AU7952694A - A method and an apparatus for mixing ozone-bearing gas into a pulp-suspension - Google Patents

A method and an apparatus for mixing ozone-bearing gas into a pulp-suspension

Info

Publication number
AU7952694A
AU7952694A AU79526/94A AU7952694A AU7952694A AU 7952694 A AU7952694 A AU 7952694A AU 79526/94 A AU79526/94 A AU 79526/94A AU 7952694 A AU7952694 A AU 7952694A AU 7952694 A AU7952694 A AU 7952694A
Authority
AU
Australia
Prior art keywords
pulp
suspension
bearing gas
mixing ozone
ozone
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.)
Abandoned
Application number
AU79526/94A
Inventor
Rolf Ekholm
Ulf Jansson
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.)
Metso Fiber Karlstad AB
Original Assignee
Kvaerner Pulping Technologies AB
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 Kvaerner Pulping Technologies AB filed Critical Kvaerner Pulping Technologies AB
Publication of AU7952694A publication Critical patent/AU7952694A/en
Abandoned legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/272—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed axially between the surfaces of the rotor and the stator, e.g. the stator rotor system formed by conical or cylindrical surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/272—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed axially between the surfaces of the rotor and the stator, e.g. the stator rotor system formed by conical or cylindrical surfaces
    • B01F27/2722—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed axially between the surfaces of the rotor and the stator, e.g. the stator rotor system formed by conical or cylindrical surfaces provided with ribs, ridges or grooves on one surface
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F2025/91—Direction of flow or arrangement of feed and discharge openings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F2025/91—Direction of flow or arrangement of feed and discharge openings
    • B01F2025/911—Axial flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
AU79526/94A 1993-10-13 1994-10-11 A method and an apparatus for mixing ozone-bearing gas into a pulp-suspension Abandoned AU7952694A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9303352 1993-10-13
SE9303352A SE501895C2 (en) 1993-10-13 1993-10-13 Method and apparatus for mixing ozone-containing gas in a pulp suspension
PCT/SE1994/000955 WO1995010351A1 (en) 1993-10-13 1994-10-11 A method and an apparatus for mixing ozone-bearing gas into a pulp-suspension

Publications (1)

Publication Number Publication Date
AU7952694A true AU7952694A (en) 1995-05-04

Family

ID=20391401

Family Applications (1)

Application Number Title Priority Date Filing Date
AU79526/94A Abandoned AU7952694A (en) 1993-10-13 1994-10-11 A method and an apparatus for mixing ozone-bearing gas into a pulp-suspension

Country Status (3)

Country Link
AU (1) AU7952694A (en)
SE (1) SE501895C2 (en)
WO (1) WO1995010351A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6193406B1 (en) * 1996-12-20 2001-02-27 Andritz-Ahlstrom Oy Method and apparatus for mixing pulp a suspension with a fluid medium with a freely rotatable mixing rotor
AT408986B (en) * 1998-07-28 2002-04-25 Chemiefaser Lenzing Ag Method for pulp alkalization

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE419603B (en) * 1979-11-27 1981-08-17 Kamyr Ab APPLICATION FOR MIXING TREATMENT AGENTS IN SUSPENSIONS

Also Published As

Publication number Publication date
SE501895C2 (en) 1995-06-12
SE9303352D0 (en) 1993-10-13
WO1995010351A1 (en) 1995-04-20
SE9303352L (en) 1995-04-14

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AU7952694A (en) A method and an apparatus for mixing ozone-bearing gas into a pulp-suspension