EP0764055B1 - Abscheide-und reinigungsvorrichtung für wenigstens ein verschmutztes flussigkeitsgemisch - Google Patents

Abscheide-und reinigungsvorrichtung für wenigstens ein verschmutztes flussigkeitsgemisch Download PDF

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Publication number
EP0764055B1
EP0764055B1 EP95923367A EP95923367A EP0764055B1 EP 0764055 B1 EP0764055 B1 EP 0764055B1 EP 95923367 A EP95923367 A EP 95923367A EP 95923367 A EP95923367 A EP 95923367A EP 0764055 B1 EP0764055 B1 EP 0764055B1
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Prior art keywords
rotor
cylindrical body
plates
mixture
treated
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Expired - Lifetime
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EP95923367A
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English (en)
French (fr)
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EP0764055A1 (de
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Pierre Laurent Saget
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/12—Centrifuges in which rotors other than bowls generate centrifugal effects in stationary containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/12—Centrifuges in which rotors other than bowls generate centrifugal effects in stationary containers
    • B04B2005/125—Centrifuges in which rotors other than bowls generate centrifugal effects in stationary containers the rotors comprising separating walls

Definitions

  • fluid mixture generally designates a gaseous or liquid mixture polluted by solid, liquid or mixed.
  • FIG. 1 represents schematically, from a given starting point A, the trajectories of particles of different dimensions, in an apparatus comprising a rotor provided with plates 1 and mounted in a fixed cylindrical body 2.
  • the lowest trajectories designated by the references t 1 and t 2 , relate to impurities whose dimensions are respectively of the order of 5 microns and 3 microns.
  • the references t 3 to t 11 designate, from bottom to top, the trajectories of impurities whose dimensions are less than 3 microns and go down, the trajectory t 11 relating more precisely to the particles whose dimensions are of the order of 0.2 microns.
  • the present invention proposes to remedy these drawbacks of existing devices to achieve significantly greater degrees of separation high.
  • the input member is located between the rotor and the member extraction, and has an annular chamber having one end upper closed and an open lower end connected to the space annular, an inlet of the mixture to be treated into said annular chamber, and a central column with upper and lower ends open, while the apparatus includes means for generating, in annular space, a downward helical movement in the same direction of rotation as said upward helical movement.
  • this new concept does not not attempt to modify or arrange the annular space to avoid gas lift, but aims to use it to create movement descending helical.
  • the fluid mixture entering the device is first subjected to helical movement down to the bottom of the rotor, then back in the upward helical movement through the openings in the plates of this rotor, and crosses the central column of the input organ before coming out purified by the extraction member.
  • This flow including a peripheral helical movement descending and a central ascending helical movement, the speed of which rotation is greater than that of the previous one, corresponds to a flow cyclonic conventional, that the invention allows to control and bring to profit for centrifugal separation.
  • the final centrifugal separation is carried out in the central ascending helical movement. Its very high rotation speed separates the smaller particles that settle on the plates and are driven towards the periphery of the rotor, and therefore towards the annular space. They can then aggregate with already separated particles and be entrained down to be collected in the collection hopper. Some very small particles, if they remain unaggregated, and if they are not separated during the optional intermediate separation stage, will be recycled in the helical movement where they will be again subjected to the centrifugal separation process.
  • the downward helical movement therefore has a double effect, since it not only avoids the rise of particles in the annular space, but also to carry out a first separation of the fluid mixture as soon as it enters the device.
  • Means for generating the downward helical movement include a helical distributor having a plurality of blades oblique fixed and arranged in the upper part of the annular space, and means for guiding the fluid mixture in this annular space, associated with the rotor.
  • the helical distributor accelerates the fluid mixture entering the device, the inclination of the oblique blades being determined so as to give the flow a tangential speed adapted to the speed of rotation of the rotor and to avoid the appearance of turbulence in space annular.
  • the apparatus comprises a member for sequestration mounted fixed in the cylindrical body, under the rotor and above the collection hopper, and which comprises a plurality of blades radial, extending from a region near the body wall cylindrical to a central region and raised relative to a plane perpendicular to the rotor axis, in the opposite direction to the direction of rotation of said rotor.
  • the mixture coming out of the downward helical movement and approaching the upward helical movement forms a vortex in the part of the cylindrical body of the device located under the rotor.
  • the organ of sequestration allows this whirlpool to be used to carry out the stage separation intermediate previously mentioned.
  • the blades inclined radials trap particles in the lower part whirlwind.
  • the general reference 10 in FIG. 2 designates an apparatus separator and purifier of pollution of at least one fluid mixture according to the invention.
  • This device comprises a cylindrical body 12, a member 14 inlet of the fluid mixture into the fixed cylindrical body 12, a rotor 16, mounted in the cylindrical body 12 and having a stack of at least two perforated plates 18 which extend radially towards the wall of the cylindrical body 12, while leaving an annular space 20 between the periphery of the plates and said wall.
  • the rotor 16 cooperates with means generating a pressure drop at the top of the device 10.
  • This rotor the direction of rotation is indicated by arrow R, generates a helical movement upward of the mixture to be treated in the same direction of rotation.
  • the apparatus further comprises a hopper 22 for collecting the phase heavy separate, this hopper being connected to the cylindrical body 12 under the rotor 16 and being provided with a means 24 of forced evacuation isolated from outside.
  • the apparatus also comprises a member 26 for extracting the mixture treated, connected to the cylindrical body 12 above the rotor 16.
  • the mixture to be treated enters in the direction of arrow E and the outlet, by the extraction member, of the treated mixture takes place in the direction arrow S.
  • the extraction member 26 is located at the top of the device, but the means to generate the pressure drop and the means to drive the rotor in rotation are located above this member 26 since, as indicated by the line L in dashed lines, the entire upper part of the device is not shown.
  • the collection hopper is located at the bottom of the appliance 10.
  • the input member 14 is located between the rotor 16 and the extraction member 26.
  • This inlet member 14 has a annular chamber 28 whose upper end 28a is closed, while the lower end 28b is open and is connected to the annular space 20.
  • the member 14 also has an inlet 30 of the mixture to be treated which opens into the annular chamber 28.
  • this entry 30 can be produced by a tangential input volute.
  • the member 14 also has a central column 32 which is separate of the annular chamber 28 by a cylindrical wall 34.
  • the column central 32 has an open upper end 32a and one end lower 32b also open.
  • the apparatus includes means for generating, in the annular space 20 a downward helical movement in the same direction of rotation as the above-mentioned helical upward movement.
  • the arrows F symbolize the general direction of circulation of a mixing in the device 10. These arrows F do not, however, take into account centrifugal fields giving rise to separation.
  • Means for generating the downward helical movement include a helical distributor 36, arranged in the upper part annular space 20, i.e. just below the chamber annular 28, and means for guiding the fluid mixture in space annular 20, associated with the rotor, and which will be explained below.
  • the helical distributor 36 shown in Figures 3a and 3b, is in the form of an annular element fixed to the wall of the body cylindrical 12, and has a plurality of fixed oblique blades designated by the general reference 38.
  • the blade oblique 38a extends over the sum of the angular sectors a and b.
  • the oblique blades are therefore arranged in slight axial overlap.
  • FIG. 3b it can be seen that passing the rotating mixture in the direction R between the oblique blades 38 accelerates the latter and gives its tangential speed a component down.
  • the inclination of the blades oblique is calculated so that this tangential speed of rotation is adapted to that of the rotor.
  • the means for guiding the fluid mixture in the annular space 20 are better visible in Figures 2 and 8. They include a fixed ring 40 disposed between the lower end of the inner wall 34 of the chamber annular 28 and the periphery of the upper plate 18a of the rotor 16. We see besides that the helical distributor 36 is placed at the level of this ring 40.
  • These guide means further include skirts peripherals 42 which equip the periphery of the plates 18 of the rotor 16. If we consider one of the rotor plates, for example plate 18b, we see that the peripheral skirt 42b which the team extends downward at least until the axial height of the periphery of the plate 18c immediately located under plate 18b. This is of course not visible on the bottom plate 18d, the skirt of which can however be produced in a similar manner to that of other plates.
  • the fixed ring 40 and the skirts 42 play the role of deflectors which naturally cause the gas mixture to flow down rather only to go up between the plates.
  • the plates 18 of the rotor have the shape of cones open downwards.
  • the skirts peripherals 42 also have the shape of cones open at the bottom, whose angle at the top is however less than that of the plates.
  • the device makes it possible to carry out a centrifugal pre-separation in the annular space 20 and a separation final centrifugal in the central part. It can make it possible, in in addition, an intermediate stage of separation in the space 44 which is located, in the cylindrical body 12, below the rotor 16 and above the collection hopper 22.
  • the apparatus includes a sequestration 46 fixedly mounted in the cylindrical body 12 and to the part space 44.
  • This sequestration organ 46 shown in more detail on the Figures 4a and 4b, comprises a plurality of radial blades 48 which extend from a region close to the wall of the body 12 to a central region and are raised relative to a plane P perpendicular to the axis I of the rotor 16, in the opposite direction to the direction of rotation R of said rotor.
  • the direction of tilt of these blades 46 allows them to trap particles entrained in the part bottom of the vortex that occurs in space 44, and to drive them to the hopper 22.
  • the sequestration device 46 can for example be fixed on a fixed sleeve mounted on a bearing holding the rotor shaft.
  • the blades 48 are integral a disc 50 having perforated sectors 52.
  • the blades 48 are fixed on one of the radial edges of the sectors 52, raised relative to the disc 50 and extend beyond the other radial edge of sector 52.
  • the disc 50 can be fixed on the wall of the cylindrical body 12, in which case its periphery has recesses 54 allowing the free passage of impurities collected along from the wall 12 to the hopper 22.
  • the sequestration 46 is fixed inside a trapping cylinder 56, and in the lower part of the latter.
  • This trapping cylinder 56 is parallel to the cylindrical body 12 and mounted in space 44 while preserving a radial clearance j relative to the wall of the cylindrical body 12.
  • the separated particles descending along the wall of the body 12 are thus trapped in space formed by the clearance j between the wall of the cylinder 56 and that of the body 12 and descend into the collection hopper 22 without risking being put back into circulation in the fluid mixture.
  • the openings in the plates are constituted by slots 58 which have two radial edges 59, thus an outer edge 60 and an inner edge 61 which extend substantially along the circumference of the plates 18.
  • the edge external device 60 of the slots 58 is equipped with a flange directed towards the high.
  • this rim is designated by the reference 62 and is constituted by an upward fold of a tongue formed when cutting the slots 58.
  • the edges equipping each of the slots of the same plate 18 are constituted by portions of the same annular deflector 64 integral with the upper face of this plate.
  • This deflector 64 includes a portion 64a parallel to the surface of the plates and fixed on these plates for example using points of welding, and a raised part 64b.
  • peripheral skirts 42 plates 18 and the edges 62 or 64b of the slots 58 of these plates are advantageously directed in substantially parallel directions.
  • the edges contribute to guiding the fluid mixture in the annular space 20 and a semi-continuous wall formed is obtained by the ring 40, the edges and the skirts.
  • skirt 42 of a given plate extends downward at least to the level of the periphery of the plate immediately lower, in fact the skirts 42 can even be in slight overlap with each other.
  • the device may include an external jacket 70, arranged around a part of the cylindrical body 12 and which, with the wall of said body 12, delimits an enclosure 72.
  • Means are used to circulate a cooling fluid in this enclosure 72. These means include for example a nozzle 74 for injecting the liquid cooling, arranged at the upper part of the enclosure 72, and an outlet lower 76 of the liquid.
  • the coolant cools the wall of the cylindrical body 12, which makes it possible to cool the fluid mixture circulating in the device thanks to the convection phenomena which find increased due to the existence of the centrifugal field which reigns in the device.
  • the outer jacket 70 can cover part of the body 12 or its whole.
  • the shaft 15 of the rotor 16 is held in its lower part by a bearing 78.
  • the fluid mixture which can be relatively hot, circulates in the vicinity of the bearing 78, the latter may heat up.
  • the enclosure 72 can be extended below the bearing 78, and provide therein circulation channels for the cooling.
  • the apparatus comprises means for injecting a washing liquid into the annular space 20, in the vicinity of its upper end, directly below the helical distributor 36.
  • These means consist for example in nozzles 80 for injecting a washing liquid regularly distributed to the circumference of the upper part of the annular space 20. The liquid washing will cause the separated impurities in the annular space 20 to the collection hopper 22.
  • the radial dimensions r 1 of the central column 32 of the input member 14 are substantially equal to the extreme radial dimensions of the openings in the rotor 16.
  • the upward helical movement thus circulates in a column whose radius remains substantially constant from the bottom of the rotor 16 to the top of the central column 32.
  • the radius r 1 being much smaller than the radius r 2 of the cylindrical body 12, which corresponds to the radius of the downward helical movement, the fluid mixture is greatly accelerated tangentially from this downward helical movement to the upward helical movement.
  • the radial dimensions spaces for circulation of the fluid mixture formed in the elements of the apparatus 10 which are located above the input member 14 are advantageously at most equal to those of the central column 32.

Claims (12)

  1. Abscheide- und Reinigungsvorrichtung (10) für wenigstens ein verschmutztes Fluidgemisch, umfassend:
    eine Einrichtung (14) zum Eintritt des zu behandelnden Fluidgemisches in einen fixen zylinderischen Körper (12),
    einen Rotor (16), der in diesem zylindrischen Körper (12) angebracht ist und eine lagenweise Anordnung von mindestens zwei Platten (18) mit Aussparungen aufweist, die sich radial zur Wand des zylindrischen Körpers (12) erstrecken, wobei zwischen dem Umfang der Platten und der Wand des zylindrischen Körpers ein ringförmiger Raum (20) vorhanden ist, wobei der Rotor (16) mit Mitteln zusammenwirkt, die einen Druckabfall zum oberen Teil der Vorrichtung (10) erzeugen und eine helixförmige aufsteigende Bewegung des zu behandelnden Gemisches erzeugen, deren Drehsinn (R) gleich dem des Rotors ist,
    einen Bunker bzw. Trichter (22) zum Sammeln der schweren Phase, der unter dem Rotor (16) mit dem zylindrischen Körper (12) verbunden ist und mit einem Zwangsentleerungsmittel (24), das nach außen isoliert ist, ausgestattet ist,
    eine Einrichtung (26) zum Ausbringen des behandelten Gemisches, die über dem Rotor (16) mit dem zylindrischen Körper (12) verbunden ist,
       dadurch gekennzeichnet, daß die Eintrittseinrichtung (14) zwischen dem Rotor (16) und der Ausbringeinrichtung (26) angeordnet ist und eine ringförmige Kammer (28), die ein geschlossenes oberes Ende (28a) und ein offenes unteres, mit dem ringförmigen Raum (20) verbundenes Ende (28b) aufweist, einen Eintritt (30) für das zu behandelnde Gemisch in die ringförmige Kammer, und eine zentrale, ein offenes oberes (32a) und unteres (32b) Ende aufweisende Säule (32) umfaßt, und daß sie Mittel (36, 40, 42) umfaßt, um im ringförmigen Raum (20) eine helixförmige absteigende Bewegung vom gleichen Drehsinn (R) wie die helixförmige aufsteigende Bewegung zu erzeugen.
  2. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß die Mittel zum Erzeugen einer helixförmigen absteigenden Bewegung einen helixförmigen Verteiler (36), der eine Vielzahl von fixen, schrägen Blättern (38) aufweist und im oberen Teil des ringförmigen Raums (20) angeordnet ist, und Mittel (40, 42) zum Leiten des Fluidgemisches in diesem ringförmigen Raum (20), assoziiert mit dem Rotor (16), umfassen.
  3. Vorrichtung gemäß einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß sie eine im zylindrischen Körper (12), unter dem Rotor (16) und über dem Sammelbunker (22), fest montierte Sequestrationseinrichtung (46) umfaßt, wobei die Sequestrationseinrichtung eine Vielzahl radialer Blätter (48) umfaßt, die sich von einem Bereich nahe der Wand des zylindrischen Körpers (12) aus bis zu einem zentralen Bereich erstrecken und bezüglich einer zur Achse (I) des Rotors (16) im rechten Winkel stehenden Ebene (P) hochgezogen sind, im entgegengesetzten Sinn zum Drehsinn (R) des Rotors.
  4. Vorrichtung gemäß Anspruch 3, dadurch gekennzeichnet, daß sie einen Fangzylinder (56) umfaßt, der parallel zum zylindrischen Körper (12) ist und so montiert ist, daß er ein radiales Spiel (j) bezüglich der Wand des Körpers (12) behält, und daß die Sequestrationseinrichtung (46) mit dem Zylinder (56) verbunden ist und im Inneren des letzteren gegen seinen unteren Teil hin angeordnet ist.
  5. Vorrichtung gemäß einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Leitmittel einen fixen Ring (40) umfassen, der zwischen dem unteren Ende der inneren Wand (34) der ringförmigen Kammer (28) und dem Umfang der oberen Platte (18a) des Rotors (16) angeordnet ist, wobei der Umfang jeder Platte (18) des Rotors (16) mit Umfangsschürzen (42) versehen ist, wobei die Schürze (42b), mit der der Umfang einer gegebenen Platte (18b) versehen ist, sich nach unten hin mindestens bis zur axialen Höhe des Umfangs (18c) der unmittelbar unter der gegebenen Platte (18b) angeordneten Platte erstreckt.
  6. Vorrichtung gemäß Anspruch 5, dadurch gekennzeichnet, daß die Platten (18) des Rotors und die ringförmigen Schürzen (42) die Form von nach unten offenen Kegeln aufweisen, wobei der Spitzenwinkel der Platten (18) größer als der Spitzenwinkel der Schürzen (42) ist.
  7. Vorrichtung gemäß einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Aussparungen der Platten (18) des Rotors (16) durch Schlitze (58) gebildet sind, die zwei radiale Ränder (59) und zwei periphere Ränder, einen inneren (61) bzw. einen äußeren (60) Rand, aufweisen, die sich im wesentlichen gemäß dem Umfang der Platten (18) erstrecken, und daß der äußere periphere Rand (60) mit einer nach oben gerichteten Leiste (62, 64b) ausgestattet ist.
  8. Vorrichtung gemäß Anspruch 7, dadurch gekennzeichnet, daß die Leisten, mit denen die Schlitze einer Platte ausgestattet sind, durch Teile (64b) eines ringförmigen Deflektors (64), der mit der oberen Oberfläche der Platte (18) verbunden ist, gebildet sind.
  9. Vorrichtung gemäß einem der Ansprüche 5 und 6 und einem der Ansprüche 7 und 8, dadurch gekennzeichnet, daß die Umfangsschürzen (42) der Platten (18) und die Leisten (62, 64b) der Schlitze der Platten im wesentlichen parallel gerichtet sind.
  10. Vorrichtung gemäß einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß sie einen äußeren Mantel (70), der um zumindest einen Teil des zylindrischen Körpers (12) angeordnet ist und einen Raum (72) begrenzt, und Mittel (74, 76), um ein Kühlfluid im Raum (72) zirkulieren zu lassen, umfaßt.
  11. Vorrichtung gemäß einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß sie Mittel zum Einspritzen einer Waschflüssigkeit in den ringförmigen Raum (20), in der Nähe seines oberen Endes, umfaßt.
  12. Vorrichtung gemäß einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die radialen Abmessungen (r1) der zentralen Säule (32) der Eintrittseinrichtung (14) im wesentlichen gleich den äußeren radialen Abmessungen der Aussparungen des Rotors (16) sind, und daß die radialen Abmessungen der Zirkulationsräume des Fluidgemisches, die in den Elementen der Vorrichtung ausgespart sind, die über der Eintrittseinrichtung (14) angeordnet sind, allerhöchstens gleich denen der zentralen Säule (32) sind.
EP95923367A 1994-06-09 1995-06-09 Abscheide-und reinigungsvorrichtung für wenigstens ein verschmutztes flussigkeitsgemisch Expired - Lifetime EP0764055B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9407057 1994-06-09
FR9407057A FR2720958B1 (fr) 1994-06-09 1994-06-09 Appareil séparateur et épurateur de la pollution d'au moins un mélange fluide.
PCT/FR1995/000759 WO1995033572A1 (fr) 1994-06-09 1995-06-09 Appareil separateur et epurateur de la pollution d'au moins un melange fluide

Publications (2)

Publication Number Publication Date
EP0764055A1 EP0764055A1 (de) 1997-03-26
EP0764055B1 true EP0764055B1 (de) 1998-08-26

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EP95923367A Expired - Lifetime EP0764055B1 (de) 1994-06-09 1995-06-09 Abscheide-und reinigungsvorrichtung für wenigstens ein verschmutztes flussigkeitsgemisch

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Country Link
US (1) US5851396A (de)
EP (1) EP0764055B1 (de)
AT (1) ATE170107T1 (de)
DE (1) DE69504340T2 (de)
FR (1) FR2720958B1 (de)
WO (1) WO1995033572A1 (de)

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FR2768067A1 (fr) * 1997-09-08 1999-03-12 Pierre Saget Appareil separateur et epurateur de la pollution d'au moins un melange fluide
CN1090591C (zh) * 1998-11-24 2002-09-11 梁维安 漩涡污水处理器
US6183641B1 (en) * 1999-01-08 2001-02-06 Fantom Technologies Inc. Prandtl layer turbine
JP2002539916A (ja) * 1999-03-24 2002-11-26 エンバイアメンタル セパレーション テクノロジーズ プロプライエタリー リミテッド 分離機
US6544416B2 (en) * 2000-04-26 2003-04-08 Marine Biotech Inc. Systems and methods for separating solids from a fluid environment
US6485854B1 (en) * 2000-10-19 2002-11-26 General Motors Corporation Gas-liquid separator for fuel cell system
US20040144717A1 (en) * 2003-01-29 2004-07-29 Sheng Henry P. Apparatus for separating immiscible liquids
SE527719C2 (sv) * 2004-06-16 2006-05-23 3Nine Ab Rotorenhet till en centrifugalseparator
FR2879942B1 (fr) * 2004-12-27 2007-01-26 Commissariat Energie Atomique Dispositif d'epuration d'un flux gazeux contenant des vapeurs condensables
SE529611C2 (sv) 2006-02-13 2007-10-02 Alfa Laval Corp Ab Centrifugalseparator
SE530690C2 (sv) 2006-04-04 2008-08-12 Alfa Laval Corp Ab Rotorenhet för en centrifugalseparator
SE531722C2 (sv) * 2007-08-28 2009-07-21 Alfa Laval Tumba Ab Centrifugalseparator och förfarande för rening av en gas
WO2009051545A1 (en) * 2007-10-15 2009-04-23 Atlas Copco Drills Ab Device and method for separating particles out from a fluid
EP3178565B1 (de) * 2012-05-14 2018-06-27 Alfa Laval Corporate AB Tellerstapel für einen fliehkraftabscheider
DE102014220158A1 (de) * 2014-10-06 2016-04-07 Elringklinger Ag Abscheidevorrichtung
EP3207996B1 (de) 2016-02-22 2019-05-08 Alfa Laval Corporate AB Zentrifugenrotor für einen zentrifugalabscheider, zentrifugalabscheider, verfahren zum abscheiden und konische platte

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Publication number Publication date
WO1995033572A1 (fr) 1995-12-14
US5851396A (en) 1998-12-22
EP0764055A1 (de) 1997-03-26
DE69504340D1 (de) 1998-10-01
ATE170107T1 (de) 1998-09-15
FR2720958A1 (fr) 1995-12-15
DE69504340T2 (de) 1999-05-06
FR2720958B1 (fr) 1996-08-30

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