EP1108463A1 - Procede d'emulsification et dispositif de mise en oeuvre de ce procede - Google Patents

Procede d'emulsification et dispositif de mise en oeuvre de ce procede Download PDF

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Publication number
EP1108463A1
EP1108463A1 EP98920744A EP98920744A EP1108463A1 EP 1108463 A1 EP1108463 A1 EP 1108463A1 EP 98920744 A EP98920744 A EP 98920744A EP 98920744 A EP98920744 A EP 98920744A EP 1108463 A1 EP1108463 A1 EP 1108463A1
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EP
European Patent Office
Prior art keywords
working wheel
stator
emulsion
outlet openings
circular chamber
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Withdrawn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
EP98920744A
Other languages
German (de)
English (en)
Inventor
Nikolai Ivanovich Selivanov
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.)
Advanced Molecular Technologies LLC
Original Assignee
Advanced Molecular Technologies LLC
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 Advanced Molecular Technologies LLC filed Critical Advanced Molecular Technologies LLC
Publication of EP1108463A1 publication Critical patent/EP1108463A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/41—Emulsifying
    • B01F23/4105—Methods of emulsifying
    • 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
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/43—Mixing liquids with liquids; Emulsifying using driven stirrers
    • 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
    • B01F25/60—Pump mixers, i.e. mixing within a pump
    • B01F25/64—Pump mixers, i.e. mixing within a pump of the centrifugal-pump type, i.e. turbo-mixers
    • 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
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/272—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed axially between the surfaces of the rotor and the stator, e.g. the stator rotor system formed by conical or cylindrical surfaces

Definitions

  • the present invention relates to technology of preparation of high-dispersion long-stability emulsion of at least two mutually insoluble fluids, and is directly concerned with the method and device for emulsification of such fluids and, particularly, of hydrocarbon fluids and water, through their joint processing with the help of mechanical action.
  • the field of industrial application of the invention covers mainly oil production, oil refining, heat power, fuel, highway construction and allied branches of industry, as well as any other branches associated with the production and/or utilization of emulsions of similar kind.
  • a mixing device for desalination of oil with flushing water before further processing.
  • This device comprises a rotor with a working wheel made as a disc with a peripheral annular wall, wherein a series of slit-like openings is provided for letting out the water-oil mixture.
  • the device comprises also a stator, whose wall, concentric to the working wheel, adjoins the peripheral annular wall of the latter with a minimum clearance and has a series of by-pass openings for passing through the mixture being processed.
  • the stator is provided also with an intake opening for feeding the water-oil mixture being processed into the working wheel cavity and with a discharge opening for discharging the emulsion.
  • the water-oil mixture flowing interruptedly through the outlet openings of the rotating working wheel and the by-pass openings of the stator undergoes forced mechanical audio frequency oscillations, which contribute to the process of dispersion of the flushing water in oil and correspondingly to desalination of the latter.
  • Such a device features technical simplicity and is characterized by a relatively high throughput, but dispersivity of water in the obtained water-oil emulsion is not high, while stability of the latter to breaking in this case is non-critical and even undesirable, since directly after desalination the water-oil emulsion is subjected to dehydration before subsequent processing.
  • a device for a three-staged preparation of a water-fuel oil emulsion comprising a means for preparation of an initial coarse-dispersion mixture of water and fuel oil by its multiple stirring, a high-pressure pump for pre-emulsification of a water-fuel oil mixture by grinding and a homogenizer for a final emulsification by forcing the emulsion through a capillary grate.
  • Dispersivity of water in fuel oil constitutes several tens of micrometers after pre-emulsification and several micrometers after final emulsification.
  • high dispersivity is achieved here by complex technical means at low throughput. Stability of emulsion to breaking in this case is non-critical, since the prepared emulsion is fed directly to the atomizing burner.
  • a mixer for mixing at least two free-flowing substances comprising a rotor containing a shaft running in bearings and rigidly attached to the shaft at least one working disc with a double series of pins normal thereto equidistant along the circumference, and at least one blade-type working wheel; a stator enclosing said working disc and working wheel, and having at least one wall normal to the rotor axis with a double series of pins normal thereto, concentrically subtending relative to the double series of pins of the working disc, as well as intake openings for feeing the fluids being processed to concentric subtending series of pins of the working disc and stator and a discharge opening for letting out the emulsion communicating with the outlet of the blade-type working wheel; a circular chamber limited in the radial direction by the outer series of pins of the stator and subtending concentric wall thereof and communicating with the inlet of the blade-type working wheel; a means for driving
  • such a mixer featuring one working disc and one working wheel ensures dispersivity of the obtained emulsion of the order of several tens of micrometers, which is insufficient from the point of view of stability of emulsion to breaking, and with the aim of increasing the dispersivity, it is necessary to increase the number of the working discs and working wheels correspondingly, i.e. to complicate appreciably such a device in the technical sense. With the increased number of the working discs and working wheels hydrodynamic resistance of the system rises correspondingly, which limits appreciably the possibility of increasing of the capacity of such a device.
  • the present invention is aimed at solving the problem of devising such a method and such a device for emulsification by joint processing of mutually insoluble fluids by means of mechanical action, which would make it possible' to obtain high-dispersion long-stability emulsions using simple and highly efficient technical means.
  • the discharge of emulsion from the circular chamber to the stator discharge opening is effected through a series of by-pass openings equidistant on the coaxial surface of the stator, which during rotation of the working wheel become sequentially arranged opposite to the outlet openings thereof.
  • the method of emulsification according to the invention is effected with the help of a device described below, forming an integral part of the inventor's general intention.
  • R 1.1614 K (mm)
  • ⁇ R 1.1614 C (mm)
  • C is the selected integer in the range of 1 ... K/5.
  • the stator has a cavity for admission of emulsion from the circular chamber communicating with the discharge opening of the stator for letting out of emulsion, said stator cavity communicating with the circular chamber through by-pass openings made in the stator coaxial wall in the plane of arrangement of a series of the working wheel outlet openings and equidistant along the circumference, the number of the stator by-pass openings being 1 ... K.
  • the fluids to be processed of at least two kinds are supplied conjointly into a cavity 1 of a blade-type working wheel 2 through an intake opening 3 of a stator 4.
  • the mixture of the fluids being processed is let out from the cavity 1 thereof into a circular chamber 5 formed by a peripheral surface 6 (Fig. 3) of the working wheel 2 and a subtending coaxial surface 7 (Fig. 3) of the stator 4 through a series of outlet openings 8 equidistant along a peripheral surface 6 of the working wheel 2.
  • the mixture of the fluids being processed continues rotating relative to the central axis 9 according to free-flow laws and undergoes hereat mechanical oscillations induced by the interaction of elementary flows pouring from the outlet openings 8 of the working wheel 2 with the coaxial surface 7 of the stator 4.
  • the processed mixture of fluids is discharged in the form of emulsion from the circular chamber 5 through a discharge opening 10 of the stator 4.
  • emulsion is conveyed from the circular chamber 5 to the discharge opening of the stator 4 through one, several or series of by-pass openings 11 equidistant on the coaxial surface 7 (Fig. 6) of the stator 4.
  • the by-pass openings 11 become arranged sequentially opposite to the outlet openings thereof, in consequence of which periodical disturbances of the flow are induced in the fluid medium and the corresponding mechanical audio frequency oscillations.
  • Emulsion flowing out of the by-pass openings 11 enters the admission cavity 12 of the stator 4 and is discharged therefrom through the discharge opening 13 of the stator 4.
  • the device for effecting the above-described method of emulsification in the basic embodiment of the invention (Fig. 1, 2, 3) comprises a rotor 14 with a shaft 15 running in bearings 16 and 17 and provided with a packing 18.
  • the rotor 14 comprises also at least one working wheel 2 rigidly attached to the shaft 15 and made as a disc 19 having a peripheral annular wall 20.
  • a series of openings 8 equidistant along the circumference for discharging the mixture of fluids being processed is made in the peripheral annular wall 20 of the working wheel 2.
  • the stator 4 containing the working wheel 2 has a wall 21 coaxial there to, an intake opening 3 for feeding the fluids to be processed communicating with the cavity 1 of the working wheel 2, and a discharge opening 10 for letting out of emulsion.
  • an intake branch 22 with individual inlet branches can be provided.
  • the circular chamber 5 for the admission of the mixture of the fluids being processed is limited in the radial direction by the peripheral annular wall 20 of the working wheel 2 and coaxial wall 21 of the stator 4 and communicates with the discharge opening 10 of the stator 4 for letting out of emulsion.
  • R 1.1614 K (mm)
  • ⁇ R 1.1614 C (mm)
  • C is the selected integer in the range of 1 ... K/5.
  • the stator 4 has a cavity 12 for the admission of emulsion from the circular chamber 5 communicating with the discharge opening 13 for letting out of emulsion.
  • the admission cavity 12 of the stator 4 communicates with the circular chamber 5 through the by-pass openings 11 made in the coaxial wall 21 of the stator 4.
  • the by-pass openings 11 lie in the arrangement plane of the outlet openings 8 of the working wheel 2 and are equidistant on the circumference.
  • the number of the by-pass openings 11 constitutes from 1 to K, the number of these openings exceeding K being inexpedient.
  • the shaft 15 of the rotor 14 is connected, via a coupling 23, to a means of driving the rotor 14 at a preset frequency of rotation n, for example, to an electric motor 24.
  • the drive for the rotor 14 can be effected also from other suitable motors of the known types either directly, or with the use of known reduction gears, including those featuring the possibility of control of frequency of rotation in the known manner.
  • the use of a device having one blade-type working wheel 2 will suffice. But in cases of difficult-to-process initial fluids and/or more stringent requirements placed upon properties of emulsion the rotor 14 can contain two and more working wheels 2, sequentially connected along the fluid flow, fitted on the common shaft 15 in a conventional manner.
  • the number K of the outlet openings 8 of the working wheel 2 is selected depending on the desired audio frequency F of forced oscillations in the fluid medium with regard to optimim for particular practical cases of overall dimensions of the device and reasonable frequency of rotation n of the rotor 14.
  • the selection of the number of by-pass openings 11 of the stator 4 is effected depending on the desired relationship between the required volumetric efficiency of the device for emulsification and optimum properties of the obtained emulsion.
  • the width of the outlet openings 8 of the working wheel 2, measured on the peripheral surface 6 thereof in the circumferential direction, constitutes preferably half of their circumferential pitch.
  • the width of the by-pass openings 11 of the stator 4 measured on the coaxial surface ? of stator 4 in the circumferential direction, irrespective of their number, should not preferably exceed that of the outlet openings 8 of the working wheel 2.
  • An identical shape of the openings 8 and 11, prolate in parallel to the central axis 9, is preferred.
  • the device for emulsification described above operates as follows:
  • the fluids to be processed are supplied separately and in a proportioned way in the direction of the arrows through an intake branch 22 and intake opening 3 of the stator 4 into the cavity 1 of the rotating working wheel 2.
  • the rotor 14 with the working wheel 2 is driven via the coupling 23 at a rated frequency of rotation n with the help of the electric motor 24.
  • From the cavity 1 of the working wheel 2 the mixture of fluids under pressure flows through a series of the outlet openings 8 and enters the circular chamber 5 of the stator 4. From the circular chamber 5 the obtained emulsion is conveyed through the discharge opening 10 of the stator 4 in the direction shown by the arrow (Fig. 2).
  • the device is serviceable in any position in space.
  • the device for emulsification operates similarly to that described above, with the exception that the liquid medium being processed flowing from the circular chamber 5 enters the admission cavity 12 of the stator 4 through a series of the by-pass openings 11 made in the coaxial wall 21 of the stator 4. From the admission cavity 12 the obtained emulsion is conveyed through the discharge opening 13 of the stator 4 in the direction shown by the arrow (Fig. 5).
  • the processing according to the invention can be applied successfully to practically any mutually insoluble and reactive or mutually unreactive natural and artificial fluids, as well as various solutions, emulsions, suspensions, etc in a wide range of viscosity and other physical and chemical properties.
  • One of the components of a liquid mixture being processed can advantageously be a solid substance introduced both in a dry ground form and as a suspension.
  • the device for emulsification can be conventionally outfitted with a by-pass pipeline having a standard shut-off-and-control member to ensure the possibility of operation using both the open and partly enclosed circulation, i.e. with the closed or partly opened shut-off-and-control member, respectively.
  • a standard shut-off-and-control member to ensure the possibility of operation using both the open and partly enclosed circulation, i.e. with the closed or partly opened shut-off-and-control member, respectively.
  • the selection of optimum relationship is possible between the volumetric efficiency of the device and the final properties of the emulsion obtained at the outlet.
  • the method and device for emulsification according to the invention can be used for preparing emulsions with both delayed and immediate utilization in certain technological processes at rational combination with the pumping operation to the utilization site.
  • the device according to the invention for preparing the water-fuel oil emulsion directly consumed by a boiler unit heater, can be built in into the fuel feed system to atomizing burners.
  • a delayed utilization of the emulsion prepared according to the invention it can be stored and/or transported for a fairly long term, which can amount to many months at normal temperature, several months at elevated temperature and weeks and months at maximum allowable temperature (99°C or 210°F).
  • emulsion stability denotes stability of the emulsion to breaking, expressed as a storage term thereof at a definite temperature till an unprovoked isolation of free water from the emulsion in an assumed quantity (10% vol.) from the initial content thereof.
  • Processed fluids residual fuel oil (90% vol.) and distilled water (10% vol.) Name Symbol Unit Value Number of working wheel outlet openings K pcs 120 Radius of working wheel peripheral surface R mm 140.0 Radial size of circular chamber ⁇ R mm 9.3 Frequency of working wheel rotation n r.p.m. 2920 Frequency of mechanical oscillations F kHz 5.84 At open circulation: Throughput V l/min 64.0 Dispersivity of water in emulsion ⁇ mcm 9 ...
  • Processed fluids residual fuel oil (70% vol.) and distilled water (30% vol.) Name Symbol Unit Value Number of working wheel outlet openings K pcs 120 Radius of working wheel peripheral surface R mm 140.0 Radial size of circular chamber ⁇ R mm 9.3 Frequency of working wheel rotation n r.p.m. 2920 Frequency of mechanical oscillations F kHz 5.84 At open circulation: Throughput V l/min 64.0 Dispersivity of water in emulsion ⁇ mcm 9 ...
  • Emulsion stability at 24°C (75°F) T months 12.0 60°C (140°F) 8.5 up to 99°C (210°F) 1.0 At 50% enclosed circulation: Throughput V l/min 32.0 Dispersivity of water in emulsion ⁇ mcm 6 ... 9 Emulsion stability at 24°C (75°F) T months >12 60°C (140°F) 10.0 up to 99°C (210°F) 2.0 Example of Embodiment of Invention According to Fig.1.
  • Processed fluids residual fuel oil (50% vol.) and distilled water (50% vol.) Name Symbol Unit Value Number of working wheel outlet openings K pcs 120 Radius of working wheel peripheral surface R mm 140.0 Radial size of circular chamber ⁇ R mm 9.3 Frequency of working wheel rotation n r.p.m. 2920 Frequency of mechanical oscillations F kHz 5.84 At open circulation: Throughput V l/min 64.0 Dispersivity of water in emulsion ⁇ mcm 9 ...
  • Emulsion stability at 24°C (75°F) T months 10.0 60°C (140°F) 7.0 up to 99°C (210°F) 0.5 At 50% enclosed circulation: Throughput V l/min 32.0 Dispersivity of water in emulsion ⁇ mcm 6 ... 9 Emulsion stability at 24°C (75°F) T months 11.0 60°C (140°F) 8.0 up to 99°C (210°F) 1.0 Example of Embodiment of Invention According to Fig.4.
  • Processed fluids residual fuel oil (90% vol.) and distilled water (10% vol.) Name Symbol Unit Value Number of working wheel outlet openings K pcs 192 Number of circular chamber by-pass openings K 1 pcs 128 Radius of working wheel peripheral surface R mm 223.0 Radial size of circular chamber ⁇ R mm 41.8 Frequency of working wheel rotation n r.p.m. 1440 Frequency of mechanical oscillations F kHz 4.62 At open circulation: Throughput V l/min 102.8 Dispersivity of water in emulsion ⁇ mcm 3 ...
  • Processed fluids residual fuel oil (70% vol.) and distilled water (30% vol.) Name Symbol Unit Value Number of working wheel outlet openings K pcs 192 Number of circular chamber by-pass openings K 1 pcs 128 Radius of working wheel peripheral surface R mm 223.0 Radial size of circular chamber ⁇ R mm 41.8 Frequency of working wheel rotation n r.p.m. 1440 Frequency of mechanical oscillations F kHz 4.62 At open circulation: Throughput V l/min 102.8 Dispersivity of water in emulsion ⁇ mcm 3 ...
  • Processed fluids residual fuel oil (50% vol.) and distilled water (50% vol.) Name Symbol Unit Value Number of working wheel outlet openings K pcs 192 Number of circular chamber by-pass openings K 1 pcs 128 Radius of working wheel peripheral surface R mm 223.0 Radial size of circular chamber ⁇ R mm 41.8 Frequency of working wheel rotation n r.p.m. 1440 Frequency of mechanical oscillations F kHz 4.62 At open circulation: Throughput V l/min 102.8 Dispersivity of water in emulsion ⁇ mcm 3 ...

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
EP98920744A 1998-01-13 1998-01-13 Procede d'emulsification et dispositif de mise en oeuvre de ce procede Withdrawn EP1108463A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/RU1998/000005 WO1999036164A1 (fr) 1998-01-13 1998-01-13 Procede d'emulsification et dispositif de mise en oeuvre de ce procede

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EP1108463A1 true EP1108463A1 (fr) 2001-06-20

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WO (1) WO1999036164A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003044430A1 (fr) * 2001-11-21 2003-05-30 Limited Liability Company 'npp Energy Xxi' Procede, dispositif et installation de fabrication d'un carburant composite
FR2835762A1 (fr) * 2002-02-08 2003-08-15 Vmi Dispositif de melange et d'homogeneisation destine a la production d'emulsions
WO2012069703A1 (fr) * 2010-11-26 2012-05-31 Outotec Oyj Pompe
WO2016016755A1 (fr) * 2014-08-01 2016-02-04 Ichemad -Profarb Sp. Z O.O. Disperseur de flux
EP4338826A1 (fr) * 2022-09-15 2024-03-20 BAUER Spezialtiefbau GmbH Dispositif et procédé de mélange d'un milieu de gel mou

Family Cites Families (6)

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Publication number Priority date Publication date Assignee Title
DE2307987A1 (de) * 1973-02-17 1974-08-29 Kloeckner Humboldt Deutz Ag Ruehrwerksflotationszelle mit gelochter stauwand
WO1980001497A1 (fr) * 1979-01-16 1980-07-24 Sred Az Nii Prirodnogo Dispositif de dispersion et d'homogeneisation de la boue de forage
SU1197719A1 (ru) * 1982-12-20 1985-12-15 Московский Ордена Трудового Красного Знамени Институт Химического Машиностроения Роторный аппарат
SU1639733A1 (ru) * 1988-08-29 1991-04-07 Всесоюзный научно-исследовательский технологический институт гербицидов и регуляторов роста растений Гидроакустический насос-диспергатор
DE4020508A1 (de) * 1989-06-28 1991-01-03 Egger Maschf Dispergieranlage
RU2081691C1 (ru) * 1994-12-27 1997-06-20 Алексей Иванович Зимин Резонансный гидромеханический диспергатор

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9936164A1 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003044430A1 (fr) * 2001-11-21 2003-05-30 Limited Liability Company 'npp Energy Xxi' Procede, dispositif et installation de fabrication d'un carburant composite
FR2835762A1 (fr) * 2002-02-08 2003-08-15 Vmi Dispositif de melange et d'homogeneisation destine a la production d'emulsions
EP1338330A2 (fr) * 2002-02-08 2003-08-27 Vmi Dispositif de mélange et d'homogénéisation destiné à la production d'émulsions
EP1338330A3 (fr) * 2002-02-08 2003-10-29 Vmi Dispositif de mélange et d'homogénéisation destiné à la production d'émulsions
WO2012069703A1 (fr) * 2010-11-26 2012-05-31 Outotec Oyj Pompe
CN103249477A (zh) * 2010-11-26 2013-08-14 奥图泰有限公司 泵
AU2011333625B2 (en) * 2010-11-26 2015-08-06 Outotec Oyj Pump
WO2016016755A1 (fr) * 2014-08-01 2016-02-04 Ichemad -Profarb Sp. Z O.O. Disperseur de flux
EP4338826A1 (fr) * 2022-09-15 2024-03-20 BAUER Spezialtiefbau GmbH Dispositif et procédé de mélange d'un milieu de gel mou

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