-09-15 | 1995-09-15 | Separateur centrifuge en particulier pour chaudiere a lit fluidise circulant |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0763384A1 EP0763384A1 (fr) | 1997-03-19 |
EP0763384B1 true EP0763384B1 (fr) | 2000-05-10 |
Family
ID=9482595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96401917A Expired - Lifetime EP0763384B1 (fr) | 1995-09-15 | 1996-09-09 | Séparateur centrifuge en particulier pour chaudière à lit fluidisé circulant |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0763384B1 (fr) |
CN (1) | CN1100586C (fr) |
AT (1) | ATE192672T1 (fr) |
DE (1) | DE69608194T2 (fr) |
DK (1) | DK0763384T3 (fr) |
ES (1) | ES2147906T3 (fr) |
FR (1) | FR2738758B1 (fr) |
RU (1) | RU2163514C2 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004030793A1 (fr) * | 2002-10-02 | 2004-04-15 | Statoil Asa | Epurateur |
US7361211B2 (en) | 2004-05-04 | 2008-04-22 | Daimler Ag | Moisture exchange module having a bundle of moisture-permeable hollow fibre membranes |
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 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2788453B1 (fr) * | 1999-01-18 | 2001-02-23 | Alstom | Gaine d'entree de fumees dans un separateur cyclone |
FR2788454B1 (fr) | 1999-01-18 | 2001-02-23 | Alstom | Gaine d'entree de fumees dans un separateur cyclone |
EP1308213A1 (fr) * | 2001-10-30 | 2003-05-07 | Alstom (Switzerland) Ltd | Séparateur centrifuge en particulier pour un réacteur à lit fluidisé circulant |
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 |
FI126040B (en) * | 2014-07-09 | 2016-06-15 | Amec Foster Wheeler En Oy | Particle separator that can be connected to a fluidized bed reactor and fluidized bed reactor |
CN111108333B (zh) * | 2017-09-28 | 2021-11-30 | 三菱电机株式会社 | 油分离器以及具备油分离器的空调机 |
CN109894287A (zh) * | 2019-04-03 | 2019-06-18 | 清华大学 | 一种蜗壳式高效分离器 |
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 |
Family Cites Families (8)
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 |
DE2250841B2 (de) * | 1972-10-17 | 1980-01-31 | Koerting Ag, 3000 Hannover | Fliehkraftabscheider für feste und flüssige Stoffe aus Gasen |
SU889108A1 (ru) * | 1980-03-06 | 1981-12-15 | Государственный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Цветных Металлов "Гинцветмет" | Устройство дл разделени минерального сырь |
FR2493186B1 (fr) * | 1980-11-06 | 1985-07-12 | Aussenard Michel | Centrifugeur avec dispositif anti-abrasion, pour la separation de particules en suspension dans un fluide gazeux |
DE3435214A1 (de) * | 1984-09-26 | 1986-04-03 | Hugo 4720 Beckum Schmitz | Zyklon mit mehreckigem querschnitt |
FI75505C (fi) * | 1985-01-11 | 1988-07-11 | Ahlstroem Oy | Foerfarande och anordning foer avskiljning av fast material ur roekgaserna fraon en reaktor med cirkulerande baedd. |
GB8821161D0 (en) * | 1988-09-09 | 1988-10-12 | Serck Baker Ltd | Separator |
-
1995
- 1995-09-15 FR FR9510845A patent/FR2738758B1/fr not_active Expired - Fee Related
-
1996
- 1996-09-09 ES ES96401917T patent/ES2147906T3/es not_active Expired - Lifetime
- 1996-09-09 AT AT96401917T patent/ATE192672T1/de not_active IP Right Cessation
- 1996-09-09 DE DE69608194T patent/DE69608194T2/de not_active Expired - Fee Related
- 1996-09-09 EP EP96401917A patent/EP0763384B1/fr not_active Expired - Lifetime
- 1996-09-09 DK DK96401917T patent/DK0763384T3/da active
- 1996-09-13 RU RU96118228/12A patent/RU2163514C2/ru active
- 1996-09-13 CN CN96112935.2A patent/CN1100586C/zh not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004030793A1 (fr) * | 2002-10-02 | 2004-04-15 | Statoil Asa | Epurateur |
US7361211B2 (en) | 2004-05-04 | 2008-04-22 | Daimler Ag | Moisture exchange module having a bundle of moisture-permeable hollow fibre membranes |
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 |
Also Published As
Publication number | Publication date |
---|---|
RU2163514C2 (ru) | 2001-02-27 |
DE69608194D1 (de) | 2000-06-15 |
DK0763384T3 (da) | 2000-10-09 |
FR2738758A1 (fr) | 1997-03-21 |
ATE192672T1 (de) | 2000-05-15 |
EP0763384A1 (fr) | 1997-03-19 |
CN1100586C (zh) | 2003-02-05 |
ES2147906T3 (es) | 2000-10-01 |
CN1151000A (zh) | 1997-06-04 |
DE69608194T2 (de) | 2000-12-14 |
FR2738758B1 (fr) | 1998-03-13 |
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