BRPI0600771A - método de tratamento quìmico de polpa de celulose - Google Patents

método de tratamento quìmico de polpa de celulose

Info

Publication number
BRPI0600771A
BRPI0600771A BRPI0600771-6A BRPI0600771A BRPI0600771A BR PI0600771 A BRPI0600771 A BR PI0600771A BR PI0600771 A BRPI0600771 A BR PI0600771A BR PI0600771 A BRPI0600771 A BR PI0600771A
Authority
BR
Brazil
Prior art keywords
treatments
treatment
stage
washing
cellulose pulp
Prior art date
Application number
BRPI0600771-6A
Other languages
English (en)
Inventor
Nam Hee Shin
Pamela J O'leary
Olavi Pikka
Original Assignee
Andritz Inc
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 Andritz Inc filed Critical Andritz Inc
Publication of BRPI0600771A publication Critical patent/BRPI0600771A/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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
    • 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
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate 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
    • 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
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
    • 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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites

Landscapes

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

Abstract

"MéTODOS DE TRATAMENTO QUìMICO DE POLPA DE CELULOSE". A presente invenção refere-se a um estágio único de branqueamento de polpa consiste em um tratamento ácido, A, em um tratamento de neutralização, n, e em um tratamento com dióxido de cloro, Do. O estágio de branqueamento AnD~ o~ pode opcionalmente incluir a lavagem entre os tratamentos, quer seja entre cada tratamento ou apenas em alguns tratamentos, representado por A-n-D~ o~, que indica que existe lavagem entre os tratamentos ácido (A) de neutralização (n) e os tratamentos com dióxido de cloro (D), ou An-Do, o que indica que existe lavagem apenas entre os tratamentos de neutralização e com dióxido de cloro (D). O estágio AnD~ o~ pode ser seguido de lavagem e posterior estágios de branqueamento. Preferencialmente, o estágio (AnD~ o~) é seguido por um estágio de extração E~ op~ com cáustica na presença de oxigênio e um peróxido.
BRPI0600771-6A 2005-03-08 2006-03-08 método de tratamento quìmico de polpa de celulose BRPI0600771A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US65907705P 2005-03-08 2005-03-08
US11/339,853 US20060201642A1 (en) 2005-03-08 2006-01-26 Methods of treating chemical cellulose pulp

Publications (1)

Publication Number Publication Date
BRPI0600771A true BRPI0600771A (pt) 2006-11-07

Family

ID=36968837

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0600771-6A BRPI0600771A (pt) 2005-03-08 2006-03-08 método de tratamento quìmico de polpa de celulose

Country Status (6)

Country Link
US (1) US20060201642A1 (pt)
JP (1) JP4976707B2 (pt)
CN (1) CN1896378B (pt)
BR (1) BRPI0600771A (pt)
CA (1) CA2537033A1 (pt)
SE (1) SE531227C2 (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016000056A1 (pt) * 2014-07-04 2016-01-07 Universidade Estadual Paulista "Júlio De Mesquita Filho" - Unesp Processo de branqueamento de celulose e de produção de derivados de celulose

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI122626B (fi) * 2006-03-31 2012-04-30 Laennen Tutkimus Western Res Inc Oy Kemiallisen massan valkaisumenetelmä
US8920603B2 (en) * 2006-10-11 2014-12-30 Akzo Nobel N.V. Bleaching of pulp
EA013901B1 (ru) * 2006-10-11 2010-08-30 Акцо Нобель Н.В. Отбеливание целлюлозы
JP6411182B2 (ja) * 2014-11-13 2018-10-24 大王製紙株式会社 汚泥の脱水助剤及び汚泥の脱水方法
US10597820B2 (en) * 2015-05-14 2020-03-24 DuPont Nutrition USA, Inc. Method of making bleached microcrystalline cellulose
HRP20190259A2 (hr) 2019-02-07 2020-08-21 Marinko Mikulić Kontinuirani postupak proizvodnje celulozne pulpe iz travnatih sirovina

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2166330A (en) * 1938-09-12 1939-07-18 Mathieson Alkali Works Inc Method of bleaching
US4568420B1 (en) * 1984-12-03 1999-03-02 Int Paper Co Multi-stage bleaching process including an enhanced oxidative extraction stage
US5268075A (en) * 1989-10-19 1993-12-07 North Carolina State University High efficiency two-step, high-low pH chlorine dioxide pulp bleaching process
JPH06158573A (ja) * 1992-11-18 1994-06-07 Mitsubishi Gas Chem Co Inc 製紙用化学パルプの漂白方法
FI102301B1 (fi) * 1994-10-13 1998-11-13 Ahlstrom Machinery Oy Menetelmä selluloosamassojen käsittelemiseksi
US6776876B1 (en) * 1994-10-13 2004-08-17 Andritz Oy Method of treating cellulosic pulp to remove hexenuronic acid
EP0925401B1 (fr) * 1996-09-11 2002-01-16 SOLVAY INTEROX (Société Anonyme) Procede de blanchiment de pate a papier
FI119383B (fi) * 1998-03-06 2008-10-31 Andritz Oy Menetelmä massan käsittelemiseksi
JP2001200486A (ja) * 1999-12-02 2001-07-27 Andritz Ahlstrom Inc 細砕セルロース繊維材のスラリーを処理する方法
CN1100177C (zh) * 2000-07-20 2003-01-29 华南理工大学 硫酸盐木浆高温二氧化氯漂白方法
JP2003253582A (ja) * 2002-03-06 2003-09-10 Nippon Paper Industries Co Ltd パルプの漂白処理方法
JP3915682B2 (ja) * 2002-12-04 2007-05-16 王子製紙株式会社 漂白パルプの製造方法
JP2005226184A (ja) * 2004-02-12 2005-08-25 Nippon Paper Industries Co Ltd パルプの漂白処理方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016000056A1 (pt) * 2014-07-04 2016-01-07 Universidade Estadual Paulista "Júlio De Mesquita Filho" - Unesp Processo de branqueamento de celulose e de produção de derivados de celulose

Also Published As

Publication number Publication date
CN1896378B (zh) 2011-07-20
JP4976707B2 (ja) 2012-07-18
US20060201642A1 (en) 2006-09-14
SE531227C2 (sv) 2009-01-27
CN1896378A (zh) 2007-01-17
CA2537033A1 (en) 2006-09-08
JP2006249650A (ja) 2006-09-21
SE0600454L (sv) 2006-09-09

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Legal Events

Date Code Title Description
B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B11B Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements