EP1278593A1 - Element de melange statique - Google Patents

Element de melange statique

Info

Publication number
EP1278593A1
EP1278593A1 EP01940350A EP01940350A EP1278593A1 EP 1278593 A1 EP1278593 A1 EP 1278593A1 EP 01940350 A EP01940350 A EP 01940350A EP 01940350 A EP01940350 A EP 01940350A EP 1278593 A1 EP1278593 A1 EP 1278593A1
Authority
EP
European Patent Office
Prior art keywords
mixing
media
flow
deflection surface
static mixing
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.)
Granted
Application number
EP01940350A
Other languages
German (de)
English (en)
Other versions
EP1278593B1 (fr
Inventor
Manfred Schauerte
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.)
Tracto Technik GmbH and Co KG
Original Assignee
Tracto Technik GmbH and Co KG
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 Tracto Technik GmbH and Co KG filed Critical Tracto Technik GmbH and Co KG
Publication of EP1278593A1 publication Critical patent/EP1278593A1/fr
Application granted granted Critical
Publication of EP1278593B1 publication Critical patent/EP1278593B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B01F25/40—Static mixers
    • B01F25/45—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads
    • 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
    • B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
    • 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
    • B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
    • B01F25/4334—Mixers with a converging cross-section
    • 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
    • B01F25/45—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads
    • B01F25/452—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces
    • B01F25/4521—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces the components being pressed through orifices in elements, e.g. flat plates or cylinders, which obstruct the whole diameter of the tube
    • 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
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/834—Mixing in several steps, e.g. successive steps
    • 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
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/81—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles

Definitions

  • the invention relates to a static mixing system for homogenizing and dispersing liquid, gaseous or powdery media and claims the priority of German patent application 100 19 759.0-23, to which reference is made in terms of content.
  • Homogenizing and dispersing media of the same or different aggregate states as a prerequisite for a large number of process steps in chemical or engineering technology are subject to increasingly stringent requirements, which are usually met with the help of complex static or dynamic mixing systems.
  • Horizontal drilling also requires the mixing of a liquid with a powdery substance or a liquid or a suspension if, for example, a bentonite-water suspension is to be used as drilling or rinsing liquid to facilitate and improve the drilling process.
  • a bentonite-water suspension is to be used as drilling or rinsing liquid to facilitate and improve the drilling process.
  • Such a suspension keeps the cuttings in suspension, lubricates the pipe string when it is pulled in and protects it against the surrounding soil after a certain hardening phase.
  • Additives such as soda ash or polymers can be added to vary the property of the suspension.
  • drilling fluids are mixed in a separate storage tank by an agitator working in this tank, i.e. a dynamic mixer, or by a high-speed pump.
  • Static mixing systems are also known which, in contrast to dynamic systems, have no agitator and require less space.
  • a static mixer as it is known, for example, from "Weighing + dosing" 3/1997 pages 23 to 26, usually consists of a plurality of different individual mixing elements connected in series, which are used with the aid of an adapter in a supply or discharge system can.
  • Each of these mixing elements has one or more deflection surfaces, which are possibly measured by one or more passages.
  • the deflecting surfaces following one another either within a mixing element or in downstream mixing elements are always inclined at small angles to one another and also point with respect to the direction of flow of the flow in the line Medium coincidentally a small one; of 90 ° different inclination angles.
  • the deflecting surfaces which are at a special axis angle to one another and to the direction of flow, produce a positive guidance of the flow, so that its direction of flow rotates several times.
  • the passages which possibly pass through the deflecting surfaces also run at an angle to one another and to the deflecting surfaces, so that both a distribution of the flow and a multiple change in the flow direction take place.
  • the individual flows are brought together again at other deflection surfaces.
  • the invention is therefore based on the object of providing a static mixer which enables efficient homogenization and dispersion of different media with structurally simple mixing elements which are also inexpensive to produce and easy to clean.
  • the object is achieved with a mixing element with at least one deflection surface, which is oriented at an angle of 70 to 110 ° to the main flow direction of the media in the flowed-through line.
  • the invention is based on the idea that when the media collide with the deflection surface that is only slightly inclined to the direction of flow and the edges flow around it, shear forces arise which cause the media to swirl and mix.
  • the particular advantage of the mixing element according to the invention lies in its simple construction, which can be manufactured inexpensively and without special machines. Another advantage is that due to the special orientation of the deflecting surface there are no acute angles between the surface and the surrounding housing or the wall. This makes cleaning the mixing element considerably easier.
  • the deflection surface which is only slightly inclined to the direction of flow, enables very good homogenization of the media to be mixed, which can be further improved by a plurality of deflection surfaces connected in series.
  • the deflection surface is arranged at an angle of 90 ° to the direction of flow of the media, i.e. it is perpendicular to the direction of flow.
  • the shape of the cross section of the deflecting surface can essentially correspond to the cross sectional outline of the flow through the line.
  • their diameter is advantageously smaller than that of the line, so that between the line and the Deflection surface creates at least one passage for the medium deflected from the deflection surface.
  • the deflection surface can be fastened directly to the flow through the line or to a housing of a mixing element to be inserted into the line via fastening means.
  • the housing of the mixing element can advantageously be designed such that the side surfaces of the housing lying behind the deflection surface in the direction of flow are used to guide the medium.
  • they can run in a funnel-like manner in order to narrow to a passage opening leading to a deflection surface of a downstream deflection surface or located in the same mixing system.
  • the deflection surface can be provided with openings which enable the medium striking the surface to be divided. An improvement in the homogenization can thus be achieved without, however, cleaning the system being considerably more difficult.
  • the individual mixing elements can be connected in series in a mixing system. It can also be advantageous Mixing elements in parallel next to each other if, for example, the flow rate of media is to be increased.
  • the mixing element according to the invention can be used for homogenizing and mixing gases, liquids, suspensions or dispersions. It can thus be used in a variety of different methods and devices, e.g. from the areas of chemical or process engineering as well as in the plastics industry, water treatment or in the food industry.
  • Bentonite-water suspensions can be used, for example, for horizontal or vertical drilling.
  • Fig. 1 shows a longitudinal section through a mixing system consisting of several individual elements according to the invention connected in series and
  • FIG. 2 shows a cross section through a mixing element in plane A-A of FIG. 1.
  • a single element 1 of the mixing system consists of a housing 2 with two inclined surfaces 3 and 4, which narrow in a funnel shape to a through opening 5. They allow the medium flowing in the direction of the arrow through the inlet opening 6 into the mixing system.
  • Parts 13a to d represent tie rods which pull the head piece 12 and the end piece 17 against one another and thus clamp the deflection surfaces 9 through the housing 2.
  • a mixing system is composed of 3 individual elements, each with a deflection surface and a head piece 12 and an end piece 17. These are sealed off from one another by seals 20. This arrangement can be supplemented with other mixing elements.
  • the head piece has an input opening 6 which opens onto the first deflection surface worked as part of the head piece.
  • the opening is funnel-shaped.
  • End piece 17 on the other hand, does not have a deflecting surface, but rather releases the medium through the outlet opening 16.
  • End piece 17 and head piece 12 are provided with a thread (not shown here) into which common pipe screw connections can be screwed.
  • the media flow into the head piece 12 via the inlet opening 6 and impact on the deflection surface 9. There they are deflected and flow through the passages 11a, 11b, 11c into the mixing space 19. They are partly guided along the inclined surfaces 3 and 4 , The media then flow through the passage opening 5 onto a further deflection surface. They flow through a second mixing element in the manner just described.
EP01940350A 2000-04-20 2001-04-20 Element de melange statique Expired - Lifetime EP1278593B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10019759 2000-04-20
DE10019759A DE10019759C2 (de) 2000-04-20 2000-04-20 Statisches Mischsystem
PCT/EP2001/004516 WO2001080985A1 (fr) 2000-04-20 2001-04-20 Element de melange statique

Publications (2)

Publication Number Publication Date
EP1278593A1 true EP1278593A1 (fr) 2003-01-29
EP1278593B1 EP1278593B1 (fr) 2005-03-23

Family

ID=7639564

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01940350A Expired - Lifetime EP1278593B1 (fr) 2000-04-20 2001-04-20 Element de melange statique

Country Status (6)

Country Link
US (2) US20040100864A1 (fr)
EP (1) EP1278593B1 (fr)
AT (1) ATE291486T1 (fr)
AU (2) AU7395701A (fr)
DE (2) DE10019759C2 (fr)
WO (1) WO2001080985A1 (fr)

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Also Published As

Publication number Publication date
DE50105692D1 (de) 2005-04-28
US20040100864A1 (en) 2004-05-27
DE10019759C2 (de) 2003-04-30
ATE291486T1 (de) 2005-04-15
AU2001273957B2 (en) 2005-03-24
DE10019759A1 (de) 2001-10-31
US20070211570A1 (en) 2007-09-13
US7878705B2 (en) 2011-02-01
AU7395701A (en) 2001-11-07
EP1278593B1 (fr) 2005-03-23
WO2001080985A1 (fr) 2001-11-01

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