WO2020091640A1 - Mélangeur pour mélanger des produits chimiques dans une pâte - Google Patents

Mélangeur pour mélanger des produits chimiques dans une pâte Download PDF

Info

Publication number
WO2020091640A1
WO2020091640A1 PCT/SE2019/050808 SE2019050808W WO2020091640A1 WO 2020091640 A1 WO2020091640 A1 WO 2020091640A1 SE 2019050808 W SE2019050808 W SE 2019050808W WO 2020091640 A1 WO2020091640 A1 WO 2020091640A1
Authority
WO
WIPO (PCT)
Prior art keywords
pulp
rotor
rotor drum
drum
mixer according
Prior art date
Application number
PCT/SE2019/050808
Other languages
English (en)
Inventor
Mikael Löfgren
Niklas Eriksson
Original Assignee
Valmet Ab
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 Valmet Ab filed Critical Valmet Ab
Priority to CN201980062310.7A priority Critical patent/CN112752880B/zh
Priority to EP19877758.3A priority patent/EP3874089A4/fr
Publication of WO2020091640A1 publication Critical patent/WO2020091640A1/fr

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
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/111—Centrifugal stirrers, i.e. stirrers with radial outlets; Stirrers of the turbine type, e.g. with means to guide the flow
    • 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
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/02—Maintaining the aggregation state of the mixed materials
    • B01F23/024—Maintaining mixed ingredients in movement to prevent separation of the ingredients after mixing
    • 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
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • D21B1/34—Kneading or mixing; Pulpers
    • D21B1/342—Mixing apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
    • B01F2035/35—Use of other general mechanical engineering elements in mixing devices
    • B01F2035/351—Sealings
    • B01F2035/3512—Fluid sealings, e.g. using liquids or air under pressure which is leaking into the mixing receptacle
    • 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
    • B01F2101/47—Mixing of ingredients for making paper pulp, e.g. wood fibres or wood pulp
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor

Definitions

  • the solution is easily scalable and can be used for large productions without demanding enormous energy efforts or that the machine becomes extremely large, at the same time as separation and inhomogeneous mixing is prohibited.
  • FIG. 1A schematically illustrates an embodiment of a rotor for use in a mixer for mixing chemicals into pulp
  • the slits are straight slits.
  • other shapes are feasible in alternative embodiments.
  • FIG. 1B illustrates a cross-sectional view of an embodiment of a mixer 1 for mixing chemicals into pulp having a similar rotor 10.
  • the mixer 1 comprises a chamber 30.
  • the chamber 30 has an inlet 32 for pulp and chemicals and an outlet 34 for mixed pulp.
  • the inlet 32 for pulp and chemicals is arranged through a first wall 36 of the chamber 30.
  • the rotor 10 has a rotor drum 20 that is perforated and the rotor drum has a general cylindrical shape.
  • the rotor 10 is arranged through a second wall 37, opposite to the first wall 36, of the chamber 30. Pulp and chemicals entering the chamber 30 through the inlet 32 in the axial direction A will flow into the interior of the rotor drum 20 through the first open end 24.
  • the drum Since the drum is hollow, the pulp comes from the inside and passes outwards. By mixing in radially increasing direction, a natural separation cannot occur since the pulp and gas are forced to pass the mixing zone for mixing. If a difference in inner radius of the drum and outer radius of the drum is small, the difference in speed becomes small. At a small difference in speed, about the same mixing intensities will be present around the entire drum. If the mixing intensity can be kept on an even level over the fluidizing point, the mixer will use low amounts of energy.
  • FIG 9A illustrates such an embodiment in an elevated cross-sectional view.
  • a stator drum 40 is arranged concentrically with the rotor drum 20.
  • the stator drum 40 is also perforated.
  • the stator drum 40 is positioned radially outside the rotor drum 20.
  • the openings in the stator drum 40 can be of any kind. They can be of the same type as in the rotor drum 20 or different therefrom.
  • the chemicals comprise bleaching agents.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Paper (AREA)

Abstract

L'invention concerne un mélangeur (1) destiné à mélanger des produits chimiques dans une pâte, comprenant : - un compartiment (30) avec une entrée (32) pour la pâte et les produits chimiques et une sortie (34) pour la pâte mélangée ; ladite entrée (32) pour la pâte et les produits chimiques étant formée à travers une première paroi (36) dudit compartiment (30) ; - un rotor (10) ayant un tambour de rotor (20) ; ledit tambour de rotor (20) étant perforé, ce qui crée des ouvertures (22), et ayant une forme cylindrique ; ledit rotor (10) étant agencé à travers une seconde paroi (37), opposée à ladite première paroi (36), dudit compartiment (30) et agencé pour faire tourner ledit tambour de rotor (20) autour d'un axe de rotation (S) coïncidant avec une direction d'entrée (A) de ladite pâte et des produits chimiques à travers ladite entrée (32) pour la pâte et les produits chimiques ; ledit rotor (10) étant disposé contre ladite chambre (30) pour s'opposer à l'écoulement de matière depuis ladite entrée (32) pour la pâte et les produits chimiques vers ladite sortie (34) pour la pâte mélangée sauf à travers les ouvertures (22) dans ledit tambour de rotor (20).
PCT/SE2019/050808 2018-10-30 2019-08-29 Mélangeur pour mélanger des produits chimiques dans une pâte WO2020091640A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201980062310.7A CN112752880B (zh) 2018-10-30 2019-08-29 用于将化学品混合到浆中的混合器
EP19877758.3A EP3874089A4 (fr) 2018-10-30 2019-08-29 Mélangeur pour mélanger des produits chimiques dans une pâte

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1851348A SE542365C2 (en) 2018-10-30 2018-10-30 Mixer for mixing chemicals into pulp
SE1851348-1 2018-10-30

Publications (1)

Publication Number Publication Date
WO2020091640A1 true WO2020091640A1 (fr) 2020-05-07

Family

ID=70155698

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2019/050808 WO2020091640A1 (fr) 2018-10-30 2019-08-29 Mélangeur pour mélanger des produits chimiques dans une pâte

Country Status (4)

Country Link
EP (1) EP3874089A4 (fr)
CN (1) CN112752880B (fr)
SE (1) SE542365C2 (fr)
WO (1) WO2020091640A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11931707B1 (en) * 2023-11-16 2024-03-19 Herman Hockmeyer System for agglomerate mixing having a rotor and angular slotted stator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4416858A (en) * 1979-06-22 1983-11-22 Rtl Contactor Holding S.A. Contactor
CN101259389A (zh) * 2007-03-05 2008-09-10 华东理工大学 一种高剪切细化均质机
CN107051355A (zh) * 2017-03-30 2017-08-18 山东里德工程技术有限公司 一种单轴自清洁反应器

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB624107A (en) * 1947-11-14 1949-05-27 Frederick David Edwards Improvements in and relating to emulsifying and like apparatus
AU466801B2 (en) * 1972-04-10 1975-11-13 Cincinnati Milacron Inc Mixing device
CH582788A5 (fr) * 1974-09-23 1976-12-15 Escher Wyss Gmbh
RU2060826C1 (ru) * 1992-05-22 1996-05-27 Нильссон Харри Размалывающий аппарат для суспензий из волокон
EP0674730A4 (fr) * 1992-12-18 1996-04-10 Ingersoll Rand Co Procede et dispositif de melange de reactif de blanchiment et de pate a papier.
DE19541891A1 (de) * 1995-11-10 1997-05-22 Voith Sulzer Stoffaufbereitung Vorrichtung zur Behandlung von hochkonsistentem Faserstoff
DE29608712U1 (de) * 1996-05-14 1996-09-05 Wittek Axel Homogenisiereinrichtung
US5863120A (en) * 1997-01-31 1999-01-26 Beloit Technologies, Inc. Medium consistency liquid mixture
SE524465E (sv) * 2002-12-12 2007-09-04 Metso Paper Inc Anordning för blandning av ett gas- eller vätskeformigt medium med en massasuspension
FI122737B (fi) * 2010-02-04 2012-06-15 Andritz Oy Laite kaasumaisen tai nestemäisen aineen sekoittamiseksi kuitususpensioon
CN202490592U (zh) * 2012-02-28 2012-10-17 昆山大世界油墨涂料有限公司 粉液体混合装置
EP3429812B1 (fr) * 2016-03-14 2020-02-12 Ecolab USA Inc. Appareil pour l'hydratation rapide de polymères
US11419451B2 (en) * 2016-08-08 2022-08-23 Plant Tap, LLC Apparatus and method for producing beverages from dry ingredients
CN108096881A (zh) * 2018-02-07 2018-06-01 江苏神力电源科技有限公司 一种用于pe隔板生产的原料消泡套筒机构

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4416858A (en) * 1979-06-22 1983-11-22 Rtl Contactor Holding S.A. Contactor
CN101259389A (zh) * 2007-03-05 2008-09-10 华东理工大学 一种高剪切细化均质机
CN107051355A (zh) * 2017-03-30 2017-08-18 山东里德工程技术有限公司 一种单轴自清洁反应器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3874089A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11931707B1 (en) * 2023-11-16 2024-03-19 Herman Hockmeyer System for agglomerate mixing having a rotor and angular slotted stator

Also Published As

Publication number Publication date
CN112752880A (zh) 2021-05-04
EP3874089A1 (fr) 2021-09-08
SE1851348A1 (en) 2020-04-14
SE542365C2 (en) 2020-04-14
EP3874089A4 (fr) 2023-01-04
CN112752880B (zh) 2023-04-04

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