BR0005444A - Bleaching process for lignocellulosic materials - Google Patents

Bleaching process for lignocellulosic materials

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
Portuguese (pt)
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/en

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."LIGNOCELLULOSIC MATERIALS TARGETING PROCESS" An ozone-based bleaching process for targeting lignocellulosic materials comprising a targeting sequence of at least four sequential stages, cited stages including an oxidizing treatment stage, an alkaline extraction stage, an alkaline extraction stage, bleaching with activated ozone, and a final bleaching stage. The activated ozone bleaching stage comprises the addition of an ethanol / DMSO mixture to the pulp prior to the reaction with ozone.

BR0005444-5A 1999-11-19 2000-11-17 Bleaching process for lignocellulosic materials BR0005444A (en)

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 (en) 2001-07-03

Family

ID=23760340

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0005444-5A BR0005444A (en) 1999-11-19 2000-11-17 Bleaching process for lignocellulosic materials

Country Status (5)

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

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100404753C (en) * 2002-10-18 2008-07-23 梅秀泉 Oxidation method prepared whole-cotton stalk newspaper pulp and its preparation method
CN100404754C (en) * 2002-10-18 2008-07-23 梅秀泉 Reed pulp prepared from wholly closed pollution-free biological oxidation method and its preparation method
WO2005064076A1 (en) * 2003-12-25 2005-07-14 Xiuquan Mei Closed cycle zero discharge oxidizing pulping process
CN100420788C (en) * 2003-12-25 2008-09-24 梅秀泉 Full-closed zero discharge bio-oxidizing pulping process and its preparation method
CN101105011B (en) * 2004-01-17 2010-05-12 梅秀泉 Oxygen delignification and bleaching integration paste preparing method and device for realizing the same method
KR100811196B1 (en) * 2005-10-12 2008-03-17 (주)페가서스인터내셔널 Method for Preparing Pulp Using Rhodophyta Having Thick Cortex
CN101063278B (en) * 2006-04-26 2010-12-15 北京国力源高分子科技研发中心 Method for hybrid giant napier producing in oxygen free radical doffing/bleaching integrated reactor with dried bananas stalk
SE532470C2 (en) * 2008-05-13 2010-02-02 Metso Paper Inc Final bleaching of oxygen delignified pulp with ozone, chlorine dioxide and peroxide
CN101463573B (en) * 2008-12-08 2010-12-08 沅江纸业有限责任公司 Straw pulp bleaching technique
CN102995478B (en) * 2011-09-09 2015-04-15 吉林化纤集团有限责任公司 Bleaching method for preparing high quality low pollution bamboo wood dissolving slurry
CN103652828B (en) * 2013-11-30 2015-04-22 陕西科技大学 Decolorization treatment method of apple dietary fiber
CN104674588A (en) * 2015-03-26 2015-06-03 广西大学 Method for optimizing bleaching with chlorine dioxide
CN104790241B (en) * 2015-05-12 2016-08-17 四川理工学院 A kind of clean method for preparing of high-purity high-quality bamboo wood dissolving pulp
CN105839449B (en) * 2016-04-07 2017-08-25 四川理工学院 A kind of clean method for preparing of viscose grade bamboo pulp
CN109063995B (en) * 2018-07-23 2021-09-21 华南理工大学 Environmental effect evaluation method for source pollutants in biomass component separation and utilization process
RU2724362C1 (en) * 2019-07-04 2020-06-23 Федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский государственный университет промышленных технологий и дизайна (СПбГУПТД)" Method of bleaching cellulose
CN110656527A (en) * 2019-09-12 2020-01-07 华南理工大学 Method and device for efficiently bleaching medium-consistency paper pulp by using ozone and chlorine dioxide in synergy mode

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT373303B (en) * 1981-08-06 1984-01-10 Chemiefaser Lenzing Ag METHOD FOR THE PRODUCTION OF LOW-LEVEL CELLS
US4959124A (en) * 1989-05-05 1990-09-25 International Paper Company Method of bleaching kraft pulp in a DZED sequence
FR2692499B1 (en) * 1992-06-22 1994-08-26 Atochem Elf Sa Process for delignification and bleaching of a lignocellulosic material.
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
FI964715A (en) * 1996-11-26 1998-05-27 Keskuslaboratorio Method for bleaching cellulose pulp

Also Published As

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

Similar Documents

Publication Publication Date Title
BR0005444A (en) Bleaching process for lignocellulosic materials
TR200002869T2 (en) Substituted indolealconic acids.
ATE504562T1 (en) 7-, 8- AND 9-SUBSTITUTED TETRACYCLINE COMPOUNDS
EE9800080A (en) (Methylsulfonyl) phenyl-2- (5H) -furanones, their uses and pharmaceutical compositions
BRPI0109131B8 (en) dna, expression vector comprising the same, modified porcine factor viii, its production process and therapeutic composition comprising the same
BR0111206A (en) Arylmethylamine derivatives for use as tryptase inhibitors
ES2138626T3 (en) ACIDS (3R, 4R) -DELTA6-TETRAHIDROCANNABINOL-7-OICOS.
BR9812837A (en) Process for making a compound, and, compound
MX9204625A (en) PHARMACEUTICAL COMPOSITION FOR THE TREATMENT OF A MAMMAL SPECIES, WHICH SUFFERS FROM CONGESTIVE HEART DEFICIENCY.
DE69727158D1 (en) PHARMACEUTICAL COMPOSITIONS CONTAINING A MIXTURE OF SELF-CROSS-LINKED AND NON-SELF-CROSSLINKED HYALURONIC ACID FOR THE TREATMENT OF ARTHROPATHIES
CY1107899T1 (en) 6. ALPHA., 9. ALPHA. - DIFLUORO-17.ALPHA.-(2-FURANYLCARCOXYLATE) ACID-11.BETA.-HYDROXY-16.ALPHA.-METHYL-3-OXO-ANDROSTA-1,4-DIENO-17-CARBONSULFURIC ACID S-FLUOROMETHYL ESTER AS ANTI-INFLAMMATORY AGENT
WO2004091502A3 (en) 1,2,4-oxadiazole benzoic acid compounds
ATE211135T1 (en) AMINOCYCLOHEXYL ESTER AND THEIR APPLICATION
BR0209127A (en) compounds, pharmaceutical compositions, methods for treating pain, methods for modulating a pharmacological response and uses of compounds
BR0215027A (en) 6-Aminomorphinan derivatives, preparation process and its application
EA200300597A1 (en) BIPHENYLKARBOXAMIDES USEFUL AS A REDUCING CONTENT OF AGENT LIPIDS
TR200400228T4 (en) Substances used in the treatment of psoriasis
ES2124069T3 (en) AROMATIC HETERO-CYCLE COMPOUNDS, PHARMACEUTICAL AND COSMETIC COMPOSITIONS CONTAINING THEM AND USES.
BR0006082A (en) Phenol-novolacs with improved optical properties
AR004532A1 (en) POLYISOCYANATE COMPOSITION AND PROCESS FOR BINDING LIGNOCELLULOSIC MATERIAL
BR0012169A (en) Dihydrobenzodiazepines and their use in the treatment of dyslipidemia
FR2834242B1 (en) MULTILAYER STRUCTURE, USED IN PARTICULAR AS A MATERIAL OF HIGH RELATIVE PERMITTIVITY
BR0207186A (en) Air bleach composition and process for bleaching
MX9102101A (en) COMPOSITIONS CONTAINING PSYLLIUM. COMPOSITIONS CONTAINING PSYLLIUM.
MX9403032A (en) QUINOLYL-DIHYDROPYRIDINES, CONDENSED, PROCEDURE FOR ITS MANUFACTURE AND ITS USE IN MEDICINES.

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