EP0234768A3 - Agitators - Google Patents

Agitators Download PDF

Info

Publication number
EP0234768A3
EP0234768A3 EP87300911A EP87300911A EP0234768A3 EP 0234768 A3 EP0234768 A3 EP 0234768A3 EP 87300911 A EP87300911 A EP 87300911A EP 87300911 A EP87300911 A EP 87300911A EP 0234768 A3 EP0234768 A3 EP 0234768A3
Authority
EP
European Patent Office
Prior art keywords
liquid
fluid
reservoir
blades
rotor
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.)
Granted
Application number
EP87300911A
Other versions
EP0234768B1 (en
EP0234768A2 (en
Inventor
John Colin Middleton
Colin Ramshaw
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to AT87300911T priority Critical patent/ATE83169T1/en
Publication of EP0234768A2 publication Critical patent/EP0234768A2/en
Publication of EP0234768A3 publication Critical patent/EP0234768A3/en
Application granted granted Critical
Publication of EP0234768B1 publication Critical patent/EP0234768B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • 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
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • 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
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23311—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer axis
    • 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
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23314—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer element
    • 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
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2336—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer
    • B01F23/23362—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer the gas being introduced under the stirrer
    • 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
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B01F27/1123—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades sickle-shaped, i.e. curved in at least one direction
    • 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
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B01F27/1125—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades with vanes or blades extending parallel or oblique to the stirrer axis
    • 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
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/115—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis
    • 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
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
    • B01F27/192—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements

Abstract

Turbine agitator assembly for the dispersion of a fluid in a liquid comprises (a) a reservoir for liquid; (b) a rotor mounted in the reservoir with a number of radially extending blades; and (c) means for sparging a fluid into liquid liquid in the reservoir; in which (d) the fluid sparging means and the rotor being so constructed and arranged that the submerged rotor blades and/or the liquid flow they generate disperse the sparged fluid; such that (e) each of the blades is hollow and has a discontinuous leading edge, only a single trailing edge along an acute angle, no external concave surface and an open radially outer end.
EP87300911A 1986-02-17 1987-02-02 Agitator Expired - Lifetime EP0234768B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87300911T ATE83169T1 (en) 1986-02-17 1987-02-02 STIRRER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB868603904A GB8603904D0 (en) 1986-02-17 1986-02-17 Agitators
GB8603904 1986-02-17

Publications (3)

Publication Number Publication Date
EP0234768A2 EP0234768A2 (en) 1987-09-02
EP0234768A3 true EP0234768A3 (en) 1989-04-26
EP0234768B1 EP0234768B1 (en) 1992-12-09

Family

ID=10593203

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87300911A Expired - Lifetime EP0234768B1 (en) 1986-02-17 1987-02-02 Agitator

Country Status (12)

Country Link
EP (1) EP0234768B1 (en)
JP (1) JPS62193635A (en)
AT (1) ATE83169T1 (en)
AU (1) AU580702B2 (en)
CA (1) CA1257196A (en)
DE (1) DE3782951T2 (en)
ES (1) ES2037078T3 (en)
GB (1) GB8603904D0 (en)
HK (1) HK1001041A1 (en)
IE (1) IE60597B1 (en)
NZ (1) NZ219280A (en)
ZA (1) ZA87882B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0441505A1 (en) * 1990-02-05 1991-08-14 Imperial Chemical Industries Plc Agitators
GB2268420B (en) * 1992-07-04 1995-11-29 Flow Research Evaluation Diagn Improvements relating to liquid treatment apparatus
US5791780A (en) * 1997-04-30 1998-08-11 Chemineer, Inc. Impeller assembly with asymmetric concave blades
JP2003010664A (en) * 2001-07-03 2003-01-14 Kawata Mfg Co Ltd Mixing device for powdery/granular material
DE10336054B4 (en) * 2003-08-01 2005-12-15 Domo Caproleuna Gmbh Process for the preparation of hydroxylammonium salts
DE102007001711A1 (en) * 2007-01-11 2008-07-17 EKATO Rühr- und Mischtechnik GmbH Stirring arrangement with a stirrer and a gassing device
US20080199321A1 (en) * 2007-02-16 2008-08-21 Spx Corporation Parabolic radial flow impeller with tilted or offset blades
WO2013075236A1 (en) * 2011-11-24 2013-05-30 Li Wang Mixing impeller having channel-shaped vanes
US11136958B2 (en) 2012-08-06 2021-10-05 Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno Swallow tail airfoil
NL2009286C2 (en) 2012-08-06 2014-02-10 Stichting Energie Swallow tail airfoil.
CN102974504B (en) * 2012-12-06 2016-05-18 济南圣泉集团股份有限公司 A kind of anti-precipitation coating machine
JP2014136203A (en) * 2013-01-18 2014-07-28 Chugoku Electric Power Co Inc:The Agitator
DE102013002060A1 (en) * 2013-02-07 2014-08-07 Wilfried Rummel Apparatus for producing colloidal fluids with a colloidation vessel and method
JP5898297B2 (en) * 2014-11-20 2016-04-06 グローバルアドバンストメタルジャパン株式会社 Method for producing nitrogen-containing metal powder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2207144A1 (en) * 1972-02-16 1973-08-30 Schoeller Bleckmann Stahlwerke Liquid aerating appts - using vanes with determined gas exit width to vane width ratio
US4305673A (en) * 1980-03-25 1981-12-15 General Signal Corporation High efficiency mixing impeller

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU502018B2 (en) * 1976-05-04 1979-07-12 United States Filter Corporation Mixing apparatus
US4159181A (en) * 1976-12-23 1979-06-26 American Pelletizing Corporation Mixing and pelletizing machine
AU509477B2 (en) * 1977-09-05 1980-05-15 Gousti International Ltd. Mixing apparatus
JPS5724624A (en) * 1980-07-18 1982-02-09 Shozo Urashi Vapor-liquid contact apparatus
JPS5759625A (en) * 1980-09-29 1982-04-10 Yoichi Nagase Stirring blade
SE461444B (en) * 1985-11-21 1990-02-19 Boerje Skaanberg IMPELLER APPLIED FOR THE STIRRING OF FLUID DURING DISPERSION OF GAS THEREOF

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2207144A1 (en) * 1972-02-16 1973-08-30 Schoeller Bleckmann Stahlwerke Liquid aerating appts - using vanes with determined gas exit width to vane width ratio
US4305673A (en) * 1980-03-25 1981-12-15 General Signal Corporation High efficiency mixing impeller

Also Published As

Publication number Publication date
ZA87882B (en) 1987-10-28
DE3782951D1 (en) 1993-01-21
JPS62193635A (en) 1987-08-25
NZ219280A (en) 1988-10-28
AU580702B2 (en) 1989-01-27
HK1001041A1 (en) 1998-05-22
IE870279L (en) 1987-08-17
ATE83169T1 (en) 1992-12-15
DE3782951T2 (en) 1993-07-08
CA1257196A (en) 1989-07-11
GB8603904D0 (en) 1986-03-26
AU6876487A (en) 1987-08-20
EP0234768B1 (en) 1992-12-09
EP0234768A2 (en) 1987-09-02
IE60597B1 (en) 1994-07-27
ES2037078T3 (en) 1993-06-16

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