WO2002005966A3 - Decanter centrifuge having a heavy phase solids baffle - Google Patents

Decanter centrifuge having a heavy phase solids baffle Download PDF

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Publication number
WO2002005966A3
WO2002005966A3 PCT/US2001/022530 US0122530W WO0205966A3 WO 2002005966 A3 WO2002005966 A3 WO 2002005966A3 US 0122530 W US0122530 W US 0122530W WO 0205966 A3 WO0205966 A3 WO 0205966A3
Authority
WO
WIPO (PCT)
Prior art keywords
bowl
heavy phase
conveyor
phase material
decanter centrifuge
Prior art date
Application number
PCT/US2001/022530
Other languages
French (fr)
Other versions
WO2002005966A2 (en
Inventor
John W Caldwell
Original Assignee
Alfa Laval Inc
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 Alfa Laval Inc filed Critical Alfa Laval Inc
Priority to EP01952827A priority Critical patent/EP1303355A2/en
Priority to CA002415615A priority patent/CA2415615A1/en
Priority to JP2002511894A priority patent/JP2004504127A/en
Publication of WO2002005966A2 publication Critical patent/WO2002005966A2/en
Publication of WO2002005966A3 publication Critical patent/WO2002005966A3/en

Links

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
    • B04B1/20—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
    • B04B2001/2041—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 baffles, plates, vanes or discs attached to the conveying screw

Landscapes

  • Centrifugal Separators (AREA)

Abstract

A decanter centrifuge is defined for separating a heavy phase material from a liquid within a feed mixture. The decanter centrifuge includes a bowl (32) rotatable about its longitudinal axis for separation of the heavy phase material from the liquid feed mixture due to centrifugal force. The bowl typically includes a cylindrical portion and a frusto-conical portion at one end. A solids discharge is provided in the restricted end of the frusto-conical bowl portion. A screw conveyor (20) is coaxially mounted for rotation within the bowl, having a spiraled conveyor flight (18) extending radially outwardly to a position adjacent the inside wall of the bowl. The conveyor is adapted to rotate at a relative speed with respect to the bowl for conveying separated heavy phase material toward the heavy phase discharge. A battle (22) in the form of a disc extends radially outwardly from the conveyor hub (16) and is adapted to project into the separated heavy phase material being conveyed along the bowl wall. A shelf (40) is positioned between the disc and a forward or conveying portion of the conveyor flight. The shelf substantially forms an included angle with a radially extending line that is greater than 45 degrees and preferably has an outwardly facing convex surface.
PCT/US2001/022530 2000-07-14 2001-07-13 Decanter centrifuge having a heavy phase solids baffle WO2002005966A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP01952827A EP1303355A2 (en) 2000-07-14 2001-07-13 Decanter centrifuge having a heavy phase solids baffle
CA002415615A CA2415615A1 (en) 2000-07-14 2001-07-13 Decanter centrifuge having a heavy phase solids baffle
JP2002511894A JP2004504127A (en) 2000-07-14 2001-07-13 Decanter-type centrifuge with baffles for heavy phase solids

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/616,443 2000-07-14
US09/616,443 US6572524B1 (en) 2000-07-14 2000-07-14 Decanter centrifuge having a heavy phase solids baffle

Publications (2)

Publication Number Publication Date
WO2002005966A2 WO2002005966A2 (en) 2002-01-24
WO2002005966A3 true WO2002005966A3 (en) 2002-05-23

Family

ID=24469485

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/022530 WO2002005966A2 (en) 2000-07-14 2001-07-13 Decanter centrifuge having a heavy phase solids baffle

Country Status (5)

Country Link
US (1) US6572524B1 (en)
EP (1) EP1303355A2 (en)
JP (1) JP2004504127A (en)
CA (1) CA2415615A1 (en)
WO (1) WO2002005966A2 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
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DE19952804C2 (en) * 1999-11-02 2003-07-03 Westfalia Separator Ind Gmbh Solid bowl screw centrifuge for processing a centrifugal material that tends to foam
DE10212187A1 (en) * 2002-03-20 2003-10-02 Hiller Gmbh screw centrifuge
DK200200598A (en) * 2002-04-22 2003-10-23 Alfa Laval Copenhagen As decanter centrifuge
DE10220757B4 (en) * 2002-05-08 2004-06-24 Westfalia Separator Ag Centrifuge, especially separator
DE10223802B4 (en) * 2002-05-29 2005-06-09 Westfalia Separator Ag Solid bowl centrifuge
SE525413C2 (en) * 2003-06-18 2005-02-15 Alfa Laval Corp Ab A screw conveyor for a decanter centrifuge
DE10336350B4 (en) * 2003-08-08 2007-10-31 Westfalia Separator Ag Solid bowl centrifuge, with paring disc
DE102005027553A1 (en) 2005-06-14 2006-12-28 Westfalia Separator Ag Three-phase solid bowl screw centrifuge and process for controlling the separation process
CA2619883C (en) 2006-05-11 2014-04-15 Westfalia Separator Ag Separator having a liquid outlet including a throttling device
DE102007003928A1 (en) 2007-01-26 2008-08-07 Westfalia Separator Gmbh Solid bowl centrifuge with a baffle plate
US7908764B1 (en) 2008-05-05 2011-03-22 Decanter Machines, Inc. Hyperbaric centrifuge system
US20100096298A1 (en) * 2008-10-22 2010-04-22 De Mayo Benjamin Method and device for extracting liquids from a solid particle material
DE102009001054A1 (en) 2009-02-20 2010-09-02 Hiller Gmbh Solid bowl centrifuge with coarse outlet
US10525389B2 (en) 2012-01-16 2020-01-07 Jk Industries, Llc Sludge concentrator assembly with varying first stage separator, combined with a second stage, clean flow outlet incorporating fixed and variable flow restrictor orifices
US9233866B2 (en) 2012-01-16 2016-01-12 Jk Industries, Llc Sludge concentrator assembly incorporating upper centrifugal separator and lower barrier filter and exhibiting high flow velocity clean fluid outlet combined with low flow velocity solid entrapment

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR384326A (en) * 1907-11-25 1908-04-04 Wilhelm Holzer Centrifugal apparatus
FR1401528A (en) * 1963-05-24 1965-06-04 Bird Machine Co Centrifugal separator
US4142669A (en) * 1968-01-10 1979-03-06 Robatel S.L.P.I. Continuously operating centrifugal separators
JPS5621655A (en) * 1979-07-27 1981-02-28 Ishikawajima Harima Heavy Ind Co Ltd Horizontal type continuous centrifugal separator
US4245777A (en) * 1979-08-30 1981-01-20 Pennwalt Corporation Centrifuge apparatus
US4449967A (en) * 1982-06-17 1984-05-22 Pennwalt Corporation Conveyor flight configuration
DE3723864A1 (en) * 1987-07-18 1989-01-26 Westfalia Separator Ag Solid-bowl worm centrifuge
JPH09201550A (en) * 1996-01-29 1997-08-05 Mitsubishi Kakoki Kaisha Ltd Decanter type centrifugal separator
JPH10151369A (en) * 1996-11-22 1998-06-09 Sumitomo Chem Co Ltd Centrifugal separation of multilayer mixture and screw decanter type centrifugal separator

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Also Published As

Publication number Publication date
JP2004504127A (en) 2004-02-12
WO2002005966A2 (en) 2002-01-24
CA2415615A1 (en) 2002-01-24
EP1303355A2 (en) 2003-04-23
US6572524B1 (en) 2003-06-03

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