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EP1676001A1 - Procede et dispositif pour charger une suspension fibreuse - Google Patents

Procede et dispositif pour charger une suspension fibreuse

Info

Publication number
EP1676001A1
EP1676001A1 EP04791189A EP04791189A EP1676001A1 EP 1676001 A1 EP1676001 A1 EP 1676001A1 EP 04791189 A EP04791189 A EP 04791189A EP 04791189 A EP04791189 A EP 04791189A EP 1676001 A1 EP1676001 A1 EP 1676001A1
Authority
EP
European Patent Office
Prior art keywords
fiber
carbon dioxide
flue gas
loading
suspension
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.)
Ceased
Application number
EP04791189A
Other languages
German (de)
English (en)
Inventor
Klaus Dölle
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
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
Publication of EP1676001A1 publication Critical patent/EP1676001A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/06—Treatment of pulp gases; Recovery of the heat content of the gases; Treatment of gases arising from various sources in pulp and paper mills; Regeneration of gaseous SO2, e.g. arising from liquors containing sulfur compounds

Definitions

  • the invention relates to a method for loading a fiber suspension with calcium carbonate.
  • DE 100 33 978 A1 describes a method for loading a fiber suspension, in which a medium containing calcium oxide and / or calcium hydroxide and pure carbon dioxide or a medium containing carbon dioxide are added to the fiber suspension.
  • a combustion process is used for the production of carbon dioxide, which is in a process connection with the device for producing the fiber suspension.
  • DE 101 20 637 A1 discloses a method for loading a fiber suspension, in which the carbon dioxide is generated from the exhaust gas of a fuel or by lime burning.
  • the carbon dioxide has a degree of purity between 65 and 99% and is, for example, in the exhaust gas of a power plant, an internal combustion engine, a boiler or a plant Direct burning of fossil fuel included.
  • this object is achieved by a process with the following process steps: introduction of calcium hydroxide in liquid or dry form or of calcium oxide into the fiber suspension, introduction of a flue gas containing carbon dioxide into the fiber suspension, precipitation of calcium carbonate by the carbon dioxide contained in the flue gas and - removing excess flue gas.
  • DIP deinked paper
  • secondary fiber material bleached or unbleached pulp
  • wood pulp bleached or unbleached sulfate pulp
  • manufacturing waste, linen, cotton, and / or hemp fibers predominantly cigarette paper
  • the fiber loading technology enables filler, in particular calcium carbonate, to be precipitated directly in the stock preparation of a paper mill, which is evenly distributed and deposited on, in and between the fibers, as well as being subjected to a milling treatment during the precipitation process at the same time.
  • the filler material used in the prior art is replaced by the filler material produced with the fiber loading combination process technology.
  • the field of application of the filler produced with the fiber loading combination process technology extends to the fields of paper production of all types of paper including cigarette paper types, filter paper types, sack kraft paper types and cardboard and packaging paper types which have a filler content between 1 and 60% and / or have a white top layer with a filler content between 1 and 60%.
  • the loaded and manufactured types of paper can be made from recycled paper, deinked paper (DIP), secondary fiber, bleached or unbleached pulp, wood pulp, bleached or unbleached sulfate pulp, manufacturing waste, linen, cotton and / or hemp fiber (mainly for cigarette paper) and / or any paper stock is made on a paper machine regardless of whether the end product contains filler.
  • DIP deinked paper
  • secondary fiber bleached or unbleached pulp
  • wood pulp bleached or unbleached sulfate pulp
  • manufacturing waste linen, cotton and / or hemp fiber (mainly for cigarette paper) and / or any paper stock is made on a paper machine regardless of whether the end product contains filler.
  • Fibrous fabricated with fiber loading combination process technology generally has a higher drainage property than others
  • the drainage capacity is 5 to 100 ml CSF or 0.2 to 15 ° SR depending on the required degree of grinding. additionally
  • the free filler can be switched on by means of an additional washing process before the grinding process, after the grinding process or after passing through the headbox or before feeding to the paper machine. This concerns the filler, which is not deposited on or in the fibers and can be washed out accordingly.
  • the fibers themselves are filled with filler inside and out, so that the positive effects of fiber loading technology can be exploited.
  • the fiber loading technology can be used before or after the grinding process, depending on the requirements placed on the end product.
  • the fiber loading combination technology enables a higher degree of grinding to be achieved in an energy-efficient manner compared to the prior art, since up to 50% of the grinding energy can be saved; this has a positive influence in particular for all types of paper that go through a grinding process in their manufacture or have a high to very high degree of grinding, such as.
  • the efficiency can be increased for all types of paper.
  • Higher water retention i.e. H. 1 to 25%, has a positive influence on the rewetting, which is less in the manufacturing process, and on the printability of the fibrous web produced.
  • a further advantage for all types of paper is the higher degree of whiteness or the optical values, which are up to 15 brightness points higher, which are to be emphasized in the production of all forms of paper and cardboard with or without a white top layer.
  • the use of fiber loading technology also improves the optical values, for example when using de-inking water, by up to 15 brightness points.
  • Another advantage of fiber loading in the paper types listed above is that a calendering is provided for special applications, and so-called blackening through the use of fiber loading through the incorporation of FL particles in, around and on the Fiber is suppressed and eliminated.
  • the carbon dioxide emissions of a paper mill can be reduced by using the carbon dioxide contained in the flue gas for the fiber loading process.
  • the flue gas used according to a method according to the invention has, for example, a carbon dioxide content of between 2 and 30%.
  • the flue gas can be cleaned before being introduced into the fiber loading process, for example with a washing system as described in DE 101 20 637 A1 [sections 0010 - 0011, washing tower 14 in the single figure and associated description] is.
  • a grinding energy in the range between 0.1 and 300 kWh per ton of dry fiber is introduced during the loading or loading of the fiber suspension with calcium carbonate.
  • the loading and grinding can preferably be carried out in separate and independent process steps in one apparatus.
  • aqueous fibrous material in particular aqueous fibrous material, of 0.1 to 20% consistency, preferably between 2 and 8%, is used as the starting material.
  • calcium hydroxide is preferably mixed into the aqueous fibrous material, in particular the fibrous material, the filler having a solids content of between 0.01 and 60%.
  • the filler it is also possible to use a starting material other than calcium hydroxide or calcium oxide to form the filler.
  • the calcium hydroxide is mixed in by means of a static mixer or by means of a feed hopper.
  • the carbon dioxide is advantageously converted into a moist fiber suspension with a preferred consistency of 0.1 to 60% Reaction parameters mixed in.
  • Calcium carbonate precipitates in a carbon dioxide gas atmosphere.
  • the grinding process is carried out in one apparatus, the crystallizer, simultaneously with the loading process (fiber loading); a grinding energy is used which is in the range between 0.1 and 300 kWh per ton of dry fiber; a short reaction time of the calcium hydroxide with the carbon dioxide is important.
  • the energy input i.e. H. the amount of heat or the heating of the fiber suspension for the production of crystals in various forms is important for the invention.
  • aqueous fiber material with a fiber content between 0.01 and 60% serves as the starting material.
  • a static mixer, a refiner, a disperger and / or a fluffer FLPCC reactor is used as the reactor, the fiber content, in particular the fiber content, in the case of a static mixer between 0.01 and 15%; is between 2 to 8% (low consistency grinding) and between 20 to 35% (high consistency grinding) for a refiner (grinder) and between 2 and 40% for a disperser and between 15 and 60% for a fluffer FLPCC reactor ,
  • the dilution water is supplied before, during or after the addition of carbon dioxide or calcium hydroxide or calcium oxide.
  • Calcium carbonate precipitates when carbon dioxide is mixed into a calcium hydroxide solution or suspension.
  • the precipitation reaction takes place in exactly the same way if calcium hydroxide is added to water under a carbon dioxide atmosphere.
  • Dilution water can be added before, during or after the addition of carbon dioxide or calcium hydroxide.
  • An energy expenditure of between 0.3 and 8 kWh / t is advantageously used for the precipitation reaction, in particular between 0.5 and 4 kWh / t, if no grinding machine is used.
  • the process temperature is between -15 and 120 ° C, in particular between 20 and 90 ° C.
  • rhombohedral, scalohedral and spherical crystals can be produced.
  • the crystals advantageously have dimensions between 0.05 and 5 ⁇ m, in particular between 0.3 and 2.5 ⁇ m.
  • Static and / or movable, in particular rotating, mixing elements can be used.
  • the process is advantageously carried out in a pressure range between 0 and 15 bar, in particular between 0 and 6 bar.
  • the pH value is advantageously between 6 and 10, in particular between 6.5 and 8.5.
  • the reaction time is advantageously between 0.05 seconds and 1 minute, in particular between 0.05 and 10 seconds.
  • the invention also relates to a device in which machines for loading the fiber suspension with calcium carbonate are present. Flue gas containing carbon dioxide is supplied to these. A degassing system for removing excess gas is arranged downstream of the machines. The arrangement of the machines is generally known from the documents listed above.
  • the flue gas can be supplied from an incineration plant, in particular a gas engine or a gas turbine.
  • the degassing system advantageously includes a chest with an agitator, a pressure sorter, a venting pump, a cyclone, a cleaner (high cyclone) and / or a deculator.
  • a further development of the invention is advantageous, in which an intermediate chest is arranged downstream of the degassing plant in the processing direction of the fiber suspension.
  • a fiber suspension 1 (FIG.) Is fed into an arrangement 2 of machines for the fiber loading process, which is not shown in detail here.
  • the arrangement 2 is also supplied with flue gas 3 from a storage container 4 via a gas pump 5.
  • the flue gas 3 originates, for example, from a power plant, an internal combustion engine, an internal combustion engine, a boiler or the like
  • the fibrous suspension 1 which has taken up carbon dioxide from the flue gas 3, is passed on to a degassing plant 6, in which the carbon dioxide not absorbed by it and the non-usable residual gas are withdrawn from the fibrous suspension 1.
  • the fibrous suspension 1 is then passed on to an intermediate chest 7.
  • the intermediate chest 7 serves, for example, for the intermediate storage of the fibrous stock suspension 1 before it is passed on to a headbox of a paper machine or another machine for producing a fibrous web.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

L'invention concerne un dispositif pour charger une suspension fibreuse (1) contenant des fibres de cellulose, ce dispositif comportant un ensemble (2) de machines pour charger la suspension fibreuse (1) avec du carbonate de calcium, ces machines étant alimentées en gaz de fumée (3) contenant du dioxyde de carbone. En aval des machines est montée une installation de dégazage (6) pour évacuer le gaz superflu.
EP04791189A 2003-10-15 2004-10-11 Procede et dispositif pour charger une suspension fibreuse Ceased EP1676001A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10347920A DE10347920A1 (de) 2003-10-15 2003-10-15 Verfahren und Vorrichtung zum Beladen einer Faserstoffsuspension
PCT/EP2004/052490 WO2005038127A1 (fr) 2003-10-15 2004-10-11 Procede et dispositif pour charger une suspension fibreuse

Publications (1)

Publication Number Publication Date
EP1676001A1 true EP1676001A1 (fr) 2006-07-05

Family

ID=34441956

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04791189A Ceased EP1676001A1 (fr) 2003-10-15 2004-10-11 Procede et dispositif pour charger une suspension fibreuse

Country Status (6)

Country Link
US (1) US20070051480A1 (fr)
EP (1) EP1676001A1 (fr)
CN (1) CN1863962A (fr)
BR (1) BRPI0415297A (fr)
DE (1) DE10347920A1 (fr)
WO (1) WO2005038127A1 (fr)

Families Citing this family (9)

* 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
DE10335751A1 (de) * 2003-08-05 2005-03-03 Voith Paper Patent Gmbh Verfahren zum Beladen einer Faserstoffsuspension und Anordnung zur Durchführung des Verfahrens
DE10357437A1 (de) * 2003-12-09 2005-07-07 Voith Paper Patent Gmbh Verfahren zum Beladen einer Faserstoffsuspension und Anordnung zur Durchführung des Verfahrens
DE102006012835B3 (de) * 2006-03-21 2007-11-15 Voith Patent Gmbh Verfahren zur Behandlung von störende Gefäßzellen enthaltendem Zellstoff
DE102007020324A1 (de) * 2007-04-30 2008-11-06 Voith Patent Gmbh Verfahren zur Bildung von Calciumcarbonat in einer Faserstoffsuspension
CN101492893B (zh) * 2009-03-03 2010-12-29 金东纸业（江苏）股份有限公司 碳酸钙复合纤维的制造方法及其应用
FI122304B (fi) * 2010-04-22 2011-11-30 Nordkalk Oy Ab Happaman veden käyttö paperinvalmistuksessa
FI125826B (fi) * 2010-08-04 2016-02-29 Nordkalk Oy Ab Menetelmä paperin tai kartongin valmistamiseksi
FI20116326L (fi) 2011-12-28 2013-06-29 Nordkalk Oy Ab Saostetun karbonaatin käyttö kuitutuotteen valmistuksessa

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5171405A (en) * 1990-08-28 1992-12-15 Kamyr, Inc. Reactor having a discontinuous conduit means between surfaces of a downwardly extending stationary spiral
FI100670B (fi) * 1996-02-20 1998-01-30 Metsae Serla Oy Menetelmä täyteaineen lisäämiseksi selluloosakuituperäiseen massaan
FI109455B (fi) * 1999-09-30 2002-08-15 Outokumpu Oy Kompakti kaskadipesuri poistokaasun pesemiseksi
US6355138B1 (en) * 2000-02-24 2002-03-12 Voith Sulzer Paper Technology North America, Inc. Method of chemically loading fibers in a fiber suspension
DE10024790A1 (de) * 2000-05-19 2001-11-22 Voith Paper Patent Gmbh Verfahren zur Vorbehandlung einer Faserstoffsuspension
DE10033979A1 (de) * 2000-07-13 2002-01-24 Voith Paper Patent Gmbh Verfahren zum Beladen von Fasern mit Calciumcarbonat
DE10033978A1 (de) * 2000-07-13 2002-01-24 Voith Paper Patent Gmbh Verfahren sowie Vorrichtung zum Beladen von Fasern mit Calciumcarbonat
FI109483B (fi) * 2000-11-16 2002-08-15 Andritz Oy Menetelmä ja laitteisto massan käsittelemiseksi täyteaineella
DE10107448A1 (de) * 2001-02-16 2002-08-22 Voith Paper Patent Gmbh Verfahren und Vorrichtung zum Beladen von in einer Faserstoffsuspension enthaltenen Fasern mit einem Füllstoff
DE10120637A1 (de) * 2001-04-27 2002-10-31 Voith Paper Patent Gmbh Verfahren zum Beladen von Fasern
DE10120635A1 (de) * 2001-04-27 2002-10-31 Voith Paper Patent Gmbh Verfahren und Vorrichtung 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
JP2005517100A (ja) * 2002-02-02 2005-06-09 ボイス ペ−パ− パテント ゲ−エムベ−ハ− パルプ懸濁液に含有された繊維を調製するための方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005038127A1 *

Also Published As

Publication number Publication date
CN1863962A (zh) 2006-11-15
WO2005038127A1 (fr) 2005-04-28
DE10347920A1 (de) 2005-05-19
BRPI0415297A (pt) 2006-12-26
US20070051480A1 (en) 2007-03-08

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