WO2002018056A2 - Buse d'entree de cyclone - Google Patents

Buse d'entree de cyclone Download PDF

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Publication number
WO2002018056A2
WO2002018056A2 PCT/US2001/027294 US0127294W WO0218056A2 WO 2002018056 A2 WO2002018056 A2 WO 2002018056A2 US 0127294 W US0127294 W US 0127294W WO 0218056 A2 WO0218056 A2 WO 0218056A2
Authority
WO
WIPO (PCT)
Prior art keywords
cyclone
entry port
entrance nozzle
nozzle
expansion spool
Prior art date
Application number
PCT/US2001/027294
Other languages
English (en)
Other versions
WO2002018056A3 (fr
Inventor
Rong-Her Jean
Original Assignee
Shell Internationale Research Maatschappij B.V.
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 Shell Internationale Research Maatschappij B.V. filed Critical Shell Internationale Research Maatschappij B.V.
Priority to AU2001287020A priority Critical patent/AU2001287020A1/en
Publication of WO2002018056A2 publication Critical patent/WO2002018056A2/fr
Publication of WO2002018056A3 publication Critical patent/WO2002018056A3/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/02—Construction of inlets by which the vortex flow is generated, e.g. tangential admission, the fluid flow being forced to follow a downward path by spirally wound bulkheads, or with slightly downwardly-directed tangential admission
    • B04C5/04—Tangential inlets

Definitions

  • the present invention relates to cyclone separators. More particularly, the present invention relates to a cyclone entrance nozzle for a cyclone that separates solid particles from a gas stream.
  • Cyclone separators for solids and fluids separation are well known.
  • the inlet gas source is connected to a horizontal inlet nozzle located on the cyclone. Consequently, the inlet gas source also has a horizontal section to match the inlet nozzle of the cyclone separator.
  • Solid particles frequently build up in the horizontal section of the pipes or ducts where the inlet gas source connects to the inlet gas nozzle of the cyclone. This build up of solid particles or solids agglomeration can greatly restrict the flow of the inlet gas, which significantly increases the pressure drop of the system.
  • the extent of the solids build up may be so great that the inlet gas to the cyclone separator becomes plugged, and the operation must be shut down to remove the plug of solid particles.
  • particle bouncing and erosion can occur due to the high rate of speed at which the inlet gas enters the cyclone separator via the inlet nozzle.
  • a cyclone separator is described in U.S. Pat. No. 4,662,909 wherein the inlet gas nozzle is angled between 30 to 70 degrees relative to the horizontal to reduce accumulation of particles.
  • the increased angle of the inlet gas nozzle relative to the horizontal increases particle bouncing which significantly reduces the solids separation efficiency of the cyclone.
  • the high velocity of the inlet gas through the angled inlet gas nozzle causes erosion of the inner wall of the cyclone separator.
  • a cyclone entrance nozzle which eliminates solids build up and plugging of the solid particles comprising the inlet gas.
  • a cyclone entrance nozzle which reduces erosion of the inner walls, but which does not increase the overall pressure drop of the system or reduce the separation efficiency of the cyclone.
  • a cyclone separator which connects to a gas inlet source such as a pipe or duct and has an entrance nozzle configured to reduce particle accumulation and erosion.
  • the entrance nozzle has an expansion spool that increases the cross-sectional area of the entrance nozzle from the inlet gas source to an entry port having a quadrilateral cross-section.
  • the expansion spool reduces the velocity of the inlet gas near the entry port to reduce erosion.
  • the entry port is angled to assist in providing spiral flow in the cyclone at the reduced velocity.
  • the expansion spool also functions to provide transition from circular pipes or ducts to the quadrilateral cross section of the entry port as needed.
  • the entrance nozzle promotes entry of the inlet gas in a helical spiral that continues into the cyclone.
  • the expansion spool has a smooth inner surface that increases the cross sectional area of the entrance nozzle by more than 50%, and the entry port has a ratio of length to width from 1:1 to less than 2:1. In another aspect, both the expansion spool and the entry port are upwardly angled from about 5 degrees to about 20 degrees from the horizontal.
  • Figure 1 is a side view of a cyclone separator having a cyclone entrance nozzle in accordance with the present invention.
  • Figure 2 is a perspective view of the modified cyclone entrance nozzle of Figure 1.
  • the present invention has surprisingly found a cyclone separator entrance nozzle that expands the cross-sectional area large enough to reduce the inlet gas velocity without compromising the separation efficiency of the cyclone.
  • the reduced inlet gas velocity reduces the pressure drop through the entrance nozzle, significantly decreases erosion around the cyclone separator inlet region, and significantly reduces particle bouncing.
  • the entrance nozzle provides an expansion spool, which connects the inlet gas source to an entry port having a quadrilateral cross-section to reduce particle erosion and reduce particle accumulation without impairing separation efficiency.
  • the expansion spool preferably increases the cross sectional area of the entrance nozzle by at least 50%, and the entry port is preferably angled about 5 degrees to about 20 degrees from horizontal.
  • a cyclone 10 having an entrance nozzle 12 that transitions from a circular gas inlet pipe (not shown) to a quadrilateral entry port 14 is shown in Figure 1.
  • the entrance nozzle 12 is tangentially disposed about an outer surface of an exit pipe 16 of the cyclone 10 as shown more clearly in Figure 2, and is connected to an internal helical spiral 18 disposed within the cyclone 10.
  • the entrance nozzle 12 is preferably disposed about the exit pipe 16 at an angle inclined from the horizontal and is shown in Figure 1 as disposed about 10 degrees from the horizontal. The angle promotes spiral flow in the helical spiral 18 which spiral flow continues into the lower portion 20 of the cyclone 10. Solid particles are removed through a lower flange 22 and the gas is removed through the exit pipe
  • the entrance nozzle 12 has a cross section that is preferably quadrilateral in shape.
  • the cross section of the entrance nozzle 12 may be, for example, square or rectangular.
  • the cross section of the entrance nozzle 12 has a length to width ratio from 1 : 1 to less than 2:1, most preferably about 1.3 to 1.
  • the transition from the gas inlet pipe to the entry port 14 occurs in an expansion spool 26 that increases the cross sectional area of the inlet nozzle 12 from an entry flange 28 to the entry port 14.
  • the cross sectional area within the entry flange 28 is circular to match the gas inlet pipe, but can match the cross sectional area of other pipes and ducts.
  • the expansion spool 26 preferably increases the cross sectional area more than 100% near the entrance to the entry port 14, most preferably about a 200%) increase.
  • a process stream comprising solid particles and a process gas flows through the entry flange 28, through the expansion spool 26, and then through the entry port 14 before reaching the helical spiral 18 inside the cyclone
  • the expansion spool 26 reduces erosion without substantially altering the gas flow through the cyclone.10. Build up of particles that may occur in the entry port 14 is adequately controlled by the angle of incline, also without substantially altering the flow of gases through the cyclone 10. The reduction of the gas feed velocity significantly reduces particle bouncing as well as the erosion of interior walls.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Cyclones (AREA)

Abstract

L'invention concerne un séparateur cyclone servant à supprimer les particules solides. Ce séparateur cyclone comporte une buse d'entrée, pourvue d'un raccord d'expansion et d'un orifice d'entrée, qui réduit l'érosion de la paroi intérieure et l'accumulation des particules. Le raccord d'expansion augmente l'aire de la section transversale de la buse d'entrée d'au moins 50 % autour de l'orifice d'entrée. L'orifice d'entrée est incliné à l'horizontale pour résister à l'accumulation des particules. L'entrée de la buse réduit la chute de pression dans la buse, réduit considérablement l'érosion autour de l'entrée du cyclone, et réduit considérablement le rebond et l'accumulation des particules sans en altérer la séparation.
PCT/US2001/027294 2000-09-01 2001-08-30 Buse d'entree de cyclone WO2002018056A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001287020A AU2001287020A1 (en) 2000-09-01 2001-08-30 Cyclone entrance nozzle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US23016400P 2000-09-01 2000-09-01
US60/230,164 2000-09-01

Publications (2)

Publication Number Publication Date
WO2002018056A2 true WO2002018056A2 (fr) 2002-03-07
WO2002018056A3 WO2002018056A3 (fr) 2002-06-13

Family

ID=22864178

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/027294 WO2002018056A2 (fr) 2000-09-01 2001-08-30 Buse d'entree de cyclone

Country Status (2)

Country Link
AU (1) AU2001287020A1 (fr)
WO (1) WO2002018056A2 (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007000242A1 (fr) * 2005-06-29 2007-01-04 Danieli Corus Technical Services Bv Separateur cylone pour gaz de haut-fourneau
GB2456192A (en) * 2008-01-02 2009-07-08 Samsung Kwangju Electronics Co Sloped upper wall of cyclone inflow channel
WO2010081715A1 (fr) * 2009-01-15 2010-07-22 Donaldson Filtration Deutschland Gmbh Séparateur à cyclone à tube de guidage d'écoulement d'admission
WO2012076701A1 (fr) * 2010-12-10 2012-06-14 Firmus S.A.M. Dispositif de séparation cyclonique comprenant une partie enroulée supérieure et une partie conique inférieure
US8343360B2 (en) 2007-01-11 2013-01-01 Advanced Tail-End Oil Company N.V. Device and method for separating a flowing medium mixture with a stationary cyclone
US8663472B1 (en) 2011-05-06 2014-03-04 Dow Global Technologies Llc Multi-chambered hydroclone
US8701896B2 (en) 2005-08-18 2014-04-22 Dow Global Technologies Llc Hydroclone based fluid filtration system
US8882999B2 (en) 2010-06-17 2014-11-11 Dow Global Technologies Llc Cleaning assembly for use in fluid filtration systems
US8960450B2 (en) 2010-12-08 2015-02-24 Dow Global Technologies Llc Apparatus and method for implementing hydroclone based fluid filtration systems with extensible isolated filter stages
CN104525392A (zh) * 2014-12-10 2015-04-22 华北电力大学 带渐扩型入口、导流板和防尘网的旋风分离器和实验系统
US9050610B2 (en) 2012-05-17 2015-06-09 Dow Global Technologies Llc Hydroclone with inlet flow shield
US9101859B2 (en) 2012-06-01 2015-08-11 Dow Global Technologies Llc Cross-flow filtration system including particulate settling zone
US9186604B1 (en) 2012-05-31 2015-11-17 Dow Global Technologies Llc Hydroclone with vortex flow barrier
US9192946B2 (en) 2012-10-26 2015-11-24 Dow Global Technologies Llc Hydroclone
WO2016144231A1 (fr) * 2015-03-12 2016-09-15 Valmet Ab Agencement de séparateur à cyclone et procédé
US9527091B2 (en) 2013-12-05 2016-12-27 Dow Global Technologies Llc Hydroclone with improved cleaning assembly
US10207205B2 (en) 2014-12-18 2019-02-19 Dow Global Technologies Llc Cylindrical filter screen with tensioning mechanism
WO2023167876A1 (fr) * 2022-03-01 2023-09-07 Saudi Arabian Oil Company Appareil et procédé de séparation et de conditionnement d'écoulement polyphasique

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2259919A (en) * 1939-01-23 1941-10-21 Northern Blower Company Dust collector
US3738090A (en) * 1970-09-29 1973-06-12 R Kilian Particle separation system
EP0475252A1 (fr) * 1990-09-13 1992-03-18 Mitsubishi Jukogyo Kabushiki Kaisha Séparateur gaz-liquide

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2259919A (en) * 1939-01-23 1941-10-21 Northern Blower Company Dust collector
US3738090A (en) * 1970-09-29 1973-06-12 R Kilian Particle separation system
EP0475252A1 (fr) * 1990-09-13 1992-03-18 Mitsubishi Jukogyo Kabushiki Kaisha Séparateur gaz-liquide

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007000242A1 (fr) * 2005-06-29 2007-01-04 Danieli Corus Technical Services Bv Separateur cylone pour gaz de haut-fourneau
US8202338B2 (en) 2005-06-29 2012-06-19 Alex Lajtonyi Cyclone separator for blast furnace gas
US8701896B2 (en) 2005-08-18 2014-04-22 Dow Global Technologies Llc Hydroclone based fluid filtration system
US8343360B2 (en) 2007-01-11 2013-01-01 Advanced Tail-End Oil Company N.V. Device and method for separating a flowing medium mixture with a stationary cyclone
GB2456192A (en) * 2008-01-02 2009-07-08 Samsung Kwangju Electronics Co Sloped upper wall of cyclone inflow channel
GB2456192B (en) * 2008-01-02 2010-03-03 Samsung Kwangju Electronics Co Dust-separating apparatus
US7854779B2 (en) 2008-01-02 2010-12-21 Samsung Gwangju Electronics Co., Ltd. Dust separating apparatus for vacuum cleaner
WO2010081715A1 (fr) * 2009-01-15 2010-07-22 Donaldson Filtration Deutschland Gmbh Séparateur à cyclone à tube de guidage d'écoulement d'admission
US8882999B2 (en) 2010-06-17 2014-11-11 Dow Global Technologies Llc Cleaning assembly for use in fluid filtration systems
US8960450B2 (en) 2010-12-08 2015-02-24 Dow Global Technologies Llc Apparatus and method for implementing hydroclone based fluid filtration systems with extensible isolated filter stages
WO2012076701A1 (fr) * 2010-12-10 2012-06-14 Firmus S.A.M. Dispositif de séparation cyclonique comprenant une partie enroulée supérieure et une partie conique inférieure
FR2968579A1 (fr) * 2010-12-10 2012-06-15 Firmus S A M Dispositif de separation d'un melange contenant une solution liquide et des microparticules solides, de fonctionnement economique.
US8663472B1 (en) 2011-05-06 2014-03-04 Dow Global Technologies Llc Multi-chambered hydroclone
US9050610B2 (en) 2012-05-17 2015-06-09 Dow Global Technologies Llc Hydroclone with inlet flow shield
US9186604B1 (en) 2012-05-31 2015-11-17 Dow Global Technologies Llc Hydroclone with vortex flow barrier
US9101859B2 (en) 2012-06-01 2015-08-11 Dow Global Technologies Llc Cross-flow filtration system including particulate settling zone
US9192946B2 (en) 2012-10-26 2015-11-24 Dow Global Technologies Llc Hydroclone
US9527091B2 (en) 2013-12-05 2016-12-27 Dow Global Technologies Llc Hydroclone with improved cleaning assembly
CN104525392A (zh) * 2014-12-10 2015-04-22 华北电力大学 带渐扩型入口、导流板和防尘网的旋风分离器和实验系统
US10207205B2 (en) 2014-12-18 2019-02-19 Dow Global Technologies Llc Cylindrical filter screen with tensioning mechanism
WO2016144231A1 (fr) * 2015-03-12 2016-09-15 Valmet Ab Agencement de séparateur à cyclone et procédé
WO2023167876A1 (fr) * 2022-03-01 2023-09-07 Saudi Arabian Oil Company Appareil et procédé de séparation et de conditionnement d'écoulement polyphasique
US11850605B2 (en) 2022-03-01 2023-12-26 Saudi Arabian Oil Company Apparatus and method to separate and condition multiphase flow

Also Published As

Publication number Publication date
AU2001287020A1 (en) 2002-03-13
WO2002018056A3 (fr) 2002-06-13

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