GB9315075D0 - Nozzle - Google Patents

Nozzle

Info

Publication number
GB9315075D0
GB9315075D0 GB939315075A GB9315075A GB9315075D0 GB 9315075 D0 GB9315075 D0 GB 9315075D0 GB 939315075 A GB939315075 A GB 939315075A GB 9315075 A GB9315075 A GB 9315075A GB 9315075 D0 GB9315075 D0 GB 9315075D0
Authority
GB
United Kingdom
Prior art keywords
liquid
nozzle
stream
flow channel
gas
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.)
Withdrawn
Application number
GB939315075A
Other versions
GB2280389A (en
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.)
PWT Projects Ltd
Original Assignee
PWT Projects Ltd
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 PWT Projects Ltd filed Critical PWT Projects Ltd
Priority to GB9315075A priority Critical patent/GB2280389A/en
Publication of GB9315075D0 publication Critical patent/GB9315075D0/en
Priority to JP6169626A priority patent/JPH07163912A/en
Publication of GB2280389A publication Critical patent/GB2280389A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23121—Diffusers having injection means, e.g. nozzles with circumferential outlet
    • 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
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • 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
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23126—Diffusers characterised by the shape of the diffuser element
    • B01F23/231262—Diffusers characterised by the shape of the diffuser element having disc shape
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/24—Treatment of water, waste water, or sewage by flotation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biotechnology (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Nozzles (AREA)

Abstract

A nozzle for producing a gas microbubble-saturated stream of liquid from a stream of liquid supersaturated with gas comprises a chamber (1, 2, 3) having an inlet (8) for liquid and a flow channel connecting the inlet to an outlet for outflow of the liquid, the nozzle further incorporating a movable means (6) arranged for movement between a first position, where the means (6) co-operates with the body of the nozzle so as to form a restriction to the flow channel such that, in use, the passage through the restriction thus formed of a stream of liquid supersaturated with gas causes gas microbubbles to be formed in the liquid, and a second position, where the flow channel is unrestricted, the means (6) being biased towards the second position but arranged to be driven towards the first position by the force of a stream of liquid passed through the nozzle. <IMAGE>
GB9315075A 1993-07-21 1993-07-21 Nozzle Withdrawn GB2280389A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9315075A GB2280389A (en) 1993-07-21 1993-07-21 Nozzle
JP6169626A JPH07163912A (en) 1993-07-21 1994-07-21 Nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9315075A GB2280389A (en) 1993-07-21 1993-07-21 Nozzle

Publications (2)

Publication Number Publication Date
GB9315075D0 true GB9315075D0 (en) 1993-09-01
GB2280389A GB2280389A (en) 1995-02-01

Family

ID=10739163

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9315075A Withdrawn GB2280389A (en) 1993-07-21 1993-07-21 Nozzle

Country Status (2)

Country Link
JP (1) JPH07163912A (en)
GB (1) GB2280389A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5674469A (en) * 1995-06-07 1997-10-07 Molecular Biosystems, Inc. Gas-exchange method of making gas-filled microspheres
EP1106257A1 (en) * 1999-12-10 2001-06-13 VELO Spa Device for homogenizing and diffusing liquids for flotation clarifiers

Also Published As

Publication number Publication date
JPH07163912A (en) 1995-06-27
GB2280389A (en) 1995-02-01

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)