EP0553709A1 - Dispositif pour introduire un gaz dans un liquide - Google Patents

Dispositif pour introduire un gaz dans un liquide Download PDF

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Publication number
EP0553709A1
EP0553709A1 EP93100864A EP93100864A EP0553709A1 EP 0553709 A1 EP0553709 A1 EP 0553709A1 EP 93100864 A EP93100864 A EP 93100864A EP 93100864 A EP93100864 A EP 93100864A EP 0553709 A1 EP0553709 A1 EP 0553709A1
Authority
EP
European Patent Office
Prior art keywords
gas
swirl chamber
sections
wheel
disks
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Withdrawn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
EP93100864A
Other languages
German (de)
English (en)
Inventor
Siegfried Dörr
Jiri Drsek
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.)
V-Zug AG
Original Assignee
V-Zug AG
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 V-Zug AG filed Critical V-Zug AG
Publication of EP0553709A1 publication Critical patent/EP0553709A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • B01F23/2335—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 direction of introduction of the gas relative to the stirrer
    • B01F23/23352—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 direction of introduction of the gas relative to the stirrer the gas moving perpendicular to the axis of rotation
    • 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
    • B01F23/2335—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 direction of introduction of the gas relative to the stirrer
    • B01F23/23354—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 direction of introduction of the gas relative to the stirrer the gas being driven away from the rotating stirrer
    • 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
    • B01F23/23364—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 between 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
    • B01F23/2366—Parts; Accessories
    • B01F23/2368—Mixing receptacles, e.g. tanks, vessels or reactors, being completely closed, e.g. hermetically closed
    • 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
    • B01F27/15—Stirrers with tubes for guiding the material
    • 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
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/81—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis the stirrers having central axial inflow and substantially radial outflow
    • 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
    • B01F27/111—Centrifugal stirrers, i.e. stirrers with radial outlets; Stirrers of the turbine type, e.g. with means to guide the flow
    • 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
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis

Definitions

  • the present invention relates to a device for introducing a gas into a liquid.
  • An example of such devices is found in boilers in which exhaust gases from combustion are introduced into a water bath in the boiler, on the one hand to heat the water and on the other hand to purify the exhaust gases in the water bath.
  • the invention seeks to remedy this.
  • the invention as characterized in the claims, achieves the object of providing a device for introducing a gas into a liquid, in which there is a swirl chamber through which the gas flows in the longitudinal direction, on which a feed wheel with a central gas inlet and a peripheral one Connects gas outlet area, in which swirling sections are formed, which swirl the liquid with the gas emerging from the feed wheel.
  • the device according to the embodiment shown in Figures 1-3 has a swirl chamber 1, which is cylindrical and has a shaft 22 at the upper end, which serves as a connecting link to a motor 23, by means of which the swirl chamber is rotated.
  • the swirl chamber 1 has a gas inlet section 2.
  • a large number of gas passage openings 19 are arranged, which gas passage openings 19 pass through the wall of the swirl chamber 1 and a connection between the outside and the interior of the swirl chamber 1 form.
  • the swirl chamber 1 is rotatably inserted in a gas supply chamber 20, which gas supply chamber 20 has a connecting element 21 in the form of a pipe socket here, which is to be connected to the respective source of the gas to be introduced.
  • the swirl chamber 1 or the shaft 22 are sealed against the gas supply chamber 20 via seals 31.
  • the swirl chamber 1 is connected to a feed wheel 4.
  • the connection shown in FIG. 1 is a screw connection 32, although obviously other connections can also be used here.
  • the feed wheel has a central gas inlet 5. It has two circular disks 9 and 10 which run parallel and at a distance from one another. Correspondingly, the gas outlet region 6 of the pump wheel 4 extends along the circumference thereof.
  • the disks 9 and 10 are connected to one another along their circumference by plates.
  • the section 8 of these plates that is to say the section which projects into the intermediate space 11 between the disks 9 and 10, forms one of the vanes 8 of the feed wheel and the section which projects in the radial direction beyond the outer circumference of the disks 9 and 10 forms a respective section Swirling element 7, which will be discussed further below.
  • the dimension of the swirling sections, which are formed in one piece with the vanes 8, is parallel to the axis of rotation 12 of the conveyor wheel and is greater than the distance between the upper side surface 13 of the upper disk 9 and the lower side surface 14 of the lower disk 10 of the conveyor wheel.
  • protruding sections 15, 16, 17, 18 are formed, which can further be considered as part of the swirling sections 7.
  • the entire feed wheel 4 is immersed in a liquid, for example the water bath of a suitably constructed boiler.
  • a boiler is shown schematically, which is constructed as follows.
  • the boiler is equipped with a burner 24, which can be an oil or gas burner, for example.
  • the associated combustion chamber is indicated by reference number 25.
  • There is a liquid in the boiler e.g. a water bath 28 available.
  • the liquid to be heated flows from the wake 33 into a coil 29 which is immersed in the water bath 28. In this coil 29, the water is heated due to the elevated temperature of the water bath 28.
  • the partially heated liquid flows from the upper end of the coil 29, e.g. the partially heated water (for example heating or service water) into a heat exchange arrangement which, in the exemplary embodiment shown, is constructed from two heat exchangers 26, 27 through which the liquid to be heated flows partially in parallel flow.
  • the exit of the liquid from the boiler i.e. the lead is indicated by reference number 34.
  • the chimney 35 of the boiler is shown.
  • the outlet 30 of the combustion chamber 25 is connected in a gastight manner to the connecting member, the pipe socket 21 of the gas supply chamber 20.
  • the gas correspondingly flowing into the gas supply chamber 20 enters the interior through the gas passage openings 19 of the rotating swirl chamber 1.
  • the rotation of the swirl chamber 1 is generated by the electric motor 23, which is connected to the swirl chamber 1 via the shaft 22.
  • a speed reduction gear 42 is arranged between the electric motor 23 and the shaft 22, or the electric motor 23 is designed as a geared motor.
  • the swirl chamber 1 and the feed wheel 4 can thus be operated at a lower speed than the motor 23, depending on the conditions in the boiler, so that economical and economical operation is achieved.
  • the exhaust gas flows down through the interior of the swirl chamber 1 and enters the feed wheel 4. Due to the fact that the exhaust gas is subjected to a swirling movement even before it enters the feed wheel 4, pressure fluctuations can already be damped in this section of the device according to the invention, so that they cannot continue into the combustion chamber 25, it being noted that due to the Conveyor wheel 4 is counteracted anyway these pressure fluctuations.
  • the gas flows through the gas outlet end 3 into the intermediate space 11 between the disks 9 and 10, which basically form the feed wheel.
  • the pumping is generated on the one hand by the centrifugal forces and on the other hand by the vanes 8, which, as mentioned above, are part of the plates 7, which run approximately in the radial direction and are arranged along the circumference of the feed wheel 4.
  • the sections of the plates projecting over the circumference of the disks 9 and 10 work in the water bath 28 as swirling members, ie when the conveyor wheel rotates they produce water swirls along the circumference of the conveyor wheel. Further vortex paths are created along the circumference of the conveyor wheel above and below it by the projecting sections 15, 16, 17, 18 of these plates.
  • FIG. 6 and 7 show a further embodiment of the feed wheel.
  • This has a cylindrical distribution chamber 37, which is connected to the swirl chamber 1, for example by means of a screw connection 32, analogous to the embodiment shown in FIG.
  • Arched pipe pieces 36 protrude from the distribution chamber 37.
  • the embodiment shown has 3 pipe pieces 36, it should be understood that the number of the same is arbitrary as long as there is no unbalance when rotating.
  • the direction of rotation is indicated by arrow B.
  • the distribution chamber 37 again has the central gas inlet 5.
  • the peripheral gas outlet area 6 is determined by the outlet ends of the arcuate tubular pieces 36.
  • the swirling sections 7 result in particular from the specially arranged end sections at the outlet areas of the respective pipe sections.
  • the outermost points 43 in the radial direction at the outlet ends of the tube pieces 36 determine an envelope curve 40 which runs coaxially with the cylindrical distribution chamber 37.
  • the cross-sectional areas of the tube pieces 36 at their outlet ends each determine a plane 38, which plane 38 is crossed by the envelope curve 40. This results in an intersection 44 in each case.
  • the tangent 30 running through this intersection 44 and applied to the envelope 40 encloses an angle ⁇ with the plane 38. In the illustrated embodiment, this angle ⁇ is approximately 60 °, but can be, for example, 0 ° to 90 °, depending on the given conditions, for example the speed of the feed wheel, the pressure of the exhaust gas at the pipe outlet.
  • This position of the exits of the pipe sections 36 determined by the plane 38 results in the most favorable intermingling and mixing of exhaust gas and water, depending inter alia on the speed, the flow of the exhaust gas, the prevailing temperatures of the exhaust gas, etc. is that the swirling sections 7 are also formed by at least a part of the tube pieces 36, that is to say the outer surface thereof.
  • Vortexes, the intensity of which obviously increases with increasing distance from the axis of rotation 12 also form on the outer surface of the tube pieces 36 rotating in the water, and the mixing of exhaust gas and water is also supported by the vortices formed on the outer surface of the tube pieces 36.
  • the gas passage openings 19 are designed as slots which, for example, run parallel to the surface line of the throttle chamber 1.
  • These gas passage openings 19 can penetrate the wall of the swirl chamber in the radial direction, but can also, as shown for example in FIG. 9, penetrate the wall at an oblique angle to the direction of the radius.
  • the swirl chamber 1 is surrounded in the area of the gas passage openings 19 by an auxiliary conveyor wheel 41, which is firmly connected to the swirl chamber 1 in the area of the gas inlet section 2.
  • the auxiliary feed wheel 41 has rotor blades 45, which run in the direction of their direction of rotation, represented by the arrow C in FIG. 9, from inside to outside. These blades 45 are arranged between a lower ring 46 and an upper ring 47, which upper ring 47 is connected to the swirl chamber 1, for example by means of screw bolts, for which purpose only the corresponding threaded holes are indicated in FIG. 8 with the reference number 48. Supported in operation the auxiliary feed wheel 41 the flow of the exhaust gas coming from the connecting member 21, in particular through the gas passage openings 19 into the swirl chamber 1, and it can be seen in particular in FIG. 9 that the exhaust gas already has a swirl movement in the uppermost section of the swirl chamber through the slanted slot-shaped gas passage openings is forced.
  • the device according to the invention in particular a boiler equipped with the same, can now be operated extremely economically with respect to the energy to be used.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
EP93100864A 1992-01-31 1993-01-21 Dispositif pour introduire un gaz dans un liquide Withdrawn EP0553709A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00282/92A CH686874A5 (de) 1992-01-31 1992-01-31 Vorrichtung zum Einbringen eines Gases in eine Fluessigkeit.
CH282/92 1992-01-31

Publications (1)

Publication Number Publication Date
EP0553709A1 true EP0553709A1 (fr) 1993-08-04

Family

ID=4183440

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93100864A Withdrawn EP0553709A1 (fr) 1992-01-31 1993-01-21 Dispositif pour introduire un gaz dans un liquide

Country Status (2)

Country Link
EP (1) EP0553709A1 (fr)
CH (1) CH686874A5 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2732236A1 (fr) * 1995-04-03 1996-10-04 Roland Jean Louis Dispositif pour introduire un gaz dans un liquide
WO1998053904A1 (fr) * 1997-05-29 1998-12-03 Brian Latto Melangeur a anneaux tourbillonnaires a comportement modere
EP0993862A1 (fr) * 1998-10-13 2000-04-19 EKATO Rühr- und Mischtechnik GmbH Dispositif de dispersion rotatif et auto-aspirante
WO2001049388A1 (fr) * 1999-12-30 2001-07-12 Outokumpu Oyj Dispositif pour une machine de flottation
FR2818160A1 (fr) * 2000-12-20 2002-06-21 Air Liquide Procede d'oxydation de type oxydation par voie humide ou ozonation

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE879081C (de) * 1951-02-23 1953-06-11 Michael Philosophow Ruehrwerk mit Luftzufuehrung
DE1242159B (de) * 1959-06-04 1967-06-08 Otto Steinle Einrichtung zum Belueften von Fluessigkeiten, insbesondere von Abwasser
DE2544204A1 (de) * 1975-10-03 1977-04-14 Bayer Ag Vorrichtung zum begasen und ruehren von suspensionen und fluessigkeiten
CH599807A5 (en) * 1975-09-18 1978-05-31 Weibel Gebrueder Sewage aeration device
GB2001252A (en) * 1977-06-24 1979-01-31 Kamocki J A mixer for air entrained concrete or ordinary concrete
EP0021470A1 (fr) * 1979-06-01 1981-01-07 Chemap AG Agitateur creux d'apport de gaz dans un liquide
DE9012430U1 (de) * 1990-08-30 1990-10-31 EKATO Industrieanlagen Verwaltungsgesellschaft mbH u. Co, 7860 Schopfheim Begasungsvorrichtung
US5011631A (en) * 1989-11-14 1991-04-30 Sean Hwang Turbo-jet aerator
DE9106768U1 (de) * 1991-06-03 1991-07-25 Stelzer Ruehrtechnik Gmbh, 3530 Warburg Begasungsrührer

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE879081C (de) * 1951-02-23 1953-06-11 Michael Philosophow Ruehrwerk mit Luftzufuehrung
DE1242159B (de) * 1959-06-04 1967-06-08 Otto Steinle Einrichtung zum Belueften von Fluessigkeiten, insbesondere von Abwasser
CH599807A5 (en) * 1975-09-18 1978-05-31 Weibel Gebrueder Sewage aeration device
DE2544204A1 (de) * 1975-10-03 1977-04-14 Bayer Ag Vorrichtung zum begasen und ruehren von suspensionen und fluessigkeiten
GB2001252A (en) * 1977-06-24 1979-01-31 Kamocki J A mixer for air entrained concrete or ordinary concrete
EP0021470A1 (fr) * 1979-06-01 1981-01-07 Chemap AG Agitateur creux d'apport de gaz dans un liquide
US5011631A (en) * 1989-11-14 1991-04-30 Sean Hwang Turbo-jet aerator
DE9012430U1 (de) * 1990-08-30 1990-10-31 EKATO Industrieanlagen Verwaltungsgesellschaft mbH u. Co, 7860 Schopfheim Begasungsvorrichtung
DE9106768U1 (de) * 1991-06-03 1991-07-25 Stelzer Ruehrtechnik Gmbh, 3530 Warburg Begasungsrührer

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2732236A1 (fr) * 1995-04-03 1996-10-04 Roland Jean Louis Dispositif pour introduire un gaz dans un liquide
EP0736322A1 (fr) * 1995-04-03 1996-10-09 Jean-Louis Roland Dispositif pour introduire un gaz dans un liquide
US5643503A (en) * 1995-04-03 1997-07-01 Roland; Jean-Louis Device for introducing a gas into a liquid
WO1998053904A1 (fr) * 1997-05-29 1998-12-03 Brian Latto Melangeur a anneaux tourbillonnaires a comportement modere
US6007237A (en) * 1997-05-29 1999-12-28 Latto; Brian Vortex ring mixer controlled mixing device
EP0993862A1 (fr) * 1998-10-13 2000-04-19 EKATO Rühr- und Mischtechnik GmbH Dispositif de dispersion rotatif et auto-aspirante
WO2001049388A1 (fr) * 1999-12-30 2001-07-12 Outokumpu Oyj Dispositif pour une machine de flottation
EA003357B1 (ru) * 1999-12-30 2003-04-24 Оутокумпу Ойй Устройство для флотационной машины
FR2818160A1 (fr) * 2000-12-20 2002-06-21 Air Liquide Procede d'oxydation de type oxydation par voie humide ou ozonation
WO2002049751A1 (fr) * 2000-12-20 2002-06-27 L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Procede d'oxydation de type oxydation par voie humide ou ozonation

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Publication number Publication date
CH686874A5 (de) 1996-07-31

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