EP0104966A2 - Zentrifuge mit Energierückgewinnung - Google Patents

Zentrifuge mit Energierückgewinnung Download PDF

Info

Publication number
EP0104966A2
EP0104966A2 EP83401660A EP83401660A EP0104966A2 EP 0104966 A2 EP0104966 A2 EP 0104966A2 EP 83401660 A EP83401660 A EP 83401660A EP 83401660 A EP83401660 A EP 83401660A EP 0104966 A2 EP0104966 A2 EP 0104966A2
Authority
EP
European Patent Office
Prior art keywords
drum
centrifuge according
centrifuge
liquid
channel
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
EP83401660A
Other languages
English (en)
French (fr)
Other versions
EP0104966B1 (de
EP0104966A3 (en
Inventor
Raymond Fernand Schlegel
René Pierre Bourassin
Michel André Lapautre
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.)
Bertin Technologies SAS
Original Assignee
Bertin et Cie SA
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 Bertin et Cie SA filed Critical Bertin et Cie SA
Publication of EP0104966A2 publication Critical patent/EP0104966A2/de
Publication of EP0104966A3 publication Critical patent/EP0104966A3/fr
Application granted granted Critical
Publication of EP0104966B1 publication Critical patent/EP0104966B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/04—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
    • B04B1/06—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of cylindrical shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/06—Fluid drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/04—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
    • B04B1/08—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B2001/2058—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl with ribbon-type screw conveyor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B2001/2066—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl with additional disc stacks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B2001/2075—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl with means for recovering the energy of the outflowing liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B2001/2083—Configuration of liquid outlets

Definitions

  • the invention relates to an energy recovery centrifuge, more particularly intended for the separation of immiscible liquids of different densities and in which solid particles are dispersed, the centrifuge comprising two rotary coaxial drums, a device for discharging solid materials. and an energy recovery device.
  • French patent 2,361,942 describes a centrifuge with coaxial drums and a horizontal axis used in the paper industry to separate solids from liquids.
  • the charged liquid arrives in the space separating two cylindrical-conical drums. rotating at high speed, a fixed differential speed being produced between the outer drum and the inner drum.
  • the inner drum is provided with a fin constituting an Archimedes screw which permanently removes the deposits of solid materials and evacuates them towards the conical end of the drums.
  • the liquid is discharged at the cylindrical end.
  • French Patent 2,326,981 proposes to equip a centrifuge bowl with vertical axis with a set of conical plates wedged on the central axis. The plates are separated from each other by a small space into which the charged liquid enters and where it separates from its solid particles. The liquid is evacuated towards the interior of the bowl while the particles collect in a biconical chamber, formed by the wall of the bowl, before being expelled radially outwards by operation of an evacuation device.
  • the industrial centrifuge with high flow rate and improved energy efficiency which is the subject of the invention, is particularly suitable for purifying a liquid including in suspension denser solid particles and / or in emulsion droplets of a less dense fluid. .
  • It comprises a rotor essentially constituted by a stack of centrifugation plates rotating at high speed between two coaxial cylindrical drums, means for continuously introducing and discharging the liquid, said liquid completely filling the internal space of the rotor, and means for selective extraction of separated impurities.
  • a first characteristic of the machine is that in the interval between the external cylindrical drum and the internal drum, driven in coaxial rotation independently and respectively provided with means for evacuating the separate phases, is placed the stacking of plates which rotates with the internal drum and which is supplied with liquid to be purified by an axial inlet and a centrifugal impeller.
  • Another characteristic of the invention is a device for recovering the energy of the liquid discharged
  • This device comprises at the outlet of the purified liquid a outlet wheel which comprises vanes integral with the internal drum and forming a centripetal turbine, this turbine being followed by tangential ejectors integral with the external drum and constituting a reaction turnstile, arranged so that the absolute speed of output of the purified liquid is substantially nothing.
  • the turbine and the turnstile restore most of the angular momentum communicated to the liquid in the form of engine torque, which makes it possible to reduce the compensation for friction loss compensation for the power required in continuous mode for the operation of the machine.
  • the centrifuge with horizontal axis shown in FIGS. 1 to 4, schematically comprises an interior drum A, an exterior drum B, a device for removing solid materials C and an energy recovery device D.
  • the liquid to be purified enters the upstream side by the connector 1, equipped with a rotating sealing assembly 2, and extended by a fixed inner sleeve 3, in the hollow shaft 6 whose opposite end is connected to the inner drum A.
  • the shaft 4 is supported by a double ball bearing 5 between the flanges which is provided with a pulley 6 keyed onto the shaft and driven by a belt (not shown).
  • the hollow shaft 4 is connected by a tight elastic coupling 7 to the tubular end 8 of the inner drum A o
  • the corresponding end 9 of the outer drum B is supported by an outer ball bearing 10 and has a pulley 11 which allows its drive at a speed different from that of the inner drum.
  • a sealed ball bearing 12 is disposed between the exterior and interior drums.
  • the other end of the outer drum B is supported by a ball bearing 13.
  • the corresponding end of the inner drum A is held by a sealed ball bearing 14 disposed between the drums.
  • the centrifugation bowl forming the largest part of the outer drum B, consists of a cylindrical hollow body extended on the upstream side by a cylindrical-conical flange secured to its end 9 supported by the bearing 10, and on the downstream side by a flared flange 15 carrying a circular flange 16.
  • On this flange is fixed a head 17 whose cylindrical end 18 is supported by the bearing 13.
  • the head 17 internally carries a movable conical bottom 19, which slides tightly on the one hand, on two stepped bearing surfaces 20, 21 provided in the part of the head adjacent to the flange 16 and on the other hand, in a tubular sleeve 22 added in the head 17 (see the enlarged view of FIG. 2).
  • the movable bottom 19 delimits on the one hand with the flared flange 15 a mud chamber 23 and on the other hand with the part of the inner head 17 within its internal reach 21, a pressure chamber 24 supplied via the channel 25 from a weir 26 which will be described later.
  • the flange 16 of the bowl, pressed against the periphery of the head 17, is not continuous but has bosses 27 regularly distributed around the flange, separated by passages 28 and crossed by bolts mounting 29.
  • the inner drum A is connected by its tubular end 8 to the end of the hollow shaft 4 by which the effluent or the mixture is introduced.
  • treat which reaches the annular space between the outer surface 30 of the inner drum A and the inner wall of the outer drum B by inclined channels 31 forming an input wheel.
  • the outer surface 30 carries longitudinal ribs 32 forming keys by which is rotated a stack of conical plates 33 (shown partially). These frustoconical plates are spaced from each other by stamped or attached radial spacers 33a, their spacing being a function of the size of the particles to be separated and the expected flow.
  • the small bases of the plates are directed downstream in the axial direction of circulation of the liquid to be treated.
  • the stacking of plates is maintained on the upstream side by a plate 34 and on the downstream side by a plate press- 35.
  • a scraper screw 36 At the periphery of the plates is fixed, by means of the plate 34, a scraper screw 36.
  • This screw is constituted for example by a rectangular profile wound in a helix on a cage 37 formed by the assembly of peripheral rings 37a and longitudinal bars 37b.
  • the outside diameter of the screw 36 is slightly smaller than the inside diameter of the bowl B so that it can scrape the solid particles accumulated on the wall and discharge them axially towards the mud chamber 23, the progression resulting from the difference in the speeds of rotation between the inner drum A and the outer drum B.
  • a radial centripetal impeller 38 which is in the form of a frustoconical envelope integral with the plate press 35 to the surface of which are fixed vanes 3 9 projecting into the space between the plate press 35 and the movable bottom 19 of the outer drum B.
  • the impeller 38 forms the first stage of the energy recovery device D, the second stage of which is constituted by. a series of ejectors 40 forming a tourniquet fixed on the cylindrical surface 41 of the exterior drum B extending its head 17.
  • the ejectors 40 formed of attached blocks 42 receive the purified fluid by radial channels 43 (FIG. 4) communicating with the inside the bowl, their ejection nozzles 44, the axis of which is directed substantially tangentially with respect to the cylindrical surface 41 of the head 17 of the external drum B.
  • the tangential jets coming from the ejectors 40 reach a ring of fixed vanes 45, disposed between two radial flanges 46 added in the cylindrical volute 47 for leaving the purified liquid. This volute is fixed to the bearing B of the centrifuge support.
  • the vanes 45 are advantageously adjustable in orientation to preserve the residual angular momentum and arranged in a spiral to facilitate the evacuation of fluid.
  • the central part of the internal drum A has an axial cylindrical cavity 48 placed in communication with the outside of the drum by orifices 49. These orifices allow the passage of the lightest fluid which flows along the external wall 30 and comes gather on the periphery of the cavity 48 which constitutes a reservoir from which an extraction tube 50 permanently scoops the fluid, held by centrifugation against the wall, to evacuate it towards the outside of the centrifuge.
  • the solids evacuation device is composed as previously described of the scraper screw 36 and of the hydraulic evacuation device C, a part of which is constituted by the movable base 19.
  • the overflow 26 is formed by a cylindrical ring 51 fixed on the head 17 and bearing in internal projection two rings 52, 53 axially spaced and of unequal heights, the ring 52 having an inner diameter smaller than that of the ring 53.
  • the ring 52 defines with the external face 54 of the head 17 a first channel 55 and with l ring 53 a second channel 56.
  • a water supply stock 57 passes through the central openings of the rings and opens into the first channel 55, the bottom of which communicates by a channel 58 with an annular chamber 59 situated at the periphery of the bottom mobile 19 between the stepped surfaces 20, 21 of the head 17 of the external drum B.
  • This chamber receives continuously by the fixed stock 57, the channel 55 and the channel 58 a flow of water greater than that flowing through the leakage 60.
  • the excess water overflows from the first channel by filling the second channel 56.
  • a radial channel pierced in the bottom of the chamber 56 communicates by intermediate of channel 25 with pressure chamber 24 del imitated by the movable bottom 19 and the internal face 61 of the head 17. Due to the rotation the centrifuged water exerts sufficient pressure against the movable bottom 19 to maintain its periphery in axial abutment on the radial bearing 62 of the flange 16 , position in which it closes the passages 28 communicating the mud chamber 23 with the outside.
  • the water supply is interrupted by the butt 57.
  • the leakage orifices 60 ensure the emptying of the water chamber 59 and orifices 63 judiciously placed allow the pressure chamber 24 to be emptied.
  • the bottom 19 closes when the weir 26 is again supplied.
  • the fluid to be treated enters continuously into the centrifuge which it completely fills, through the axial hollow shaft 8 in which it begins to acquire a relatively low speed of rotation.
  • a first speeding up is carried out during the passage of the fluid in the inclined channels 31 of the input wheel, connecting the hollow shaft to the annular space comprised between the drums in which the stacking of plates 33 rotates at high speed. , integral with the interior drum A.
  • the fluid to be purified then crosses the set of plates (arrows in strong line) where the centrifugal separation takes place and which constitutes a second stage of setting in speed: in known manner, the fluid to be purified is accelerated by viscosity in the spaces separating the plates 33 so that the solid particles are centrifuged against the wall of the external drum B, while the heaviest fluid thus purified (arrows in dashed lines) flows axially in the space located at the periphery of the stack of plates and is brought back towards the axis by crossing the centripetal impeller 38, which recovers part of its rotational energy.
  • the lightest fluid migrates (arrows in thin lines) towards the inner periphery of each plate and coalesces in the form of a film which flows towards the axis of the centrifuge. Arrived at the interior edge of the plate, the film is divided into large droplets which are very quickly captured on the surface 30 of the interior drum A and flow through the orifices 49 in the reservoir 48 where it is recovered by the tube of shell 50.
  • the heaviest fluid thus freed of solid particles and of the lighter fluid, reaches, after passing through the impeller 38, in the tubular end of the movable bottom 19 and in the radial channels 43, to the ejectors 42 attached to the head 17 of the drum B which ensure a very low absolute speed of exit of the fluid and thus recover its residual kinetic energy.
  • the fixed vanes 45 and the volute 47 exploit the balance of kinetic energy of the fluid to create the slight pressure necessary for its evacuation.
  • the speed of rotation of the assembly inner drum, plate holder and screw is 5000 rpm and that of the outer bowl of ⁇ 200 rpm compared to the outer drum.
  • the number of plates is 560 and the inter-plate space is around 0.5 mm.
  • the centrifuge has a length of 2.5 meters for a diameter of about 0.70 m.
  • the recovery yield is of the order of 95%. related to the kinetic power transmitted to the fluid.
  • the device for evacuating solid materials, with a movable bottom, described above can have drawbacks when used with mud chambers: of moderate volume. In fact, the opening times cannot be short enough, and a large quantity of liquid is evacuated with the solid materials at each opening, which causes an imbalance in the flow of the liquid phases.
  • Figure 6 shows a valve discharge device which can advantageously replace the movable bottom device. It also has the advantage of simpler and lower cost manufacturing.
  • Said evacuation device consists as previously described of the scraper screw 36 and the hydraulic evacuation device.
  • the mud chamber 23 is defined between the inner wall of the flared flange 15 and the conical fixed bottom 64 forming the inner wall of the head 17.
  • the flange 16 of the bowl pressed against the periphery of the head 17, carries evenly distributed all around the flange, radial orifices 65 which communicate by longitudinal passages 66 with radial grooves 67 formed in the face of the flange 16.
  • the longitudinal passages 66 receive sockets 68, one of the ends of which forms the seat of valves 69 provided in the periphery of the head 170
  • the channels 58 provided in the head 17, open out from a side in the channel 55, receiving water from the supply stock 57, and on the other in the valve chambers 70.
  • the movable parts of the valves 71 slide in with play / dea bores 72 drilled parallel to the axis at the periphery of the head. Sealed passages 73, mounted on the free openings of the bores, carry a thread 74 receiving screw stops 75. These stops make it possible to adjust the opening between the movable bodies of the valves and their seats.
  • the operating mode of the valve sludge evacuation device is as follows: the water arriving through the supply stock 57 pours into the channel 55 of the weir 26 and is sent under the action of centrifugal force, by the channel 58 in the valve chamber 70 o
  • the water exerts a pressure against the rear face of the movable body of the valve and keeps it against the seat 68 by closing the communication between the mud chamber 23 and the groove 67 leading to the outside.
  • Part of the water in the chamber 70 flows around the valve body 71 towards the outside as a result of the clearance provided between the bore and the mobile body.
  • the solids evacuation sections (5 to 10mm 2 ) are chosen according to the volume of the mud chamber and the flow speeds to obtain easily controllable opening times (10 to 30s) without risk of disturbing the flows. liquid.
  • scraper vanes 76 which sweep the chamber 23 are provided at the end of the scraper screw 36 and of the vanes 39 in order to avoid asymmetrical accumulations of solids during the emptying phases.

Landscapes

  • Centrifugal Separators (AREA)
EP83401660A 1982-08-27 1983-08-12 Zentrifuge mit Energierückgewinnung Expired EP0104966B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8214702A FR2532198B1 (fr) 1982-08-27 1982-08-27 Centrifugeuse a recuperation d'energie
FR8214702 1982-08-27

Publications (3)

Publication Number Publication Date
EP0104966A2 true EP0104966A2 (de) 1984-04-04
EP0104966A3 EP0104966A3 (en) 1985-09-11
EP0104966B1 EP0104966B1 (de) 1988-12-07

Family

ID=9277084

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83401660A Expired EP0104966B1 (de) 1982-08-27 1983-08-12 Zentrifuge mit Energierückgewinnung

Country Status (9)

Country Link
US (1) US4508530A (de)
EP (1) EP0104966B1 (de)
JP (1) JPS5959261A (de)
KR (1) KR890000146B1 (de)
BR (1) BR8304641A (de)
DE (1) DE3378615D1 (de)
DK (1) DK159908C (de)
ES (1) ES525172A0 (de)
FR (1) FR2532198B1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2639258A1 (en) * 1988-11-24 1990-05-25 Bertin & Cie Centrifuge for the purification of a liquid
JPH0332570A (ja) * 1989-06-27 1991-02-13 Okuma Mach Works Ltd 工具軸スリーブ交換式回転工具軸ユニット
US5637217A (en) * 1995-01-25 1997-06-10 Fleetguard, Inc. Self-driven, cone-stack type centrifuge
GB2314036B (en) * 1996-06-10 2000-02-02 Fram Europ Centrifugal filter
SE9701223D0 (sv) * 1997-04-04 1997-04-04 Alfa Laval Ab Centrifugalseparator med central axel
US6017300A (en) * 1998-08-19 2000-01-25 Fleetguard, Inc. High performance soot removing centrifuge with impulse turbine
US7060019B2 (en) 2000-11-14 2006-06-13 Westfalia Separator Ag Solid bowl screw centrifuge comprising a distributor
US6364822B1 (en) 2000-12-07 2002-04-02 Fleetguard, Inc. Hero-turbine centrifuge with drainage enhancing baffle devices
DE10065060B4 (de) 2000-12-27 2004-07-08 Westfalia Separator Ag Vollmantel-Schneckenzentrifuge mit Tellereinsatz
US6893389B1 (en) 2002-09-26 2005-05-17 Fleetguard, Inc. Disposable centrifuge with molded gear drive and impulse turbine
US7022061B2 (en) * 2002-10-15 2006-04-04 Andritz Ag Centrifuge discharge port with power recovery
US8234457B2 (en) * 2006-06-30 2012-07-31 Seagate Technology Llc Dynamic adaptive flushing of cached data
US9126207B2 (en) 2010-04-22 2015-09-08 Specialist Process Technologies Limited Separator for separating a multiphase mixture
US20110263405A1 (en) * 2010-04-22 2011-10-27 Specialist Process Technologies Limited Separator
DE102010035217B4 (de) * 2010-08-24 2013-09-12 Johann-Marius Milosiu Verfahren und Zentrifuge mit Energierückgewinnung

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB574667A (en) * 1943-07-13 1946-01-15 Separator Ab A centrifugal bowl for separating sludge-containing liquids
US2747793A (en) * 1952-12-18 1956-05-29 Alfred M Caddell Multiple angular, energy compensating centrifuge
FR1455032A (fr) * 1963-07-11 1966-10-07 Flottweg Motoren Werk Centrifugeuse à enveloppe pleine
US3430853A (en) * 1966-10-07 1969-03-04 Samuel A Kirk Turbine centrifuge
DE1532676A1 (de) * 1965-10-18 1970-02-05 Alfa Laval Ab Schlammzentrifuge mit waehrend des Betriebs stattfindendem Schlammaustritt
DE2545754A1 (de) * 1975-09-03 1977-04-14 Westfalia Separator Ag Schleudertrommel mit ablassventilen
FR2343509A1 (fr) * 1976-03-09 1977-10-07 Westfalia Separator Ag Bol de centrifugeur avec soupapes d'evacuation a commande hydraulique
FR2361942A1 (fr) * 1976-08-20 1978-03-17 Koninklijke Papierfab Nv Centrifugeuse a tambours coaxiaux
FR2379320A1 (fr) * 1977-02-05 1978-09-01 Westfalia Separator Ag Bol centrifuge a vidange automatique
GB2088255A (en) * 1980-12-03 1982-06-09 Bird Machine Co Centrifuges

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2670131A (en) * 1951-05-23 1954-02-23 Knowles Associates Centrifuge with interstage washing
NL6406054A (de) * 1963-07-25 1965-01-26
SU539611A1 (ru) * 1974-06-25 1976-12-25 Проектный И Научно-Исследовательский Институт "Гипроникель" Пакет сепарирующих тарелок к центрифуге
AR205952A1 (es) * 1975-01-03 1976-06-15 Pennwalt Corp Una centrifuga decantadora

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB574667A (en) * 1943-07-13 1946-01-15 Separator Ab A centrifugal bowl for separating sludge-containing liquids
US2747793A (en) * 1952-12-18 1956-05-29 Alfred M Caddell Multiple angular, energy compensating centrifuge
FR1455032A (fr) * 1963-07-11 1966-10-07 Flottweg Motoren Werk Centrifugeuse à enveloppe pleine
DE1532676A1 (de) * 1965-10-18 1970-02-05 Alfa Laval Ab Schlammzentrifuge mit waehrend des Betriebs stattfindendem Schlammaustritt
US3430853A (en) * 1966-10-07 1969-03-04 Samuel A Kirk Turbine centrifuge
DE2545754A1 (de) * 1975-09-03 1977-04-14 Westfalia Separator Ag Schleudertrommel mit ablassventilen
FR2343509A1 (fr) * 1976-03-09 1977-10-07 Westfalia Separator Ag Bol de centrifugeur avec soupapes d'evacuation a commande hydraulique
FR2361942A1 (fr) * 1976-08-20 1978-03-17 Koninklijke Papierfab Nv Centrifugeuse a tambours coaxiaux
FR2379320A1 (fr) * 1977-02-05 1978-09-01 Westfalia Separator Ag Bol centrifuge a vidange automatique
GB2088255A (en) * 1980-12-03 1982-06-09 Bird Machine Co Centrifuges

Also Published As

Publication number Publication date
KR840005670A (ko) 1984-11-15
EP0104966B1 (de) 1988-12-07
DK159908B (da) 1990-12-31
JPS5959261A (ja) 1984-04-05
DK389383D0 (da) 1983-08-25
ES8406901A1 (es) 1984-08-16
FR2532198A1 (fr) 1984-03-02
FR2532198B1 (fr) 1985-06-21
DE3378615D1 (en) 1989-01-12
US4508530A (en) 1985-04-02
ES525172A0 (es) 1984-08-16
BR8304641A (pt) 1984-04-10
DK159908C (da) 1991-05-21
EP0104966A3 (en) 1985-09-11
DK389383A (da) 1984-02-28
KR890000146B1 (ko) 1989-03-08

Similar Documents

Publication Publication Date Title
EP0104966B1 (de) Zentrifuge mit Energierückgewinnung
EP0228097B1 (de) Rotierender Vortex-Separator für eine heterogene Flüssigkeit
FR2486824A1 (fr) Centrifugeuse a bol plein
JP3848372B2 (ja) 液体から固体粒子を不連続に分離するための装置及び方法
FR2697447A1 (fr) Dispositif et procédé pour effectuer la séparation de phases par filtration et centrifugation.
FR2546419A1 (fr) Appareillage pour deshydrater de la boue dans la zone de centrifugation d'une centrifugeuse a enveloppe pleine
FR2545005A1 (fr) Centrifugeuse a cuve solide, a rotation continue et de grande capacite
EP0037347B1 (de) Verfahren und Vorrichtung zur Abscheidung von Partikeln in einem Fluidum, insbesondere zur Reinigung von Suspensionen in der Papierindustrie
WO1999025479A1 (fr) Dispositif et procede pour la separation d'un melange heterogene
FR2520258A1 (fr) Extracteur centrifuge a contre-courant a enveloppe continue, fonctionnant en continu
EP0508915A1 (de) Mono- und mehrstufiger Zentrifugal-Extraktor
EP0359682B1 (de) Vorrichtung zur selektiven Abscheidung von Partikeln in einem Fluidum, insbesondere zur Reinigung von Suspensionen in der Papierindustrie
FR2648725A1 (fr) Procede et dispositif de desaeration de liquides
WO2004002631A2 (fr) Extracteur centrifuge annulaire a rotor d'agitation noye
EP2866944B1 (de) Zentrifugalabscheider mit laminarfluss
EP0078727B1 (de) Einrichtung zum Filtrieren von, in einer Flüssigkeit sich befindenden, vielartigen Verunreinigungen
EP0108684B2 (de) Installation und Verfahren zum Separieren von Bestandteilen einer Suspension
BE486877A (de)
EP0287462A2 (de) Verfahren und Vorrichtung zur Zentrifugaltrennung einer Mischung von mehreren Phasen
FR2502512A1 (fr) Appareil d'extraction de corps lourds etrangers de matieres moins denses telles que des recoltes, transportees dans un liquide
FR2635023A1 (fr) Appareil separateur centrifuge pour le traitement d'un melange liquide
FR2639258A1 (en) Centrifuge for the purification of a liquid
BE522765A (de)
FR2654754A1 (fr) Machine pour separer des particules d'un courant de pate et pour diviser la pate en fractions.
FR2635989A1 (fr) Filtre centrifuge a tambour, a decolmatage et ejection automatiques

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB IT SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): DE FR GB IT SE

17P Request for examination filed

Effective date: 19851128

17Q First examination report despatched

Effective date: 19870108

R17C First examination report despatched (corrected)

Effective date: 19870505

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT SE

REF Corresponds to:

Ref document number: 3378615

Country of ref document: DE

Date of ref document: 19890112

ITF It: translation for a ep patent filed

Owner name: STUDIO CONS. BREVETTUALE S.R.L.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 83401660.2

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19950710

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19950804

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19950817

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19950826

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19960812

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19960813

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19960812

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19970430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19970501

EUG Se: european patent has lapsed

Ref document number: 83401660.2

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST