EP2186571B1 - Séparateur de force centrifuge - Google Patents

Séparateur de force centrifuge Download PDF

Info

Publication number
EP2186571B1
EP2186571B1 EP09012607.9A EP09012607A EP2186571B1 EP 2186571 B1 EP2186571 B1 EP 2186571B1 EP 09012607 A EP09012607 A EP 09012607A EP 2186571 B1 EP2186571 B1 EP 2186571B1
Authority
EP
European Patent Office
Prior art keywords
centrifugal separator
housing cover
tube
separator according
immersion tube
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.)
Not-in-force
Application number
EP09012607.9A
Other languages
German (de)
English (en)
Other versions
EP2186571A2 (fr
EP2186571A3 (fr
Inventor
Johann Böschen
Fred Kaminski
Guido Pütz
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.)
RWE Power AG
Original Assignee
RWE Power AG
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 RWE Power AG filed Critical RWE Power AG
Priority to SI200931638A priority Critical patent/SI2186571T1/sl
Priority to PL09012607T priority patent/PL2186571T3/pl
Publication of EP2186571A2 publication Critical patent/EP2186571A2/fr
Publication of EP2186571A3 publication Critical patent/EP2186571A3/fr
Application granted granted Critical
Publication of EP2186571B1 publication Critical patent/EP2186571B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B04C5/12—Construction of the overflow ducting, e.g. diffusing or spiral exits
    • B04C5/13—Construction of the overflow ducting, e.g. diffusing or spiral exits formed as a vortex finder and extending into the vortex chamber; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow
    • 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
    • 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

Definitions

  • the invention relates to a centrifugal separator with a housing forming at least one swirl chamber with at least one tangential inlet, with a lower discharge in the installation position for the heavy components deposited in the centrifugal field and with a discharge passing through a housing cover in relation to the installation position, which discharges into the Housing extending dip tube includes.
  • the invention relates to a recycle cyclone for the bed material of a fluidized bed boiler or a fluidized bed combustor or a fluidized bed gasifier.
  • centrifugal separators include a dip tube extending into the housing of the centrifugal separator.
  • the immersion tube must be installed as smoke-tight as possible in the housing covering a refractory lining in order to avoid short-circuit currents.
  • This dip tube is constantly exposed to process temperatures of up to 900 ° C. This is usually made of scale-resistant sheet steel.
  • the dip tube is passed through the housing cover and circumferentially sealed with fiber insulation.
  • the dip tube of a known construction for example suspended in a jacket tube connected to the housing cover, such that the weight of the dip tube is taken up exclusively by the jacket tube.
  • the dip tube is enclosed because of its passage through the housing cover over its entire circumference of the refractory lining of the housing cover.
  • the circulating ashes from the fluidized bed combustion settle in the design-related gaps and cavities between the dip tube and the housing cover. Due to temperature changes and different thermal expansions of dip tube on the one hand and housing cover on the other hand, it often comes to high pressure forces on the dip tube.
  • hydrocyclone with at least one vortex chamber forming a housing, known with at least one tangential inlet with a lower position in the installation position and with respect to the mounting position an upper housing cover passing through discharge.
  • the hydrocyclone comprises a dip tube extending into the housing, which is connected to the side of the housing cover facing a vortex chamber.
  • the housing of this hydrocyclone is formed in two parts and comprises an upper housing part and a lower housing part, which are screwed together.
  • the dip tube is formed as a screw threaded insert of the upper housing part.
  • hydrocyclone or liquid-solids separator is from the US 3,129,173 known. This also includes a tangential inlet and a lower position in the installation position and a dip tube arranged on a housing cover.
  • the dip tube is connected to the swirl chamber facing side of the housing cover.
  • the dip tube opens into a central fluid outlet, which is provided on the side facing away from the vortex chamber side of the housing cover and which has a smaller diameter than the dip tube.
  • centrifugal separator is from the US 940 076 A known, wherein the centrifugal separator described therein also comprises a central dip tube which is passed through the housing cover of the centrifugal separator.
  • US 1,916,762 A. is a spark arrester of a steam locomotive known, which is suspended in a flue casing of the boiler of the locomotive.
  • the invention has for its object to provide a recycle cyclone for the bed material of a fluidized bed boiler, a fluidized bed furnace or a fluidized bed gasifier, which is improved in relation to the service life of the dip tube.
  • the immersion tube is circumferentially kept free of forces which are due to the different thermal expansions of refractory material on the one hand and steel on the other hand.
  • the immersion tube is suspended from a support ring connected to the side of the housing cover facing away from the vortex chamber with the housing cover being interposed. In this way it is ensured that the housing cover does not have to absorb the weight of the dip tube.
  • the dip tube is sealed frontally against the vortex chamber facing side of the cyclone ceiling.
  • the construction of the invention ensures a minimization of the direct contact of steel and refractory lining and a simple and better seal.
  • the construction in particular prepares no expansion problems.
  • the dip tube is cylindrical and is provided with an annular connecting flange, which is concentric with the longitudinal axis of the dip tube.
  • Such a dip tube is structurally particularly simple and can be exchanged particularly easily due to its cylindrical configuration.
  • the support ring is connected to a jacket tube of the upper discharge so that the jacket tube receives the weight of the dip tube. It is expedient if the support ring is arranged eccentrically with respect to the jacket tube, so that the inlet bevel is formed in the region of the transition between the jacket tube and dip tube in the jacket tube and thus in the mortared refractory.
  • the support ring is provided with radially extending slots with which a thermal expansion in the circumferential direction of the support ring is collected.
  • the tie rods are secured at least against the support ring and against the connecting flange of the dip tube with wedges. This wedging of the tie rods ensures a simple even with longer life Replacing the dip tube. Such wedging is hardly susceptible to increased temperature effects and hot changes.
  • the tie rods pass through bores of the support ring and / or the housing cover and / or the connecting flange, whose diameter is significantly larger than the diameter of the tie rods.
  • the dip tube is composed of several pipe sections of different steel grades is particularly advantageous.
  • a pipe shot with a steel quality of increased heat resistance can be used, then steel grades of lower heat resistance can subsequently be used in the direction of gravity.
  • FIG. 1 A schematic view of the centrifugal separator 1 according to the invention is shown in FIG. 1 shown.
  • the centrifugal separator 1 according to the described embodiment is designed as a recycling cyclone for the bed material of a fluidized bed combustion. This comprises a housing 2 with a tangential inlet 3 and a lower position 4 in the installation position for the bed material discharged from the centrifugal field of the swirl chamber 5 formed by the housing 2.
  • the vortex chamber 5 is bounded at its upper end in the installed position by a housing cover 6.
  • the housing cover 6 and the majority of the housing 2 are provided inside with a refractory lining 7.
  • a second discharge 8 for the purified exhaust gas passes through the housing cover 6 approximately centrally, wherein the second discharge 8 in a known manner comprises a dip tube 9 which projects into the vortex chamber 5.
  • the dip tube 9 is composed of several pipe sections 10 and provided on its housing cover 6 facing side with an annular connecting flange 11, which is braced with the interposition of a prestressed mineral seal against the swirl chamber 5 facing side of the housing cover 6.
  • the connecting flange 11 is provided over its entire circumference with a plurality of holes 12 through which the dip tube 9 is attached via tie rods 13 against the housing cover 6.
  • a circular opening 14 is provided, whose diameter corresponds approximately to the inner diameter of the dip tube 9 and on the periphery of which bores 15 for receiving the tie rods 13 are also provided.
  • the tie rods 13 are supported on the side facing away from the vortex chamber 5 of the housing cover 6 on a support ring 16, which in turn is firmly connected to the jacket tube 17 of the second discharge 8 and is part of the jacket tube 17.
  • the tie rods 13 are respectively wedged or braced on both sides of the housing cover 6 via wedges 18 and washers 19. In this way, the dip tube 9 is suspended through the housing cover 6 through the support ring 16 on the casing tube 17, as shown schematically in FIG FIG. 3 is shown.
  • FIG. 3 shows the arrangement without the provided therebetween housing cover 6 and without a refractory or mortar delivery.
  • the jacket tube 17 and the support ring 16 are also provided with a refractory lining 7, in such a way that the transition from the jacket tube 17 is designed in the dip tube 9 as a partial conical or oblique inlet.
  • the upper outer edge of the support ring 16 in installation position is arranged eccentrically with respect to the lower inner edge in the installation position, so that a funnel-shaped bevel 20 results in the transition region defined by the support ring 16 of the casing tube 17 in the dip tube 9.
  • the support ring 16 forms in cross section an approximately L-shaped profile with a first leg 21 which extends approximately parallel to the connecting flange and a second leg 22 which extends perpendicular thereto.
  • the second leg 22 extends parallel to the lateral surface of the jacket tube 17.
  • the first leg 21 and the second leg 22 of the support ring profile are connected to each other via gusset plates 23.
  • the gusset plates 23 are welded into the support ring profile.
  • the connection flange 11 of the dip tube 9 is reinforced with gusset plates 23.
  • the diameter of the bores 12 in the connection flange 11 is dimensioned significantly larger than the diameter of the tie rods 13.
  • FIG. 4 is parallel to the connecting flange 11 extending first leg 21 of the support ring 16 with approximately radially with respect to the longitudinal center axis of the dip tube 9 extending relief slots 24 provided that prevent any build-up of tension in the circumferential direction of the support ring.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cyclones (AREA)

Claims (10)

  1. Séparateur de force centrifuge (1) avec au moins un carter (2) formant une chambre de tourbillonnement (5) avec au moins une admission (3) tangentielle avec une extraction (4) inférieure dans la position de montage pour les composants lourds séparés dans le champ centrifuge et avec une extraction (8) traversant un plafond de carter (6) supérieur par rapport à la position de montage, ladite extraction comprenant un tube plongeur (9) s'étendant dans le carter (2), le tube plongeur (9) étant raccordé au côté du plafond de carter (6) regardant vers la chambre de tourbillonnement (5), caractérisé en ce que le tube plongeur (9) est décroché au niveau d'un anneau porteur (16) raccordé au côté du plafond de carter (6) éloigné de la chambre de tourbillonnement (5) avec intercalage du plafond de carter (6).
  2. Séparateur de force centrifuge selon la revendication 1, caractérisé en ce que le tube plongeur (9) est étanchéifié sur le côté avant contre le côté du plafond de carter (6) regardant vers la chambre de tourbillonnement (5).
  3. Séparateur de force centrifuge selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que le tube plongeur (9) est accroché aux barres de traction (13) traversant le plafond de carter (6).
  4. Séparateur de force centrifuge selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le tube plongeur (9) est cylindrique et pourvu d'un flasque de raccordement (11) de forme annulaire disposé concentriquement par rapport à l'axe longitudinal du tube plongeur (9).
  5. Séparateur de force centrifuge selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'anneau porteur (16) est relié de telle sorte à un tube fourreau (17) de l'extraction (8) supérieure que le tube fourreau (17) absorbe la force du poids du tube plongeur (9).
  6. Séparateur de force centrifuge selon la revendication 5, caractérisé en ce que l'anneau porteur (16) est disposé de façon excentrée par rapport au tube fourreau (17).
  7. Séparateur de force centrifuge selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'anneau porteur (16) est pourvu de fentes (24) s'étendant dans le plan radial.
  8. Séparateur de force centrifuge selon l'une quelconque des revendications 3 ou 4, 5, 7 dépendant de la revendication 3, caractérisé en ce que les barres de traction (13) sont fixées de façon sécurisée avec des cales (18) au moins contre l'anneau porteur (16) et/ou contre le flasque de raccordement du tube plongeur (9).
  9. Séparateur de force centrifuge selon l'une quelconque des revendications 3 ou 4, 5, 7, 8 dépendant de la revendication 3, caractérisé en ce que les barres de traction (13) traversent les alésages de l'anneau porteur (16) et/ou du plafond de carter (6) et/ou du flasque de raccordement (11), le diamètre des alésages étant significativement plus grand que le diamètre des barres de traction (13).
  10. Séparateur de force centrifuge selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le tube plongeur (9) est composé d'éléments de tube (10) cylindriques de différentes qualités d'acier.
EP09012607.9A 2008-11-14 2009-10-06 Séparateur de force centrifuge Not-in-force EP2186571B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200931638A SI2186571T1 (sl) 2008-11-14 2009-10-06 Centrifugalni ločevalnik
PL09012607T PL2186571T3 (pl) 2008-11-14 2009-10-06 Separator odśrodkowy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008057480A DE102008057480A1 (de) 2008-11-14 2008-11-14 Fliehkraftabscheider

Publications (3)

Publication Number Publication Date
EP2186571A2 EP2186571A2 (fr) 2010-05-19
EP2186571A3 EP2186571A3 (fr) 2012-08-22
EP2186571B1 true EP2186571B1 (fr) 2017-02-01

Family

ID=41603731

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09012607.9A Not-in-force EP2186571B1 (fr) 2008-11-14 2009-10-06 Séparateur de force centrifuge

Country Status (4)

Country Link
EP (1) EP2186571B1 (fr)
DE (1) DE102008057480A1 (fr)
PL (1) PL2186571T3 (fr)
SI (1) SI2186571T1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US940076A (en) * 1908-08-18 1909-11-16 Jonathan M Seaver Separator.
US1916762A (en) * 1931-05-08 1933-07-04 Locomotive Firebox Co Spark arrester
US3129173A (en) * 1960-08-01 1964-04-14 Hertha M Schulze Centrifugal type liquid-solid separator
DE3228902A1 (de) * 1982-08-03 1984-02-09 Klöckner-Humboldt-Deutz AG, 5000 Köln Zyklonabscheider
US6024874A (en) * 1998-11-03 2000-02-15 Lott; W. Gerald Hydrocyclone separator
JP4980593B2 (ja) * 2005-08-02 2012-07-18 大平洋特殊鋳造株式会社 サスペンションプレヒータのサイクロン内筒
DK176211B1 (da) * 2006-03-24 2007-02-05 Smidth As F L Cyklonseparator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE102008057480A1 (de) 2010-05-20
EP2186571A2 (fr) 2010-05-19
EP2186571A3 (fr) 2012-08-22
SI2186571T1 (sl) 2017-05-31
PL2186571T3 (pl) 2017-08-31

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