EP1082174B1 - Sechage-broyage de derives de cellulose, notamment de methylcellulose - Google Patents

Sechage-broyage de derives de cellulose, notamment de methylcellulose Download PDF

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Publication number
EP1082174B1
EP1082174B1 EP99924882A EP99924882A EP1082174B1 EP 1082174 B1 EP1082174 B1 EP 1082174B1 EP 99924882 A EP99924882 A EP 99924882A EP 99924882 A EP99924882 A EP 99924882A EP 1082174 B1 EP1082174 B1 EP 1082174B1
Authority
EP
European Patent Office
Prior art keywords
air
product
milling
turbulence mill
mill
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
EP99924882A
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German (de)
English (en)
Other versions
EP1082174A1 (fr
Inventor
Michael Andreae-Jäckering
Günter WERRY
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.)
Altenburger Maschinen KG Jaeckering and Co
Original Assignee
Altenburger Maschinen KG Jaeckering and Co
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 Altenburger Maschinen KG Jaeckering and Co filed Critical Altenburger Maschinen KG Jaeckering and Co
Publication of EP1082174A1 publication Critical patent/EP1082174A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B02C23/24—Passing gas through crushing or disintegrating zone
    • B02C23/26—Passing gas through crushing or disintegrating zone characterised by point of gas entry or exit or by gas flow path

Definitions

  • Air vortex mills of this type are, for example from EP-A-226 900 and from the brochure "Grinding and Drying Plant “from Altenburger Maschinen KG Jiffering & Co.
  • Cellulose is usually manufactured and modified in reactors and then comes as wet cellulose pulp in the next process step.
  • a free-flowing powder of Methyl cellulose In one step, a free-flowing powder of Methyl cellulose.
  • the cellulose is typically in the wet state, moisture content 60 - 70%, but also 80% are possible and more than wet product in a flow of cold air into the ULTRA-ROTOR.
  • the hot air is first fed into the upper grinding zones and the product is then dried there.
  • water can be injected in the lower area of the rotor. This further increases the bulk weight. Through the water injection it is achieved that the product is sufficient during the grinding phase stays moist and cool.
  • Both fine cellulose, grain size 63 to 150 my, and coarser, rather celluloses intended for consumption, grain size 200 to 800 my, can be ground and dried with a high bulk density.
  • each highly schematically an air vortex mill 1 show with their drive motor 2.
  • the one to be ground and / or to be dried Product usually passes through such mills 1 from bottom to top. Because of the high flow velocities is the duration of the Product in the mill only a few seconds (e.g. 1 to 2 seconds).
  • FIG 1 shows an air vortex mill according to the prior art. Below the lower grinding stage (grinding stages are only shown in Figure 3) their inlet 3. The product leaves the mill through the above the Outlet 4 located at this outlet 4 only close in Figure 3 shown devices, usually cyclones, the separation of the product from the air flow.
  • FIG. 2 shows an air vortex mill 1 in which the grinding and drying of Cellulose derivatives carried out according to the inventive method becomes.
  • the product is fed to inlet 3 together with ambient air. This takes place at the level of the lower and middle grinding stages or zones Shred the product when wet and at relatively low temperatures (around ambient temperature) instead.
  • the air vortex mill 1 equipped with an inlet 5. It is located above the product inlet 3 and flows into the mill 1 at a height in which essentially the crushing process takes place. About the inlet 5 can be water be injected to get the product wet during the crushing process and keep it cool.
  • FIG. 3 shows an air vortex mill 1 with seven grinding stages 8.
  • the inlet 3 ambient air and product are supplied.
  • product can also be added up to the level of the second grinding stage (inlet 7).
  • the warm or hot air - e.g. with a temperature of 180 to 220 ° C - is only at the level of the upper stages (in the illustrated embodiment at the level of the sixth stage). This area essentially takes place the drying of the product takes place.
  • a residual moisture of less than 5% H2O is aimed for. Should this be in the upper two levels are not reached, there is the possibility to increase the number of stages of the air vortex mill.
  • a dryer of any kind downstream of the outlet 4 the residual moisture can be set to the desired degree.
  • a dryer 9 connected to the outlet 4 schematically shown. This is followed by a cyclone system 10 known per se to separate product and air.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Crushing And Grinding (AREA)

Claims (11)

  1. Procédé pour broyer et sécher des dérivés cellulosiques dans un broyeur à tourbillon d'air (1), caractérisé en ce que le produit est transporté à l'état humide dans le broyeur à tourbillon d'air (1), en ce qu'il est finement broyé à froid à l'état de produit humide dans les premières zones de broyage (8) ou zones de broyage (8) inférieures du broyeur à tourbillon d'air (1) et en ce que de l'air chaud/très chaud servant au séchage n'est introduit que dans d'autres zones de broyage qui font suite aux premières zones de broyage.
  2. Procédé selon la revendication 1, caractérisé en ce que de l'eau est injectée dans le domaine des zones de broyage (8) inférieures à intermédiaires.
  3. Procédé selon la revendication 2, caractérisé en ce que de l'eau est injectée à plusieurs endroits (5, 5').
  4. Procédé selon la revendication 1, 2 ou 3, caractérisé en ce que de l'air chaud/très chaud est introduit à la hauteur des zones de broyage (8) supérieures.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que le produit et de l'air ambiant sont introduits par une entrée (3) située sous la zone de broyage (8) la plus inférieure.
  6. Procédé selon la revendication 5, caractérisé en ce que du produit est introduit également jusqu'à la hauteur de la seconde zone de broyage (8).
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que la cellulose ayant une teneur en humidité de 60 à 80 %, de préférence de 60 à 70 %, est introduite sous forme de produit humide dans un courant d'air dans le domaine inférieur d'un broyeur à tourbillon d'air (1) parcouru de bas en haut, en ce que de l'eau est introduite dans les zones de broyage (8) inférieures à intermédiaires dans lesquelles a lieu essentiellement le processus de broyage et en ce que de l'air chaud/très chaud est introduit dans les zones de broyage (8) supérieures dans lesquelles a lieu essentiellement le processus de séchage.
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce que le produit est post-séché dans un sécheur (9) disposé en aval du broyeur à tourbillon d'air.
  9. Broyeur à tourbillon d'air (1) pour la mise en oeuvre du procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est équipé dans le domaine inférieur d'une entrée de produit/air (3), dans le domaine inférieur à intermédiaire d'une entrée d'eau (5, 5') et dans le domaine supérieur d'une entrée d'air chaud/très chaud (6).
  10. Broyeur à tourbillon d'air (1) selon la revendication 9, caractérisé en ce qu'un sécheur (9), auquel fait suite un système de cyclones (10), est raccordé à sa sortie (4).
  11. Broyeur à tourbillon d'air (1) selon la revendication 9 ou 10, caractérisé en ce qu'il est du type ULTRA-ROTOR.
EP99924882A 1998-05-27 1999-05-05 Sechage-broyage de derives de cellulose, notamment de methylcellulose Expired - Lifetime EP1082174B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19823563A DE19823563A1 (de) 1998-05-27 1998-05-27 Mahltrocknung von Zellulose-Derivaten, insbesondere Methl-Zellulose
DE19823563 1998-05-27
PCT/EP1999/003077 WO1999061157A1 (fr) 1998-05-27 1999-05-05 Sechage-broyage de derives de cellulose, notamment de methylcellulose

Publications (2)

Publication Number Publication Date
EP1082174A1 EP1082174A1 (fr) 2001-03-14
EP1082174B1 true EP1082174B1 (fr) 2002-02-13

Family

ID=7869001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99924882A Expired - Lifetime EP1082174B1 (fr) 1998-05-27 1999-05-05 Sechage-broyage de derives de cellulose, notamment de methylcellulose

Country Status (3)

Country Link
EP (1) EP1082174B1 (fr)
DE (2) DE19823563A1 (fr)
WO (1) WO1999061157A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007090599A1 (fr) * 2006-02-10 2007-08-16 Altenburger Maschinen Jäckering GmbH DISPOSITIF ET PROCÉDÉ D'injection DE PRODUITS HUMIDES ET/OU COLLANTS, EN PARTICULIER DE CELLULOSE, DANS UN BROYEUR A LIT FLUIDISE

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20021758U1 (de) * 2000-12-22 2002-05-08 Sniehotta Michael Prallmühle mit Schlagwerkzeugen an einem motorgetriebenen Rotor
DE102005032248B4 (de) * 2005-07-09 2009-04-23 Tronox Pigments Gmbh Titandioxidpigmentherstellung unter Verwendung einer Luftwirbelmühle
DE102006033791A1 (de) * 2006-07-19 2008-01-24 Prokon Nord Energiesysteme Gmbh Verbesserte Verfahren zur Herstellung von Ethanol, Gluten und und Kleie aus Getreide
DE102010009894A1 (de) 2010-03-02 2011-09-08 Rolf Schatz Rotor-Mahlwerkzeug für Rotorprallmühlen
DE102014015964A1 (de) 2014-10-31 2016-06-16 Pallmann Maschinenfabrik Gmbh & Co. Kg Vorrichtung und Verfahren zum Bearbeiten von Aufgabegut
DE102022132971A1 (de) 2022-12-12 2024-06-13 PWA recycling concept GmbH Vorrichtung zum Zerkleinern und/oder Aufbereiten von Material, Anordnung und Verfahren

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3543370A1 (de) * 1985-12-07 1987-06-11 Jackering Altenburger Masch Muehle mit mehreren mahlstufen
DE3811910C2 (de) * 1988-04-09 1997-04-10 Mahltechnik Goergens Gmbh Mühle und Verfahren zum gleichzeitigen Mahlen und Trocknen eines feuchten Produkts
DE3839831A1 (de) * 1988-11-25 1990-05-31 Hoechst Ag Verfahren und vorrichtung zur produktschonenden mahlung und gleichzeitigen trocknung von feuchten celluloseethern
DE19641781A1 (de) * 1996-10-10 1998-04-16 Clariant Gmbh Verfahren und Vorrichtung zum gleichzeitigen Mahlen und Trocknen eines feuchten Celluloseether enthaltenden Mahlgutes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007090599A1 (fr) * 2006-02-10 2007-08-16 Altenburger Maschinen Jäckering GmbH DISPOSITIF ET PROCÉDÉ D'injection DE PRODUITS HUMIDES ET/OU COLLANTS, EN PARTICULIER DE CELLULOSE, DANS UN BROYEUR A LIT FLUIDISE

Also Published As

Publication number Publication date
WO1999061157A1 (fr) 1999-12-02
DE19823563A1 (de) 1999-12-02
EP1082174A1 (fr) 2001-03-14
DE59900869D1 (de) 2002-03-21

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