CA2247187A1 - Separation method and apparatus - Google Patents

Separation method and apparatus

Info

Publication number
CA2247187A1
CA2247187A1 CA002247187A CA2247187A CA2247187A1 CA 2247187 A1 CA2247187 A1 CA 2247187A1 CA 002247187 A CA002247187 A CA 002247187A CA 2247187 A CA2247187 A CA 2247187A CA 2247187 A1 CA2247187 A1 CA 2247187A1
Authority
CA
Canada
Prior art keywords
rotor
filter
liquid medium
plane
discharging
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
CA002247187A
Other languages
French (fr)
Other versions
CA2247187C (en
Inventor
Vesa Henttonen
Pasi Leimu
Claes Karlsson
Milan Teppler
Jaakko Paatero
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.)
Valmet Technologies Oy
Original Assignee
Raisio Chemicals Oy
Vesa Henttonen
Pasi Leimu
Claes Karlsson
Milan Teppler
Jaakko Paatero
Valmet Flootek Oy
Valmet-Raisio Oy
Metso Paperchem Oy
Metso Paper, 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
Priority claimed from FI960993A external-priority patent/FI106298B/en
Application filed by Raisio Chemicals Oy, Vesa Henttonen, Pasi Leimu, Claes Karlsson, Milan Teppler, Jaakko Paatero, Valmet Flootek Oy, Valmet-Raisio Oy, Metso Paperchem Oy, Metso Paper, Inc. filed Critical Raisio Chemicals Oy
Publication of CA2247187A1 publication Critical patent/CA2247187A1/en
Application granted granted Critical
Publication of CA2247187C publication Critical patent/CA2247187C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Separation Using Semi-Permeable Membranes (AREA)
  • Centrifugal Separators (AREA)

Abstract

The invention concerns a method and a device for separation of separable constituents from a liquid medium. The separation device comprises only one cell or a stack of a plurality of adjacent cells, whereby each cell consists of a plate unit containing a filter (13), an inlet (l6) for supplying the liquid medium into a chamber (10), an outlet (18) for discharging the reject and an outlet (17) for discharging the permeate. The liquid medium is subjected to a strong turbulence created by a conveniently designed rotor, possibly combined with sound waves, preferably ultrasound, and/or an electric field, whereby the deposition of separable constituents on the filter is prevented or essentially reduced. According to the invention a rotor is used in which the essentially plane surface of the rotor wings directed towards the filter comprises one or more areas (20) deviating from the plane of said surface; or the surface (19) of the rotor wings directed towards the filter is curved in such a way that the distance between the surface of the wing and the filter is small at the inner portion of the rotor and that said distance gradually increases towards the periphery of the rotor, or the section of the rotor wings in a plane parallel with the filter forms an almost S-shaped surface, whereby the S-shape is continuous.
CA002247187A 1996-03-04 1997-02-26 Separation method and apparatus Expired - Fee Related CA2247187C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI960993A FI106298B (en) 1996-03-04 1996-03-04 Separation method and device
FI960993 1996-03-04
PCT/FI1997/000129 WO1997032652A1 (en) 1996-03-04 1997-02-26 Separation method and apparatus

Publications (2)

Publication Number Publication Date
CA2247187A1 true CA2247187A1 (en) 1997-09-12
CA2247187C CA2247187C (en) 2005-10-04

Family

ID=35395936

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002247187A Expired - Fee Related CA2247187C (en) 1996-03-04 1997-02-26 Separation method and apparatus

Country Status (1)

Country Link
CA (1) CA2247187C (en)

Also Published As

Publication number Publication date
CA2247187C (en) 2005-10-04

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Effective date: 20140226