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EP0067218A1 - Melangeur de liquides - Google Patents

Melangeur de liquides

Info

Publication number
EP0067218A1
EP0067218A1 EP82900477A EP82900477A EP0067218A1 EP 0067218 A1 EP0067218 A1 EP 0067218A1 EP 82900477 A EP82900477 A EP 82900477A EP 82900477 A EP82900477 A EP 82900477A EP 0067218 A1 EP0067218 A1 EP 0067218A1
Authority
EP
European Patent Office
Prior art keywords
fluid
mixing tank
pipe
exit
inlet
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Withdrawn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
EP82900477A
Other languages
German (de)
English (en)
Other versions
EP0067218A4 (fr
Inventor
L. Tony King
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.)
Komax Systems Inc
Original Assignee
Komax Systems 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 Komax Systems Inc filed Critical Komax Systems Inc
Publication of EP0067218A1 publication Critical patent/EP0067218A1/fr
Publication of EP0067218A4 publication Critical patent/EP0067218A4/fr
Withdrawn legal-status Critical Current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
    • 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
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle

Definitions

  • FIG. 1A wherein a two-component mixture, for example, water 2 and oil 3 have been allowed to settle within mixing tank 1.
  • a two-component mixture for example, water 2 and oil 3
  • stirring has begun as shown by arrow 4 and the resultant force exerted upon the fluids exhibits itself particularly at the surface of fluid 3 and at the interface between fluids 2 and 3. This phenomenon is further accentuated as stirring continues 15 as seen in Fig. 1C.
  • vortex formation becomes more acute- the top surface of fluid 3 becomes markedly depressed at 6 while a significant segment of fluid 2 rises at the center of the vortex so that areas 5 and 6 approach each other and, under intense mixing, touch.
  • Vortex formation results in a most advantageous condition for the mechanical mixing of two or more non-miscible fluids.
  • a most ideal mixing system would be one which establishes 25 vortex formation while minimizing the disturbance of the natural upper and lower vortices (see elements 5 and 6 of Fig. IC) .
  • conventional mixing systems have presented a substantial inhibition to vortex formation.
  • J- 30 Conventional mixing paddles have proven to be
  • the conventional mixing paddle is comprised of a shaft, mixing blades and boss which connects the blades to the shaft.
  • the shaft and boss actually interfere with the generation of natural mixing vortices that lift heavier material from the bottom of the mixing tank and suppress or drive light material downwards.
  • Prior art mixing tanks have attempted to minimize disruptions in natural vortex formation by selectively placing baffles against the vertical side walls of the mixing tank.
  • the baffles act to induce the fluid materials to move vertically and mini ⁇ mize stratification within the tank.
  • the baffles act as a resistance to fluid movement within the tank and greatly increase the power requirements necessary to establish and maintain acceptable fluid mixing.
  • -It is thus an object of the present invention to teach a device to maximize fluid mixing.
  • Fig. 2 is a cross-sectional schematic of one embodiment of the present invention.
  • Fig. 3 is a cross-sectional schematic of a preferred embodiment of the present invention.
  • Fig. 4 is a cross-sectional schematic of an even more preferred embodiment of the present invention.
  • a device for the mixing of materials such as two or more immiscible fluids, is taught.
  • the device comprises a mixing tank 1 having a substantially circular cross-section.
  • a fluid inlet pipe 7 having at least one inlet 8 located , below the intended level of the fluid to be mixed 5 within the mixing tank.
  • the tank also embraces a fluid exit pipe 10 having at least one fluid outlet 11 below the intended level of the fluid to be mixed within the tank. Fluid exit 11 is positioned so that the fluid being discharged from pipe 10 moves substan- 10 tially tangentially to the side wall of the mixing tank.
  • Inlet pipe 7 and exit pipe 10 are connected to an inline motionless mixer, such as a Komax mixer, which provides the fluid flow within the mixing tank.
  • the mixing device as shown in Fig. 2 adequately performs the intended function of the present invention
  • the device shown in Fig. 3 provides 25 for improved results. More specifically, it has been found to be advantageous to place the pump below the mixing tank rather than in the position shown in Fig. 2 for not all pumps are self-priming.
  • inlet pipe 7 is opened at its top 13, which allows for the addition of concentrated components to be mixed.
  • inlet pipe 7 is opened at its top 13, which allows for the addition of concentrated components to be mixed.
  • Fig. 4 illustrates yet another improved
  • inlet pipe 7 has been moved proximate the side wall of tank 1 ideally diametrically opposite to the position of inlet pipe 10. Having the inlet ports 8 tangentially positioned as are the exit ports 11, it has been
  • premixing can again be accomplished by introducing fresh components to the top of inlet pipe 7 at 13, the premixing being done in pump 9 as well as in inline motionless mixer
  • inlet 14 is provided downstream of pump 9 for the introduction of air or any other suitable gas to aerate the fluid within the mixer.
  • valve 15 can be located
  • OMPI drawing fluid as shown in Fig. 4, pump 9 acts as a transfer pump to encourage the passage of fluid through valve 15. It should be noted that with such an arrange ⁇ ment, the fluid can continue to be mixed while transferring fluid to the next processing station.
  • pump 9 acts as a transfer pump to encourage the passage of fluid through valve 15. It should be noted that with such an arrange ⁇ ment, the fluid can continue to be mixed while transferring fluid to the next processing station.
  • the present invention was described as a device which enhances vortex formation and thus results in more efficient mixing, other advantages inherent in practicing the present invention would clearly be obvious to those skilled in this art. For example, often times when a mixing operation is shut down, a heavy slurry will settle at the bottom of the mixer and form a dense region of high resistance. In a conventional mixing tank, the mixing blades are caused to begin turning when embedded in such a thick slurry, and it is often difficult if not impossible to commence fluid movement within the mixing tank.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

Dispositif permettant le melange de materiaux, comprenant un recipient de melange (1) presentant une section transversale sensiblement circulaire, une conduite d'entree de fluide (7) possedant au moins un orifice d'entree (8) situe au-dessous du niveau prevu du fluide destine a etre melange a l'interieur du recipient de melange, une conduite de sortie de fluide (10) possedant au moins un orifice de sortie de fluide (11) situe au-dessous du niveau prevu du fluide destine a etre melange a l'interieur du recipient de melange, la sortie de fluide etant sensiblement tangentielle a la paroi laterale du recipient de melange. La conduite d'entree de fluide (7) et la conduite de sortie de fluide (10) sont destinees a etre connectees par l'intermediaire d'une pompe de fluide (19) et, dans un mode de realisation preferentiel, un melangeur sans mouvement en ligne est place en aval de la pompe.
EP19820900477 1980-12-22 1981-12-22 Melangeur de liquides. Withdrawn EP0067218A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US21855580A 1980-12-22 1980-12-22
US218555 1980-12-22

Publications (2)

Publication Number Publication Date
EP0067218A1 true EP0067218A1 (fr) 1982-12-22
EP0067218A4 EP0067218A4 (fr) 1984-07-18

Family

ID=22815562

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820900477 Withdrawn EP0067218A4 (fr) 1980-12-22 1981-12-22 Melangeur de liquides.

Country Status (2)

Country Link
EP (1) EP0067218A4 (fr)
WO (1) WO1982002152A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4452634A (en) * 1982-07-20 1984-06-05 Kawasaki Steel Corporation Method of stirring molten metal and refractory cylinder for the purpose
US4534655A (en) * 1984-09-24 1985-08-13 Komax Systems, Inc. Proportioning device
JPS64995Y2 (fr) * 1984-10-02 1989-01-11
FR2618083B1 (fr) * 1987-05-19 1991-08-23 Lecoffre Yves Dispositif de melange de deux fluides dans une cuve
FR2774008B1 (fr) * 1998-01-26 2000-02-25 Spretec Procede destine a melanger des produits dans une cuve et dispositifs de mise en oeuvre dudit procede
FR3107707B1 (fr) * 2020-02-27 2022-06-24 Nenuphar Système d’agitation et bassin muni d’un tel système d’agitation

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1355190A (en) * 1919-10-31 1920-10-12 Taber Pump Company Process for mixing viscous materials
US2322087A (en) * 1942-12-10 1943-06-15 Socony Vacuum Oil Co Inc Eductor tank mixer
FR1366894A (fr) * 1963-06-05 1964-07-17 Etablissements Daubron Soc D Procédé et appareillage de mélange et d'homogénéisation de liquides à densités différentes et leurs applications
FR1378687A (fr) * 1963-01-08 1964-11-13 Friedrichsfelder Abwasser Und Procédé pour la réalisation de réactions chimiques à l'aide d'un circuit d'eau mélangeuse et dispositif pour sa mise en oeuvre
GB1027846A (en) * 1963-08-07 1966-04-27 Kaiser Aluminium Chem Corp Improvements in or relating to the mixing or heating of materials with liquids
DE2230766A1 (de) * 1971-07-27 1973-05-10 Union Process International Verfahren und vorrichtung zum zerkleinern von in einer fluessigkeit enthaltenen feststoffen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2437694A (en) * 1946-05-15 1948-03-16 Nasa Method for blending powder grains
DE872928C (de) * 1951-09-08 1953-04-09 J K August Lahmann Vorrichtung zum Umschichten, Auflockern und/oder Mischen von Mehl und sonstigem Schuettgut in Silos u. dgl. Vorratsbehaeltern mittels eines in das Gut hineinversenkten Blasrohr-Systems
US2671647A (en) * 1952-03-17 1954-03-09 Leo A Wolpert Mixing device
US3402916A (en) * 1965-12-02 1968-09-24 W A Kates Company Fluid mixing device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1355190A (en) * 1919-10-31 1920-10-12 Taber Pump Company Process for mixing viscous materials
US2322087A (en) * 1942-12-10 1943-06-15 Socony Vacuum Oil Co Inc Eductor tank mixer
FR1378687A (fr) * 1963-01-08 1964-11-13 Friedrichsfelder Abwasser Und Procédé pour la réalisation de réactions chimiques à l'aide d'un circuit d'eau mélangeuse et dispositif pour sa mise en oeuvre
FR1366894A (fr) * 1963-06-05 1964-07-17 Etablissements Daubron Soc D Procédé et appareillage de mélange et d'homogénéisation de liquides à densités différentes et leurs applications
GB1027846A (en) * 1963-08-07 1966-04-27 Kaiser Aluminium Chem Corp Improvements in or relating to the mixing or heating of materials with liquids
DE2230766A1 (de) * 1971-07-27 1973-05-10 Union Process International Verfahren und vorrichtung zum zerkleinern von in einer fluessigkeit enthaltenen feststoffen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO8202152A1 *

Also Published As

Publication number Publication date
WO1982002152A1 (fr) 1982-07-08
EP0067218A4 (fr) 1984-07-18

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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

AK Designated contracting states

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19821109

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840811

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KING, L. TONY