EP1172477B1 - Procédé et dispositif pour le chargement de fibres avec carbonate de calcium - Google Patents

Procédé et dispositif pour le chargement de fibres avec carbonate de calcium Download PDF

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Publication number
EP1172477B1
EP1172477B1 EP01114533A EP01114533A EP1172477B1 EP 1172477 B1 EP1172477 B1 EP 1172477B1 EP 01114533 A EP01114533 A EP 01114533A EP 01114533 A EP01114533 A EP 01114533A EP 1172477 B1 EP1172477 B1 EP 1172477B1
Authority
EP
European Patent Office
Prior art keywords
reactors
process according
carbon dioxide
fibre suspension
calcium carbonate
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
EP01114533A
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German (de)
English (en)
Other versions
EP1172477A1 (fr
Inventor
Jörg Dr. Rheims
Klaus Dölle
Oliver Heise
Werner Witek
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.)
Voith Patent GmbH
Original Assignee
Voith Paper Patent GmbH
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Filing date
Publication date
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Publication of EP1172477A1 publication Critical patent/EP1172477A1/fr
Application granted granted Critical
Publication of EP1172477B1 publication Critical patent/EP1172477B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
    • D21H11/20—Chemically or biochemically modified fibres
    • 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
    • D21C9/001—Modification of pulp properties
    • D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
    • D21C9/004—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives inorganic compounds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/70—Inorganic compounds forming new compounds in situ, e.g. within the pulp or paper, by chemical reaction with other substances added separately
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/675—Oxides, hydroxides or carbonates

Definitions

  • the invention relates to a method for loading in a fiber suspension contained fibers with calcium carbonate through a chemical reaction. she further relates to a device specified in the preamble of claim 14 Art.
  • Fibrous suspensions of the type mentioned serve in particular the Paper and / or cardboard manufacturing.
  • the strength play optical properties and the processability of the end product are crucial Role.
  • European patent application EP 0 791 685 A2 discloses a method for Application of fillers in a pulp by means of a single im Batch process operated reactor.
  • the reactor is powered by a Control unit controlled / regulated.
  • PCT application WO 97/01670 A1 discloses a filler for paper manufacture and a process for producing this filler.
  • the manufacturing process is again a batch process running in a single reactor formed, the progress of the reaction by measuring the pH and the consistency of the fiber suspension is monitored.
  • European patent application EP 0 969 141 A1 discloses a method for producing satinized paper with a stock preparation, paper formation and a satinizing process.
  • a fiber loading is carried out, in which materials are transported into the paper fibers that are suitable for increasing the volume of the fibers in their transverse extent by building up expanding layers of solid material and that in the satinizing process a pressure of at least 30 N / mm 2 is applied.
  • the aim of the invention is the method and the device of the aforementioned Kind especially with regard to an optimal reaction balance, the best possible response speed and one possible to further optimize the flexibility of production performance.
  • this object is achieved according to the invention in that the fiber suspension treated in this way in several reactors with another, pure carbon dioxide or carbon dioxide containing medium is applied and that the fiber suspension has a controllable consistency of about 15% to about 40%, preferably from about 20% to about 25%.
  • the calcium hydroxide preferably in liquid form (milk of lime) is added. This means that may not necessarily be in or on the fibers of the fiber suspension stored or deposited water for Start and end of the chemical reaction is necessary.
  • dry fiber surfaces can mean all wetted surfaces of the individual fibers. In particular, this also includes the case where the fibers both on their outer surface and inside (lumen) be loaded with calcium carbonate.
  • the fibers are loaded with the filler calcium carbonate, whereby the attachment to the wetted fiber surfaces by a so-called “fiber Loading TM "process is as described as such in US-A-5,223,090 is.
  • fiber Loading TM the carbon dioxide reacts with the calcium hydroxide to water and calcium carbonate.
  • At least some of the reactors are connected in parallel. This results in addition to the advantages already mentioned an optimal possibility of adapting the production output.
  • the device according to the invention is accordingly characterized in that that it comprises several reactors in which the calcium oxide and / or calcium hydroxide spiked fiber suspension with pure carbon dioxide or with a medium containing carbon dioxide can be acted upon.
  • FIG. 10 The only figure in the drawing shows a schematic representation of a purely exemplary embodiment of a device 10 for loading fibers contained in a fiber suspension with calcium carbonate (CaCO 3 ).
  • this device 10 serves for the addition of calcium carbonate to the wetted fiber surfaces of the fiber material.
  • This loading of the fibers can take place in particular in accordance with the "Fiber Loading TM" process mentioned above.
  • the device 10 comprises a plurality of reactors 12 i , in which the fiber suspension mixed with calcium oxide (CaO) and / or calcium hydroxide (Ca (OH) 2 ) can be acted upon with pure carbon dioxide (CO 2 ) or with a medium containing carbon dioxide (CO 2 ).
  • the reactors 12 i can be connected in series and / or in parallel. A series connection, a parallel connection or a combination of such a series and parallel connection of the actuators 12 i is thus possible.
  • parallel reactors the production of calcium carbonate with different crystal types and the mixing together is preferably made possible after the completion of the respective production process.
  • a fluffer 14 can be provided in which the fiber material of the fiber suspension is split with the aim of increasing the specific surface area of the fiber material in such a way that the educts are accessible is optimized to the fiber material surface. This results in a further improvement of the homogenization and the "Fiber Loading TM" process is optimized accordingly.
  • the first fluffer 14 is provided between a refiner 16 and at least one reactor 12 i .
  • a refiner 20 follows the tank 18, after which it goes to the paper machine PM.
  • the correspondingly pretreated can be treated via a pressure reducing device 38 Fiber material 26 then continuously or discontinuously one or more the further processing serving headboxes of the paper machine in question 40 are supplied.
  • the pressure reducing device 38 can, for example a valve, in particular a rotary valve, a rotary screw, a sectioned one Lock, tank, relaxation device, e.g. a nozzle or turbine, and / or the like.
  • calcium carbonate (CaCO 3 ) can thus be deposited on the wetted fiber surfaces of the fiber material, this loading of the fibers in particular again being able to take place in accordance with the "Fiber Loading TM" process mentioned above.
  • the medium containing calcium oxide and / or calcium hydroxide can be added to the fiber material in such a way that at least some of it can associate with the water present in the fiber material, ie between the fibers, in the hollow fibers and in their walls.
  • the following chemical reaction occurs:
  • the pH value can be used to monitor and / or regulate the chemical reaction the pulp suspension can be measured.
  • the pH is preferred adjustable in a range from about 5.5 to about 10.5.
  • the ash content of the fiber suspension is, for example, in one range adjustable from about 1% to about 70%.
  • the carbon dioxide can in particular be supplied in gaseous form.
  • the temperature of the carbon dioxide supplied is advantageously in a range of adjustable from about -10 ° to about 250 ° C.
  • pressure control in the range from 0.1 bar to 20 bar is possible.
  • optical properties for example whiteness, brightness, opacity, Color locus, light scattering coefficient can be used.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Claims (17)

  1. Procédé pour charger en carbonate de calcium, par une réaction chimique, des fibres contenues dans une suspension de matière fibreuse,
    dans lequel un fluide qui contient de l'oxyde de calcium et/ou de l'hydroxyde de calcium est ajouté à la suspension de matière fibreuse,
    caractérisé en ce que
    la suspension de matière fibreuse ainsi traitée reçoit dans plusieurs réacteurs (12i) du dioxyde de carbone pur ou un autre fluide qui contient du dioxyde de carbone et en ce que
    la suspension de matière fibreuse présente une densité (consistance) régulable de matière d'environ 15% à environ 40% et de préférence d'environ 20% à environ 25%.
  2. Procédé selon la revendication 1, caractérisé en ce qu'au moins une partie des réacteurs (12i) est raccordée en série.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'au moins une partie des réacteurs (12i) est raccordée en parallèle.
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'il prévoit une combinaison d'un raccordement en série et d'un raccordement en parallèle des réacteurs (12i).
  5. Procédé selon la revendication 3 ou 4, caractérisé en ce que dans les réacteurs (12i) raccordés en parallèle, on prépare du carbonate de calcium (CaCO3) qui présente différents types de cristaux qui sont de préférence mélangés ensemble après la fin de l'opération de préparation concernée.
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que pour la surveillance et/ou la régulation de la réaction chimique, on mesure la valeur du pH de la suspension de matière fibreuse, cette valeur du pH étant réglée dans une plage d'environ 5,5 à environ 10,5.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que la teneur en cendres de la suspension de matière fibreuse est réglée dans une plage d'environ 1% à environ 70%.
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce que le dioxyde de carbone est apporté sous forme gazeuse.
  9. Procédé selon l'une des revendications précédentes, caractérisé en ce que la température du dioxyde de carbone apporté est réglée dans une plage d'environ -20° à environ 100° C.
  10. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'il utilise la luminosité comme indicateur pour la régulation de la réaction chimique.
  11. Procédé selon l'une des revendications précédentes, caractérisé en ce que la valeur du pH, la teneur en cendres et/ou la teneur en carbonate de calcium sont utilisées comme grandeurs de réglage pour la régulation de la réaction chimique.
  12. Procédé selon l'une des revendications précédentes, caractérisé par au moins l'une des étapes suivantes:
    surveillance de réactions partielles
    branchement et/ou débranchement de réacteurs partiels et
    variation des paramètres de fonctionnement des réacteurs partiels.
  13. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'il prévoit une régulation de pression dans la plage d'environ 0,1 bar à environ 20 bars.
  14. Dispositif (10) pour le chargement en carbonate de calcium, par une réaction chimique, de fibres contenues dans une suspension de matière fibreuse, en particulier en vue de la mise en oeuvre du procédé selon l'une des revendications précédentes, caractérisé en ce qu'il comprend plusieurs réacteurs (12i) dans lesquels la suspension de matière fibreuse qui a réagi avec l'oxyde de calcium et/ou l'hydroxyde de calcium reçoit du dioxyde de carbone pur ou un fluide qui contient du dioxyde de carbone.
  15. Dispositif selon la revendication 14, caractérisé en ce qu'au moins une partie des réacteurs (12i) est raccordée en série.
  16. Dispositif selon les revendications 14 ou 15, caractérisé en ce qu'au moins une partie des réacteurs (12i) est raccordée en parallèle.
  17. Dispositif selon l'une des revendications 14 à 16, caractérisé en ce qu'il prévoit une combinaison d'un raccordement en série et d'un raccordement en parallèle des réacteurs (12i).
EP01114533A 2000-07-13 2001-06-16 Procédé et dispositif pour le chargement de fibres avec carbonate de calcium Expired - Lifetime EP1172477B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10033978A DE10033978A1 (de) 2000-07-13 2000-07-13 Verfahren sowie Vorrichtung zum Beladen von Fasern mit Calciumcarbonat
DE10033978 2000-07-13

Publications (2)

Publication Number Publication Date
EP1172477A1 EP1172477A1 (fr) 2002-01-16
EP1172477B1 true EP1172477B1 (fr) 2004-09-08

Family

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EP01114533A Expired - Lifetime EP1172477B1 (fr) 2000-07-13 2001-06-16 Procédé et dispositif pour le chargement de fibres avec carbonate de calcium

Country Status (4)

Country Link
US (3) US6599390B2 (fr)
EP (1) EP1172477B1 (fr)
AT (1) ATE275660T1 (fr)
DE (2) DE10033978A1 (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10033978A1 (de) * 2000-07-13 2002-01-24 Voith Paper Patent Gmbh Verfahren sowie Vorrichtung zum Beladen von Fasern mit Calciumcarbonat
US20050121157A1 (en) * 2002-02-28 2005-06-09 Klaus Doelle Method for the fabrication of a fiber web
DE10208983A1 (de) * 2002-02-28 2003-09-11 Voith Paper Patent Gmbh Verfahren zur Herstellung einer Faserbahn
US7056419B2 (en) * 2002-09-30 2006-06-06 American Air Liquide, Inc. Methods for modifying electrical properties of papermaking compositions using carbon dioxide
DE10302783A1 (de) * 2003-01-24 2004-08-12 Voith Paper Patent Gmbh Verfahren zur Erzeugung einer für die Herstellung einer Tissue- oder Hygienebahn bestimmten Faserstoffsuspension
DE10317719A1 (de) * 2003-04-17 2004-11-11 Voith Paper Patent Gmbh Verfahren zum Einstellen des Aschegehalts einer Faserstoffsuspension und Anordnung zur Durchführung des Verfahrens
DE10325688A1 (de) * 2003-06-06 2004-12-23 Voith Paper Patent Gmbh Verfahren zum Beladen einer Faserstoffsuspension mit Kalziumkarbonat und Anordnung zur Durchführung des Verfahrens
DE10335751A1 (de) * 2003-08-05 2005-03-03 Voith Paper Patent Gmbh Verfahren zum Beladen einer Faserstoffsuspension und Anordnung zur Durchführung des Verfahrens
FI120462B (fi) * 2003-08-06 2009-10-30 Upm Kymmene Corp Menetelmä ja laitteisto kalsiumkarbonaatin saostamiseksi kuitumateriaaliin
DE10347920A1 (de) * 2003-10-15 2005-05-19 Voith Paper Patent Gmbh Verfahren und Vorrichtung zum Beladen einer Faserstoffsuspension
DE10357437A1 (de) * 2003-12-09 2005-07-07 Voith Paper Patent Gmbh Verfahren zum Beladen einer Faserstoffsuspension und Anordnung zur Durchführung des Verfahrens
EP1699739A1 (fr) * 2003-12-16 2006-09-13 Imerys Pigments, Inc. Procede et systeme de tirage de cristaux de grande taille de carbonate de calcium precipite
DE102004028047A1 (de) * 2004-06-09 2005-12-29 Voith Paper Patent Gmbh Verfahren und Maschine zur Herstellung einer Faserstoffbahn
GB0413068D0 (en) * 2004-06-11 2004-07-14 Imerys Minerals Ltd Treatment of pulp
DE102004045089A1 (de) * 2004-09-17 2006-03-23 Voith Paper Patent Gmbh Verfahren und Vorrichtung zum Beladen einer Faserstoffsuspension
FI122786B (fi) * 2007-07-20 2012-06-29 Upm Kymmene Oyj Synteettisten hiilivetyketjujen valmistuksessa syntyvän hiilidioksidin käyttö
FI124831B (fi) * 2010-03-10 2015-02-13 Upm Kymmene Oyj Menetelmä ja reaktori kalsiumkarbonaatin in-line-valmistamiseksi paperimassavirtaukseen
FI125826B (fi) * 2010-08-04 2016-02-29 Nordkalk Oy Ab Menetelmä paperin tai kartongin valmistamiseksi
FI125278B (fi) * 2010-08-20 2015-08-14 Upm Kymmene Corp Menetelmä kalsiumkarbonaatin saostamiseksi sekä menetelmän käyttö
FI126072B (en) 2013-03-18 2016-06-15 Linde Ag Fiber filling procedure
EP2786967A1 (fr) * 2013-04-03 2014-10-08 HF Biotec Berlin GmbH Procédé et installation de fabrication de carbonate de calcium cristallin en utilisant deux gaz combinés ayant une teneur en CO2 différente

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DE10033978A1 (de) * 2000-07-13 2002-01-24 Voith Paper Patent Gmbh Verfahren sowie Vorrichtung zum Beladen von Fasern mit Calciumcarbonat

Also Published As

Publication number Publication date
US20020007925A1 (en) 2002-01-24
ATE275660T1 (de) 2004-09-15
DE50103511D1 (de) 2004-10-14
US20020092636A1 (en) 2002-07-18
US6599390B2 (en) 2003-07-29
EP1172477A1 (fr) 2002-01-16
US20030121624A1 (en) 2003-07-03
DE10033978A1 (de) 2002-01-24
US6755941B2 (en) 2004-06-29
US6881298B2 (en) 2005-04-19

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