ES2015722A6 - A method and arrangement for cleansing a fibre suspension from light contaminants. - Google Patents

A method and arrangement for cleansing a fibre suspension from light contaminants.

Info

Publication number
ES2015722A6
ES2015722A6 ES8902401A ES8902401A ES2015722A6 ES 2015722 A6 ES2015722 A6 ES 2015722A6 ES 8902401 A ES8902401 A ES 8902401A ES 8902401 A ES8902401 A ES 8902401A ES 2015722 A6 ES2015722 A6 ES 2015722A6
Authority
ES
Spain
Prior art keywords
cleansing
arrangement
light contaminants
hydrocyclone
apex
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 - Lifetime
Application number
ES8902401A
Other languages
Spanish (es)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of ES2015722A6 publication Critical patent/ES2015722A6/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/18—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force
    • D21D5/24—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force in cyclones
    • 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
    • B04C5/14—Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations
    • 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
    • B04C5/14—Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations
    • B04C5/181—Bulkheads or central bodies in the discharge opening

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cyclones (AREA)
  • Paper (AREA)

Abstract

The invention regards hydrocyclone separation, particularly of cellulose fibers, where the object is to eliminate light contaminants, and where the useful product is exited through apex outlets (13). In order to have good separation efficiency even at low base outlet flow, it is proposed to mount an obstruction (21) in a hydrocyclone for obstructing central axial flow toward the apex. Reject proportions below 30 % and lower can then be combined with good separation efficiency. The number of separation stages can be lowered. The invention is particularly suitable for recycling waste paper.
ES8902401A 1988-07-08 1989-07-07 A method and arrangement for cleansing a fibre suspension from light contaminants. Expired - Lifetime ES2015722A6 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8802580A SE469279C (en) 1988-07-08 1988-07-08 Methods and apparatus for releasing a fiber suspension from light impurities

Publications (1)

Publication Number Publication Date
ES2015722A6 true ES2015722A6 (en) 1990-09-01

Family

ID=20372874

Family Applications (1)

Application Number Title Priority Date Filing Date
ES8902401A Expired - Lifetime ES2015722A6 (en) 1988-07-08 1989-07-07 A method and arrangement for cleansing a fibre suspension from light contaminants.

Country Status (9)

Country Link
EP (1) EP0424431A1 (en)
JP (1) JPH04500392A (en)
AU (1) AU627754B2 (en)
ES (1) ES2015722A6 (en)
FI (1) FI910100A0 (en)
NZ (1) NZ229835A (en)
PT (1) PT91097B (en)
SE (2) SE8802580L (en)
WO (1) WO1990000646A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5322169A (en) * 1990-06-15 1994-06-21 Heidemij Reststoffendiensten B.V. Flotation cyclone
EP0827428A1 (en) * 1995-05-22 1998-03-11 Nordson Corporation Cyclone recovery system and cyclone separator with perforated thimble
US5788728A (en) * 1996-12-03 1998-08-04 Nordson Corporation Powder coating booth with improved cyclone separator
US20150122442A1 (en) * 2012-04-03 2015-05-07 Ovivo Luxembourg S.Å.R.L. Process for removal of solid nonifibrous material from pulp
US11285496B2 (en) * 2019-01-10 2022-03-29 Valmet Technologies Oy Hydrocyclone reject chamber

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE208474C1 (en) *
SE226259C1 (en) * 1969-04-29
SE201650C1 (en) * 1965-01-01
SE311470B (en) * 1965-02-24 1969-06-09 Noss Ab
SE305113B (en) * 1965-11-01 1968-10-14 Svenska Flaektfabriken Ab
SE371375B (en) * 1973-03-05 1974-11-18 Celleco Ab
US3928186A (en) * 1973-07-24 1975-12-23 Boise Cascade Corp Combined pulp cleaning system including high and low pressure drop hydrocyclone cleaners
FI80837C (en) * 1985-05-03 1990-08-10 Larox Ag Hydraulic grading method and device
GB8604462D0 (en) * 1986-02-22 1986-03-26 Elp Products Ltd Hydrocyclone
DE3633150A1 (en) * 1986-09-30 1988-04-07 Voith Gmbh J M SPINE CLEANER
WO1988003842A1 (en) * 1986-11-26 1988-06-02 Delawood Pty. Ltd. Hydrocyclones
FI77066C (en) * 1987-09-01 1989-01-10 Ahlstroem Oy Method and apparatus for purifying pulp suspension

Also Published As

Publication number Publication date
SE469279C (en) 1997-10-20
FI910100A0 (en) 1991-01-08
SE8802580D0 (en) 1988-07-08
AU3861889A (en) 1990-02-05
PT91097B (en) 1994-12-30
SE469279B (en) 1993-06-14
SE8802580L (en) 1990-01-09
EP0424431A1 (en) 1991-05-02
WO1990000646A1 (en) 1990-01-25
NZ229835A (en) 1992-03-26
PT91097A (en) 1990-02-08
JPH04500392A (en) 1992-01-23
AU627754B2 (en) 1992-09-03

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20040503