US20070051480A1 - Method and apparatus for loading a fibrous stock suspension - Google Patents

Method and apparatus for loading a fibrous stock suspension Download PDF

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Publication number
US20070051480A1
US20070051480A1 US10/575,541 US57554104A US2007051480A1 US 20070051480 A1 US20070051480 A1 US 20070051480A1 US 57554104 A US57554104 A US 57554104A US 2007051480 A1 US2007051480 A1 US 2007051480A1
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US
United States
Prior art keywords
approximately
further including
calcium carbonate
flue gas
fibrous stock
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Abandoned
Application number
US10/575,541
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English (en)
Inventor
Klaus Doelle
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Voith Patent GmbH
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Voith Paper Patent GmbH
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Filing date
Publication date
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Assigned to VOITH PAPER PATENT GMBH reassignment VOITH PAPER PATENT GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DOELLE, KLAUS
Publication of US20070051480A1 publication Critical patent/US20070051480A1/en
Abandoned legal-status Critical Current

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    • 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 present invention relates to a method for loading of a fibrous stock suspension with calcium carbonate.
  • a method for loading a fibrous stock suspension is described in German Patent No. DE 100 33 978 A1 whereby a medium which contains calcium oxide and/or calcium hydroxide, and pure carbon dioxide or a carbon dioxide containing medium are added to the fibrous stock suspension.
  • a combustion process is utilized in order to produce carbon dioxide, whereby said combustion process is process linked with the device for the production of the fibrous stock suspension.
  • a method for loading a fibrous stock suspension is known from German Patent No. DE 101 20 637 A1 whereby the carbon dioxide is produced from the waste-gas of a fuel or by lime burning.
  • the carbon dioxide has a percentage purity of between 65 and 99% and is contained, for example in the waste gas of a power station, a combustion motor, a boiler or a device for direct burning of fossil fuel.
  • What is needed in the art is to further improve a method and apparatus for loading a fibrous stock suspension with calcium carbonate.
  • the present invention further improves a method and apparatus for loading a fibrous stock suspension with calcium carbonate.
  • the present invention describes a method for the production of fiber loaded precipitated calcium carbonate (FLPCC) and to simultaneously undergo a refining process, whereby the fiber raw material that is to be loaded may include recycling paper, DIP (deinked paper), secondary fibers, bleached or unbleached pulp, mechanical pulp, bleached or unbleached sulfate pulp, broke, linen, cotton, and/or hemp fibers (predominantly cigarette paper) and/or any fibrous raw material that can be utilized on a paper machine, irrespective of whether or not the end product contains a filler that was produced by a precipitation process in batch reactors or by a refining process, or whether talcum, titanium dioxide (TiO 2 ), silicon, etc. are used.
  • the fiber loading technology permits precipitation of a filler, especially calcium carbonate, that is uniformly distributed and adhered to, in and between the fibers directly in the stock preparation of a paper mill. It also allows the treated fibrous stock to undergo a refining treatment in a refiner simultaneously with the precipitation process.
  • the filler material utilized according to the current state of the art is replaced with the filler material produced according to the fiber loading combination process technology.
  • the range of application of the filler produced with the fiber loading combination process technology extends to applications within the paper production of all paper grades, including cigarette papers, filter papers, kraft sack paper grades and cardboard and packaging papers that have a filler content of between 1 and 60% and/or a white liner having a filler content of between 1 and 60%.
  • the loaded and produced paper grades can be produced on a paper machine from a recycling paper, deinked paper (DIP), secondary fibers, bleached or unbleached pulp, mechanical pulp, bleached or unbleached sulfate pulp, broke, linen, cotton, and/or hemp fibers (predominantly for cigarette paper) and/or any paper raw material, irrespective of whether or not the end product contains a filler.
  • DIP deinked paper
  • secondary fibers bleached or unbleached pulp
  • mechanical pulp bleached or unbleached sulfate pulp
  • broke linen, cotton, and/or hemp fibers (predominantly for cigarette paper) and/or any paper raw material, irrespective of whether or not the end product contains a filler.
  • Fibrous stock produced according to the fiber loading combination process technology generally possesses a superior dewatering characteristic compared to a fibrous stock produced according to another method; the improvement in the dewatering capacity is between 5 to 100 ml CSF or 0.2 to 15° SR, depending upon the required freeness.
  • the stock or pulp produced according to the fiber loading process further possesses a lower water retention value of 2 to 25%, depending upon the raw material that is used in production.
  • the loose filler can be removed by way of an additionally provided washing process prior to the refining process, following the refining process or after running through the headbox chest or prior to feeding into the paper machine.
  • the fiber loading technology may be utilized prior to or after the refining process, depending on what requirements are put upon the end product.
  • More effective drying to a residual moisture content of 1 to 20% permits an increase in efficiency for all paper grades.
  • a higher water retention capacity, i.e. 1 to 25% results in a positive influence upon remoistening which is lower in the manufacturing process, as well as upon the printability of the produced web.
  • An additional advantage for all paper grades is the greater brightness or the higher optical values with around 15 or more lightness points, which is to be emphasized in the production of all grades of paper and cardboard, with or without white liner.
  • the optical values for example in cigarette papers, are also improved by up to 15 lightness points when using for example deinking water.
  • the carbon dioxide emissions produced by a paper factory can be reduced by utilizing the carbon dioxide that is contained in the flue gas for the fiber loading process.
  • An additional advantage is that by utilizing the carbon dioxide that is contained in the flue gas transportation and storage of liquid carbon dioxide can be saved.
  • the flue gas which is being used in accordance with an inventive method has, for example, a carbon dioxide content of between 2 and 30%.
  • the flue gas can be cleaned for example in a scrubber prior to introducing it into the fiber loading process, as described in German Patent No. DE 101 20 637 A1, incorporated herein by reference [sections 0010-0011], wash tower 14 in the only drawing and associated description].
  • a refining energy in the range of between 0.1 and 300 kWh per ton of dry fiber stock is applied during loading of the fibrous stock suspension with calcium carbonate. Loading and refining would preferably be conducted in separate and independent process steps in one device.
  • aqueous fibrous stock material especially aqueous fiber stock having a consistency of 0.1 to 20%, preferably between 2 and 8%, is used as primary raw material.
  • calcium hydroxide is mixed as the preferred filler into the aqueous fiber stock material, especially into the fiber stock, whereby this has a solids content of between 0.01 and 60%.
  • utilization of a source material other than calcium hydroxide or calcium oxide for formation of the filler is also feasible.
  • the calcium hydroxide is added through a static mixer or an intermediate tank.
  • the carbon dioxide is preferably added into a moist fibrous stock suspension having a preferred consistency of 0.1 to 60%, according to the reaction parameters.
  • Calcium carbonate is precipitated in a carbon dioxide gaseous atmosphere.
  • the refining process is carried out simultaneously with the fiber loading process in an apparatus, the crystallizer; a refining energy in the range between 0.1 and 300 kWh/ton dry fiber stock is applied; a short reaction time of the calcium hydroxide with the carbon dioxide is important in this context.
  • the energy supply or heat volume, or heating of the fibrous suspension for the production of crystals in various forms is important for the present invention.
  • aqueous fibrous stock with a fiber content of between 0.01 and 60% is used as primary raw material.
  • An advantageous embodiment of the method according to the present invention provides that a static mixer, a refiner, a disperger and/or a fluffer FLPCC reactor are utilized as a reactor, whereby the fibrous stock content, especially the fiber content is between 0.01 and 15% in the instance of a static mixer; at between 2 and 8% in the instance of a refiner (low consistency refining) and between 20 and 35% (high consistency refining), and in the instance of a disperger between 2 and 40%, and 15 and 60% in the instance of a fluffer-FLPCC-reactor.
  • the present invention provides that the dilution water is supplied prior to, during or after the addition of carbon dioxide or calcium hydroxide or calcium oxide.
  • Calcium carbonate precipitates when adding carbon dioxide into a calcium hydroxide solution or suspension.
  • the precipitative reaction also occurs, when calcium hydroxide is added to water under a carbon dioxide atmosphere.
  • Dilution water may be added prior to, during or after the addition of carbon dioxide or calcium hydroxide.
  • An expenditure of energy of between 0.3 and 8 kWh/t, especially between 0.5 and 4 kWh/t is preferably used for the precipitation reaction when no refiner is used.
  • the process temperature is between ⁇ 15° C. and 120° C., especially between 20 and 90° C.
  • rhombohedral, scalenohedron and spherical crystals can be formed.
  • the crystals measure between 0.05 and 5 ⁇ m, especially between 0.3 and 2.5 ⁇ m.
  • Static and/or moving, especially rotating mixing elements may be utilized.
  • the process is preferably carried out in a pressure range of between 0 and 15 bar, especially between 0 and 6 bar.
  • the pH value is preferably between 6 and 10, especially between 6.5 and 8.5.
  • the reaction time is advantageously between 0.05 seconds and 1 minute, especially between 0.05 seconds and 10 seconds.
  • the present invention relates to a device which includes machines for loading the fibrous stock suspension with calcium carbonate. These are supplied with flue gas containing carbon dioxide. The machines are followed by a deaeration unit for the removal of superfluous gas.
  • the configuration of the machinery is basically known from the documentation cited above.
  • a further advancement of the device provides that the flue gas from an incineration plant can be supplied especially to a gas motor or gas turbine.
  • the deaeration unit preferably includes a chest with an agitator, a pressure screen, a deaeration pump, a cyclone, a cleaner and/or a deculator.
  • a further development of the present invention is advantageous whereby an intermediate tank is installed after the deaeration unit, viewed in fiber stock flow direction.
  • a fibrous stock suspension 1 which is supplied to an arrangement 2 of machinery for the fiber loading process.
  • flue gas 3 is also supplied to arrangement 2 from a storage container 4 via a gas pump 5 .
  • the flue gas may, for example originate from a power station, an incineration device, a combustion motor, a boiler, or similar device.
  • Fibrous stock suspension 1 which has absorbed carbon dioxide from flue gas 3 is now transported from arrangement 2 to a deaeration device 6 where the carbon dioxide which was not absorbed by said fibrous stock suspension and the non-usable residual gas are again removed.
  • the fibrous stock suspension is subsequently transported to an intermediate tank 7 .
  • the purpose of intermediate tank 7 is for example to store fibrous stock suspension 1 before it is transported on to a head box in a paper machine, or to another machine for the production of a fiber web.

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  • 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)
US10/575,541 2003-10-15 2004-10-11 Method and apparatus for loading a fibrous stock suspension Abandoned US20070051480A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10347920.1 2003-10-15
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
US20070051480A1 true US20070051480A1 (en) 2007-03-08

Family

ID=34441956

Family Applications (1)

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US10/575,541 Abandoned US20070051480A1 (en) 2003-10-15 2004-10-11 Method and apparatus for loading a fibrous stock suspension

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)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060113051A1 (en) * 2003-01-24 2006-06-01 Voith Paper Patent Gmbh Method for creating a fibrous substance suspension used for producing a tissue web or hygiene web
US20070062652A1 (en) * 2003-12-09 2007-03-22 Voith Paper Patent Gmbh Method for charging a fibre suspension and arrangement for carrying out said method
US20070131361A1 (en) * 2003-08-05 2007-06-14 Klaus Doelle Method for charging a fiber suspension, and arrangement for carrying out said method
WO2011131843A1 (fr) * 2010-04-22 2011-10-27 Nordkalk Oy Ab Utilisation d'eau acide dans la fabrication de papier
US20130112360A1 (en) * 2010-06-03 2013-05-09 Nordkalk Oy Ab Process for manufacturing paper or board

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
FI20116326A (fi) 2011-12-28 2013-06-29 Nordkalk Oy Ab Saostetun karbonaatin käyttö kuitutuotteen valmistuksessa

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6413365B1 (en) * 2001-07-11 2002-07-02 Voith Paper Patent Gmbh Method of loading a fiber suspension with calcium carbonate
US6805734B1 (en) * 1999-09-30 2004-10-19 Outokumpu Oyj Compact cascade scrubber for scrubbing exhaust gas
US20050000665A1 (en) * 2002-02-02 2005-01-06 Klaus Doelle Method for preparing fibers contained in a pulp suspension

Family Cites Families (10)

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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
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6805734B1 (en) * 1999-09-30 2004-10-19 Outokumpu Oyj Compact cascade scrubber for scrubbing exhaust gas
US6413365B1 (en) * 2001-07-11 2002-07-02 Voith Paper Patent Gmbh Method of loading a fiber suspension with calcium carbonate
US20050000665A1 (en) * 2002-02-02 2005-01-06 Klaus Doelle Method for preparing fibers contained in a pulp suspension

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060113051A1 (en) * 2003-01-24 2006-06-01 Voith Paper Patent Gmbh Method for creating a fibrous substance suspension used for producing a tissue web or hygiene web
US20070131361A1 (en) * 2003-08-05 2007-06-14 Klaus Doelle Method for charging a fiber suspension, and arrangement for carrying out said method
US20070062652A1 (en) * 2003-12-09 2007-03-22 Voith Paper Patent Gmbh Method for charging a fibre suspension and arrangement for carrying out said method
WO2011131843A1 (fr) * 2010-04-22 2011-10-27 Nordkalk Oy Ab Utilisation d'eau acide dans la fabrication de papier
CN103097607A (zh) * 2010-04-22 2013-05-08 诺德卡尔克有限公司 酸性水在造纸中的用途
US8906201B2 (en) 2010-04-22 2014-12-09 Nordkalk Oy Ab Use of acidic water in the manufacture of paper
RU2544826C2 (ru) * 2010-04-22 2015-03-20 Нордкалк Ой Аб Применение кислой воды для производства бумаги
US20130112360A1 (en) * 2010-06-03 2013-05-09 Nordkalk Oy Ab Process for manufacturing paper or board
US8758566B2 (en) * 2010-06-03 2014-06-24 Nordkalk Oy Ab Process for manufacturing paper or board

Also Published As

Publication number Publication date
CN1863962A (zh) 2006-11-15
EP1676001A1 (fr) 2006-07-05
DE10347920A1 (de) 2005-05-19
WO2005038127A1 (fr) 2005-04-28
BRPI0415297A (pt) 2006-12-26

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Legal Events

Date Code Title Description
AS Assignment

Owner name: VOITH PAPER PATENT GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DOELLE, KLAUS;REEL/FRAME:017987/0382

Effective date: 20060419

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION