FI20075238A - Feeding of fiber suspension flow to flotation cell and flotation cell injector - Google Patents

Feeding of fiber suspension flow to flotation cell and flotation cell injector Download PDF

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Publication number
FI20075238A
FI20075238A FI20075238A FI20075238A FI20075238A FI 20075238 A FI20075238 A FI 20075238A FI 20075238 A FI20075238 A FI 20075238A FI 20075238 A FI20075238 A FI 20075238A FI 20075238 A FI20075238 A FI 20075238A
Authority
FI
Finland
Prior art keywords
injector
flotation cell
fiber suspension
air
flows
Prior art date
Application number
FI20075238A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI119998B (en
FI20075238A0 (en
Inventor
Erkka Nieminen
Original Assignee
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
Application filed by Metso Paper Inc filed Critical Metso Paper Inc
Priority to FI20075238A priority Critical patent/FI119998B/en
Publication of FI20075238A0 publication Critical patent/FI20075238A0/en
Priority to DE102008016264.7A priority patent/DE102008016264B4/en
Priority to AT0050408A priority patent/AT505043B1/en
Publication of FI20075238A publication Critical patent/FI20075238A/en
Application granted granted Critical
Publication of FI119998B publication Critical patent/FI119998B/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • D21B1/32—Defibrating by other means of waste paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/30—Mixing gases with solids
    • 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
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • 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
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B01F25/3124—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow
    • B01F25/31242—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow the main flow being injected in the central area of the venturi, creating an aspiration in the circumferential part of the conduit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/1443—Feed or discharge mechanisms for flotation tanks
    • B03D1/1456—Feed mechanisms for the slurry
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/24—Pneumatic
    • B03D1/247—Mixing gas and slurry in a device separate from the flotation tank, i.e. reactor-separator type
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • D21B1/32—Defibrating by other means of waste paper
    • D21B1/325—Defibrating by other means of waste paper de-inking devices
    • D21B1/327—Defibrating by other means of waste paper de-inking devices using flotation devices
    • 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
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/02—Working-up waste paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • D21F1/70—Pulp catching, de-watering, or recovering; Re-use of pulp-water by flotation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Biotechnology (AREA)
  • Paper (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

The method involves supplying fiber suspension stream to an injector (2) and dividing the fiber suspension stream into sub flows/partial flows, where the flows suck air which is to be mixed with the fiber suspension stream in the injector and the air is mixed to the fiber suspension stream. Different amounts of air in the flows are sucked such that an atmospheric load of mixture of air and fiber mass is different at different points of a diffuser (5) of the injector, where the mixture leaks out/exhausts from the diffuser of the injector. An independent claim is also included for an injector comprising tubing sections.
FI20075238A 2007-04-05 2007-04-05 Feeding of fiber suspension flow to flotation cell and flotation cell injector FI119998B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI20075238A FI119998B (en) 2007-04-05 2007-04-05 Feeding of fiber suspension flow to flotation cell and flotation cell injector
DE102008016264.7A DE102008016264B4 (en) 2007-04-05 2008-03-29 Supplying a fiber suspension stream into a flotation cell and injector for a flotation cell
AT0050408A AT505043B1 (en) 2007-04-05 2008-04-01 FEEDING A FIBER SUSPENSION CURRENT INTO A FLOTATION CELL AND INJECTOR FOR A FLOTATION CELL

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20075238 2007-04-05
FI20075238A FI119998B (en) 2007-04-05 2007-04-05 Feeding of fiber suspension flow to flotation cell and flotation cell injector

Publications (3)

Publication Number Publication Date
FI20075238A0 FI20075238A0 (en) 2007-04-05
FI20075238A true FI20075238A (en) 2008-10-06
FI119998B FI119998B (en) 2009-05-29

Family

ID=38009891

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20075238A FI119998B (en) 2007-04-05 2007-04-05 Feeding of fiber suspension flow to flotation cell and flotation cell injector

Country Status (3)

Country Link
AT (1) AT505043B1 (en)
DE (1) DE102008016264B4 (en)
FI (1) FI119998B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008063780A1 (en) * 2008-12-18 2010-06-24 Voith Patent Gmbh Process for the removal of solids from a fiber suspension by flotation and flotation for its implementation
DE102008064271A1 (en) 2008-12-20 2010-07-01 Voith Patent Gmbh Process for the removal of solids from a fiber suspension by flotation and flotation for its implementation
DE102009006033A1 (en) * 2009-01-24 2010-07-29 Voith Patent Gmbh Flotation method for removing contaminants from aqueous fiber suspension in flotation container, involves supplying flow of aqueous fiber suspension to flow of gas, and collecting and discharging contaminants in aqueous fiber suspension
DE102009011046A1 (en) * 2009-02-28 2010-09-02 Voith Patent Gmbh Flotation device for removal of extraneous material from aqueous pulp suspension, has flow divider dividing stream of pulp suspension into multiple partial streams at short section, where partial streams are unified in flow divider
DE102009040317A1 (en) * 2009-09-05 2011-03-10 Voith Patent Gmbh Mixing apparatus for flotation device for removal of impurities using gas bubbles from aqueous fiber suspension in flotation container, has channels provided with lateral surfaces producing turbulences in sections
AT513135B1 (en) * 2013-04-11 2014-02-15 Andritz Ag Maschf Ventilation device and method with material suction in the injector

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3243223C1 (en) * 1982-11-23 1984-05-24 J.M. Voith Gmbh, 7920 Heidenheim Process and device for flotation of fiber suspensions
DE4309918C2 (en) 1993-03-26 1994-09-15 Voith Gmbh J M Flotation cell with an injector
RU2123616C1 (en) * 1997-10-29 1998-12-20 Попов Сергей Анатольевич Multinozzle liquid-and-gas jet device
AT408957B (en) 2000-02-03 2002-04-25 Andritz Ag Maschf METHOD AND DEVICE FOR VENTILATING DISPERSIONS
GB2382568B (en) * 2001-11-29 2005-03-16 Risbridger Ltd Fill tube diffuser for fuel storage tank
AT411155B (en) * 2002-03-27 2003-10-27 Andritz Ag Maschf DEVICE FOR SEPARATING SOLIDS FROM LIQUIDS BY FLOTATION
ES2283158B1 (en) * 2003-11-10 2008-09-16 Universidad De Sevilla PROCEDURE AND DEVICE FOR THE GENERATION OF FOAMS AND EMULSIONS THROUGH PAIRS OF FACED TUBES.

Also Published As

Publication number Publication date
AT505043A3 (en) 2009-02-15
AT505043A2 (en) 2008-10-15
FI119998B (en) 2009-05-29
FI20075238A0 (en) 2007-04-05
DE102008016264B4 (en) 2016-03-03
AT505043B1 (en) 2009-04-15
DE102008016264A1 (en) 2008-10-09

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