EP0963243B1 - Gerät zum rühren des inhalts eines mit einem luftblasenheber versehenen gefässes - Google Patents

Gerät zum rühren des inhalts eines mit einem luftblasenheber versehenen gefässes Download PDF

Info

Publication number
EP0963243B1
EP0963243B1 EP98910820A EP98910820A EP0963243B1 EP 0963243 B1 EP0963243 B1 EP 0963243B1 EP 98910820 A EP98910820 A EP 98910820A EP 98910820 A EP98910820 A EP 98910820A EP 0963243 B1 EP0963243 B1 EP 0963243B1
Authority
EP
European Patent Office
Prior art keywords
tube
liquid
content
stirring
elevator
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.)
Expired - Lifetime
Application number
EP98910820A
Other languages
English (en)
French (fr)
Other versions
EP0963243A1 (de
Inventor
Jacques Lafont
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of EP0963243A1 publication Critical patent/EP0963243A1/de
Application granted granted Critical
Publication of EP0963243B1 publication Critical patent/EP0963243B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • 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
    • B01F23/234—Surface aerating
    • 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
    • B01F23/234—Surface aerating
    • B01F23/2341—Surface aerating by cascading, spraying or projecting a liquid into a gaseous atmosphere
    • B01F23/23413—Surface aerating by cascading, spraying or projecting a liquid into a gaseous atmosphere using nozzles for projecting the liquid into the gas atmosphere
    • 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

Definitions

  • the invention relates to a device for mixing the contents of a tank.
  • bubble elevator uses a device already used to this and commonly used especially in industry nuclear: it is called bubble elevator and consists of a generally vertical tube, open to its ends and which still includes an inlet nozzle air at an intermediate height. The end is always immersed in the liquid of the tank and corresponds to a liquid inlet opening, while the upper end can be emerged or submerged according to the circumstances and corresponds to a air and liquid mixture ejection opening: indeed, the air introduced into the tube by the tapping rises by carrying with it the liquid occupying the tube, until it comes out of the end the ejected liquid is replaced by liquid from the tank entering through the lower opening. Bubble elevators do not require the use of moving mechanical parts and can therefore be used even in corrosive liquids; they are very effective in stirring and homogenizing the liquid in tanks, in particular for resuspending deposits accumulated at the bottom of the tank.
  • the performance of a bubble elevator can be defined as the quotient of the entrained liquid flow by the air flow supplied. We see that it is very variable and highly dependent on the submergence rate, either the ratio between the height separating the nozzle of air from the level of the tank liquid and the height, unchanging, between the air connection and the top of the elevator; the first of these heights corresponds actually the difference in level between the air intake and the free surface of the liquid. If the liquid is flush with height of the top of the elevator, this is fully submerged and the submergence rate is 100%; this rate decreases as the liquid drops in the tank.
  • the subject of the invention is a bubble elevator which provides both good performance and possibility of auxiliary operation in tanks little filled. It can replace several elevators ordinary.
  • This bubble elevator includes an open tube a lower liquid inlet end, at a upper end of gas mixture ejection and liquid and a gas injection nozzle at a intermediate height between the ends, and it distinguishes in that the tube still comprises at least an additional opening at a height intermediate between the upper end and the air injection nozzle. This new opening can be used to suck up an additional flow of liquid in certain circumstances or to eject on the contrary The mixture.
  • a tube is generally connected to this opening.
  • the bubble elevator in Figure 1 is shown housed in a tank 1 and includes a main tube 2 open at its lower end 3 and at its end upper 4 where, as usual, it is curved in butt shape to reject the gas mixture lift and horizontally driven liquid or even down.
  • An intermediate opening corresponding to an air nozzle 5 is made at little height of the lower end 3; we connect a compressed air line 6 which supplies the mixing gas.
  • the essential element of the invention consists of a additional opening 7 of the main tube 2, located between the tap 5 and the upper end 4 and at which can be connected to a connection tube 8 which from there horizontally or down, and opens in tank 1 below the end superior 4.
  • connection tube 8 lends itself both when drawing the liquid from the tank and ejecting a mixture. It is worth mentioning previously certain geometric characteristics of the elevator and explain their interest. This is how as the main tube widens upward, passing with a diameter D1 on the side of the lower end 3 to a larger diameter D2 on the end side superior 4. The variation in diameter is located a little below the connection opening 7 and it is abrupt, but correct operation would be obtained with a gradual variation in diameter over a small height of the main tube 2.
  • the elevation b a value of about 5 cm for a main tube 2, without notice air exhaust even by increasing the injection rate through the nozzle 5 until tripling.
  • This possibility of reducing the difference in height b is beneficial because it increases the submergence rate of the elevator, all other things being equal, and therefore the extent of its operation in little tanks filled, since the submergence rate corresponding to the operating cut-off remains 1/3. Even when operation is possible with an air connection 5 high, its lowering increases the yield of the lift.
  • the diameter D3 of the connection tube 8, its angle of inclination and its length are determined empirically.
  • the diameter D3 must be smaller than the diameter D2, and the length smaller than that of the lower part (of diameter D1) of the main tube 2.
  • Figure 2a illustrates a situation where the tank 1 is almost empty but where a homogenization of its content is still sought. Air is supplied at the desired rate and it entrains the liquid present in the bottom of tube 2 to connection opening 7 before discharging it through connection tube 8: on thus obtains an operation of the "first stage" of the elevator which only concerns its lower part, while the rest, between the opening of connection 7 and the upper end 4, consists of a "second floor” which remains entirely empty for this operating mode apart from an air leak rate, because its submergence is too low.
  • connection tube 8 which becomes a suction tube for a liquid flow additional.
  • Liquid aspiration at two altitudes further promotes significant mixing of the content of the tank, together with an increase in the flow of liquid entrained in the main tube 2.
  • the opening connection 7 then optimizes the operation of the bubble elevator by allowing suction then to eject a greater flow of liquid than in an ordinary elevator, with identical air flow.
  • Figure 3 shows that the orifice concept intermediate can be generalized to a forklift bubbles with more than two ejection stages: the elevator which is illustrated therein thus comprises a second orifice intermediate 17 above the first (referenced by 7 as in the previous example), and a second tube of connection 18 is connected to it. It is sloping down to tank 1 like the previous one, and its diameter D5 can be similar to the diameter D3 of the first connection tube 8 or slightly higher.
  • the tube 2 then comprises three sections, of diameters D1, D2 and D4, which connect 7 and 17 with variations abrupt or progressive in diameter as previously.
  • the mixture of air and liquid comes out of the elevator 7 and 17 or by the upper end 4 of the tube 2, or more of these places at once function of submergence and air flow, such as previously.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Claims (6)

  1. Vorrichtung zum Rühren des flüssigen Inhalts eines Gefäßes mit wenigstens einem Luftblasenheber, der ein Rohr (2) umfasst, das offen ist an einem unteren Eintrittsende der Flüssigkeit (3), an einem oberen Austrittsende (4) einer Mischung aus der Flüssigkeit und aus Gas, und einer Abzweigung (5) zum Einblasen von Luft in einer Zwischenhöhe, zwischen den beiden Enden,
    dadurch gekennzeichnet, dass das Rohr (2) noch eine zusätzliche Öffnung oder Anschlussöffnung (7) in einer Zwischenhöhe umfasst, die zwischen dem oberen Ende und der Lufteinblasabzweigung liegt und durch die die Flüssigkeit in das Rohr gesaugt werden kann oder aus diesem ausgestoßen werden kann.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Rohr gebildet wird durch einen unteren Teil, der etwas unter der Anschlussöffnung endet, und durch einen oberen Teil mit einem größeren Durchmesser (D2) als der untere Teil.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Teile des Rohrs mittels einer brüsken Durchmesseränderung ineinander übergehen.
  4. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Teile des Rohrs mittels einer progressiven Durchmesseränderung ineinander übergehen.
  5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass ein Abzweigungsrohr (8) an der zusätzlichen Öffnung (7) mit dem Rohr (2) verbunden ist, wobei das Abzweigungsrohr unterhalb des oberen Endes (4) mündet.
  6. Vorrichtung nach Anspruch 1, gekennzeichnet durch wenigstens eine zweite zusätzliche Öffnung (17) in einer Höhe zwischen dem oberen Ende (4) des Rohrs (2) und der Lufteinblas-Abzweigung (5), wobei die zusätzlichen Öffnungen (7, 17) sich in unterschiedlichen Höhen befinden.
EP98910820A 1997-02-28 1998-02-24 Gerät zum rühren des inhalts eines mit einem luftblasenheber versehenen gefässes Expired - Lifetime EP0963243B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9702427 1997-02-28
FR9702427A FR2760197B1 (fr) 1997-02-28 1997-02-28 Dispositif de brassage de contenu d'une cuve comprenant un elevateur a bulles
PCT/FR1998/000359 WO1998037956A1 (fr) 1997-02-28 1998-02-24 Dispositif de brassage de contenu d'une cuve comprenant un elevateur a bulles

Publications (2)

Publication Number Publication Date
EP0963243A1 EP0963243A1 (de) 1999-12-15
EP0963243B1 true EP0963243B1 (de) 2002-07-31

Family

ID=9504300

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98910820A Expired - Lifetime EP0963243B1 (de) 1997-02-28 1998-02-24 Gerät zum rühren des inhalts eines mit einem luftblasenheber versehenen gefässes

Country Status (7)

Country Link
US (1) US6237898B1 (de)
EP (1) EP0963243B1 (de)
JP (1) JP3727072B2 (de)
KR (1) KR100501917B1 (de)
DE (1) DE69806906T2 (de)
FR (1) FR2760197B1 (de)
WO (1) WO1998037956A1 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6322055B1 (en) * 2000-10-02 2001-11-27 Eco-Oxygen Technologies, Llc Gas dissolving apparatus and method
US7566397B2 (en) * 2004-02-09 2009-07-28 Eco Oxygen Technologies, Llc Superoxygenation of raw wastewater for odor/corrosion control
US7320749B2 (en) * 2004-02-09 2008-01-22 Eco-Oxygen Technologies, Llc Method and apparatus for control of a gas or chemical
US7267328B2 (en) * 2004-04-22 2007-09-11 Anthony John Witheridge Aeration of wastewater ponds using airlift pumps
US20080261299A1 (en) * 2007-04-23 2008-10-23 Zeikus J Gregory Pneumatic Bioreactor
US8790913B2 (en) * 2005-10-26 2014-07-29 Pbs Biotech, Inc. Methods of using pneumatic bioreactors
US7628528B2 (en) * 2005-10-26 2009-12-08 PRS Biotech, Inc. Pneumatic bioreactor
US7600741B2 (en) 2006-02-07 2009-10-13 Piotr Lipert Gas bubble mixer
DE102006044624B4 (de) * 2006-09-19 2008-07-10 Koch Membrane Systems Gmbh Vorrichtung zur Begasung einer Flüssigkeit
US7713730B2 (en) * 2007-04-24 2010-05-11 Pbs Biotech, Inc. Pneumatic bioreactor
US20090240640A1 (en) * 2008-03-21 2009-09-24 David Alan Blain Apparatus and method for predicting engine test performance from bench test data
WO2009132192A2 (en) * 2008-04-25 2009-10-29 Pbs Biotech, Inc. Bioreactor apparatus
JP5296565B2 (ja) * 2009-01-28 2013-09-25 株式会社 米崎 攪拌装置
DE102009013930B4 (de) 2009-03-22 2011-05-05 Stiftung Alfred-Wegener-Institut Für Polar- Und Meeresforschung Einrichtung zum Rühren von Fluiden mittels Gasblasen
US9469426B2 (en) 2010-03-08 2016-10-18 Therapeutic Proteins International, LLC Single-use stationary bioreactors and mixing vessels
ES2884099T3 (es) * 2017-02-20 2021-12-10 Oxymem Ltd Sistema de contención para usarse con un módulo de membrana de un reactor de biopelícula aireada por membrana y que comprende un sistema de mezcla de elevación de aire de baja presión
US11839830B2 (en) 2022-01-22 2023-12-12 Stallion Sport Limited Portable electric foam maker

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1936308A (en) * 1930-11-10 1933-11-21 Mueller Wilhelm Apparatus for mixing gaseous and liquid substances
FR41531E (fr) * 1932-03-08 1933-01-28 Appareil à saturer de vapeur d'eau l'air soufflé par un ventilateur
US3840216A (en) * 1972-10-26 1974-10-08 Clark & Vicario Corp Vacuum aeration of liquid waste effluent
US3953003A (en) * 1974-06-06 1976-04-27 Aluterv Aluminiumipari Tervezo Vallalat Tank provided with pneumatic mixing pipe
US4187263A (en) * 1979-01-15 1980-02-05 Aero-Hydraulics Corporation Liquid circulating device
US4569757A (en) * 1980-12-10 1986-02-11 Champion International Corporation Adapter skirt for static aerator mixer
JPS5870895A (ja) * 1981-10-26 1983-04-27 Hisao Makino 多段浄化方法および装置
US4439316A (en) * 1982-06-14 1984-03-27 Kaiyo Koggyo Co. Ltd. Water purifier
US4569804A (en) * 1985-02-13 1986-02-11 Atara Corporation Large bubble flow generator-interface for liquid circulating device
US4911838A (en) * 1987-02-27 1990-03-27 Kabushiki Kobe Seiko Sho Pluri-tubular aerator
US4789503A (en) * 1987-06-15 1988-12-06 Atara Corporation Air removal snorkel device
SU1527186A1 (ru) * 1987-09-18 1989-12-07 Научно-Исследовательский И Проектно-Конструкторский Институт Комплектно-Блочного Строительства Аэратор-эрлифт
US6017020A (en) * 1990-02-01 2000-01-25 Baughman; Michael L. System and method for diffusing gas bubbles into a body of water
US5755976A (en) * 1996-11-13 1998-05-26 Kortmann; Robert W. Pneumatic bubble aeration reactor and method of using same

Also Published As

Publication number Publication date
US6237898B1 (en) 2001-05-29
DE69806906T2 (de) 2003-03-13
KR20000075787A (ko) 2000-12-26
WO1998037956A1 (fr) 1998-09-03
DE69806906D1 (de) 2002-09-05
JP2001513018A (ja) 2001-08-28
FR2760197B1 (fr) 1999-03-26
EP0963243A1 (de) 1999-12-15
JP3727072B2 (ja) 2005-12-14
FR2760197A1 (fr) 1998-09-04
KR100501917B1 (ko) 2005-07-18

Similar Documents

Publication Publication Date Title
EP0963243B1 (de) Gerät zum rühren des inhalts eines mit einem luftblasenheber versehenen gefässes
EP0954217B1 (de) Selbstsaugender siphon, insbesondere fur bewasserung
EP0928252B1 (de) Kraftstoffzuführeinrichtung für einen kraftfahrzeugtank
EP0954373B1 (de) Vorrichtung zum rühren und belüften einer flüssigkeit sowie zur schaumentfernung in einem flüssigkeitsbehandlungsbottich
FR2594697A1 (fr) Chambre de goutte-a-goutte permettant une circulation de liquide, notamment de sang; exempte de bulles
FR3032361A1 (fr) Melangeur pour aspirer et melanger un produit solide avec un liquide provenant d’une cuve de pulverisateur
EP2683458B1 (de) Zyklonstromabscheider
WO2001018380A1 (fr) Dispositif de puisage de curburant pour reservoir de vehicule automobile
EP1773479B1 (de) Dosiervorrichtung zum einführen eines additivs in einen flüssigkeitsstrom
WO2002014207A9 (fr) Bec de remplissage a jet en parapluie et machine de remplissage munie d'un tel bec
FR2680193A1 (fr) Toilettes economes en eau.
FR2644891A1 (fr) Dispositif de prelevement d'echantillons de suspensions radioactives et/ou toxiques contenant des matieres solides
FR2818320A1 (fr) Dispositif de puisage de carburant pour reservoir de vehicule automobile
FR2823742A1 (fr) Dispositif pour brasser et aerer un liquide dans une cuve de traitement
JP2025003660A (ja) 固液分離システム
US6513189B1 (en) Wet attachment apparatus for vacuum cleaners
FR2823743A1 (fr) Dispositif pour brasser et aerer un liquide dans une cuve de traitement
FR2645558A1 (fr) Procede d'enlevement de petrole de la surface de l'eau et recipient collecteur
FR2580621A1 (fr) Injecteur de chlore pour le traitement des eaux usees
EP0051571A1 (de) Emulsionssiphon
FR2466275A1 (en) Liq. and gas mixing device - in which liq. is injected under pressure into container and gas is entrained laterally before entering mixer tube
EP0361600B1 (de) Zerstäubungsdüse für Vergaser einer gemischverdichtenden Brennkraftmaschine
BE550681A (de)
EP0283625A1 (de) Einrichtung zum Absaugen eines partikelbeladenen Fluids und ein mit dieser Einrichtung ausgerüstetes Fahrzeug
FR2545548A1 (fr) Dispositif d'amorcage pour pompe centrifuge

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19990802

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE GB

17Q First examination report despatched

Effective date: 20010420

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 69806906

Country of ref document: DE

Date of ref document: 20020905

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20021004

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20030506

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20160212

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20160224

Year of fee payment: 19

Ref country code: GB

Payment date: 20160216

Year of fee payment: 19

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170228

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69806906

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20170224

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170901

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20170228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170224