FI941674A0 - Method for forming gas bubbles in a liquid Method for forming gas bubbles in a liquid and apparatus for applying the method - Google Patents

Method for forming gas bubbles in a liquid Method for forming gas bubbles in a liquid and apparatus for applying the method

Info

Publication number
FI941674A0
FI941674A0 FI941674A FI941674A FI941674A0 FI 941674 A0 FI941674 A0 FI 941674A0 FI 941674 A FI941674 A FI 941674A FI 941674 A FI941674 A FI 941674A FI 941674 A0 FI941674 A0 FI 941674A0
Authority
FI
Finland
Prior art keywords
liquid
dispersion
gas bubbles
forming gas
gas
Prior art date
Application number
FI941674A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI941674A (en
Inventor
Heikki Kauppinen
Original Assignee
Ekokehitys Oy
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 Ekokehitys Oy filed Critical Ekokehitys Oy
Priority to FI941674A priority Critical patent/FI941674A/en
Publication of FI941674A0 publication Critical patent/FI941674A0/en
Priority to PCT/FI1995/000209 priority patent/WO1995027557A1/en
Priority to AU22595/95A priority patent/AU2259595A/en
Publication of FI941674A publication Critical patent/FI941674A/en

Links

Classifications

    • 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
    • B03D1/1431—Dissolved air flotation machines
    • 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
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/45—Mixing liquids with liquids; Emulsifying using flow mixing
    • B01F23/454—Mixing liquids with liquids; Emulsifying using flow mixing by injecting a mixture of liquid and gas
    • 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
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B01F25/21—Jet mixers, i.e. mixers using high-speed fluid streams with submerged injectors, e.g. nozzles, for injecting high-pressure jets into a large volume or into mixing chambers
    • 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
    • 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
    • B03D1/24—Pneumatic
    • B03D1/247—Mixing gas and slurry in a device separate from the flotation tank, i.e. reactor-separator type
    • 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
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/81—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles
    • 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
    • B03D1/02—Froth-flotation processes
    • B03D1/028—Control and monitoring of flotation processes; computer models therefor

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biotechnology (AREA)
  • Physical Water Treatments (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The present invention relates to a method and an apparatus for generating gas bubbles in a liquid, in which method gas and liquid are taken into a dispersion space (2) situated inside a dispersion nozzle device (1), and at least a portion of the dispersion operation is carried out in the dispersion space and in a discharge channel (3) exiting thereof using liquid-gas-liquid dispersion. In the method and apparatus according to the invention, flexible and accurate control of gas bubble size is achieved through altering the length (A) of the dispersion space (2) with the help of an adjuster means (4; 5; 10), or alternatively, through altering simultaneously the length (A) of the dispersion space (2) and the size of the gas infeed opening (12) to the dispersion space with the help of the adjuster means (4; 5; 10).
FI941674A 1994-04-12 1994-04-12 Process for forming gas bubbles in a liquid and apparatus for carrying out the process FI941674A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI941674A FI941674A (en) 1994-04-12 1994-04-12 Process for forming gas bubbles in a liquid and apparatus for carrying out the process
PCT/FI1995/000209 WO1995027557A1 (en) 1994-04-12 1995-04-12 Method of generating gas bubbles in a liquid and apparatus for the implementation of the method
AU22595/95A AU2259595A (en) 1994-04-12 1995-04-12 Method of generating gas bubbles in a liquid and apparatus for the implementation of the method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI941674A FI941674A (en) 1994-04-12 1994-04-12 Process for forming gas bubbles in a liquid and apparatus for carrying out the process

Publications (2)

Publication Number Publication Date
FI941674A0 true FI941674A0 (en) 1994-04-12
FI941674A FI941674A (en) 1995-10-13

Family

ID=8540497

Family Applications (1)

Application Number Title Priority Date Filing Date
FI941674A FI941674A (en) 1994-04-12 1994-04-12 Process for forming gas bubbles in a liquid and apparatus for carrying out the process

Country Status (3)

Country Link
AU (1) AU2259595A (en)
FI (1) FI941674A (en)
WO (1) WO1995027557A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI950752A0 (en) * 1995-02-17 1995-02-17 Ahlstroem Oy Tryflattenflotationsfoerfarande oc--ordordar
DE102012209342A1 (en) * 2012-06-04 2013-12-05 Siemens Aktiengesellschaft Method of adjusting the geometry of a dispersing nozzle
JP6317505B1 (en) * 2017-04-24 2018-04-25 有限会社ベイクルーズ Jet injection device
CN108339673B (en) * 2018-02-10 2023-11-21 内蒙古科灵时代矿业技术有限公司 Cavitation jet flow flotation bubble generator and flotation device
CN108404700B (en) * 2018-03-14 2021-08-10 厦门大学 Airlift type rotary circulation mixing device without inner guide cylinder
WO2020152651A1 (en) * 2019-01-25 2020-07-30 Flsmidth A/S Apparatus and method for uniformly introducing air into a fluidized bed separator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH084731B2 (en) * 1985-10-11 1996-01-24 三菱レイヨン・エンジニアリング株式会社 Gas-liquid mixing device
HU197277B (en) * 1986-07-03 1989-03-28 Vizgazdalkodasi Tudomanyos Kut Equipment for introduction of gases into liquids, primarily for airing of sewages
US5344563A (en) * 1993-06-01 1994-09-06 Noyes Daniel G Wastewater treatment system

Also Published As

Publication number Publication date
AU2259595A (en) 1995-10-30
FI941674A (en) 1995-10-13
WO1995027557A1 (en) 1995-10-19

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Legal Events

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