BR0005444A - Processo para alvejamento de materiais lignocelulósicos - Google Patents

Processo para alvejamento de materiais lignocelulósicos

Info

Publication number
BR0005444A
BR0005444A BR0005444-5A BR0005444A BR0005444A BR 0005444 A BR0005444 A BR 0005444A BR 0005444 A BR0005444 A BR 0005444A BR 0005444 A BR0005444 A BR 0005444A
Authority
BR
Brazil
Prior art keywords
bleaching
ozone
lignocellulosic materials
stage
targeting
Prior art date
Application number
BR0005444-5A
Other languages
English (en)
Inventor
Jorge Luiz Colodette
Ana Campos H De Brito
Marcelo Rodrigues Da Silva
Elias Salvador
Original Assignee
Praxair Technology 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 Praxair Technology Inc filed Critical Praxair Technology Inc
Publication of BR0005444A publication Critical patent/BR0005444A/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
    • 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
    • D21C9/101—Bleaching ; Apparatus therefor in solvent medium
    • 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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
    • 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
    • D21C9/142—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 in a multistage process involving ClO2/Cl2 exclusively
    • 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
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
    • 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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

"PROCESSO PARA ALVEJAMENTO DE MATERIAIS LIGNOCELULóSICOS" Um processo de alvejamento à base de ozónio para alvejamento de materiais lignocelulósicos compreendendo uma seq³ência de alvejamento de pelo menos quatro estágios seq³enciais, citados estágios incluindo um estágio de tratamento oxidante, um estágio de extração alcalina, um estágio de alvejamento com ozónio ativado, e um estágio final de alvejamento. O estágio de alvejamento com ozónio ativado compreende a adição de uma mistura de etanol/DMSO na polpa antes da reação com ozónio.
BR0005444-5A 1999-11-19 2000-11-17 Processo para alvejamento de materiais lignocelulósicos BR0005444A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US44332399A 1999-11-19 1999-11-19

Publications (1)

Publication Number Publication Date
BR0005444A true BR0005444A (pt) 2001-07-03

Family

ID=23760340

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0005444-5A BR0005444A (pt) 1999-11-19 2000-11-17 Processo para alvejamento de materiais lignocelulósicos

Country Status (5)

Country Link
EP (1) EP1101860A1 (pt)
KR (1) KR20010051774A (pt)
CN (1) CN1297085A (pt)
BR (1) BR0005444A (pt)
CA (1) CA2326311A1 (pt)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100404754C (zh) * 2002-10-18 2008-07-23 梅秀泉 生物/氧化法造芦苇浆的制备方法
CN100404753C (zh) * 2002-10-18 2008-07-23 梅秀泉 氧化法全棉秆造新闻纸浆及其制备方法
US20070272377A1 (en) * 2003-12-25 2007-11-29 Xiuquan Mei Fully Closed, Zero Discharge, Clean Oxidizing Pulping Technology and Process
WO2005064077A1 (fr) * 2003-12-25 2005-07-14 Xiuquan Mei Procede de reduction en pate par bio-oxydation en cycle ferme a zero rejet
CN101105011B (zh) * 2004-01-17 2010-05-12 梅秀泉 一种氧脱木素和漂白一体化制浆方法及实现该方法的装置
KR100811196B1 (ko) * 2005-10-12 2008-03-17 (주)페가서스인터내셔널 외피가 두꺼운 홍조류를 이용한 펄프의 제조방법
CN101063278B (zh) * 2006-04-26 2010-12-15 北京国力源高分子科技研发中心 干香蕉茎在氧自由基脱/漂一体化反应釜中生产漂白纸浆的方法
SE532470C2 (sv) * 2008-05-13 2010-02-02 Metso Paper Inc Slutblekning av oxygendelignifierad massa med ozon, klordioxid och peroxid
CN101463573B (zh) * 2008-12-08 2010-12-08 沅江纸业有限责任公司 一种草浆漂白工艺
CN102995478B (zh) * 2011-09-09 2015-04-15 吉林化纤集团有限责任公司 一种制备高质量低污染竹材溶解浆的漂白方法
CN103652828B (zh) * 2013-11-30 2015-04-22 陕西科技大学 一种苹果膳食纤维的脱色处理方法
CN104674588A (zh) * 2015-03-26 2015-06-03 广西大学 一种优化二氧化氯漂白的方法
CN104790241B (zh) * 2015-05-12 2016-08-17 四川理工学院 一种高纯度高质量竹材溶解浆的清洁制备方法
CN105839449B (zh) * 2016-04-07 2017-08-25 四川理工学院 一种粘胶级竹浆粕的清洁制备方法
CN109063995B (zh) * 2018-07-23 2021-09-21 华南理工大学 一种生物质组分分离利用工艺过程中源污染物质的环境效果评定方法
RU2724362C1 (ru) * 2019-07-04 2020-06-23 Федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский государственный университет промышленных технологий и дизайна (СПбГУПТД)" Способ отбелки целлюлозы
CN110656527A (zh) * 2019-09-12 2020-01-07 华南理工大学 一种臭氧和二氧化氯协同高效漂白中浓纸浆的方法及装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT373303B (de) * 1981-08-06 1984-01-10 Chemiefaser Lenzing Ag Verfahren zur herstellung von zellstoffen mit niedrigem ligningehalt
US4959124A (en) * 1989-05-05 1990-09-25 International Paper Company Method of bleaching kraft pulp in a DZED sequence
FR2692499B1 (fr) * 1992-06-22 1994-08-26 Atochem Elf Sa Procédé de délignification et de blanchiment d'une matière lignocellulosique.
US5411635A (en) * 1993-03-22 1995-05-02 The Research Foundation Of State University Of New York Ozone/peroxymonosulfate process for delignifying a lignocellulosic material
FI964715A7 (fi) * 1996-11-26 1998-05-27 Oy Keskuslaboratorio Centrallaboratorium Ab Menetelmä selluloosamassan valkaisemiseksi

Also Published As

Publication number Publication date
CN1297085A (zh) 2001-05-30
KR20010051774A (ko) 2001-06-25
CA2326311A1 (en) 2001-05-19
EP1101860A1 (en) 2001-05-23

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Legal Events

Date Code Title Description
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal acc. article 33 of ipl - extension of time limit for request of examination expired