EP3960283A1 - Mehrkomponenten-mischvorrichtung und entsprechendes verfahren - Google Patents

Mehrkomponenten-mischvorrichtung und entsprechendes verfahren Download PDF

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Publication number
EP3960283A1
EP3960283A1 EP21192961.7A EP21192961A EP3960283A1 EP 3960283 A1 EP3960283 A1 EP 3960283A1 EP 21192961 A EP21192961 A EP 21192961A EP 3960283 A1 EP3960283 A1 EP 3960283A1
Authority
EP
European Patent Office
Prior art keywords
product
supply
nozzle
mixing chamber
axis
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.)
Pending
Application number
EP21192961.7A
Other languages
English (en)
French (fr)
Inventor
Thibault Cognon
Sébastien JOUSSELIN
Ludovic DEMESY
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.)
Exel Industries SA
Original Assignee
Exel Industries SA
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 Exel Industries SA filed Critical Exel Industries SA
Publication of EP3960283A1 publication Critical patent/EP3960283A1/de
Pending 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
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B01F25/23—Mixing by intersecting jets
    • B01F25/231—Mixing by intersecting jets the intersecting jets having the configuration of sheets, cylinders or cones
    • 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
    • B01F25/10—Mixing by creating a vortex flow, e.g. by tangential introduction of flow components
    • 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
    • B01F25/28—Jet mixers, i.e. mixers using high-speed fluid streams characterised by the specific design of the jet injector
    • 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
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/315—Injector mixers in conduits or tubes through which the main component flows wherein a difference of pressure at different points of the conduit causes introduction of the additional component into the main component
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
    • B01F33/404—Mixers using gas or liquid agitation, e.g. with air supply tubes for mixing material moving continuously therethrough, e.g. using impinging jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0408—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing two or more liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1036—Means for supplying a selected one of a plurality of liquids or other fluent materials, or several in selected proportions, to the applying apparatus
    • 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
    • B01F2025/91—Direction of flow or arrangement of feed and discharge openings
    • B01F2025/919—Direction of flow or arrangement of feed and discharge openings characterised by the disposition of the feed and discharge openings
    • B01F2025/9191—Direction of flow or arrangement of feed and discharge openings characterised by the disposition of the feed and discharge openings characterised by the arrangement of the feed openings for one or more flows, e.g. for the mainflow and the flow of an additional component
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/30—Mixing paints or paint ingredients, e.g. pigments, dyes, colours, lacquers or enamel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2215/00—Auxiliary or complementary information in relation with mixing
    • B01F2215/04—Technical information in relation with mixing
    • B01F2215/0409—Relationships between different variables defining features or parameters of the apparatus or process

Definitions

  • the present invention relates to a multi-component mixing device comprising at least a first supply of a first product and a second supply of a second product, the mixing device having a mixing chamber having at least a first inlet and a second input, the first feed opening into the mixing chamber at the first input, the second feed opening into the mixing chamber at the second input.
  • the present invention further relates to an associated mixing method.
  • Such a mixing device makes it possible, for example, to mix a base with a catalyst to form a coating product, shortly before coating.
  • mixing devices comprising a mixing chamber having a catalyst inlet and a product base inlet.
  • the product base is introduced into the mixing chamber as a stream, with the catalyst being injected as a trickle.
  • the catalyst then forms a trickle in the base stream.
  • One possibility is to provide one or more mixing elements, such as a propeller or a static mixer.
  • a propeller or a static mixer are likely to have preferential flow paths, so that the mixture is not homogeneous at the outlet.
  • An object of the invention is therefore to improve the mixing device to allow better mixing.
  • the subject of the invention is a mixing device of the aforementioned type, in which the mixing device comprises a nozzle arranged and adapted to inject the second product from the second supply into the mixing chamber in the form of a flat jet, advantageously having a jet angle of between 50° and 80°.
  • the fact of injecting the second product into the mixing chamber in the form of a flat jet, in which the first product is introduced, allows a better distribution of the second product in the first product and a better contact surface between the two products.
  • the first product and the second product are mixed homogeneously at the outlet of the mixing chamber.
  • FIG. 1 An example of a multi-component mixing device 10 according to one embodiment of the invention is shown in the figure 1 to 5 .
  • the mixing device 10 comprises at least a first supply 12 of a first product and a second supply 14 of a second product, a mixing chamber 16 and a nozzle 18.
  • nozzle a means capable of making or letting through a product of any viscosity, also called an injector or insert, for example a slotted nozzle as described below.
  • the mixing chamber 16 defines a mixing space 20.
  • the mixing chamber 16 is, for example, made of stainless steel.
  • the mixing chamber 16 has at least a first inlet 22 and a second inlet 24, and furthermore an outlet 26.
  • the mixing chamber 16 has a flow axis D.
  • the flow axis D is here substantially vertical. In particular, this allows the flow to be facilitated by gravity.
  • the mixing chamber 16 here extends between a first end and a second end along the flow axis D.
  • the first end here corresponds to an upper end 28 of the mixing chamber 16.
  • the second end here corresponds to a lower end 30 of the mixing chamber 16.
  • the mixing chamber 16 has substantially the shape of a hollow cylinder with cylinder axis the flow axis D.
  • the mixing chamber 16 here has a radius, for example of 7.5 mm.
  • the mixing chamber 16 includes a side wall 32 between the upper end 28 and the lower end 30.
  • the first inlet 22 is delimited by the side wall 32.
  • the side wall 32 is substantially cylindrical.
  • the first inlet 22 has the shape of a disc projected onto the side wall 32.
  • the second inlet 24 is here arranged at the upper end 28.
  • the second inlet 24 is centered on the flow axis D.
  • the second inlet 24 has the shape of a disc.
  • the outlet 26 here corresponds to the lower end 30 of the mixing chamber 16.
  • Outlet 26 is centered on flow axis D.
  • Output 26 has the shape of a disc.
  • the first supply 12 opens into the mixing chamber 16 at the level of the first inlet 22.
  • First supply 12 includes a first product source (not shown) and a first supply conduit 34.
  • the first supply conduit 34 is, for example, made of stainless steel.
  • the first supply conduit 34 comprises a first downstream portion 36, the first downstream portion 36 opening into the mixing chamber 16, more particularly at the level of the first inlet 22.
  • the first downstream portion 36 has a cylindrical shape.
  • the first supply 12 is suitable for introducing the first product into the mixing chamber 16 along a central supply axis D′.
  • the first downstream portion 36 extends here mainly along the central supply axis D′.
  • the first downstream portion 36 has as its cylinder axis the central feed axis D′.
  • the respective directions of the central supply axis D′ and of the flow axis D form an angle comprised between 0° and 135°, more particularly comprised between 0° and 90°.
  • the central axis of supply and the axis of flow coincide.
  • the first feed and the second feed are coaxial. More particularly, the first entry extends around the second entry.
  • the first inlet has, for example, a ring shape, and the second inlet has a disc shape surrounded by the inner diameter of the ring.
  • the angle selected makes it possible in particular to obtain more or less turbulence or a flow closer to a laminar flow.
  • the central supply axis D' is orthogonal to the flow axis D.
  • the central supply axis D' extends in a plane perpendicular to the flow axis D .
  • the central supply axis D′ is, for example, horizontal.
  • the central supply axis D′ and the flow axis D each define a respective straight line.
  • the lines have a minimum distance d from each other, corresponding to the distance between the lines.
  • the distance d is nonzero.
  • Said non-zero distance d is subsequently called offset 38 between the central supply axis D′ and the flow axis D.
  • the shift is substantial, that is to say not negligible, that is to say visible to the naked eye.
  • the offset is between 3% of the value of the mixing chamber radius and the value of the mixing chamber radius, more particularly between 10% of the value of the mixing chamber radius and the value of the mixing chamber radius.
  • the offset is between 2.0 millimeters (mm) and 6.0 mm for a mixing chamber of radius 6.0 mm.
  • Said offset notably allows the first product to flow with a whirlwind effect in the mixing space 20.
  • the distance along the direction of the flow axis D between the first inlet 22 and the second inlet 24 is less than or equal to 15.0 mm, preferably 13.0 mm, preferably 12.0 mm.
  • the distance along the direction of the flow axis D extending between the first inlet 22 and the second inlet 24 corresponds, in the example shown, to the distance between the second inlet 24 and a so-called upper end of the first inlet 22 along the direction of the flow axis D.
  • the first supply 12 is here adapted to generate a continuous flow of first product at the first input 22.
  • the first supply conduit 34 is, for example, devoid of a valve.
  • the first supply conduit 34 is provided with a valve configured to control the flow of first product at the level of the first inlet 22.
  • the first supply 12 has no nozzle adapted to inject the first product from the first supply into the mixing chamber in the form of a flat jet. More particularly here, the first supply 12 is devoid of any nozzle.
  • the second supply 14 opens into the mixing chamber 16 at the level of the second inlet 24.
  • the second supply includes a second product source (not shown) and a second supply line 40.
  • the second supply conduit 40 is, for example, made of stainless steel.
  • the second supply conduit 40 has an inner surface 41 delimiting the passage of the second product.
  • the second supply conduit 40 comprises a second downstream portion 42, the second downstream portion 42 opening into the mixing chamber 16, more particularly at the level of the second inlet 24.
  • the second supply 14 is adapted so that the second product has a pressure, more particularly at the level of the second inlet 24, strictly greater than the pressure of the first product, more particularly at the level of the first inlet 22.
  • the pressure of the first product is, for example, between 1 bar, or 1.10 5 Pa, and 500 bar, or 5.10 7 Pa.
  • the pressure of the second product is higher than the pressure of the first product by at least 1.0%, generally by at least 5.0%.
  • This value depends in particular on the viscosity of each of the products to be mixed.
  • the nozzle 18 is arranged and adapted to inject the second product from the second supply 14 into the mixing chamber 16 in the form of a flat jet.
  • the jet has a jet angle ⁇ , at the nozzle outlet, of between 50° and 80°.
  • the nozzle 18 is arranged to inject the second product around a central injection axis, the central injection axis being aligned, or coincident, with the flow axis D.
  • All of the second product passes through the nozzle 18 before reaching the mixing chamber 16.
  • the nozzle 18 is, for example, made of molten carbide, more particularly tungsten, 316 stainless steel or ceramic.
  • the nozzle 18 is here arranged in the second supply 14 close to the second inlet 24.
  • the nozzle 18 is housed in the second supply conduit 40, more particularly in the second downstream portion 42.
  • the nozzle 18 is held in the second supply conduit 40 by a nozzle holder 43 described below.
  • the nozzle 18 has an external shape here presenting rotational symmetry around the central axis of injection D.
  • the nozzle 18 has a downstream end 44, the downstream end 44 corresponding to the point of the nozzle 18 furthest downstream considering the flow of the second product.
  • the downstream end 44 is here arranged close to the second inlet 24.
  • the downstream end 44 and the second inlet 24 are, for example, spaced apart by a distance strictly less than 5.0 mm, preferably 3.0 mm, preferably 2.0 mm.
  • the downstream end 44 is, for example, upstream of the second inlet 24 by said distance.
  • the injection of the second product sends the second product into the mixing chamber 16.
  • downstream end 44 extends downstream of second inlet 24 into mixing chamber 16.
  • nozzle 18 protrudes slightly at downstream end 44 into mixing chamber 16.
  • the distance e along the direction of the flow axis D between the first inlet 22 and the downstream end 44 is less than or equal to 10.0 mm.
  • the distance along the direction of the flow axis D between the first inlet 22 and the downstream end 44 corresponds, in the example shown, to the distance between the downstream end 44 and the upper end of the first inlet 22 along the direction of the flow axis D.
  • the nozzle 18 extends between the downstream end 44 and an upstream end 46 along the central injection axis D.
  • the nozzle 18 has an upstream face 48, housed in the second supply duct, and a downstream face 50, opposite the upstream face 48 and facing the mixing chamber 16.
  • the upstream face 48 delimits the upstream end 46.
  • the downstream face 50 delimits the downstream end 44.
  • the upstream face 48 is substantially planar and is arranged substantially transversely to the central injection axis D.
  • the downstream face 50 is dome-shaped centered on the central injection axis D and split by at least one, in the example shown a single slot 52 perpendicular to the central injection axis D.
  • the slot 52 has lips 54 which form between them an angle typically comprised between 5° and 150°, preferably comprised between 20° and 110°.
  • the nozzle 18 here has an outer shape comprising two cylindrical sections, a first cylindrical section 56 delimiting the upstream face 48 and a second cylindrical section 58 ending in a dome delimiting the downstream face 50.
  • Each cylindrical section has as cylinder axis the central injection axis D.
  • the first cylindrical section 56 has a diameter strictly greater than the diameter of the second cylindrical section 58.
  • the nozzle 18 then defines an outer shoulder 60 on its outer surface.
  • the shoulder 60 is here circumferential.
  • the nozzle 18 delimits at least one passage 64.
  • the nozzle 18 delimits a single passage 64.
  • the nozzle 18 delimits a plurality of passages, for example between two and ten passages.
  • the nozzle 18 delimits at least one ejection orifice 62, in the example shown a single one, the or each ejection orifice 62 here opening into the downstream face 50.
  • the nozzle 18 here comprises as many passage(s) 64 as slot(s) 52 and ejection orifice(s) 62.
  • the or each ejection orifice 62 here forms a portion of the passage 64 or of a respective passage, more particularly the most downstream portion of the passage.
  • the or each passage 64 further comprises an inlet cavity 66 in the nozzle, followed by a channel 68.
  • the or each passage 64 consists, from upstream to downstream, of the inlet cavity 66, of the channel 68 and of the ejection orifice 62.
  • the cavity 64 opens into the upstream face 48.
  • the cavity 64 has a cross section decreasing downstream.
  • the inlet cavity 64 here has a symmetry by rotation around the central injection axis D, the diameter of the inlet cavity 64 decreasing from the upstream end 46 or the upstream face 48 of the nozzle 18 until on channel 66.
  • the cavity 64 has, in the example shown, a bell shape.
  • Channel 66 has a constant cross section.
  • the channel 66 here has a cylindrical shape with a cylinder axis, the central injection axis D.
  • the channel 66 extends in the continuity of the inlet cavity 64.
  • the ejection orifice 62 comprises, more particularly is formed by, from upstream to downstream, a narrowing 70 of the passage and of the slot 52 or of a respective slot.
  • Constriction 70 forms a constriction of channel 68 at a downstream end of channel 68.
  • the constriction 70 forms a circular passage section.
  • the constriction 70 has, for example, a dome shape split by the slot 52.
  • Slot 52 has an increasing dimension from upstream to downstream.
  • the ellipse has an equivalent diameter of 0.3 mm and 2.0 mm, that is, it has an area equal to the area of a circle having the equivalent diameter.
  • the nozzle holder 43 is suitable for carrying the nozzle 18 and keeping it attached to the second supply conduit 40.
  • the nozzle holder 43 is, for example, made of stainless steel.
  • the nozzle holder 43 here has rotational symmetry around the central injection axis D.
  • the nozzle holder 43 here comprises an outer surface 74 capable of cooperating with the inner surface 41 of the second supply conduit 40.
  • the inner surface 41 of the second supply duct 40 has, for example, a thread, and the outer surface 74 has a thread complementary to the thread.
  • the nozzle holder 43 is shrunk in the second supply conduit 40, for example, hot, so that the outer surface 74 extends against the inner surface 41 of the second supply conduit 40.
  • the nozzle holder 43 has an upstream face 76 and a downstream face 78 along the central injection axis D.
  • the nozzle holder 43 also delimits a housing 80 provided to receive the nozzle 18, more particularly in a downstream portion of the nozzle holder 43.
  • the housing 80 is, for example, a through hole along the central injection axis D.
  • the through orifice is delimited by an inner surface 81 of the nozzle holder 43.
  • the through orifice opens on the one hand into the upstream face 76 and on the other hand into the downstream face 78.
  • the cross-section of the through-orifice decreases from upstream to downstream.
  • the through hole has a shoulder 82.
  • the shoulder 82 is formed by a narrowing of the through orifice going from upstream to downstream.
  • the shoulder 60 of the nozzle 18 cooperates with the shoulder 82 of the nozzle holder 43.
  • a seal 84 is here arranged between the shoulder 60 of the nozzle 18 and the shoulder 82 of the nozzle holder 43.
  • the seal 84 is, for example, polytetrafluoroethylene (PTFE).
  • seal 84 is replaced with glue.
  • the shoulder 82 of the nozzle holder 43 forms an abutment for the nozzle 18 along the central injection axis D in the upstream to downstream direction.
  • the nozzle 18 is further held along the central injection axis D in the downstream to upstream direction by a second stop system.
  • the through hole delimits in an upstream portion a complementary indentation 85 of a tool, for example an indentation with a hexagonal section.
  • a seal 86 is also here arranged between the nozzle holder 43 and the inner surface 41 of the second supply conduit 40.
  • the gasket 86 is, for example, made of PTFE.
  • the nozzle 18 is received in the nozzle holder 43, so that the downstream end 44, here more particularly the whole of the downstream face 50, of the nozzle 18 protrudes from the nozzle holder 43 at the level of the downstream face 78 .
  • the second supply 14 further comprises an injection valve 88.
  • the injection valve 88 is adapted to selectively allow the passage of the second product through it.
  • the injection valve 88 is here arranged in the second supply, more particularly in the second supply conduit 40, upstream of the nozzle 18.
  • the injection valve 88 here comprises a system comprising an element 90 movable relative to a seat 92, designed to allow the passage of the second liquid when the element is moved away from the seat and to prevent the passage of the second liquid when the element stretches against the seat.
  • the seat 92 delimits a passage 95 having a decreasing cross-section from upstream to downstream.
  • the passage has, for example, a frustoconical shape.
  • the second supply is such that the second product of the second supply necessarily passes through the passage 95 delimited by the seat 92 before reaching the nozzle 18 and/or the mixing chamber 16.
  • the seat 92 is here fixed relative to the nozzle 18.
  • the seat 92 is here secured to the nozzle holder 43, for example via a holding element 96.
  • the holding element 96 has an outer surface 98 intended to cooperate with the inner surface 81 of the nozzle holder.
  • the outer surface 98 has, for example, a thread complementary to a thread of the inner surface 81 of the nozzle holder.
  • the holding element 96 also has a shoulder 100 capable of holding the seat along the central injection axis in the direction going from downstream to upstream.
  • the holding element 96 has, in the example represented, an imprint 102 complementary to a tool.
  • the imprint 102 corresponds, for example, to a slot perpendicular to the central injection axis.
  • the imprint 102 is, for example, complementary to a screwdriver.
  • the seat 92 rests downstream on the nozzle 18.
  • the seat 92 forms the second abutment system of the nozzle 18 along the central injection axis D, while the nozzle 18 forms an abutment system of the seat 92 along the central injection axis for the direction of upstream to downstream.
  • a seal 104 is here arranged between the seat 92 and the nozzle 18.
  • the gasket 104 is, for example, made of PTFE.
  • the nozzle 18, here also the seal 104, and the seat 92 are kept fixed relative to the nozzle holder 43 along the central injection axis D by the shoulder 60 on the one hand, and by the retaining element secured to the nozzle holder 43 on the other hand.
  • the seat 92 is attached directly to the nozzle holder 43.
  • Movable member 90 is controllable to selectively open or close passage 95 through the seat.
  • element 90 includes a bullet 106 carried on one end of a needle 108.
  • the ball 106 is dimensioned so that it closes the passage 95 when it rests on the edges of said passage 95.
  • the injection valve 88 makes it possible to control the passage of the second product through the second supply conduit 40, towards the nozzle 18, and thus injected into the mixing chamber 16.
  • the seat 92 and the movable element 90 are, for example, made of stainless steel.
  • the device 10 further comprises an air supply 110, the mixing chamber 16 further having an air inlet 112.
  • the air supply 110 opens into the mixing chamber 16 at the level of the air inlet 112.
  • the air inlet 112 is arranged in the side wall 32 of the mixing chamber 16.
  • the air inlet 112 is arranged downstream of the first inlet 22 of the first product in the direction of flow D.
  • Air is injected radially into the mixing chamber 16.
  • the device does not include a nozzle holder, the nozzle being fixed directly to the inner surface of the second supply duct.
  • the seat, if any, is, for example, then also attached directly to the inner surface of the second supply duct.
  • the device comprises more than two product inlets in the mixing chamber, so as to mix more than two products in the mixing chamber. At at least one of the inlets is arranged a nozzle as described previously. More particularly, at all but one of the inlets is arranged a respective nozzle.
  • the device comprises a second mixing chamber similarly comprising a first product inlet and a second product inlet.
  • the second mixing chamber is arranged downstream of the mixing chamber described above, the outlet of the mixing chamber described forming the supply connected to the first inlet of the second mixing chamber, a supply of a third product being connected at the second inlet of the second mixing chamber. This then makes it possible to mix three products successively.
  • the device is thus capable of comprising as many mixing chambers arranged in series as desired, the output of each mixing chamber apart from the last one being connected to the first inlet of the next mixing chamber.
  • the device when a given number n of products is mixed, the device here comprises n-1 nozzles, each product inlet being provided with a nozzle with the exception of an inlet for a product called the base of the mixed.
  • Said method is capable of being adapted to allow the mounting of the described variants of the device, not shown.
  • a device comprising a first feed 12, a second feed 14 and a mixing chamber 16 as previously described is provided.
  • a nozzle 18 as described is placed at the level of the second supply 14, so as to inject the second product from the second supply into the mixing chamber in the form of a flat jet.
  • the nozzle 18 is placed in the nozzle holder 43, here in the through orifice, more particularly so that the shoulder 60 of the nozzle 18 rests on the shoulder 82 of the nozzle holder 43.
  • a seal 84 here annular, for example, advantageously placed between the shoulders 60, 82.
  • a seal 104 here annular, is then, for example, placed on the nozzle 18.
  • the seat 92 is then placed in accordance with what has been described previously.
  • the holding element 96 is inserted into the nozzle holder 43, so as to remain integral with said nozzle holder 43.
  • the holding element 96 is, for example, screwed into the nozzle holder 43, for example using a screwdriver.
  • the assembly formed here of the nozzle 18, of the seat 92, of the retaining element 96 and, where appropriate, of the corresponding seals, is here secured to the nozzle holder 43 in the through orifice.
  • a seal 86 here annular, is arranged on an outer surface of the nozzle holder 43 so as to extend between the nozzle holder 43 and the inner surface 41 of the second supply conduit 40.
  • the nozzle holder 43 is then inserted into the second supply duct 40 and secured to said second supply duct 40, for example by screwing, for example using an Allen key, or alternatively by shrink fitting.
  • the nozzle holder 43 is such that the nozzle 18 injects the second product into the mixing chamber.
  • the movable element 90 is then placed, as well as an actuator of the movable element, so that said element is movable between a closed position in which it extends against the seat and a passage position in which it extends away from seat 92.
  • a device 10 as previously described is provided.
  • a first product is supplied at the first inlet 22 into the mixing chamber 16 by the first supply 12.
  • a second product is provided by the second power supply 14.
  • the second product has a pressure strictly greater than that of the first product, more particularly by at least 1.0%, generally by at least 5.0%, as described above.
  • the second product is injected through the nozzle 18 into the mixing chamber 16 in the form of a flat jet.
  • the jet has a jet angle ⁇ of between 50° and 80° at the nozzle outlet.
  • the element 90 is separated from the seat 92 so as to allow the passage of the second product through the valve 88.
  • the second product enters the nozzle 18 and leaves the nozzle 18 at the level of the ejection orifice 62.
  • the second product is injected in the form of a flat jet on the first product injected into the mixing chamber.
  • the first product and the second product are thus mixed homogeneously at the outlet of the mixing chamber.
  • Such a mixing device makes it possible, for example, to mix a base with a catalyst to form a coating product, in particular in the field of paint.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nozzles (AREA)
EP21192961.7A 2020-08-26 2021-08-25 Mehrkomponenten-mischvorrichtung und entsprechendes verfahren Pending EP3960283A1 (de)

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FR2008721A FR3113608A1 (fr) 2020-08-26 2020-08-26 Dispositif de mélange pluri-composants et procédé associé

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EP3960283A1 true EP3960283A1 (de) 2022-03-02

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US (1) US20220062834A1 (de)
EP (1) EP3960283A1 (de)
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FR (1) FR3113608A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3135628A1 (fr) 2022-05-23 2023-11-24 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Dispositif de fragmentation d’un liquide cryogénique dans une conduite de gaz.

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GB2036586A (en) * 1978-12-13 1980-07-02 Upjohn Co Liquids mixing device and method
EP0070487A1 (de) * 1981-07-22 1983-01-26 MASCHINENFABRIK HENNECKE GmbH Einrichtung zum Herstellen eines fliessfähigen Reaktionsgemisches aus mindestens zwei fliessfähigen, miteinander zu Massivstoff oder Schaumstoff reagierenden Komponenten
WO2001018451A1 (en) * 1999-09-06 2001-03-15 Shell Internationale Research Maatschappij B.V. Mixing device
US6590052B2 (en) * 1997-10-28 2003-07-08 Atofina Process for continuous polymerization with micromixing of reactive fluids
US20030224308A1 (en) * 2002-04-26 2003-12-04 Fuji Photo Film Co., Ltd. Method and apparatus for forming silver halide emulsion particles and method for forming fine particles
WO2011023302A1 (de) * 2009-08-26 2011-03-03 Bayer Materialscience Ag Verfahren und vorrichtung zur herstellung eines sprühauftrags aus reaktivkunststoff

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US2942655A (en) * 1955-04-27 1960-06-28 Fisher Scientific Co Gas burner
US3121457A (en) * 1956-12-11 1964-02-18 Lummus Co Burner assembly for synthesis gas generators
US2965303A (en) * 1959-03-30 1960-12-20 United Aircraft Corp Coolant injection in a fuel nozzle
US3360201A (en) * 1965-10-13 1967-12-26 Gen Machine Company Inc Oil burner combustion head
FR2199666A6 (de) * 1972-09-18 1974-04-12 Ransburg Corp
US4081958A (en) * 1973-11-01 1978-04-04 The Garrett Corporation Low nitric oxide emission combustion system for gas turbines
US4012904A (en) * 1975-07-17 1977-03-22 Chrysler Corporation Gas turbine burner
US4278418A (en) * 1975-12-15 1981-07-14 Strenkert Lynn A Process and apparatus for stoichiometric combustion of fuel oil
US4116383A (en) * 1977-02-10 1978-09-26 United Technologies Corporation Method and apparatus for mixing fluid

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2036586A (en) * 1978-12-13 1980-07-02 Upjohn Co Liquids mixing device and method
EP0070487A1 (de) * 1981-07-22 1983-01-26 MASCHINENFABRIK HENNECKE GmbH Einrichtung zum Herstellen eines fliessfähigen Reaktionsgemisches aus mindestens zwei fliessfähigen, miteinander zu Massivstoff oder Schaumstoff reagierenden Komponenten
US6590052B2 (en) * 1997-10-28 2003-07-08 Atofina Process for continuous polymerization with micromixing of reactive fluids
WO2001018451A1 (en) * 1999-09-06 2001-03-15 Shell Internationale Research Maatschappij B.V. Mixing device
US20030224308A1 (en) * 2002-04-26 2003-12-04 Fuji Photo Film Co., Ltd. Method and apparatus for forming silver halide emulsion particles and method for forming fine particles
WO2011023302A1 (de) * 2009-08-26 2011-03-03 Bayer Materialscience Ag Verfahren und vorrichtung zur herstellung eines sprühauftrags aus reaktivkunststoff

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US20220062834A1 (en) 2022-03-03
CN114100400A (zh) 2022-03-01

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