EP0028996B1 - Perfectionnements aux séparateurs centrifuges du genre cyclone - Google Patents

Perfectionnements aux séparateurs centrifuges du genre cyclone Download PDF

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Publication number
EP0028996B1
EP0028996B1 EP80420122A EP80420122A EP0028996B1 EP 0028996 B1 EP0028996 B1 EP 0028996B1 EP 80420122 A EP80420122 A EP 80420122A EP 80420122 A EP80420122 A EP 80420122A EP 0028996 B1 EP0028996 B1 EP 0028996B1
Authority
EP
European Patent Office
Prior art keywords
fluid
outlet device
core
stage
blades
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
Application number
EP80420122A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0028996A1 (fr
Inventor
Pierre Georges Vicard
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.)
Lab Societe A Responsabilite Francaise Ste
Original Assignee
Lab Societe A Responsabilite Francaise Ste
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 Lab Societe A Responsabilite Francaise Ste filed Critical Lab Societe A Responsabilite Francaise Ste
Publication of EP0028996A1 publication Critical patent/EP0028996A1/fr
Application granted granted Critical
Publication of EP0028996B1 publication Critical patent/EP0028996B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/04—Plant or installations having external electricity supply dry type
    • B03C3/14—Plant or installations having external electricity supply dry type characterised by the additional use of mechanical effects, e.g. gravity
    • B03C3/15—Centrifugal forces
    • 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
    • B04C3/00—Apparatus in which the axial direction of the vortex flow following a screw-thread type line remains unchanged ; Devices in which one of the two discharge ducts returns centrally through the vortex chamber, a reverse-flow vortex being prevented by bulkheads in the central discharge duct
    • B04C3/06—Construction of inlets or outlets to 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
    • B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
    • B04C2009/001—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks with means for electrostatic separation

Definitions

  • the present invention relates to centrifugal separators of the cyclone type intended to extract from a liquid or gaseous fluid the solid or liquid particles which it holds in suspension. It relates more particularly to the case of devices of the type in question with a substantially horizontal axis in which the fluid to be treated flows longitudinally by entering at one end to exit by the other.
  • These cyclones generally comprise an inlet vane suitable for putting the fluid in rapid rotation, an annular outlet for a separate product and a central outlet for purified fluid produced in the form of a simple axial tube of diameter slightly smaller than that of the body. of the device.
  • Cyclones thus established have the disadvantage of consuming a lot of energy and consequently requiring the presence of relatively high power pumps or fans.
  • the rotation carried out by the inlet vane is imperfect so that there is formed inside the apparatus of irregular vortices which often extend to the outlet thereby hampering the regular rotation of the fluid mass and lowering the efficiency of separation.
  • these irregularities in rotation cause significant wear of the walls and which becomes absolutely inadmissible as soon as one seeks to increase the tangential speed to increase the separating effect.
  • the invention aims to remedy the above drawbacks and to establish a cyclone of the kind in question which has a high separation efficiency and which requires for its operation only a relatively reduced power.
  • the invention also aims to increase this efficiency by combining the intense centrifugal field produced inside the cyclone with an electrostatic field maintained by an ionizing or polarizing axial electrode.
  • the apparatus according to the invention of the type comprising a cyclone in which the fluid to be treated rotates while moving axially, and which is provided, for the rotation of the fluid, with an inlet device constituted by vanes carried by a central core, is characterized in that these blades have a transverse profile (perpendicular to the axis of the core) a conformation such that the spaces which separate them are in the form of a trapezoid with non-parallel sides curved so that their convexity is oriented towards the outside of the blade in question, with a view to ensuring the irrotational regime at the same time as a uniform longitudinal velocity component for all the annular layers of the fluid inside the body of the cyclone.
  • an axial electrode to which the profiled body of the second stage is made to straighten means (this body being of course provided insulating) and it is engaged in another body.
  • insulator arranged along the axis of the means of rotation associated with the inlet of the cyclone, the supply of current to this electrode being effected by its end located downstream of the outlet of this cyclone.
  • the cyclone with horizontal axis shown in fig. 1 comprises as usual a cylindrical body 1 that the liquid or gaseous fluid to be treated passes longitudinally from end to end, namely from left to right in the drawing, as indicated by the arrows 2 and 3.
  • a device 4 for rotating this fluid around the geometric axis of the body 1 At the entrance is a device 4 for rotating this fluid around the geometric axis of the body 1, while at the outlet another device 5 straightens the flow by recovering the kinetic energy which corresponds to the tangential speed of rotation at l inside the body.
  • the input device 4 is established so that the fluid rotates in the body 1 according to the so-called irrotational regime according to which the tangential speed is inversely proportional to the radius, and also so that the longitudinal speed component of the various annular layers in rotation is the same.
  • the device 4 comprises in known manner a central core 6, suitably profiled and profiled vanes 7 mounted on it. But these blades have a notable thickness so as to allow profiling the intermediate spaces. 8 which they define.
  • said spaces must have a profile in the general shape of a trapezoid with non-parallel sides, preferably curved so that their convexity is oriented towards the outside. compared to dawn.
  • the vanes 7 become thinner upstream and downstream so as to have a rounded edge at the front and a substantially sharp edge at the rear, in the manner known by example for airplane wings. It will also be understood that in order to put the fluid in rotation, said blades are helical in the longitudinal direction.
  • the output device 5 comprises three successive stages 9, 10 and 11.
  • the upstream stage 9 is convergent.
  • the intermediate stage 10 is equipped with a profiled central core 12 and profiled straightening vanes 13.
  • This intermediate stage can be cylindrical, but it is preferably provided with a slight convergence.
  • the assembly 9-10-11 represents a Venturi in the neck of which the straightening vanes 13 would have been placed.
  • profiled like the inlet core 6, but of greater length can be extended upstream over a fraction of the length of stage 9 and backwards to the outlet of stage 11.
  • the cyclone shown also comprises an axial electrode 14 supported by the cores 6 and 12 provided with insulating material at least in their central part.
  • the upstream end of this electrode remains inside the core 6, but its downstream end on the contrary exceeds beyond the outlet of the stage 11 to be connected to the high voltage current supply generator.
  • the cyclone has a tangential peripheral outlet 15 of separate divided product oriented in the direction of rotation of the fluid inside the device.
  • This outlet which can be equipped with a valve, a lock or other known device, not shown, is located immediately in front of the upstream stage 9 of the outlet device 5. It will moreover be noted that it is possible in the known manner to have several cyclones in parallel inside the same box, in which case their outputs open directly into the space thereof.
  • the fluid When the device is operating, thanks to the input device 4, the fluid is immediately put into an irrotational regime on a regular basis and since the longitudinal speed components of all the layers are the same, its rotation continues regularly over the entire length of the body without any formation of vortices corresponding to energy losses.
  • the longitudinal speed component rises sharply at the same time as therefore the pitch of the propeller traversed by the various threads increases to the same extent, which corresponds to the start of speed transformation. tangential in longitudinal linear speed.
  • This transformation ends in stage 10 thanks to the presence of vanes 13 which straighten the flow without significant energy loss.
  • the divergent 11 performs the recovery of kinetic energy, that is to say the transformation of dynamic pressure into static pressure.
  • the fluid is found at the outlet at a static pressure very little lower than that of the inlet.
  • the supply of current to the axial electrode 14 can be carried out by the downstream end of the latter, that is to say in an area where the fluid is already purified and where consequently the particles which it contained in suspension at the origin can not cause neither leaks of current by way, nor the initiation of short-circuits.
  • the upstream tip of the central core 12 of the output device 5 can be located more or less in front, or even back, of the converging stage 9, the straightening vanes 13 themselves being able to extend more or less on the upstream part of this core, possibly up to the tip of the latter.
  • these can be both liquid and solid (for example, gases charged with fine liquid droplets).

Landscapes

  • Cyclones (AREA)
EP80420122A 1979-11-08 1980-11-07 Perfectionnements aux séparateurs centrifuges du genre cyclone Expired EP0028996B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7928023 1979-11-08
FR7928023A FR2469211A1 (fr) 1979-11-08 1979-11-08 Perfectionnements aux separateurs centrifuges du genre cyclone

Publications (2)

Publication Number Publication Date
EP0028996A1 EP0028996A1 (fr) 1981-05-20
EP0028996B1 true EP0028996B1 (fr) 1983-05-11

Family

ID=9231644

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80420122A Expired EP0028996B1 (fr) 1979-11-08 1980-11-07 Perfectionnements aux séparateurs centrifuges du genre cyclone

Country Status (10)

Country Link
US (1) US4390426A (cg-RX-API-DMAC7.html)
EP (1) EP0028996B1 (cg-RX-API-DMAC7.html)
JP (1) JPS57113858A (cg-RX-API-DMAC7.html)
AU (1) AU535526B2 (cg-RX-API-DMAC7.html)
BR (1) BR8007168A (cg-RX-API-DMAC7.html)
CA (1) CA1139243A (cg-RX-API-DMAC7.html)
DE (2) DE28996T1 (cg-RX-API-DMAC7.html)
FR (1) FR2469211A1 (cg-RX-API-DMAC7.html)
IN (1) IN153607B (cg-RX-API-DMAC7.html)
ZA (1) ZA806808B (cg-RX-API-DMAC7.html)

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Publication number Priority date Publication date Assignee Title
GB9123883D0 (en) * 1991-11-11 1992-01-02 Bhr Group Ltd Hydrocyclone
FR2702671B1 (fr) * 1993-03-15 1995-05-05 Inst Francais Du Petrole Dispositif et procédé de séparation de phases de densités et de conductivités différentes par électrocoalescence et centrifugation.
US5972215A (en) * 1997-09-03 1999-10-26 Kammel; Refaat A. Continuous particle separation and removal cleaning system
PL343603A1 (en) * 1998-03-26 2001-08-27 Waveplane Internat As Method and pump for impelling water in waters
US6129775A (en) * 1998-08-19 2000-10-10 G.B.D. Corp. Terminal insert for a cyclone separator
US6312594B1 (en) 1998-08-19 2001-11-06 G.B.D. Corp. Insert for a cyclone separator
US6277278B1 (en) 1998-08-19 2001-08-21 G.B.D. Corp. Cyclone separator having a variable longitudinal profile
US6168716B1 (en) 1998-08-19 2001-01-02 G.B.D. Corp. Cyclone separator having a variable transverse profile
WO2000033936A1 (en) * 1998-12-07 2000-06-15 Pritchard Alden D Method and apparatus for the separation of solids, liquids and gases and for by-product concentration and dehydration
US6782585B1 (en) * 1999-01-08 2004-08-31 Fantom Technologies Inc. Upright vacuum cleaner with cyclonic air flow
US6334234B1 (en) * 1999-01-08 2002-01-01 Fantom Technologies Inc. Cleaner head for a vacuum cleaner
US6238451B1 (en) * 1999-01-08 2001-05-29 Fantom Technologies Inc. Vacuum cleaner
US6141826A (en) * 1999-01-08 2000-11-07 G.B.D. Corp. Center air feed for cyclonic separator
US6582500B1 (en) * 2000-08-15 2003-06-24 University Of Maryland Electrohydrodynamic liquid-vapor separator
SE519290C2 (sv) * 2001-07-16 2003-02-11 Ragne Svadil Luftrenare
CN100415381C (zh) * 2002-07-19 2008-09-03 国际壳牌研究有限公司 涡流管分离器、多级分离器以及分离固体和气体以获得气态流的方法
US6921424B2 (en) * 2002-08-06 2005-07-26 Visteon Global Technologies, Inc. Dust pre-separator for an automobile engine
JP2004069166A (ja) * 2002-08-06 2004-03-04 Daikin Ind Ltd 二相冷媒流用整流装置及び冷凍装置
TWI220654B (en) * 2003-07-02 2004-09-01 Ind Tech Res Inst Adjustable whirlpool electrostatic filter
DE10340122A1 (de) * 2003-08-30 2004-02-26 Mann + Hummel Gmbh Vorrichtung zur Trennung von Partikeln aus einem Mediumstrom
US7377954B2 (en) * 2005-01-27 2008-05-27 Fleetguard, Inc. Performance air filtration cartridge
KR100662635B1 (ko) * 2005-06-14 2007-01-02 삼성광주전자 주식회사 진공청소기의 사이클론 집진장치
KR100662646B1 (ko) * 2006-01-11 2007-01-02 삼성광주전자 주식회사 방전극을 구비한 사이클론 집진장치
US20070180996A1 (en) * 2006-02-09 2007-08-09 Oreck Holdings, Llc Tower air cleaner with improved airflow
EP2078153B1 (en) * 2006-10-24 2019-05-15 Davies, David Induction and fuel delivery system for piston engine
WO2009076774A1 (en) 2007-12-19 2009-06-25 Gbd Corp. Configuration of a cyclone assembly and surface cleaning apparatus having same
US7964021B2 (en) * 2008-05-16 2011-06-21 General Electric Company Systems and methods for inducing swirl in particles
KR20130110690A (ko) * 2012-03-30 2013-10-10 손동원 축류식 싸이클론 집진장치
US20130276769A1 (en) * 2012-04-20 2013-10-24 Massachusetts Institute Of Technology Energy-Harvesting Reactor Based on Diffusion of Aluminum in Gallium
KR101578785B1 (ko) * 2014-05-16 2015-12-18 손동원 축류형 집진기 및 축류형 집진기용 전처리집진장치
NL2023332B1 (en) * 2019-06-17 2021-01-25 Mst Nl B V Filter device for removing particles from a fluid
WO2021241063A1 (ja) * 2020-05-28 2021-12-02 パナソニックＩｐマネジメント株式会社 分離装置及び分離システム

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US2201301A (en) * 1937-03-30 1940-05-21 Western Precipitation Corp Centrifugal separating device
US2322414A (en) * 1941-04-19 1943-06-22 Bowen William Spencer Venturi dust collector
US2393112A (en) * 1943-01-01 1946-01-15 B F Sturtevant Co Dust collector system
GB680297A (en) 1949-12-21 1952-10-01 Colliery Engineering Ltd Improvements relating to cyclones for separating solid materials of different specific gravity
BE502624A (cg-RX-API-DMAC7.html) * 1950-04-22
US2667942A (en) * 1951-11-07 1954-02-02 Research Corp Electrified, centrifugal gas cleaning device
FR1069071A (fr) * 1952-10-27 1954-07-05 Airmeca Perfectionnements aux capteurs de particules contenues dans des fluides
US3478494A (en) * 1968-06-26 1969-11-18 Gen Electric Vortex-electrostatic separator
US3670479A (en) * 1970-12-14 1972-06-20 Gen Electric Momentum slot centrifugal type separator
US4010011A (en) * 1975-04-30 1977-03-01 The United States Of America As Represented By The Secretary Of The Army Electro-inertial air cleaner
US4008059A (en) * 1975-05-06 1977-02-15 The United States Of America As Represented By The Secretary Of The Army Centrifugal separator
FR2338086A1 (fr) * 1976-01-16 1977-08-12 Air Ind Appareil separateur a mouvement cyclonaire
US4127396A (en) * 1977-07-28 1978-11-28 Halle Industries, Inc. Air pre-cleaner

Also Published As

Publication number Publication date
FR2469211B1 (cg-RX-API-DMAC7.html) 1983-07-29
BR8007168A (pt) 1981-05-12
FR2469211A1 (fr) 1981-05-22
JPH0230300B2 (cg-RX-API-DMAC7.html) 1990-07-05
EP0028996A1 (fr) 1981-05-20
US4390426A (en) 1983-06-28
DE3063179D1 (en) 1983-06-16
AU6419280A (en) 1981-05-14
DE28996T1 (de) 1983-04-14
CA1139243A (en) 1983-01-11
JPS57113858A (en) 1982-07-15
ZA806808B (en) 1981-10-28
IN153607B (cg-RX-API-DMAC7.html) 1984-07-28
AU535526B2 (en) 1984-03-29

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