BR0010977A - Processo aperfeiçoado para produção de polpa quìmica a partir de material lignocelulósico por meio de cozimento alcalino - Google Patents

Processo aperfeiçoado para produção de polpa quìmica a partir de material lignocelulósico por meio de cozimento alcalino

Info

Publication number
BR0010977A
BR0010977A BR0010977-0A BR0010977A BR0010977A BR 0010977 A BR0010977 A BR 0010977A BR 0010977 A BR0010977 A BR 0010977A BR 0010977 A BR0010977 A BR 0010977A
Authority
BR
Brazil
Prior art keywords
digester
lignocellulosic material
chemical pulp
pulp
alkaline cooking
Prior art date
Application number
BR0010977-0A
Other languages
English (en)
Inventor
Mikael Svedman
Original Assignee
Metso Chemical Pulping Oy
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 Metso Chemical Pulping Oy filed Critical Metso Chemical Pulping Oy
Publication of BR0010977A publication Critical patent/BR0010977A/pt

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
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • 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
    • D21C7/00—Digesters
    • D21C7/08—Discharge devices
    • 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
    • D21C9/007—Modification of pulp properties by mechanical or physical means

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Abstract

PROCESSO APERFEIçOADO PARA PRODUçãO DE POLPA QUìMICA A PARTIR DE MATERIAL LIGNOCELULóSICO POR MEIO DE COZIMENTO ALCALINO". Processo para produzir polpa química a partir de material celulósico, por meio de cozimento alcalino, incluindo o cozimento do material a ser transformado em polpa em temperaturas de cozimento em um digestor, reduzindo a temperatura ao final do cozimento, liberando substancialmente a sobrepressão no digestor e, então, descarregando a polpa do digestor por meio de bombeamento. O processo é caracterizado pelo fato de que a polpa é resfriada a, essencialmente, 85<198>C a 70<198>C antes do bombeamento do material cozido, como uma suspensão fluida vinda do digestor, e pelo fato de que a temperatura do material cozido é mantida na mesma faixa de temperatura e a um nível de pH estando entre 10 e 13, entre o digestor e um primeiro estágio de deslignificação e clareamento, evitando assim um dano mecânico do material celulósico.
BR0010977-0A 1999-05-28 2000-05-22 Processo aperfeiçoado para produção de polpa quìmica a partir de material lignocelulósico por meio de cozimento alcalino BR0010977A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI991220A FI113187B (fi) 1999-05-28 1999-05-28 Menetelmä massan käsittelemiseksi
PCT/FI2000/000459 WO2000073575A1 (en) 1999-05-28 2000-05-22 Method for avoiding mechanical damage of pulp

Publications (1)

Publication Number Publication Date
BR0010977A true BR0010977A (pt) 2002-03-05

Family

ID=8554760

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0010977-0A BR0010977A (pt) 1999-05-28 2000-05-22 Processo aperfeiçoado para produção de polpa quìmica a partir de material lignocelulósico por meio de cozimento alcalino

Country Status (8)

Country Link
US (1) US6719878B1 (pt)
EP (1) EP1268924B1 (pt)
JP (1) JP2003500568A (pt)
AU (1) AU4759300A (pt)
BR (1) BR0010977A (pt)
CA (1) CA2373490C (pt)
FI (1) FI113187B (pt)
WO (1) WO2000073575A1 (pt)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1426382A (zh) 2000-03-14 2003-06-25 詹姆斯·哈迪研究有限公司 含低密度添加剂的纤维水泥建筑材料
JP5155512B2 (ja) * 2000-10-04 2013-03-06 ジェイムズ ハーディー テクノロジー リミテッド 無機および／または有機物質が充填処理されたセルロース繊維を使用した繊維セメント複合材料
CZ2003959A3 (cs) * 2000-10-04 2003-09-17 James Hardie Research Pty. Limited Vláknité cementové kompozitní materiály používající lubrikovaná celulosová vlákna
CZ20031253A3 (cs) * 2000-10-17 2004-12-15 James Hardie Research Pty Limited Způsob a zařízení pro snižování nečistot v celulózových vláknech určených pro výrobu cementových složených materiálů vyztužených vlákny
AU1181602A (en) * 2000-10-17 2002-04-29 James Hardie Res Pty Ltd Fiber cement composite material using biocide treated durable cellulose fibers
CA2439698C (en) * 2001-03-09 2011-04-19 James Hardie Research Pty. Limited Fiber reinforced cement composite materials using chemically treated fibers with improved dispersibility
MXPA05003691A (es) 2002-10-07 2005-11-17 James Hardie Int Finance Bv Material mixto de fibrocemento de densidad media durable.
CL2004000021A1 (es) * 2003-01-09 2005-02-18 James Hardie Int Finance Bv Material compuesto que comprende una matriz cementosa, y una mezcla de fibras celulosicas blanqueadas y sin blanquear que son incorporadas dentro de la matriz cementosa; metodo para fabricar un material compuesto de cemento reforzado con fibras.
US7998571B2 (en) 2004-07-09 2011-08-16 James Hardie Technology Limited Composite cement article incorporating a powder coating and methods of making same
US20060157209A1 (en) * 2005-01-19 2006-07-20 Bianchini Craig A Method and apparatus to distribute the inflow of liquors in a Batch Digester
WO2007115379A1 (en) 2006-04-12 2007-10-18 James Hardie International Finance B.V. A surface sealed reinforced building element
US20080202714A1 (en) * 2007-02-26 2008-08-28 Andritz Inc. Methods and systems for the use of recycled filtrate in bleaching pulp
PL2185734T3 (pl) 2007-07-25 2011-09-30 Haarslev As Sposób oraz instalacja do wstępnej obróbki materiału lignocelulozowego
US8209927B2 (en) 2007-12-20 2012-07-03 James Hardie Technology Limited Structural fiber cement building materials
FI123023B (fi) * 2009-09-01 2012-10-15 Andritz Oy Menetelmä ja laitteisto suovan erottamiseksi
CA2802237C (en) 2010-06-10 2018-02-13 Packaging Corporation Of America Method of manufacturing pulp for corrugated medium
WO2016145276A1 (en) * 2015-03-11 2016-09-15 Andritz Inc. Processes and systems for the pulping of lignocellulosic materials
SE544255C2 (en) * 2020-09-03 2022-03-15 Valmet Oy System for producing cellulose pulp and method for controlling such a system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4814042A (en) * 1987-03-18 1989-03-21 Pulp & Paper Research Institute Of Canada Method for discharging delignified cellulosic materials from digesters
US4975148A (en) * 1988-12-06 1990-12-04 Ahlstromforetagen Svenska Ab Cold blow system for batch production of pulp
SE505141C2 (sv) 1995-10-23 1997-06-30 Sunds Defibrator Ind Ab Syrgasdelignifiering av massa i två steg med hög satsning av alkali och syrgas och temperatur under 90 C i första steget

Also Published As

Publication number Publication date
EP1268924A1 (en) 2003-01-02
FI991220L (fi) 2000-11-29
EP1268924B1 (en) 2012-11-28
CA2373490A1 (en) 2000-12-07
FI991220A0 (fi) 1999-05-28
JP2003500568A (ja) 2003-01-07
US6719878B1 (en) 2004-04-13
CA2373490C (en) 2009-04-28
WO2000073575A1 (en) 2000-12-07
AU4759300A (en) 2000-12-18
FI113187B (fi) 2007-09-25

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 6A, 7A E 8A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO PUBLICADO NA RPI 1962 DE 12/08/2008.