WO1997032073A1 - Procede de fabrication - Google Patents

Procede de fabrication Download PDF

Info

Publication number
WO1997032073A1
WO1997032073A1 PCT/IE1997/000012 IE9700012W WO9732073A1 WO 1997032073 A1 WO1997032073 A1 WO 1997032073A1 IE 9700012 W IE9700012 W IE 9700012W WO 9732073 A1 WO9732073 A1 WO 9732073A1
Authority
WO
WIPO (PCT)
Prior art keywords
cellulosic material
grinder
classifier
drive
coarse
Prior art date
Application number
PCT/IE1997/000012
Other languages
English (en)
Inventor
Declan M. O'grady
Michael G. Murphy
Original Assignee
Shieldaig Limited
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 Shieldaig Limited filed Critical Shieldaig Limited
Priority to EP97905372A priority Critical patent/EP0883711B1/fr
Priority to AU22276/97A priority patent/AU2227697A/en
Priority to AT97905372T priority patent/ATE191247T1/de
Priority to DE69701564T priority patent/DE69701564T2/de
Publication of WO1997032073A1 publication Critical patent/WO1997032073A1/fr

Links

Classifications

    • 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
    • D21B1/06—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods
    • D21B1/063—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods using grinding devices

Definitions

  • the invention relates to a method for producing cellulose- based excipients such as carboxymethylcellulose and the like.
  • cellulose based excipients particularly pharmaceutical excipients
  • cellulose products generally have a high value, however, there is a need to optimise the processing method to minimise losses and to provide a range of such cellulose-based products which meet these requirements.
  • the ground and classified material is drawn into the grinder receiving bin by a fan having a variable speed drive and the method includes the step, prior to delivery of the coarse cellulosic material to the grinder, of setting the speed of the fan drive to a desired speed matched to the coarse cellulosic material.
  • the method includes the step of delivering the oversize cellulosic material from the separator to the feed hopper for recycling.
  • the operating load on the grinder drive is sensed by sensing the operating power of the grinder drive
  • the classifier drive unit is a variable speed drive and the classifier drive unit is controlled by varying the drive speed of the classifier in accordance with the operating power of the grinder drive.
  • a rotary air valve is provided at the feed hopper outlet and the coarse cellulosic material is delivered from the feed hopper to the grinder by a blower unit.
  • the method includes the step of de-bagging coarse cellulosic materials into the feed hopper.
  • cellulose-based excipients and in this case pharmaceutical excipients such as carboxymethylcellulose and the like.
  • the method is in this case used in the production of three different types of cellulose-based excipients. These may be a blend of different excipients.
  • Equivalent equipment used in processing different cellulosic materials are illustrated in some cases for clarity as separate items but are assigned the same reference numerals.
  • coarse cellulosic material is delivered into a feed hopper 1 having an outlet fitted in this case with a fixed speed rotary valve 2.
  • the coarse cellulosic material is blown by a blower unit 3 along a common supply line 4 to a grinder/classifier unit 5.
  • the grinder/classifier unit 5 comprises a grinder 10 and a classifier 11.
  • the grinder 10 has a drive unit with an associated power load, in this case, operating amps monitor 12 fitted with a controller 13.
  • the classifier 11 is driven by a variable speed drive unit 15, the operation of which is controlled by the controller 13.
  • a fan 20 fitted with a variable speed drive unit 21 draws ground and classified cellulosic material along a delivery line 22 to a grinder receiving bin 23. Air is exhausted through a plurality of air filter socks 25.
  • the receiving bin 23 has an outlet fitted with a rotary valve 27 through which the ground and classified cellulosic material is delivered to a separator screen unit 30.
  • the 30 may have any size of aperture fitted to achieve separation into a desired size fraction and oversize.
  • the desired size fraction is delivered through a rotary valve
  • the oversize material is recovered and delivered along a recycling line 38 to the feed hopper 1.
  • the cellulosic material with the desired size distribution is delivered into a silo 40 and collected in a holding bin 41 available for packaging on demand.
  • the cellulosic material is blended for improved consistency in a blender unit 45 fitted with a blending screw prior to delivery to a silo 40.
  • cellulose-based excipients are produced by first setting, using the variable speed drive unit 21, an operating speed for the fan 20 matched to the cellulosic material being processed.
  • a desired operating load on the grinder 10 is then set using the amp sensing unit 12 linked to the controller 13 for controlling the speed control unit 15 of the classifier 11.
  • the fan 20 and blower unit 3 are operated to release the valve 2, allowing coarse cellulosic material to be delivered along the feed line 4 to the grinder 10.
  • the coarse cellulosic material is ground in the grinder 10 and then classified in the classifier 11.
  • the drive unit 15 of the classifier 11 is controlled in accordance with the operating load on the grinder 10.
  • the fan 20 draws the ground and classified cellulosic material into the grinder receiving bin 23.
  • the separator unit 30 On operation of the rotary valve 27, the cellulosic material is delivered to the separator unit 30 where the cellulosic material is separated into cellulosic material of a desired size and oversize material which is recycled to the feed hopper 1.
  • the invention provides an optimised process for producing not only one but several different cellulose-based excipients, particularly pharmaceutical excipients.
  • the particle size range of the cellulosic material is consistent and a wider range, particularly fine grades, of particle sizes may be produced. As any oversize material is recycled, the yield is optimised.
  • the throughput of cellulosic material is maximised as the residence time in the grinder/classifier unit is optimised.
  • the invention also provides a method of production of cellulosic material in which the energy requirement is optimised.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Paper (AREA)

Abstract

On introduit des matières cellulosiques grossières dans une trémie d'alimentation (1) dont l'orifice de sortie est équipé d'un robinet rotatif (2). On introduit par soufflage les matières grossières dans un broyeur (10) et dans un classificateur (11). Le broyeur (10) comporte une unité d'entraînement possédant une unité (12) de contrôle de la charge, équipée d'une unité de commande (13). Le classificateur (11) est entraîné par une unité d'entraînement à vitesse variable (15) elle-même commandée par l'unité de commande (13). Un ventilateur (20) équipé d'une unité d'entraînement à vitesse variable (21) fait passer dans une cuve de réception (23) les matières cellulosiques broyées et triées, en vue de leur séparation dans une unité à tamis séparateur (30). Le régime du ventilateur (20) et les conditions d'exploitation du broyeur (10) et du classificateur (11) sont commandés de manière à optimiser la transformation des matières cellulosiques.
PCT/IE1997/000012 1996-02-29 1997-02-28 Procede de fabrication WO1997032073A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP97905372A EP0883711B1 (fr) 1996-02-29 1997-02-28 Procede de fabrication
AU22276/97A AU2227697A (en) 1996-02-29 1997-02-28 Production method
AT97905372T ATE191247T1 (de) 1996-02-29 1997-02-28 Herstellungsverfahren
DE69701564T DE69701564T2 (de) 1996-02-29 1997-02-28 Herstellungsverfahren

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IE960182A IE960182A1 (en) 1996-02-29 1996-02-29 Production method
IE960182 1996-02-29

Publications (1)

Publication Number Publication Date
WO1997032073A1 true WO1997032073A1 (fr) 1997-09-04

Family

ID=11041086

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IE1997/000012 WO1997032073A1 (fr) 1996-02-29 1997-02-28 Procede de fabrication

Country Status (6)

Country Link
EP (1) EP0883711B1 (fr)
AT (1) ATE191247T1 (fr)
AU (1) AU2227697A (fr)
DE (1) DE69701564T2 (fr)
IE (1) IE960182A1 (fr)
WO (1) WO1997032073A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007009321A1 (fr) * 2005-07-21 2007-01-25 Jiangsu Kehang Environment Engineering Technology Procédé de commande de broyage à rendement élevé et superfin en cycle fermé et appareil économique et sans danger pour l’environnement pour scories de déchets industriels
US8545633B2 (en) 2009-08-24 2013-10-01 Abengoa Bioenergy New Technologies, Inc. Method for producing ethanol and co-products from cellulosic biomass
US8778084B2 (en) 2008-07-24 2014-07-15 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for treating a cellulosic feedstock
US8900370B2 (en) 2008-07-24 2014-12-02 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for conveying a cellulosic feedstock
US8911557B2 (en) 2008-07-24 2014-12-16 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for conveying a cellulosic feedstock
US8915644B2 (en) 2008-07-24 2014-12-23 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for conveying a cellulosic feedstock
US8956460B2 (en) 2010-05-07 2015-02-17 Abengoa Bioenergy New Technologies, Llc Process for recovery of values from a fermentation mass obtained in producing ethanol and products thereof
US9004742B2 (en) 2009-01-23 2015-04-14 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for conveying a cellulosic feedstock
US9010522B2 (en) 2008-07-24 2015-04-21 Abengoa Bioenergy New Technologies, Llc Method and apparatus for conveying a cellulosic feedstock
US9033133B2 (en) 2009-01-23 2015-05-19 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for conveying a cellulosic feedstock
US9127325B2 (en) 2008-07-24 2015-09-08 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for treating a cellulosic feedstock

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB850917A (en) * 1958-07-12 1960-10-12 Svenska Tandsticks Aktiebolage Improvements in plants for disintegrating materials
US4867383A (en) * 1985-02-11 1989-09-19 Kimberly-Clark Corporation Method and system for processing wastepaper

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB850917A (en) * 1958-07-12 1960-10-12 Svenska Tandsticks Aktiebolage Improvements in plants for disintegrating materials
US4867383A (en) * 1985-02-11 1989-09-19 Kimberly-Clark Corporation Method and system for processing wastepaper

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007009321A1 (fr) * 2005-07-21 2007-01-25 Jiangsu Kehang Environment Engineering Technology Procédé de commande de broyage à rendement élevé et superfin en cycle fermé et appareil économique et sans danger pour l’environnement pour scories de déchets industriels
US8006925B2 (en) 2005-07-21 2011-08-30 Jiangsu Kehang Environment Engineering Technology Control method for superfine powder grinding industrial waste slag in an energy-saving and environmental-friendly type of closed cycle with high yield and the apparatus for the same
US8915644B2 (en) 2008-07-24 2014-12-23 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for conveying a cellulosic feedstock
US8778084B2 (en) 2008-07-24 2014-07-15 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for treating a cellulosic feedstock
US8900370B2 (en) 2008-07-24 2014-12-02 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for conveying a cellulosic feedstock
US8911557B2 (en) 2008-07-24 2014-12-16 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for conveying a cellulosic feedstock
US9010522B2 (en) 2008-07-24 2015-04-21 Abengoa Bioenergy New Technologies, Llc Method and apparatus for conveying a cellulosic feedstock
US9127325B2 (en) 2008-07-24 2015-09-08 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for treating a cellulosic feedstock
US9004742B2 (en) 2009-01-23 2015-04-14 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for conveying a cellulosic feedstock
US9033133B2 (en) 2009-01-23 2015-05-19 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for conveying a cellulosic feedstock
US8545633B2 (en) 2009-08-24 2013-10-01 Abengoa Bioenergy New Technologies, Inc. Method for producing ethanol and co-products from cellulosic biomass
US9335043B2 (en) 2009-08-24 2016-05-10 Abengoa Bioenergy New Technologies, Inc. Method for producing ethanol and co-products from cellulosic biomass
US8956460B2 (en) 2010-05-07 2015-02-17 Abengoa Bioenergy New Technologies, Llc Process for recovery of values from a fermentation mass obtained in producing ethanol and products thereof

Also Published As

Publication number Publication date
DE69701564D1 (de) 2000-05-04
EP0883711A1 (fr) 1998-12-16
EP0883711B1 (fr) 2000-03-29
DE69701564T2 (de) 2000-07-27
AU2227697A (en) 1997-09-16
ATE191247T1 (de) 2000-04-15
IE960182A1 (en) 1997-09-10

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