US3918688A - Static mixing device - Google Patents

Static mixing device Download PDF

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Publication number
US3918688A
US3918688A US455346A US45534674A US3918688A US 3918688 A US3918688 A US 3918688A US 455346 A US455346 A US 455346A US 45534674 A US45534674 A US 45534674A US 3918688 A US3918688 A US 3918688A
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US
United States
Prior art keywords
insert
ducts
adjacent
mixing device
jacket
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.)
Expired - Lifetime
Application number
US455346A
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English (en)
Inventor
Max Huber
Gerhard Schutz
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Sulzer AG
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Sulzer AG
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Filing date
Publication date
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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
    • B01F25/432—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction with means for dividing the material flow into separate sub-flows and for repositioning and recombining these sub-flows; Cross-mixing, e.g. conducting the outer layer of the material nearer to the axis of the tube or vice-versa
    • B01F25/4322—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction with means for dividing the material flow into separate sub-flows and for repositioning and recombining these sub-flows; Cross-mixing, e.g. conducting the outer layer of the material nearer to the axis of the tube or vice-versa essentially composed of stacks of sheets, e.g. corrugated sheets
    • 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
    • B01F25/432—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction with means for dividing the material flow into separate sub-flows and for repositioning and recombining these sub-flows; Cross-mixing, e.g. conducting the outer layer of the material nearer to the axis of the tube or vice-versa

Definitions

  • mixing zone is provided with a plate-like intermediate element. or the like, between each pair of adjacent corrugated plates to close off the adjacent flow ducts in the middle zones of the respective layers while leaving the edge zones open at least partially.
  • This latter construction is to avoid a concentration gradient over the mixing zone and to provide a uniform distribution of the flowing media at the exit end of the zone.
  • This invention relates to a static mixing device particularly for flowable media.
  • the mixing device is made up of a plurality of lamellas or layers which are placed adjacent each other in parallel relation to define inclined flow paths in each layer which are open to the flow paths in at least one adjacent layer.
  • These mixing devices generally employ corrugated sheets to define the respective layers although other constructions may also be used.
  • two or more flowable media can be introduced into one end of the mixing device on an individual basis and mixed within the device before exiting from an opposite end.
  • a flowing medium for example waste water
  • a flowing medium for example waste water
  • the flow paths at the edge zones of the mixing device are greatly depleted with respect to one of the media, particularly in the case of a large tube diameter.
  • a concentration gradient which may be considerable in some cases, thus occurs between the two media from the edge zones of the mixing device to the middle zone.
  • the edge zones of the mixing device in the case indicated will carry practically only waste water.
  • the edge zones do not participate in the mixing process.
  • the mixing devices are used in a chamber formed by a jacket tube to mix hot and cold air for airconditioning purposes, the air currents usually enter the insert in two layers and the same problems arise as above.
  • the invention provides a static mixing device for flowing media which comprises a jacket having a wall defining a flow duct, at least one insert made up of a plurality of contacting layers having parallel flow ducts disposed in inclined relation to carry out a mixing operation and a second insert of similar construction for coarse mixing of the flowing media prior to entry into the first insert.
  • the contacting layers of the downstream insert or inserts are each formed to orient the flow ducts in one layer in an inclined relation relative to the ducts in an adjacent layer and to open the ducts in adjacent layers at least partially to each other.
  • the upstream insert has the same type of layers; however, while the ducts in adjacent layers are at least partially open to each other in an edge zone adjacent the jacket wall, these ducts are closed to each other in a middle zone.
  • a plate-like intermediate element is disposed between each pair of adjacent layers to block communication between the opposed flow ducts.
  • the intermediate elements are of rectangular shape and are of the same width as the associated adjacent layer and have apertures following a polygonal course on the side adjacent the jacket tube.
  • each intermediate element is centered inside the jacket tube at least at two corners on opposite sides of the edge zones.
  • the intermediate elements may, for example, have triangular apertures in the edge zones and, for example, may be formed of sheet-metal or plastic.
  • the intermediate elements may be constructed of a rectangular shape having a smaller width than the associated adjacent layer and can be centered in the jacket tube, for example, by means of connecting members.
  • the mixing insert which carries out the coarse mixing may be constructed as a separate insert ie as a unitary body for use as the mixing device per se. If a further fine mixing is required, such a mixing device may be directly followed by another mixing device in which the layers are at least partially open to one another throughout and which is disposed with a offset from the device for coarse mixing.
  • the insert for fine mixing and the insert for corase mixing can be constructed as a unitary component with contacting layers constructed in the form of continuous surface elements and with an intermediate element disposed between each pair of contacting layers only in the corase mixing part.
  • the mixing device avoids an unfavorable concentration gradient for the mixing of the flowing media from the edge zones to the middle zone while ensuring that the media leaving the corase-mixing device are uniformly distributed over the tube cross-section on flowing into the mixing device used for fine distribution.
  • the fine distribution of the media may, in very favorable cases, be effected by turbulence and diffusion in the empty tube following the insert.
  • the layers of the insert consist of corrugated sheets which contact one another with the corrugations of adjacent sheets situated at an angle to the longitudinal axis of the mixing device, as considered in the direction of flow of the flowing media.
  • the individual layers of an insert may be formed from plane surface elements to which sheet-like guide elements inclined at an angle are connected so that the individual flow ducts are bounded by the plane surface elements and by each pair of parallel adjacent guide elements.
  • the guide elements may extend in the form of a fishbone on a layer.
  • flowing media denotes liquids, gases or gas mixtures, low-viscosity or high-viscosity media and flowable solid particles.
  • the device may, for example, carry two or more liquids in co-current, gases or gas mixtures, a liquid and a gas, or a liquid and a solid reduced to powder form.
  • FIG. 1 diagrammatically illustrates a cross-sectional view of one embodiment of a mixing device according to the invention
  • FIG. 2 illustrates a perspective view of a second embodiment according to the invention.
  • FIG. 3 illustrates an exploded view ofa portion of the mixing device of FIG. 1.
  • the mixing device includes a horizontally extending jacket 1 having a wall defining a flow duct or passage for flowable media, for example, a flow of hot air L and a flow of cold air L
  • a pair of inserts 5a, 5b are placed consecutively within the jacket 1 in the direction of flow.
  • Each insert 5a, 5b consists of a plurality of contacting layers 6 formed from corrugated sheets and sandwiched together within the mixing chamber defined by the jacket 1.
  • the crests. of the corrugations in the layers 6 which are disposed in planes parallel to the drawing plane of FIG. 1 have the references 6a and 6b, 6a denoting the layer disposed in the drawing plane of FIG. 1 and 6b the layer situated behind the same.
  • Open flow ducts 7 are formed between the corrugation crests and cross one another as a result of the fact that adjacent layers 6 are inclined to one another.
  • the upstream insert 5a serves for corase mixing and is provided with closed plate-like intermediate elements 8 disposed between pairs of adjacent layers 6. As particularly shown in FIG. 3, the individual intermediate elements 8 have triangular apertures 8a in their edge zones 9 adjoining the jacket wall. These apertures 80 are so formed that all the flow ducts 7 terminating at the jacket wall are open to one another. This obviates the formation of dead passages for the flow.
  • the downstream insert 5b serves for fine mixing and is of a construction apart from the absence of intermediate elements identical to the insert 5b. This insert 5b is turned through 90 in the direction of its individual layers 6 with respect to the upstream element 5a.
  • the compact layers of cold air L flowing from left to right into the mixing device, and of the hot air L flowing in the same direction, are coarsely mixed with one another in the upstream insert 5a before en tering the insert 5!), which serves for fine mixing.
  • the layers are thus distributed relatively uniformly over the entire cross-section of the insert 5b at that time. Any differences in the concentration of cold air and hot air which may exist over the cross-section are at least substantially completely eliminated in the insert 5b so that the mixed air L flowing into a room (not shown) for air conditioning has a unitary temperature.
  • the inserts 5a, 5b are constructed from common layers which are continuous in the direction of flow and between which intermediate elements 8 are inserted in the upstream part to'form.
  • the jacket 1 is of rectangular cross-sectional shape.
  • the mixing device of the invention can be used for various sized jackets, and particularly for jackets of large diameters of one meter or more.
  • the corase mixing insert which may be used of itself or incombination with one or more fine mixing inserts, ensures a uniform distribution of the introduced flowing media at the exit side of the insert.
  • a jacket having a wall defining a flow passage for the flowing media
  • At least one insert in said jacket comprising a plurality of contacting layers, each layer including a plurality of parallel flow ducts, said ducts in one layer being inclined relative to said ducts in an adjacent layer, and said ducts in adjacent layers being at least partially open to each other; and
  • a second insert for coarsemixing in said jacket com- 1 prising a plurality of contacting layers each including a plurality of parallel inclined flow ducts, said ducts in adjacent layers being at least partially open to each other in an edge zone adjacent said'jacket wall and closed to each other in a middle zone of said second insert, said second insert being dis posed upstream of said firstinsert.
  • a static mixing device as set forth in clairnl which further comprises a plate-like intermediate element disposed between each pair of adjacent layers in said sec-.
  • each intermediate element is' of rectangular shape of the same width as an adjacent layer and has apertures following a polygonal course on a side adjacent said jacket wall, each said intermediate element being centered inside said jacket wall on opposite sides of said edge zones at least at two corners.
  • first insert and which includes an intermediate element.
  • a static mixing device for flowing media comprising 1 a jacket having a wall defining a flow passage for the flowing media, and
  • an insert in said jacket comprising a pluralityof conpair of contacting layers only in tacting layers, each layer including a plurality of parallel flow ducts, said ducts in one layer being inclined relative to said ducts in an adjacent layer,
  • a static mixing device for flowing media comprising 9.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Accessories For Mixers (AREA)
US455346A 1973-04-18 1974-03-27 Static mixing device Expired - Lifetime US3918688A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH558973A CH563802A5 (xx) 1973-04-18 1973-04-18

Publications (1)

Publication Number Publication Date
US3918688A true US3918688A (en) 1975-11-11

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ID=4296113

Family Applications (1)

Application Number Title Priority Date Filing Date
US455346A Expired - Lifetime US3918688A (en) 1973-04-18 1974-03-27 Static mixing device

Country Status (21)

Country Link
US (1) US3918688A (xx)
JP (1) JPS49130565A (xx)
AR (1) AR198032A1 (xx)
AU (1) AU468964B2 (xx)
BE (1) BE813816A (xx)
BR (1) BR7403073D0 (xx)
CA (1) CA996098A (xx)
CH (1) CH563802A5 (xx)
CS (1) CS184824B2 (xx)
DE (1) DE2320741C2 (xx)
DK (1) DK149209C (xx)
ES (1) ES439386A1 (xx)
FR (1) FR2226202B1 (xx)
GB (1) GB1422903A (xx)
IE (1) IE39372B1 (xx)
IT (1) IT1006483B (xx)
LU (1) LU69862A1 (xx)
NL (1) NL173246C (xx)
PL (1) PL88743B1 (xx)
SE (1) SE403713B (xx)
ZA (1) ZA742345B (xx)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4183681A (en) * 1978-05-19 1980-01-15 Exxon Research & Engineering Co. Emulsion preparation method using a packed tube emulsifier
US4296204A (en) * 1978-01-25 1981-10-20 Merck & Co., Inc. Use of motionless mixer as cell culture propagator
DE3136138A1 (de) * 1980-10-01 1982-04-29 MTA Müszaki Kémiai Kutató Intézet, Veszprém Verfahren und vorrichtung zum kontinuierlichen loesen beziehungsweise aufschliessen und weiterverarbeiten des aluminiumgehaltes von aluminiumhaltigen rohstoffen nach dem bayer-verfahren
US4415670A (en) * 1980-07-07 1983-11-15 Merck & Co., Inc. Motionless mixer as cell culture propagator
US4744928A (en) * 1981-07-30 1988-05-17 Sulzer Brothers Limited Regular packing for countercurrent mass and direct heat transfer columns
EP0270050A2 (en) 1986-12-01 1988-06-08 Glitsch, Inc. Structured tower packing
US4902418A (en) * 1985-11-22 1990-02-20 Sulzer Brothers Limited Element having a porous wall
US4950430A (en) * 1986-12-01 1990-08-21 Glitsch, Inc. Structured tower packing
US5250234A (en) * 1992-10-08 1993-10-05 Koch Engineering Company, Inc. Liquid distributor apparatus and method for high viscosity liquids
US5380088A (en) * 1991-07-30 1995-01-10 Sulzer Brothers Limited Mixing device for small fluid quantities
US5407274A (en) * 1992-11-27 1995-04-18 Texaco Inc. Device to equalize steam quality in pipe networks
US5476783A (en) * 1992-03-23 1995-12-19 Koch Engineering Company, Inc. Bioreactor method of culturing and propagating cells with a woven motionless mixing element
US5605399A (en) * 1995-10-17 1997-02-25 Komax Systems, Inc. Progressive motionless mixer
US5636981A (en) * 1994-05-19 1997-06-10 Lilly Engineering Company Fuel oil burner
US5709468A (en) * 1992-11-27 1998-01-20 Texaco Group, Inc. Method for equalizing steam quality in pipe networks
EP0831063A2 (en) * 1996-09-20 1998-03-25 Eiichi Sugiura Device for releasing fine bubbles of gas into a liquid
EP1153651A1 (de) * 2000-05-08 2001-11-14 Sulzer Chemtech AG Statischer Mischer mit profilierten Lagen
WO2002030551A1 (en) * 2000-10-11 2002-04-18 The Procter & Gamble Company Apparatus for in-line mixing and process of making such apparatus
US6409157B1 (en) * 1997-12-22 2002-06-25 Munters Ab Air treatment unit
US20030058737A1 (en) * 2001-09-25 2003-03-27 Berry Jonathan Dwight Mixer/flow conditioner
US6575617B2 (en) 2000-05-08 2003-06-10 Sulzer Chemtech Ag Static mixer with profiled layers
US6615507B2 (en) * 2000-06-19 2003-09-09 Balcke-Durr Energietechnik Gmbh Mixer for mixing gases and other newton liquids
US6844377B1 (en) * 1998-09-30 2005-01-18 Basf Aktiengesellschaft Polymer particles containing dye
US20070263486A1 (en) * 2006-05-15 2007-11-15 Sulzer Chemtech Ag Static mixer
US20090301973A1 (en) * 2008-06-09 2009-12-10 Hanna Jerry Water reaction tank
US20110310697A1 (en) * 2010-06-22 2011-12-22 Sebastian Hirschberg Dust mixing device
EP2801374A1 (en) 2013-05-08 2014-11-12 Sulzer Chemtech AG An apparatus for germ reduction of a fluid and a process for use thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE432059B (sv) * 1980-04-11 1984-03-19 Munters Ab Carl Blandningsanordning for blandning av strommande medier innefattande minst tva system av atskilda genomstromningskanaler

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3618778A (en) * 1969-05-22 1971-11-09 Ethyl Corp Liquid-treating apparatus
US3785620A (en) * 1971-04-29 1974-01-15 Sulzer Ag Mixing apparatus and method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2546515A (en) * 1947-01-29 1951-03-27 George T Macbeth Mixer for gaseous or vaporized materials
NL131987C (xx) * 1962-07-31
AT260184B (de) * 1964-07-21 1968-02-12 Voest Ag Vorrichtung zum Mischen fließfähiger Medien, insbesondere Gase und/oder Flüssigkeiten
DE1901281C3 (de) * 1969-01-11 1974-11-07 Helmut Dr. 8901 Bobingen Schaefer Vorrichtung zum Mischen strömender Medien

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3618778A (en) * 1969-05-22 1971-11-09 Ethyl Corp Liquid-treating apparatus
US3785620A (en) * 1971-04-29 1974-01-15 Sulzer Ag Mixing apparatus and method

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4296204A (en) * 1978-01-25 1981-10-20 Merck & Co., Inc. Use of motionless mixer as cell culture propagator
US4183681A (en) * 1978-05-19 1980-01-15 Exxon Research & Engineering Co. Emulsion preparation method using a packed tube emulsifier
US4415670A (en) * 1980-07-07 1983-11-15 Merck & Co., Inc. Motionless mixer as cell culture propagator
DE3136138A1 (de) * 1980-10-01 1982-04-29 MTA Müszaki Kémiai Kutató Intézet, Veszprém Verfahren und vorrichtung zum kontinuierlichen loesen beziehungsweise aufschliessen und weiterverarbeiten des aluminiumgehaltes von aluminiumhaltigen rohstoffen nach dem bayer-verfahren
US4744928A (en) * 1981-07-30 1988-05-17 Sulzer Brothers Limited Regular packing for countercurrent mass and direct heat transfer columns
US4902418A (en) * 1985-11-22 1990-02-20 Sulzer Brothers Limited Element having a porous wall
EP0270050A2 (en) 1986-12-01 1988-06-08 Glitsch, Inc. Structured tower packing
US4950430A (en) * 1986-12-01 1990-08-21 Glitsch, Inc. Structured tower packing
US5380088A (en) * 1991-07-30 1995-01-10 Sulzer Brothers Limited Mixing device for small fluid quantities
US5476783A (en) * 1992-03-23 1995-12-19 Koch Engineering Company, Inc. Bioreactor method of culturing and propagating cells with a woven motionless mixing element
US5250234A (en) * 1992-10-08 1993-10-05 Koch Engineering Company, Inc. Liquid distributor apparatus and method for high viscosity liquids
US5407274A (en) * 1992-11-27 1995-04-18 Texaco Inc. Device to equalize steam quality in pipe networks
US5709468A (en) * 1992-11-27 1998-01-20 Texaco Group, Inc. Method for equalizing steam quality in pipe networks
US5636981A (en) * 1994-05-19 1997-06-10 Lilly Engineering Company Fuel oil burner
US5605399A (en) * 1995-10-17 1997-02-25 Komax Systems, Inc. Progressive motionless mixer
EP0831063A2 (en) * 1996-09-20 1998-03-25 Eiichi Sugiura Device for releasing fine bubbles of gas into a liquid
EP0831063A3 (en) * 1996-09-20 1998-07-22 Eiichi Sugiura Device for releasing fine bubbles of gas into a liquid
US5938982A (en) * 1996-09-20 1999-08-17 Sugiura; Eiichi Device for fining bubbles of gas contained in liquid
US6409157B1 (en) * 1997-12-22 2002-06-25 Munters Ab Air treatment unit
US6844377B1 (en) * 1998-09-30 2005-01-18 Basf Aktiengesellschaft Polymer particles containing dye
EP1153651A1 (de) * 2000-05-08 2001-11-14 Sulzer Chemtech AG Statischer Mischer mit profilierten Lagen
US6575617B2 (en) 2000-05-08 2003-06-10 Sulzer Chemtech Ag Static mixer with profiled layers
US6615507B2 (en) * 2000-06-19 2003-09-09 Balcke-Durr Energietechnik Gmbh Mixer for mixing gases and other newton liquids
US20020064087A1 (en) * 2000-10-11 2002-05-30 The Procter & Gamble Company Apparatus for in-line mixing and process of making such apparatus
US6550960B2 (en) * 2000-10-11 2003-04-22 The Procter & Gamble Company Apparatus for in-line mixing and process of making such apparatus
WO2002030551A1 (en) * 2000-10-11 2002-04-18 The Procter & Gamble Company Apparatus for in-line mixing and process of making such apparatus
US20030058737A1 (en) * 2001-09-25 2003-03-27 Berry Jonathan Dwight Mixer/flow conditioner
US20070263486A1 (en) * 2006-05-15 2007-11-15 Sulzer Chemtech Ag Static mixer
US8061890B2 (en) * 2006-05-15 2011-11-22 Sulzer Chemtech Ag Static mixer
US20090301973A1 (en) * 2008-06-09 2009-12-10 Hanna Jerry Water reaction tank
US8062518B2 (en) * 2008-06-09 2011-11-22 Clearflow Enviro Systems Group Inc. Water reaction tank
US8313655B2 (en) 2008-06-09 2012-11-20 Clearflow Enviro Systems Group Inc. Water reaction tank
US20110310697A1 (en) * 2010-06-22 2011-12-22 Sebastian Hirschberg Dust mixing device
EP2801374A1 (en) 2013-05-08 2014-11-12 Sulzer Chemtech AG An apparatus for germ reduction of a fluid and a process for use thereof
WO2014180799A1 (en) 2013-05-08 2014-11-13 Sulzer Chemtech Ag An apparatus for germ reduction of a fluid and a process for use thereof
US10315937B2 (en) 2013-05-08 2019-06-11 Sulzer Chemtech Ag Apparatus for germ reduction of a fluid and a process for use thereof

Also Published As

Publication number Publication date
AR198032A1 (es) 1974-05-24
DK149209C (da) 1986-08-11
DE2320741C2 (de) 1982-06-03
JPS49130565A (xx) 1974-12-13
GB1422903A (en) 1976-01-28
CH563802A5 (xx) 1975-07-15
SE403713B (sv) 1978-09-04
NL173246C (nl) 1984-01-02
BR7403073D0 (pt) 1974-11-19
FR2226202A1 (xx) 1974-11-15
IT1006483B (it) 1976-09-30
FR2226202B1 (xx) 1977-10-07
DK149209B (da) 1986-03-17
IE39372B1 (en) 1978-09-27
LU69862A1 (xx) 1974-08-06
NL7404069A (xx) 1974-10-22
IE39372L (en) 1974-10-18
ES439386A1 (es) 1977-06-01
CA996098A (en) 1976-08-31
CS184824B2 (en) 1978-09-15
AU6794474A (en) 1975-10-16
DE2320741A1 (de) 1974-11-14
PL88743B1 (xx) 1976-09-30
ZA742345B (en) 1975-10-29
BE813816A (fr) 1974-10-17
AU468964B2 (en) 1976-01-29

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