WO2002088466A1 - Procede et dispositif pour charger des fibres contenues dans une suspension fibreuse avec du carbonate de calcium - Google Patents

Procede et dispositif pour charger des fibres contenues dans une suspension fibreuse avec du carbonate de calcium Download PDF

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Publication number
WO2002088466A1
WO2002088466A1 PCT/EP2002/001603 EP0201603W WO02088466A1 WO 2002088466 A1 WO2002088466 A1 WO 2002088466A1 EP 0201603 W EP0201603 W EP 0201603W WO 02088466 A1 WO02088466 A1 WO 02088466A1
Authority
WO
WIPO (PCT)
Prior art keywords
carbon dioxide
calcium carbonate
liquid
reaction
reactor
Prior art date
Application number
PCT/EP2002/001603
Other languages
German (de)
English (en)
Inventor
Klaus Doelle
Oliver Heise
Original Assignee
Voith Paper Patent Gmbh
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 Voith Paper Patent Gmbh filed Critical Voith Paper Patent Gmbh
Priority to CA002445658A priority Critical patent/CA2445658A1/fr
Priority to EP02701279A priority patent/EP1386036A1/fr
Publication of WO2002088466A1 publication Critical patent/WO2002088466A1/fr
Priority to US10/691,247 priority patent/US20040154770A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/18—Carbonates
    • C01F11/181—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by control of the carbonation conditions
    • 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 and a device for loading fibers contained in a fiber suspension with calcium carbonate by a chemical precipitation reaction.
  • a "Fiber Loading TM” process for example by a chemical precipitation reaction, i.e. in particular by means of a so-called “Fiber Loading TM” process, as described, inter alia, in US-A-5,223,090.
  • a chemical precipitation reaction i.e. in particular by means of a so-called "Fiber Loading TM” process
  • at least one additive, in particular filler is embedded on the wetted fiber surfaces of the fiber material.
  • the fibers can be loaded with calcium carbonate, for example.
  • calcium oxide and / or calcium hydroxide is added to the moist, disintegrated fiber material in such a way that at least a part thereof is associated with the water present in the fiber material.
  • the fiber material treated in this way is then exposed to carbon dioxide.
  • the aim of the invention is to provide an improved method and an improved device of the type mentioned at the outset, with which in particular the reaction temperature can be better controlled.
  • This object is achieved according to the invention by a method for loading fibers contained in a fiber suspension with calcium carbonate by means of a chemical precipitation reaction, in which the fiber suspension contains calcium oxide and / or calcium hydroxide is added and at least partially liquid carbon dioxide is injected into the reactor to trigger the precipitation reaction, thereby ensuring that the starting materials calcium oxide or calcium hydroxide are converted into the reaction products calcium carbonate and water.
  • the calcium hydroxide medium When the calcium oxide and / or the calcium hydroxide medium is added to the fiber suspension, a chemical reaction with an exothermic property takes place, the calcium hydroxide preferably being added in liquid form (milk of lime). This means that the water which is possibly stored in or on the fibers of the fiber suspension is not absolutely necessary for the start and the course of the chemical reaction.
  • the reaction temperature can be controlled in the desired manner by adding liquid carbon dioxide.
  • the injected liquid carbon dioxide is partly converted into a gaseous medium and partly into a solid medium, namely dry ice.
  • the solid medium consists of very small particles (particle mist) with a small diameter of less than 3 mm, which then evaporate very quickly and change from the solid to the gaseous state.
  • the process is exothermic.
  • dry ice i.e. solid carbon dioxide, which has the ability to go directly from the solid state to the gaseous state without forming a liquid phase, does not require the use of energy to vaporize the liquid carbon dioxide.
  • the excess reaction energy can be used to convert carbon dioxide from the solid state to the gaseous state. This not only results in a new method for producing calcium carbonate, it also results in an optimal sequence for loading fibers.
  • the carbon dioxide can only be added in liquid form or partly in liquid form and partly in gaseous form. If the carbon dioxide is added partly in liquid form and partly in gaseous form, the reaction temperature and thus the crystal form is preferably set via the ratio of the volume of the liquid carbon dioxide component to the volume of the gaseous carbon dioxide component.
  • the differential pressure P is preferably selected so that it is in a range 0 ⁇ P ⁇ ⁇ 100 bar and preferably in a range 1 ⁇ P ⁇ 50 bar.
  • reaction temperature is less than or equal to 45 ° C, a rhombohedral crystal form of the precipitated calcium carbonate results. On the other hand, if this reaction temperature is above 45 ° C, a scalalenohedral crystal form of the precipitated calcium carbonate results. Depending on the range in which the reaction temperature is maintained, one or the other crystal form can thus be obtained.
  • Liquid carbon dioxide in pressure containers, for example in bottles, is usually under a high pressure of up to about 300 bar.
  • the carbon dioxide is now advantageously expanded into the reactor space, so that it cools down and becomes partly solid, ie it changes from the liquid to the solid state, and iced up. This creates a cooling effect, which affects the temperature of the exothermic equilibrium reaction accordingly.
  • the temperature, ie the cooling effect of the liquid carbon dioxide can be adjusted in the desired manner in addition to the ratio of the volume of the liquid carbon dioxide fraction to the volume of the gaseous volume fraction via the differential pressure between the liquid carbon dioxide and the reaction space. The greater the differential pressure, the greater the cooling effect if the same amounts of carbon dioxide are considered.
  • the liquid or gaseous carbon dioxide is advantageously injected into the reactor in each case via a valve.
  • dry fiber surfaces can encompass all wetted surfaces of the individual fibers. This also includes in particular the case in which the fibers are loaded with calcium carbonate or any other precipitation product both on their outer surface and in their interior (lumen).
  • the fibers can be loaded with the filler calcium carbonate, for example, the attachment to the wetted fiber surfaces by a
  • the so-called “Fiber Loading TM” process takes place as it is described as such in US-A-5 223 090.
  • the carbon dioxide reacts with the calcium hydroxide to form water and calcium carbonate.
  • the device according to the invention for loading fibers contained in a fiber suspension with calcium carbonate by means of a chemical precipitation reaction accordingly comprises means by means of which calcium oxide and / or calcium hydroxide can be added to the fiber suspension, and a reactor and means by means of which at least partially liquid carbon dioxide is triggered to trigger the precipitation reaction the reactor is injectable, thereby ensuring that the starting materials calcium oxide or calcium hydroxide are converted into the reaction products calcium carbonate and water.
  • This device 10 comprises means 14 via which calcium oxide CaO and / or calcium hydroxide Ca (OH) 2 can be added to the fiber suspension.
  • It also includes a "Fiber Loading TM" reactor and means such as a valve 18, via which liquid carbon dioxide CO 2 can be injected into the reactor 16.
  • a "Fiber Loading TM" reactor and means such as a valve 18, via which liquid carbon dioxide CO 2 can be injected into the reactor 16.
  • the carbon dioxide can only be added in liquid form or partly in liquid form and partly in gaseous form. In the latter case there is another Valve 20 is provided, via which gaseous carbon dioxide CO 2 can be fed to the reactor 16.
  • the device 10 can comprise a control unit 22 for regulating the reaction temperature T R and a ratio control 24, via which the ratio (Vol f i Qssjg / Vol gaseous ) of the volume Vol liquid of the liquid carbon dioxide component to the volume Vol gaseous of the gaseous carbon dioxide component for a corresponding setting of the reaction temperature T R can be varied accordingly.
  • a ratio controller 26 acted upon by the ratio controller 24 can be provided, which determines the ratio of the flows through the two valves 18, 20 and compares it with the desired value specified by the ratio controller 24 in order to then adjust this ratio accordingly.
  • the control unit 12 receives the actual value, for example the reaction temperature T R , via a corresponding measuring device 28. This actual value is compared in the control unit 22 with a target value 30, whereupon the ratio control 24 is acted upon accordingly in order to supply the ratio controller 26 with a corresponding ratio target value.
  • the reactor 16 then supplies, for example, fibrous material 32 loaded with calcium carbonate CaCO 3 .
  • Calcium oxide and / or calcium hydroxide (slaked lime) is therefore 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 sets the following chemical reaction: CaO + H 2 O ⁇ Ca (OH) 2
  • the carbon dioxide (CO 2 ) is then applied to the fiber material in such a way that calcium carbonate (CaCO 3 ) is largely deposited on the wetted fiber surfaces.
  • Fiber Loading TM Ca (OH) 2 + CO 2 ⁇ CaCO 3 + H 2 O

Landscapes

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

Abstract

L'invention concerne un procédé pour charger des fibres contenues dans une suspension fibreuse par précipitation avec du carbonate de calcium. Selon ce procédé, de l'oxyde de calcium et/ou de l'hydroxyde de calcium est ajouté à la suspension fibreuse et, pour provoquer la précipitation, du dioxyde de carbone au moins partiellement liquide est injecté dans le réacteur, les matières de départ que sont l'oxyde de calcium et/ou de l'hydroxyde se transformant ainsi en produits de réaction, à savoir en carbonate de calcium et en eau. Selon l'invention, le dioxyde de carbone ajouté est soit entièrement liquide, soit en partie liquide et en partie gazeux. La présente invention porte également sur un dispositif servant à la charge des fibres.
PCT/EP2002/001603 2001-04-27 2002-02-15 Procede et dispositif pour charger des fibres contenues dans une suspension fibreuse avec du carbonate de calcium WO2002088466A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002445658A CA2445658A1 (fr) 2001-04-27 2002-02-15 Procede et dispositif pour charger des fibres contenues dans une suspension fibreuse avec du carbonate de calcium
EP02701279A EP1386036A1 (fr) 2001-04-27 2002-02-15 Procede et dispositif pour charger des fibres contenues dans une suspension fibreuse avec du carbonate de calcium
US10/691,247 US20040154770A1 (en) 2001-04-27 2003-10-22 Method and device for loading fibers contained in a fibrous suspension with calcium carbonate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10120635A DE10120635A1 (de) 2001-04-27 2001-04-27 Verfahren und Vorrichtung zum Beladen von Fasern mit Calciumcarbonat
DE10120635.6 2001-04-27

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/691,247 Continuation US20040154770A1 (en) 2001-04-27 2003-10-22 Method and device for loading fibers contained in a fibrous suspension with calcium carbonate

Publications (1)

Publication Number Publication Date
WO2002088466A1 true WO2002088466A1 (fr) 2002-11-07

Family

ID=7682916

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/001603 WO2002088466A1 (fr) 2001-04-27 2002-02-15 Procede et dispositif pour charger des fibres contenues dans une suspension fibreuse avec du carbonate de calcium

Country Status (5)

Country Link
US (1) US20040154770A1 (fr)
EP (1) EP1386036A1 (fr)
CA (1) CA2445658A1 (fr)
DE (1) DE10120635A1 (fr)
WO (1) WO2002088466A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004053227A2 (fr) * 2002-12-09 2004-06-24 Specialty Minerals (Michigan) Inc. Materiau composite charge-fibre
WO2006032333A1 (fr) * 2004-09-17 2006-03-30 Voith Patent Gmbh Procede et dispositif de charge d'une suspension de matiere fibreuse
WO2007006369A1 (fr) * 2005-07-14 2007-01-18 Voith Patent Gmbh Procede et dispositif d'introduction d'une charge dans des fibres contenues dans une suspension de matiere fibreuse

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE10347920A1 (de) * 2003-10-15 2005-05-19 Voith Paper Patent Gmbh Verfahren und Vorrichtung zum Beladen einer Faserstoffsuspension
EP1795502A1 (fr) * 2005-12-12 2007-06-13 SOLVAY (Société Anonyme) Particules de carbonate de calcium précipité, leur procédé de préparation et leur utillisation comme charges
FI126072B (en) 2013-03-18 2016-06-15 Linde Ag Fiber filling procedure
US20230140807A1 (en) * 2021-11-03 2023-05-04 Biosenta Inc. Method and Apparatus for Producing Core-Shell Calcium Hydroxide-Calcium Carbonate Particles

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5223090A (en) * 1991-03-06 1993-06-29 The United States Of America As Represented By The Secretary Of Agriculture Method for fiber loading a chemical compound
US5643415A (en) * 1991-06-04 1997-07-01 Wise; Kenneth J. Precipitated calcium carbonate particles from basic calcium carbonate
EP0791685A2 (fr) * 1996-02-20 1997-08-27 Metsä-Serla Oy Procédé d'addition de charges dans une suspension de fibres cellulosiques
EP0799797A1 (fr) * 1996-04-03 1997-10-08 UNITECHNIK-THURNER Anlagenbaugesellschaft mbH Le procédé pour la production de carbonate de calcium précipité
US5679220A (en) * 1995-01-19 1997-10-21 International Paper Company Process for enhanced deposition and retention of particulate filler on papermaking fibers
WO1999051525A1 (fr) * 1998-04-07 1999-10-14 Fp-Pigments Oy Procede et appareil de production de carbonate de calcium precipite
WO2000047817A1 (fr) * 1999-02-08 2000-08-17 Aga Aktiebolag Charge stabilisee, sa production et son utilisation
WO2001066467A1 (fr) * 2000-03-06 2001-09-13 3P Technologies Ltd. Aragonite precipitee et procede de production associe

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US35460A (en) * 1862-06-03 Improvement in coal-oil and other lamps
US5665205A (en) * 1995-01-19 1997-09-09 International Paper Company Method for improving brightness and cleanliness of secondary fibers for paper and paperboard manufacture
FI105052B (fi) * 1998-07-08 2000-05-31 Valmet Corp Menetelmä paperin valmistamiseksi, sovitelma menetelmän toteuttamiseksi ja menetelmän avulla valmistettu paperituote
WO2000078874A1 (fr) * 1999-06-18 2000-12-28 Imerys Pigments, Inc. Matieres pigmentaires; preparation et utilisation associees
US6355138B1 (en) * 2000-02-24 2002-03-12 Voith Sulzer Paper Technology North America, Inc. Method of chemically loading fibers in a fiber suspension
DE10033979A1 (de) * 2000-07-13 2002-01-24 Voith Paper Patent Gmbh Verfahren zum Beladen von Fasern mit Calciumcarbonat
US6413365B1 (en) * 2001-07-11 2002-07-02 Voith Paper Patent Gmbh Method of loading a fiber suspension with calcium carbonate

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5223090A (en) * 1991-03-06 1993-06-29 The United States Of America As Represented By The Secretary Of Agriculture Method for fiber loading a chemical compound
US5643415A (en) * 1991-06-04 1997-07-01 Wise; Kenneth J. Precipitated calcium carbonate particles from basic calcium carbonate
US5679220A (en) * 1995-01-19 1997-10-21 International Paper Company Process for enhanced deposition and retention of particulate filler on papermaking fibers
EP0791685A2 (fr) * 1996-02-20 1997-08-27 Metsä-Serla Oy Procédé d'addition de charges dans une suspension de fibres cellulosiques
EP0799797A1 (fr) * 1996-04-03 1997-10-08 UNITECHNIK-THURNER Anlagenbaugesellschaft mbH Le procédé pour la production de carbonate de calcium précipité
WO1999051525A1 (fr) * 1998-04-07 1999-10-14 Fp-Pigments Oy Procede et appareil de production de carbonate de calcium precipite
WO2000047817A1 (fr) * 1999-02-08 2000-08-17 Aga Aktiebolag Charge stabilisee, sa production et son utilisation
WO2001066467A1 (fr) * 2000-03-06 2001-09-13 3P Technologies Ltd. Aragonite precipitee et procede de production associe

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004053227A2 (fr) * 2002-12-09 2004-06-24 Specialty Minerals (Michigan) Inc. Materiau composite charge-fibre
WO2004053227A3 (fr) * 2002-12-09 2004-08-19 Specialty Minerals Michigan Materiau composite charge-fibre
WO2006032333A1 (fr) * 2004-09-17 2006-03-30 Voith Patent Gmbh Procede et dispositif de charge d'une suspension de matiere fibreuse
WO2007006369A1 (fr) * 2005-07-14 2007-01-18 Voith Patent Gmbh Procede et dispositif d'introduction d'une charge dans des fibres contenues dans une suspension de matiere fibreuse

Also Published As

Publication number Publication date
CA2445658A1 (fr) 2002-11-07
DE10120635A1 (de) 2002-10-31
US20040154770A1 (en) 2004-08-12
EP1386036A1 (fr) 2004-02-04

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