EP0210910A2 - Zyklonabscheider mit axialer Strömung - Google Patents

Zyklonabscheider mit axialer Strömung Download PDF

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Publication number
EP0210910A2
EP0210910A2 EP86401541A EP86401541A EP0210910A2 EP 0210910 A2 EP0210910 A2 EP 0210910A2 EP 86401541 A EP86401541 A EP 86401541A EP 86401541 A EP86401541 A EP 86401541A EP 0210910 A2 EP0210910 A2 EP 0210910A2
Authority
EP
European Patent Office
Prior art keywords
tubular body
downstream
upstream
core
converging
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.)
Withdrawn
Application number
EP86401541A
Other languages
English (en)
French (fr)
Other versions
EP0210910A3 (de
Inventor
Jean Merle
Albert Rebours
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.)
AIR INDUSTRIE ENVIRONNEMENT
Original Assignee
AIR INDUSTRIE ENVIRONNEMENT
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 AIR INDUSTRIE ENVIRONNEMENT filed Critical AIR INDUSTRIE ENVIRONNEMENT
Publication of EP0210910A2 publication Critical patent/EP0210910A2/de
Publication of EP0210910A3 publication Critical patent/EP0210910A3/de
Withdrawn legal-status Critical Current

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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
    • 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

Definitions

  • the subject of the invention is a cyclonal axial flow device intended for the separation of solid or liquid particles suspended in a fluid and constituted by a tubular body comprising a converging upstream portion, a diverging downstream portion and an intermediate portion comprising openings for the evacuation of the separated particles, a core disposed in the axis of said tubular body and extending over the entire length of the tubular body, a vane for rotating the fluid to be purified placed at the inlet end of the tubular body , in the passage formed between the latter and the core, and straightening vanes arranged in said passage between the upstream end of said diverging portion and the outlet end of the tubular body.
  • Devices of this type are generally very effective in separating particles whose size is equal to or greater than 10 microns. On the other hand, for particles of smaller dimensions their separation efficiency is lower.
  • the object of the present invention is to improve the separation efficiency of these devices, in particular for particles whose dimensions are between 5 and 10 microns.
  • the cyclone separation device object of the invention is characterized in that the section of the passage formed between the tubular body and the core has a progressively decreasing section, from upstream to downstream, in the converging portion of the tubular body, and a progressively increasing section, from upstream to downstream, between the upstream end of the divergent portion and the outlet end of the tubular body.
  • the straightening vanes can be placed either at the downstream end of the divergent portion of the tubular body, or between its ends.
  • the tubular body will comprise a cylindrical portion downstream of the straightening vanes and the core will comprise in this portion of the tubular body a portion whose section decreases progressively from upstream to downstream.
  • the part of the core located downstream of the straightening vanes will be cylindrical.
  • the openings for the evacuation of the separated particles may be formed by longitudinal slots cut in the downstream part of the converging portion of the tubular body, or in a cylindrical portion comprised between the converging and diverging portions.
  • the rotation vane for the fluid to be treated may be placed in the converging portion of the tubular body, near its upstream end, or in a cylindrical portion of the tubular body provided upstream of the converging portion.
  • the part of the nucleus extending along the converging portion tubular body may be cylindrical or have a decreasing cross section from upstream to downstream.
  • the arrangements according to the invention make it possible to increase the separation efficiency by reducing the thickness of the peripheral boundary layer at the level of the dust evacuation slots and by regulating the profile of the speeds in the fluid stream, which has the effect to promote the migration of particles towards the periphery of the tubular body. They also make it possible to create a form favorable to the collection of dust when several devices of the type described are grouped in a box.
  • the invention also makes it possible to reduce the speed of the fluid at the level of the rotation vane and, consequently, its wear.
  • the acceleration of rotation in the convergent also considerably improves the separation of dust while maintaining a moderate level of turbulence thanks to the central core which suppresses axial detachments and return currents.
  • Figures 1 to 4 of this drawing are views, partially in elevation and partially in section, of four cyclone separation with axial flow produced in accordance with the invention.
  • These devices consist of a tubular body of revolution 10 inside which is placed an elongated core 12, of circular section, which extends over the entire length of the body 10 and whose axis coincides with that of the latter.
  • the front end of the core 12 is profiled.
  • Rotation vanes 14 are provided at the upstream end of the device through which between the fluid to be purified and rectifying vanes 16 are arranged in its downstream part; these blades also serve to support and center the core in the tubular body of the device.
  • the body of the apparatus successively comprises, moving in the direction of flow of the fluid indicated by the arrows, an upstream, frustoconical and convergent portion 10a, an intermediate cylindrical portion 10b and a downstream, frustoconical and divergent portion 10c.
  • the part 12a of the core between the rotation blades 14 and the connection plane of the portions 10b and 10c has a cylindrical shape
  • the part 12b between this plane and the straightening blades 16 has a frustoconical shape, its section increasing regularly from upstream to downstream
  • the part 10c located downstream of the blades 16 also has a cylindrical shape.
  • Slots longitudinal 18 are cut in the portion 10b of the tubular body 10 for the evacuation of the particles separated from the fluid.
  • the portion 10b has been eliminated and replaced by an extension of the frustoconical portion 10a in which the slots are formed 18.
  • the shapes of the portion 10c and of the core 12 are the same as in the device of figure 1.
  • the tubular body successively comprises, from upstream to downstream, a cylindrical portion 10d, a converging frustoconical portion 10a, a diverging frustoconical portion 10c and a cylindrical portion 10e.
  • the rotation vanes 14 are located in the portion 10d, the straightening vanes 16 are located at the connection of the portions 10c and 10e and the slots 18 are formed in the downstream part of the portion 10a.
  • the core 12 has a cylindrical shape between the blades 14 and the connection plane of the portions 10a and 10c (part 12a), a frustoconical shape, with increasing section, in the portion 10c (part 12b) and a frustoconical shape, with decreasing section , in the 10th portion (part 12c ').
  • the body of the device successively comprises a short portion cylindrical 10d, a converging frustoconical portion 10a, a cylindrical portion 10b, a diverging frustoconical portion 10c and a cylindrical portion 10e.
  • the blades 14 are arranged in the portion 10d, immediately upstream of the connection plane of the portions 10a and 10d, the blades 16 are placed in the cylindrical portion 10e, immediately downstream of the connection plane of the portions 10c and 10e and the slots 18 are provided in the downstream part of the cylindrical portion 10b.
  • the part 12a 'of the core between the vanes 14 and the connection plane of the portions 10a and 10b of the body of the apparatus has a frustoconical shape, with decreasing section
  • the part 12a "located in the portion 10b has a cylindrical shape
  • the part 12b located in the portion 10c has a frustoconical shape, with increasing section
  • the part 12c 'situated downstream of the straightening vanes 16 has a frustoconical shape, with decreasing section.
  • This device will be used in the case of difficult separations because it allows, thanks to the narrowing of the core in the portions 10a and 10b, to obtain a greater centrifugal acceleration for the same radial size of the device.
  • the section of the passage formed between the tubular body and the core, in the converging portion 10a has a progressively decreasing section, from upstream to downstream, so as to accelerate the rotation of the fluid and improve the separation dust.
  • the section of the passage formed between the tubular body and the core has a progressively increasing section from upstream to downstream, which allows maximum recovery of the kinetic energy of the fluid and, therefore, a significant reduction in pressure drop.
  • the angle at the top of the frustoconical part 12b of the core can be equal to or greater than that of the portion 10c of the tubular body, but in all cases the cross section of the passage formed between them increases from upstream to downstream.

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  • Cyclones (AREA)
EP86401541A 1985-07-26 1986-07-10 Zyklonabscheider mit axialer Strömung Withdrawn EP0210910A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8511445 1985-07-26
FR8511445A FR2585266B1 (fr) 1985-07-26 1985-07-26 Appareil de separation cyclonaire a ecoulement axial

Publications (2)

Publication Number Publication Date
EP0210910A2 true EP0210910A2 (de) 1987-02-04
EP0210910A3 EP0210910A3 (de) 1988-04-13

Family

ID=9321671

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86401541A Withdrawn EP0210910A3 (de) 1985-07-26 1986-07-10 Zyklonabscheider mit axialer Strömung

Country Status (2)

Country Link
EP (1) EP0210910A3 (de)
FR (1) FR2585266B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1010478C2 (nl) * 1998-11-04 2000-05-08 Cds Engineering B V Inrichting voor het behandelen van een gas/vloeistofmengsel.
WO2003066195A1 (en) * 2002-02-08 2003-08-14 Norsk Hydro Asa Device for the transformation of gas/liquid flow to laminar or stratified flow
EP1512453A1 (de) * 2003-08-30 2005-03-09 Mann+Hummel Gmbh Vorrichtung zur Trennung von Partikeln aus einem Medienstrom
EP1974790A1 (de) * 2007-03-26 2008-10-01 Twister B.V. Zyklonabscheider für Flüssigkeiten
WO2010090510A1 (en) * 2009-02-05 2010-08-12 Twister B.V. Multistage cyclonic fluid separator
NL2028048A (en) * 2020-06-16 2022-01-19 Univ China Petroleum Full-swirl supersonic separation device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2201301A (en) * 1937-03-30 1940-05-21 Western Precipitation Corp Centrifugal separating device
US2370629A (en) * 1943-06-02 1945-03-06 William R Appeldoorn Dust precipitator
US2487633A (en) * 1947-01-29 1949-11-08 Jr Joseph Breslove Separator
GB711304A (en) * 1951-01-12 1954-06-30 Svenska Flaektfabriken Ab Device for separating dust
FR1069071A (fr) * 1952-10-27 1954-07-05 Airmeca Perfectionnements aux capteurs de particules contenues dans des fluides

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000025931A1 (en) * 1998-11-04 2000-05-11 Spark Technologies And Innovations N.V. Device for treating a gas/liquid mixture
US7163626B1 (en) 1998-11-04 2007-01-16 Spark Technologies And Innovations N.V. Device for treating a gas/liquid mixture
NL1010478C2 (nl) * 1998-11-04 2000-05-08 Cds Engineering B V Inrichting voor het behandelen van een gas/vloeistofmengsel.
US7559975B2 (en) 2002-02-08 2009-07-14 Norsk Hydro Asa Process for transforming gas/liquid flow into laminar or stratified flow
WO2003066195A1 (en) * 2002-02-08 2003-08-14 Norsk Hydro Asa Device for the transformation of gas/liquid flow to laminar or stratified flow
CN1308056C (zh) * 2002-02-08 2007-04-04 诺尔斯海德公司 将气/液流转化成层流或片流的装置
AU2003206266B2 (en) * 2002-02-08 2008-07-17 Equinor Energy As Device for the transformation of gas/liquid flow to laminar or stratified flow
EP1512453A1 (de) * 2003-08-30 2005-03-09 Mann+Hummel Gmbh Vorrichtung zur Trennung von Partikeln aus einem Medienstrom
US7258727B2 (en) 2003-08-30 2007-08-21 Mann & Hummel Gmbh Apparatus for separating particles from a flowing medium
EP1974790A1 (de) * 2007-03-26 2008-10-01 Twister B.V. Zyklonabscheider für Flüssigkeiten
WO2008116732A1 (en) * 2007-03-26 2008-10-02 Twister B.V. Cyclonic fluid separator
RU2424038C2 (ru) * 2007-03-26 2011-07-20 Твистер Б.В. Циклонный сепаратор для текучих сред
CN101678257B (zh) * 2007-03-26 2011-08-24 缠绕机公司 旋流分离器
AU2008231954B2 (en) * 2007-03-26 2012-01-19 Twister B.V. Cyclonic fluid separator
US8475555B2 (en) 2007-03-26 2013-07-02 Twister B.V. Cyclonic fluid separator
WO2010090510A1 (en) * 2009-02-05 2010-08-12 Twister B.V. Multistage cyclonic fluid separator
CN102369407B (zh) * 2009-02-05 2015-01-28 缠绕机公司 多级旋流分离器
US9034082B2 (en) 2009-02-05 2015-05-19 Twister B.V. Multistage cyclonic fluid separator
NL2028048A (en) * 2020-06-16 2022-01-19 Univ China Petroleum Full-swirl supersonic separation device

Also Published As

Publication number Publication date
EP0210910A3 (de) 1988-04-13
FR2585266A1 (fr) 1987-01-30
FR2585266B1 (fr) 1990-05-11

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