US3664638A - Mixing device - Google Patents

Mixing device Download PDF

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Publication number
US3664638A
US3664638A US14266A US3664638DA US3664638A US 3664638 A US3664638 A US 3664638A US 14266 A US14266 A US 14266A US 3664638D A US3664638D A US 3664638DA US 3664638 A US3664638 A US 3664638A
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United States
Prior art keywords
fluid
conduit
elements
reynolds number
angle
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US14266A
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English (en)
Inventor
Kenneth M Grout
Richard D Devellian
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.)
National Oilwell Varco LP
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Kenics Corp
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Assigned to CHEMINEER, INC. reassignment CHEMINEER, INC. MERGER (SEE DOCUMENT FOR DETAILS). Assignors: KENICS CORPORATION
Anticipated expiration legal-status Critical
Assigned to HELLER FINANCIAL, INC., A CORP OF DE reassignment HELLER FINANCIAL, INC., A CORP OF DE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHEMINEER, INC., A CORP OF DE
Expired - Lifetime 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
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/4314—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor with helical baffles
    • B01F25/43141—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor with helical baffles composed of consecutive sections of helical formed elements
    • 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
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/4315—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being deformed flat pieces of material
    • B01F25/43151—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being deformed flat pieces of material composed of consecutive sections of deformed flat pieces of material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/0068—Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
    • A61M2025/0073—Tip designed for influencing the flow or the flow velocity of the fluid, e.g. inserts for twisted or vortex flow

Definitions

  • a device for thoroughly mixing components of a fluidic material flowing through a conduit which contains a plu rality of curved sheet-like elements extending longitudinally through the conduit in which consecutive elements are curved in opposite directions and the adjacent edges of consecutive elements are spaced from each other by a distance dependent on the Reynolds number of the fluid and angularly displaced with respect to each other by an angle which diifers from 90 by an amount dependent on said distance.
  • the above limitations of the prior art have been eliminated by constructing a conduit in which the adjacent edges of consecutive curved sheetlike elements are spaced from each other by a distance, the optimum maximum length of which is a function of the Reynolds number of the fluid flowing through the conduit.
  • the optimum maximum spacing preferably is about three diameters of the conduit.
  • the spacing may reach about six diameters.
  • the leading edge of the downstream element should preferably inter- 3,664,638 Patented May 23, 1972 cept the body of fluid which has left the trailing edge of the upstream element along a line substantially at a right angle to the line along which said trailing edge had divided said body.
  • Said body of fluid continues to rotate after it leaves said trailing edge in the same direction which was imparted to it by the upstream element and further continues to rotate for many conduit diameter lengths down through the conduit.
  • the pitch of the rotation of said fluid does not remain constant, but in fact, increases as its distance from said trailing edge increases.
  • the rate of increase of the fluid pitch length is proportional to the Reynolds number of the fluid. It can then be determined that at a particular length of spacing, what should be the proper angle of the downstream mixer element in reference to the upstream mixer element. Said angle will differ from by an amount equal to the angle through which said body has rotated in the intervening space. If no increase in viscosity of the fluid occurs as it flows along the conduit, the spacing between successive elements can remain constant.
  • the spacing between successive elements preferably decreases as such viscosity increases and the angle between successive trailing and leading edge pairs adjusted to produce the right angle interception of the rotating body, as described above.
  • FIG. 1 is a perspective view, partly in section, of a simple form of device according to this invention
  • FIG. 2 is an enlarged partial view of the arrangement shown in FIG. 1;
  • FIG. 3 is a cross-sectional view along line 3-3 of FIG. 2.
  • FIG. 4 is an exploded view of components from which the device of FIG. 1 may be constructed
  • FIG. 5 is a cross-sectional view of an arrangement for illustrating the persistance of rotation of a fluid body in a mixer conduit
  • FIG. 6 is a graph showing the relationships, between the Reynolds number of the fluid flowing through the conduit and the spacing between the trailing and leading edges of successive curved elements to obtain minimum pressure drop without substantial loss of homogeneity.
  • 10 is a hollow tube, preferably cylindrical in cross-section, and providing a conduit through which fluid components A and B are caused to flow in order to be thoroughly mixed.
  • the fluid components are introduced at an upstream end 112. and discharged at a downstream end 14 at which the elements -A and B are thoroughly mixed into a homogeneous stream 16.
  • Within the tube 10 are disposed a plurality of serially arranged curved elements 20, %130.
  • Each of these elements are constructed of a thin flat sheet whose Width preferably, but not necessarily, equals the inner diameter of tube 10 and whose length is preferably 1.25 to several times its Width.
  • Each sheet is twisted so that its upstream and downstream edges are substantially flat and are at a substantial angle to each other.
  • This angle may vary between about 60 to about 210
  • These elements are positioned so that for each pair of successive elements (such as shown in FIG. 2), the downstream edge 32 of the first element and the upstream edge 34 of the next element are spaced from each other by a distance D which is predetermined as will be detailed below and are disposed with respect to each other by an angle a, (see FIG. 3) which likewise is predetermined as will be detailed below. If the upper and lower ends of the element 32 in FIG. 3 are designated as 1 and 2 and the corresponding ends of the element 34 in FIG.
  • Typical arrangements for introducing and discharging the fluid elements and examples of the types of fluid components which may be mixed in a device of this general type are detailed in the Armeniades et al. patent and will not be repeated herein. It should be understood, however, that the fluid components may be any of a vast variety. For example they may be a gas and a liquid, parts of the same liquid at different temperatures, a liquid and finely divided solid particles or, of course, two or more different liquids.
  • fluidic material will be used to designate the general class of liquids, gases and other flowable materials which it may be desired to mix. It is further to be understood that the terms fluid and fluidic material will be used interchangeably herein. It is to be understood, of course, that more than two fluidic material components may be mixed in devices according to this invention, the components A and B being merely illustrative.
  • FIG. 5 The nature of the continued rotation of the stream may be better understood from the illustration shown in FIG. 5.
  • a conduit 10 having a single mixer element 44 mounted therein.
  • the left hand end of conduit 10 is the upstream end and the right hand end of conduit 10 is the downstream end.
  • the mixer blade 44 is shown, by way of example, having a length of about 1.5 d, where d is the inner diameter of conduit 10, and turning the fluid body through about 180.
  • the dotted curves extending from the downstream edge of element 44 represents the manner in which the rotation of the fluid body persists in its downstream flow.
  • the fluid body will have rotated 90 from the position at which it left the trailing edge of element 44 and at the nodes 47, 49, 51 and '53 the fluid will have rotated 180 from such trailing edge position.
  • the fluid body can be considered as having a pitch whose length is the distance between successive nodes. That pitch may be conveniently defined in terms of the inner diameter d of conduit 10.
  • each mixer structure will possess a characteristic fluid pitch profile for each Reynolds number.
  • the fluid components may be portions of the fluid at diiferent temperatures, components with different densities, and the like.
  • the actual spacing between mixer blades can, be greater than S in order to achieve an even greater degree of pressure drop.
  • the mixer blades are spaced closer than the distance S, some of the benefits of this invention may still be achieved although with some increase in pressure drop over the minimum possible pressure drop.
  • the actual spacing between mixer blades must be substantial in order to achieve substantially reduced pressure drops over the prior art. In general the spacing between blades should be a substantial distance which is of the order of the homogeneity loss distance or less.
  • the leading edge 34 should intercept the rotating body of fluid in the plenum 36 at right angles to the line along which the preceding trailing edge 32 had divided said body. In such case, the angle will differ from 90 by the angle through which the fluid will have rotated in the plenum 36 between the time it left the trailing edge 32 and reaches the leading edge 34.
  • a characteristic Reynolds number at which it will be designed to operate. The characteristic fluid pitch profile will then be determined as described above. Under the principles explained in connection with FIG. 6, a specific spacing between successive mixer blades will be chosen.
  • This spacing will fix the point on the characteristic fluid pitch profile at which the leading edge of the downstream mixer blade will be located. If it is located at a loop of such profile, it will be seen that the fluid body will have rotated through 90 after leaving the upstream trailing edge and therefore the angle a will be 180. If such leading edge is located at a node the angle a will be 90. Therefore, as the position of the leading edge is moved from a node along one pitch length to a loop and then on to the next node, the angle a will increase from 90 to 180 and then back to 90.
  • the spacing between mixer elements and the angle or will be the same for each successive pair of elements. However, in some cases there may be a change in the viscosity of the fluid during its passage through the present mixer due to a reaction occurring in the fluid in such passage. Since the user will know the elements of the fluid which he desires to mix and also the velocity at which he will pass the fluid through the device, he will be able to predetermine the viscosity of the fluid at each point along the tube 10.
  • a mixer with values of spacing and 0: adapted to match the changing Reynolds numbers along the tube can be constructed.
  • each device constructed according to this invention will be characterized by a specific Reynolds number or, in the case of varying viscosity, by a Reynolds number profile along the length of the device. This number or profile thus becomes a permanent characteristic of the device so that each such device can be said to possess a characteristic Reynolds number.
  • a specific Reynolds number or, in the case of varying viscosity by a Reynolds number profile along the length of the device.
  • This number or profile thus becomes a permanent characteristic of the device so that each such device can be said to possess a characteristic Reynolds number.
  • Such term will be used in the above sense in the claims hereof.
  • any user of the device will know the limits of the viscosity and velocity of the fluid which he will mix by means of any given model of the device.
  • Such a mixer may be assembled, for example, with components as shown in FIG. 4.
  • Each curved element or mixer blade is initially mounted in a separate short length of tubing, the left hand turning element 20 being mounted in a short length of tubing 38 and the right hand turning element 21 in a short length of tubing 40.
  • the spacing between each successive pair of elements is determined by the length of a simple piece of tubing 42 interposed between the lengths of tubing 30 and 40. Having predetermined the spacing by applying the principles of this invention, the length of 40 is so selected as to result in such spacing when the tubing members 38, 42 and 40 are assembled and secured to each other, in the order as indicated in FIG. 4.
  • the tubing elements are rotated on their axes with respect to each other until the desired angle is achieved, whereupon the members 38 and 40 are held fixed in such position until the parts have been secured to each other.
  • any means of fastening such members together may be used, such as brazing, welding, gluing, plastic setting, clamping or the like.
  • a device for mixing fluid components which comprises:
  • conduit through which a stream of said components is adapted to flow, said conduit containing a plurality of curved sheet-like elements extending longitudinally within said conduit, each of said elements extending substantially to the inner walls of said conduit;
  • each successive element being curved in the opposite sense to that of the preceding element
  • each successive element being disposed to intercept said body at a substantial angle to the line of said body along which the trailing edge of the preceding element has divided said body of fluid.
  • a device wherein the characteristic Reynolds number of said device is greater than about References Cited UNITED STATES PATENTS 3,297,305 1/1-967. Walden 259-4 3,286,992 11/1966 Armeniades et al. 259-4 v FOREIGN PATENTS 735,033 8/1932 France 259-4 WALTER A. SCHEEL, Primary Examiner A. I. CANTOR, Assistant Examiner

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
US14266A 1970-02-24 1970-02-24 Mixing device Expired - Lifetime US3664638A (en)

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FR (1) FR2078986A5 (enrdf_load_stackoverflow)
SE (1) SE372426B (enrdf_load_stackoverflow)

Cited By (71)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3733057A (en) * 1971-09-07 1973-05-15 Cons Paper Inc In-line fluid mixer
JPS497509A (enrdf_load_stackoverflow) * 1972-05-30 1974-01-23
US3799509A (en) * 1972-03-02 1974-03-26 Du Pont Mixer for a melt spinning apparatus
US3848507A (en) * 1971-11-12 1974-11-19 Ici Australia Ltd Pipeline for delivering cross-linked slurried explosives
JPS49133612A (enrdf_load_stackoverflow) * 1973-04-28 1974-12-23
US3860217A (en) * 1973-04-26 1975-01-14 Kenics Corp Shear mixer
US3861652A (en) * 1972-11-15 1975-01-21 Du Pont Mixing device
US3871624A (en) * 1971-04-29 1975-03-18 Sulzer Ag Mixing apparatus and method
US3923288A (en) * 1973-12-27 1975-12-02 Komax Systems Inc Material mixing apparatus
US3953002A (en) * 1973-09-21 1976-04-27 England Jr Herbert C Motionless mixing device
DE2549424A1 (de) * 1974-11-20 1976-05-26 Ford Werke Ag Geraet zum verspruehen eines fluids mittels eines druckgases, insbesondere mit druckluft betriebene spruehpistole
US3999592A (en) * 1975-04-21 1976-12-28 The Quaker Oats Company Apparatus and method for manufacturing cores and molds with static mixer stage
US4026967A (en) * 1976-06-25 1977-05-31 E. I. Du Pont De Nemours And Company Process for making grafted polymeric material
US4051065A (en) * 1974-09-03 1977-09-27 Nalco Chemical Company Apparatus for dissolving water soluble polymers and gums in water
US4109318A (en) * 1977-04-15 1978-08-22 General Signal Corporation Fluid injection and sampling device for an in-line blender
US4123178A (en) * 1977-03-21 1978-10-31 General Signal Corporation In-line blender
US4179222A (en) * 1978-01-11 1979-12-18 Systematix Controls, Inc. Flow turbulence generating and mixing device
US4208136A (en) * 1978-12-01 1980-06-17 Komax Systems, Inc. Static mixing apparatus
US4216085A (en) * 1978-08-18 1980-08-05 Iowa Beef Processors, Inc. Flotation method and apparatus
US4281935A (en) * 1980-01-25 1981-08-04 E. I. Du Pont De Nemours And Company Additive injection valve
US4284105A (en) * 1979-11-09 1981-08-18 Union Carbide Corporation Discrete spiral flow imparting device
US4404173A (en) * 1980-09-24 1983-09-13 Unc Recovery Corporation Apparatus for contacting substantially immiscible liquids
US4408038A (en) * 1982-03-29 1983-10-04 E. I. Du Pont De Nemours & Co. In-line coagulation process for fluoroelastomer emulsions
US4408893A (en) * 1982-04-28 1983-10-11 Luwa A.G. Motionless mixing device
US4439405A (en) * 1980-09-24 1984-03-27 Unc Recovery Corporation Method for varying the mixing time and proportions in the contacting of substantially immiscible liquids
WO1984002088A1 (en) * 1982-11-29 1984-06-07 Merix Corp Packing unit
US4505957A (en) * 1979-07-19 1985-03-19 Nordson Corporation Coating by atomization of high (i.e., about 70-99% by weight) solids film-forming compositions
US4538920A (en) * 1983-03-03 1985-09-03 Minnesota Mining And Manufacturing Company Static mixing device
US4747697A (en) * 1985-12-20 1988-05-31 Hisao Kojima Fluid mixer
US4749527A (en) * 1985-09-06 1988-06-07 Rasmusen Hans C Static aerator
US4776704A (en) * 1986-12-15 1988-10-11 Dentsply Research & Development Corp. Mixing and dispensing syringe
EP0311409A1 (en) * 1987-10-07 1989-04-12 Ceske Vysoke Uceni Technicke V Praze, Rektorat Arrangement for continuous mixing of fluids
US4840493A (en) * 1987-11-18 1989-06-20 Horner Terry A Motionless mixers and baffles
US4848920A (en) * 1988-02-26 1989-07-18 Husky Injection Molding Systems Ltd. Static mixer
US4850705A (en) * 1987-11-18 1989-07-25 Horner Terry A Motionless mixers and baffles
US5053202A (en) * 1990-08-02 1991-10-01 Olin Corporation Static mixer configuration
US5063000A (en) * 1989-05-03 1991-11-05 Mix Thomas W Packing elements
US5225168A (en) * 1991-09-03 1993-07-06 Caterpillar Inc. Static mixing apparatus
US5370273A (en) * 1991-10-16 1994-12-06 Minnesota Mining And Manufacturing Company Multi-component applicator assembly
US5407607A (en) * 1993-11-09 1995-04-18 Mix; Thomas W. Structured packing elements
US5549820A (en) * 1994-03-04 1996-08-27 Eastman Kodak Company Apparatus for removing a component from solution
US5759603A (en) * 1996-11-15 1998-06-02 Kellogg Company Process for producing a food product having a distinct phase
US5830943A (en) * 1994-01-24 1998-11-03 Dsm N.V. Process for the preparation of a modified polymer for powder paints
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US5997516A (en) * 1994-12-16 1999-12-07 Imperial College Of Science, Technology & Medicine Modified cannula
US6079868A (en) * 1997-12-18 2000-06-27 Advanced Bio Surfaces, Inc. Static mixer
US6312670B1 (en) * 1995-09-25 2001-11-06 R. Eric Montgomery Tooth bleaching compositions
WO2001064333A3 (en) * 2000-03-02 2002-02-21 Dow Chemical Co Tubular reactor, process for conducting liquid/liquid multiphase reactions in a tubular reactor, and a process for ring-nitrating aromatic compounds
US6365080B1 (en) 1999-06-09 2002-04-02 Ronald J. Parise Method of making a multi-portion mixing element
US6503438B2 (en) 2000-06-28 2003-01-07 Beaumont Runner Technologies, Inc. Method and apparatus for balancing flowing conditions of laminar flowing materials
US6511635B2 (en) * 1998-05-25 2003-01-28 Total Raffinage Distribution S.A. Fluid state catalytic cracking reactor having solid fastened packing element for homogeneously distributing particle flow
US6596242B1 (en) * 1996-09-30 2003-07-22 Shell Oil Company Reactor riser of a fluidized-bed catalytic cracking plant
US20050094482A1 (en) * 2003-10-31 2005-05-05 Nordson Corporation Method and apparatus for producing closed cell foam
US7041218B1 (en) 2002-06-10 2006-05-09 Inflowsion, L.L.C. Static device and method of making
US7045060B1 (en) 2002-12-05 2006-05-16 Inflowsion, L.L.C. Apparatus and method for treating a liquid
US20070140045A1 (en) * 2005-10-17 2007-06-21 Degussa Ag Mixer for liquid colorants and method for mixing liquid colorants
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US7331705B1 (en) 2002-06-10 2008-02-19 Inflowsion L.L.C. Static device and method of making
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WO2016043614A3 (en) * 2014-08-29 2016-06-16 Micula Viorel Modular system for swirly driving and controlled orientability of hot air flows
CN108452558A (zh) * 2018-01-25 2018-08-28 安徽理工大学 自吸型紊流喷管以及应用该喷管的选矿废水处理设备
US10392568B2 (en) 2013-11-26 2019-08-27 Phillips 66 Company Sequential mixing system for improved desalting
WO2020109366A1 (en) 2018-11-28 2020-06-04 Basf Se Process for producing a polyurethane composition
US11206853B2 (en) * 2017-04-12 2021-12-28 Gaia Usa, Inc. Apparatus and method for generating and mixing ultrafine gas bubbles into a high gas concentration aqueous solution
WO2023117854A1 (en) 2021-12-20 2023-06-29 Basf Se Process for the continuous production of aqueous polyurethane dispersions
US11712669B2 (en) 2018-06-01 2023-08-01 Gaia Usa, Inc. Apparatus in the form of a unitary, single-piece structure configured to generate and mix ultra-fine gas bubbles into a high gas concentration aqueous solution
EP4509207A2 (de) 2024-12-18 2025-02-19 Hirschberg Engineering AG Kompakter statischer mischer und verfahren zum mischen von wenigsten zwei fluiden

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BE792819A (fr) * 1971-12-15 1973-06-15 Corning Glass Works Procede et appareil pour produire du verre sensiblement homogene et exempt de cordes
GB8706148D0 (en) * 1987-03-16 1987-04-23 Exxon Chemical Patents Inc Dispersions & emulsions
JP3426675B2 (ja) * 1993-12-24 2003-07-14 関西電力株式会社 整流装置

Cited By (88)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871624A (en) * 1971-04-29 1975-03-18 Sulzer Ag Mixing apparatus and method
US3733057A (en) * 1971-09-07 1973-05-15 Cons Paper Inc In-line fluid mixer
US3848507A (en) * 1971-11-12 1974-11-19 Ici Australia Ltd Pipeline for delivering cross-linked slurried explosives
US3799509A (en) * 1972-03-02 1974-03-26 Du Pont Mixer for a melt spinning apparatus
JPS497509A (enrdf_load_stackoverflow) * 1972-05-30 1974-01-23
US3861652A (en) * 1972-11-15 1975-01-21 Du Pont Mixing device
US3860217A (en) * 1973-04-26 1975-01-14 Kenics Corp Shear mixer
JPS49133612A (enrdf_load_stackoverflow) * 1973-04-28 1974-12-23
US3953002A (en) * 1973-09-21 1976-04-27 England Jr Herbert C Motionless mixing device
US3923288A (en) * 1973-12-27 1975-12-02 Komax Systems Inc Material mixing apparatus
US4051065A (en) * 1974-09-03 1977-09-27 Nalco Chemical Company Apparatus for dissolving water soluble polymers and gums in water
DE2549424A1 (de) * 1974-11-20 1976-05-26 Ford Werke Ag Geraet zum verspruehen eines fluids mittels eines druckgases, insbesondere mit druckluft betriebene spruehpistole
US3999592A (en) * 1975-04-21 1976-12-28 The Quaker Oats Company Apparatus and method for manufacturing cores and molds with static mixer stage
US4026967A (en) * 1976-06-25 1977-05-31 E. I. Du Pont De Nemours And Company Process for making grafted polymeric material
US4123178A (en) * 1977-03-21 1978-10-31 General Signal Corporation In-line blender
US4109318A (en) * 1977-04-15 1978-08-22 General Signal Corporation Fluid injection and sampling device for an in-line blender
US4179222A (en) * 1978-01-11 1979-12-18 Systematix Controls, Inc. Flow turbulence generating and mixing device
US4216085A (en) * 1978-08-18 1980-08-05 Iowa Beef Processors, Inc. Flotation method and apparatus
US4208136A (en) * 1978-12-01 1980-06-17 Komax Systems, Inc. Static mixing apparatus
US4505957A (en) * 1979-07-19 1985-03-19 Nordson Corporation Coating by atomization of high (i.e., about 70-99% by weight) solids film-forming compositions
US4284105A (en) * 1979-11-09 1981-08-18 Union Carbide Corporation Discrete spiral flow imparting device
US4281935A (en) * 1980-01-25 1981-08-04 E. I. Du Pont De Nemours And Company Additive injection valve
US4404173A (en) * 1980-09-24 1983-09-13 Unc Recovery Corporation Apparatus for contacting substantially immiscible liquids
US4439405A (en) * 1980-09-24 1984-03-27 Unc Recovery Corporation Method for varying the mixing time and proportions in the contacting of substantially immiscible liquids
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SE372426B (enrdf_load_stackoverflow) 1974-12-23

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