WO2006007609A1 - Verfahren zum mischen, vorrichtung hierzu und deren verwendung - Google Patents
Verfahren zum mischen, vorrichtung hierzu und deren verwendung Download PDFInfo
- Publication number
- WO2006007609A1 WO2006007609A1 PCT/AT2005/000229 AT2005000229W WO2006007609A1 WO 2006007609 A1 WO2006007609 A1 WO 2006007609A1 AT 2005000229 W AT2005000229 W AT 2005000229W WO 2006007609 A1 WO2006007609 A1 WO 2006007609A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- suspension
- stator
- pulp
- rotor
- rotary mixer
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/50—Pipe mixers, i.e. mixers wherein the materials to be mixed flow continuously through pipes, e.g. column mixers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/50—Mixing liquids with solids
- B01F23/53—Mixing liquids with solids using driven stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
- B01F27/272—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed axially between the surfaces of the rotor and the stator, e.g. the stator rotor system formed by conical or cylindrical surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/07—Stirrers characterised by their mounting on the shaft
- B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
- B01F27/0721—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis parallel with respect to the rotating axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/07—Stirrers characterised by their mounting on the shaft
- B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
- B01F27/0724—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis directly mounted on the rotating axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
- B01F27/271—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator
- B01F27/2712—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator provided with ribs, ridges or grooves on one surface
Definitions
- the invention relates to a method for continuously mixing and / or fluidizing a suspension or a pulp and / or for mixing gaseous and / or liquid media in a suspension or a pulp, in particular in a suspension of a fibrous material with fluids, wherein the Suspension or pulp is exposed in a rotary mixer over the circumference of the rotary mixer of different sizes shear forces, and a device for carrying out the method and further use of the device.
- a rotary mixer for suspensions or pulps in which a rotor is arranged centrally in a stator, wherein rib-like projections are provided in a gap between a cross-sectionally polygonal rotor and stator.
- the object of the invention is to obviate these disadvantages and difficulties, and has set itself the task of a method of the type described above and a device for optimum continuous mixing and / or fluidization of a suspension or pulp and / or for mixing in gaseous and / or liquid media To create a suspension or a pulp, with which it is possible to accomplish the mixing process or the mixing efficiently and possibly over a longer period of time with little effort.
- this oversized dimensions of the device serving for this purpose or inadmissibly high peripheral speeds should be avoided.
- This object of the invention is achieved in a method of the type described above in that the suspension or the pulp is additionally moved from the inlet to the outlet of the rotary mixer along its length or longitudinal axis.
- the process according to the invention allows a broad application, in particular for pulp suspensions with a consistency between 4 and 20%, in particular between 8 and 15%.
- the longitudinal axis of the rotor is arranged parallel to the longitudinal axis of the stator.
- a preferred embodiment is characterized in that an eccentricity between the longitudinal axis of the stator and the longitudinal axis of the rotor in the range of 1/200 to 1/2 of the inner diameter of the drum of the stator.
- the ratio of the outer diameter of the rotor to the inner diameter of the drum of the stator in the range of 1: 1.1 to 1: 5, expediently the height of the flow breaker in the range between 1/50 to 1 / 1.4 the outer diameter of the rotor is located.
- a further preferred variant is characterized in that the width of the flow breaker is in the range between 1/100 to 10/1 whose height.
- stator are substantially transversely to the circumferential direction extending flow breaker and the rotor is provided substantially transversely to the circumferential direction extending driver, wherein advantageously the flow breaker and / or the drivers extend continuously over the length of the rotary mixer from the inlet to the outlet.
- At least some flow breakers and / or drivers extend only over partial regions of the length of the rotary mixer and are preferably arranged offset to one another in the circumferential direction.
- the inlet nozzle and / or the outlet nozzle can (can) be aligned radially to the longitudinal axis of the stator or in the direction of the longitudinal axis of the stator. If an admixture of a medium, so opens a supply line for the medium in the stator in the region of the inlet nozzle or multiple media inlet nozzle distributed over the length of the mixer.
- a gap in the radial direction is provided between the flow breakers of the stator and the drivers of the rotor, which at its narrowest point in the range of 0.02 to 80 and at its widest point from 1 to 90, each in percent of the inner diameter of Stators is.
- Use of the device according to the invention is particularly advantageous for the pulp industry, such as for producing multiphase mixtures mainly consisting of a suspension of pulp, water and chemicals (in liquid, gaseous or solid state or for producing a multiphase mixture of waste paper and water.
- Fig. 1 shows a view of a rotary mixer.
- Fig. 2 shows a guided according to the line II-II of FIG. 1 section.
- a substantially cylindrical shaped drum 1 which serves as a stator 2 of a rotary mixer, a rotatably mounted about its longitudinal axis 3 rotor 4 is provided, the bearing 5 are arranged on the drum 1 frontally closing walls 6.
- a drive shaft 7 of the rotor 4 extends beyond a bearing 5 and is driven by a motor 8.
- the rotor 4 can also be designed as a single-sided, cantilevered unit.
- an inlet connection 11 for a suspension or pulp and an outlet connection 12 are provided for the latter in the direction of the longitudinal axis 9 of the stator 2 at a distance of 10 from each other.
- a supply line 13 for a zuzumischendes medium such as a gas or a liquid.
- the inlet and outlet openings 11 ', 12' for the suspension or pulp and chemicals 4 are arranged either radially on the stator 2 or parallel to the longitudinal axis 3 of the rotor 4.
- flow baffles 15 extending essentially transversely to the circumferential direction of the drum 1 are arranged.
- the rotor 4 in turn has substantially transversely to the circumferential direction extending driver
- the axis 3 of the rotor 4 is arranged eccentrically with respect to the axis 9 of the stator 2 by the dimension e. Upon rotation of the rotor 4, a gap is thereby formed between the circle of the driver 16 and the flow breakers 15, which at its narrowest point
- 17 has a thickness of 0.02 to 80 and at its widest point 18 has a thickness of 1 to 90, each in percent of the inner diameter D of the stator.
- Both the flow breakers 15 and the drivers 16 need not span the entire length 19 of the rotary mixer, i. the drum 1, extend continuously in one piece; they may be formed of several parts lying one behind the other, which are possibly also arranged offset in the circumferential direction of the rotor 4 and in the circumferential direction of the stator 2 to each other.
- the width B of the flow breaker 15 is advantageously in the range between 1/100 to 10/1 whose height H.
- the number and geometry of the flow breaker or driver on the rotor or stator is freely selectable.
- the driver 16 and flow breaker 15 may be provided in a freely selectable number of different design.
- the function of the rotary mixer is largely independent of the position shown in FIG.
- Characteristic of the invention is the eccentric arrangement of the rotor 4 and the axial flow of the suspension or the pulp.
- Another characteristic is the very efficient interference, i. especially in the mixing of gases, a very homogeneous, fine-pored dispersion is achieved, which finely distributes the gaseous chemicals directly to the fibers of the suspension and there enables the reaction with the pulp.
- a special application of the rotary mixer is primarily for fiber suspensions, e.g. Pulp having a consistency of 4 to 20% with other fluids (bleaching chemicals), e.g. H2O2, C1O2, NaOH, 03, 02, Cl, N, etc., as well as further for transport-limited reactions for the production of viscose or mash by mixing solvents or Aushärtesubstanzen.
- fiber suspensions e.g. Pulp having a consistency of 4 to 20% with other fluids (bleaching chemicals), e.g. H2O2, C1O2, NaOH, 03, 02, Cl, N, etc.
- Ozone bleaching stage The following describes special applications: Ozone bleaching stage:
- Pulp is conveyed through a medium-consistency pump under a pressure of 1 to 20 barü to the rotary mixer.
- the ozone gas is also added to the rotary mixer.
- the pulp is fluidized very quickly and at the same time the ozone gas is mixed into the pulp suspension in a very homogeneous and fine-pored manner.
- the main reaction takes place in the fluidized state, wherein the ozone gas comes in the form of small bubbles directly to the fiber and there takes place the bleaching reaction.
- a much better reaction is already achieved in the rotary mixer.
- the chemical reaction after the rotary mixer is more efficient than with conventional mixing principles. That At lower ozone inputs, a higher ozone conversion is achieved. Finally, the largely reacted ozone gas is separated from the pulp suspension via a degassing vessel.
- Pulp is fed to the rotary mixer at a pressure of 3 to 20 bar.
- the oxygen gas is also added to the rotary mixer.
- the pulp is fluidized very quickly and at the same time the oxygen gas is mixed very homogeneously and with fine pores into the pulp suspension.
- the main reaction takes place in the subsequent reactor with a relatively long residence time of up to two hours. Due to the more efficient mixing of the oxygen gas and the generation of a very homogeneous and fine-pored dispersion, a higher delignification rate is achieved with the same residence time in the reactor than in previous mixing principles.
- the mixing principle is also excellent for incorporation of liquid chemicals, e.g. Chloride oxide or hydrogen peroxide in a medium-consistency pulp suspension.
- liquid chemicals e.g. Chloride oxide or hydrogen peroxide
- a shorter mixer length can be selected, since in the first instance the efficient mixing and not the increased residence time in the fluidized state comes into play.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Paper (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE502005005481T DE502005005481D1 (de) | 2004-07-21 | 2005-06-24 | Verfahren zum mischen, vorrichtung hierzu und deren verwendung |
| EP05752464A EP1768770B1 (de) | 2004-07-21 | 2005-06-24 | Verfahren zum mischen, vorrichtung hierzu und deren verwendung |
| CA2574368A CA2574368C (en) | 2004-07-21 | 2005-06-24 | Process for mixing device therefor and use thereof |
| US11/655,645 US20070175604A1 (en) | 2004-07-21 | 2007-01-19 | Process for mixing, device therefor and use thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0124504A AT413656B (de) | 2004-07-21 | 2004-07-21 | Verfahren zum mischen, vorrichtung hierzu und deren verwendung |
| ATA1245/2004 | 2004-07-21 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US11/655,645 Continuation US20070175604A1 (en) | 2004-07-21 | 2007-01-19 | Process for mixing, device therefor and use thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006007609A1 true WO2006007609A1 (de) | 2006-01-26 |
Family
ID=34916828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/AT2005/000229 Ceased WO2006007609A1 (de) | 2004-07-21 | 2005-06-24 | Verfahren zum mischen, vorrichtung hierzu und deren verwendung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20070175604A1 (de) |
| EP (1) | EP1768770B1 (de) |
| AT (2) | AT413656B (de) |
| CA (1) | CA2574368C (de) |
| DE (1) | DE502005005481D1 (de) |
| WO (1) | WO2006007609A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010050863A1 (de) * | 2010-11-04 | 2012-05-10 | Mt-Energie Gmbh | Vorrichtung zum Mischen von nicht pumpfähiger Biomasse mit einer Flüssigkeit |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2472576C2 (ru) * | 2011-03-23 | 2013-01-20 | Ооо "Кавикорм" | Измельчитель-диспергатор |
| CN110215857B (zh) * | 2019-05-20 | 2021-07-20 | 深圳市尚水智能设备有限公司 | 一种叶轮组件及使用该组件的固体和液体混合设备 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2402905A (en) * | 1943-09-14 | 1946-06-25 | Girdler Corp | Mixing apparatus |
| US2448042A (en) * | 1943-09-14 | 1948-08-31 | Girdler Corp | Mixing apparatus |
| US4205919A (en) * | 1975-08-20 | 1980-06-03 | London Brick Buildings Limited | Mixer for and method for mixing particulate constituents |
| US20030072216A1 (en) * | 2001-08-31 | 2003-04-17 | Yoshitaka Araki | Dispersing apparatus |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US166181A (en) * | 1875-08-03 | Improvement in rotary churns | ||
| US2171296A (en) * | 1939-08-29 | Ore grinder | ||
| US1381673A (en) * | 1921-06-14 | And five per cent | ||
| US3658A (en) * | 1844-07-11 | Cylindrical mill for grinding grain | ||
| US690506A (en) * | 1901-08-14 | 1902-01-07 | Casimir Wurster | Pulping-machine. |
| US773544A (en) * | 1901-11-30 | 1904-11-01 | Kensett Champney | Coffee-hulling machine. |
| US2071622A (en) * | 1931-05-08 | 1937-02-23 | C E Butler | Washing machine |
| US2543537A (en) * | 1947-01-11 | 1951-02-27 | Willard F Smith | Almond shelling machine |
| CH325205A (de) * | 1953-09-16 | 1957-10-31 | Svenska Flaektfabriken Ab | Vorrichtung zur Behandlung von losem Gut, insbesondere von Faserstoffen |
| FR93585E (fr) * | 1967-04-27 | 1969-04-18 | Brev Granofibresebreg Soc D Ex | Procédé perfectionné pour la formation d'agrégats sphériques des fibres et appareil pour la mise en oeuvre du procédé. |
| FI62872C (fi) * | 1978-06-06 | 1983-03-10 | Ahlstroem Oy | Anordning foer silning av fibersuspensioner |
| SE419603B (sv) * | 1979-11-27 | 1981-08-17 | Kamyr Ab | Apparat for inblandning av behandlingsmedel i suspensioner |
| US4577974A (en) * | 1984-05-04 | 1986-03-25 | Kamyr, Inc. | Medium consistency mixer rotor and stator construction |
| US5813758A (en) * | 1993-12-10 | 1998-09-29 | Ahlstrom Machinery Inc. | Concentric ring fluidizing mixer |
| CA2158522C (en) * | 1994-09-19 | 2001-04-10 | Daniel R. Roll | Mixer for mixing multi-phase fluids |
-
2004
- 2004-07-21 AT AT0124504A patent/AT413656B/de not_active IP Right Cessation
-
2005
- 2005-06-24 DE DE502005005481T patent/DE502005005481D1/de not_active Expired - Lifetime
- 2005-06-24 CA CA2574368A patent/CA2574368C/en not_active Expired - Fee Related
- 2005-06-24 AT AT05752464T patent/ATE409076T1/de not_active IP Right Cessation
- 2005-06-24 WO PCT/AT2005/000229 patent/WO2006007609A1/de not_active Ceased
- 2005-06-24 EP EP05752464A patent/EP1768770B1/de not_active Revoked
-
2007
- 2007-01-19 US US11/655,645 patent/US20070175604A1/en not_active Abandoned
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2402905A (en) * | 1943-09-14 | 1946-06-25 | Girdler Corp | Mixing apparatus |
| US2448042A (en) * | 1943-09-14 | 1948-08-31 | Girdler Corp | Mixing apparatus |
| US4205919A (en) * | 1975-08-20 | 1980-06-03 | London Brick Buildings Limited | Mixer for and method for mixing particulate constituents |
| US20030072216A1 (en) * | 2001-08-31 | 2003-04-17 | Yoshitaka Araki | Dispersing apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010050863A1 (de) * | 2010-11-04 | 2012-05-10 | Mt-Energie Gmbh | Vorrichtung zum Mischen von nicht pumpfähiger Biomasse mit einer Flüssigkeit |
| DE102010050863B4 (de) * | 2010-11-04 | 2016-04-14 | MT-Energie Service GmbH | Vorrichtung zum Mischen von nicht pumpfähiger Biomasse mit einer Flüssigkeit |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1768770B1 (de) | 2008-09-24 |
| AT413656B (de) | 2006-04-15 |
| US20070175604A1 (en) | 2007-08-02 |
| DE502005005481D1 (de) | 2008-11-06 |
| ATE409076T1 (de) | 2008-10-15 |
| ATA12452004A (de) | 2005-09-15 |
| EP1768770A1 (de) | 2007-04-04 |
| CA2574368A1 (en) | 2006-01-26 |
| CA2574368C (en) | 2013-02-12 |
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