BRPI0701613A - processes and systems for reducing hardwood to alkaline pulp - Google Patents

processes and systems for reducing hardwood to alkaline pulp

Info

Publication number
BRPI0701613A
BRPI0701613A BRPI0701613-1A BRPI0701613A BRPI0701613A BR PI0701613 A BRPI0701613 A BR PI0701613A BR PI0701613 A BRPI0701613 A BR PI0701613A BR PI0701613 A BRPI0701613 A BR PI0701613A
Authority
BR
Brazil
Prior art keywords
lignin
hardwood
boil
boiling
content
Prior art date
Application number
BRPI0701613-1A
Other languages
Portuguese (pt)
Inventor
Nam Hee Shin
C Bertil Stromberg
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=38794811&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BRPI0701613(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Andritz Inc filed Critical Andritz Inc
Publication of BRPI0701613A publication Critical patent/BRPI0701613A/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
    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
    • D21C3/022—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of S-containing 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/24—Continuous 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/26—Multistage processes
    • D21C3/266—Multistage processes the same pulping agent being used in all stages
    • 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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/06—Pretreatment of the finely-divided materials before digesting with alkaline reacting 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/222—Use of compounds accelerating the 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/26—Multistage processes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)

Abstract

PROCESSOS E SISTEMAS PARA REDUZIR PARA POLPA ALCALINA MADEIRAS DE LEI. A presente invenção refere-se a rejeitos de polpa de madeira de lei, a um determinado número capa, que podem ser reduzidos submetendo a polpa de madeira de lei a condições de fervura especificadas no final da fervura. A esse respeito, foi descoberto que g-lignina reage mais rapidamente do que g-lignina e que existe uma proporção mais alta de g-lignina no final de uma fervura de madeira de lei, em comparação com a g-lignina presente no início da fervura. Desse modo, foi descoberto que ao ferver madeiras de lei, condições de fervura relativamente mais severas (por exemplo., temperaturas de fervura mais altas) no final da fervura diminuem o conteúdo de g-lignina, que, por sua vez, diminui a percentagem de rejeitos de polpa, a um determinado número capa. Em modalidades preferidas, métodos e sistemas são postos à disposição para produzir, continuamente, polpa de celulose química de uma pasta fluida fluida de material de madeira de lei triturado, submetendo a pasta fluida fluida de material de madeira de lei triturado a um primeiro estágio de fervura, sob condições suficientes para reduzir o conteúdo de lignina de siringila (s-lignina) no material de madeira de lei, em comparação com o conteúdo de lignina de guaiacila (g-lignina) no mesmo, e, depois, submeter a pasta fluida fluida de material de madeira de lei triturado a um segundo estágio de fervura, sob condições suficientes para reduzir o conteúdo de g-lignina remanescente no mesmo depois do primeiro estágio de fervura.PROCESSES AND SYSTEMS FOR REDUCING ALKALINE PULP WOODS. The present invention relates to hardwood tailings of a certain cap number which can be reduced by subjecting the hardwood to specified boiling conditions at the end of the boil. In this respect, it has been found that g-lignin reacts faster than g-lignin and that there is a higher proportion of g-lignin at the end of a hardwood boil compared to g-lignin present at the beginning of the study. boil. Thus, it has been found that when boiling hardwoods, relatively more severe boiling conditions (eg, higher boiling temperatures) at the end of boiling decrease the g-lignin content, which in turn decreases the percentage. of pulp tailings at a certain cover number. In preferred embodiments, methods and systems are provided for continuously producing chemical cellulose pulp from a milled hardwood fluid slurry by subjecting the milled hardwood fluid slurry to a first stage of crushing. boil under conditions sufficient to reduce the content of syringyl lignin (s-lignin) in the hardwood material compared to the guaiacyl lignin (g-lignin) content in it and then subject the slurry flow of hardwood material ground to a second boil stage, under conditions sufficient to reduce the remaining g-lignin content therein after the first boil stage.

BRPI0701613-1A 2006-04-13 2007-04-12 processes and systems for reducing hardwood to alkaline pulp BRPI0701613A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US79143106P 2006-04-13 2006-04-13
US11/709,278 US20070240837A1 (en) 2006-04-13 2007-02-22 Hardwood alkaline pulping processes and systems

Publications (1)

Publication Number Publication Date
BRPI0701613A true BRPI0701613A (en) 2008-03-11

Family

ID=38794811

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0701613-1A BRPI0701613A (en) 2006-04-13 2007-04-12 processes and systems for reducing hardwood to alkaline pulp

Country Status (14)

Country Link
US (2) US20070240837A1 (en)
JP (1) JP5101917B2 (en)
CN (1) CN101054777B (en)
AU (1) AU2007200969B2 (en)
BR (1) BRPI0701613A (en)
CA (1) CA2581993A1 (en)
CL (1) CL2007001000A1 (en)
ES (1) ES2319035B1 (en)
FI (1) FI20070280A (en)
PT (1) PT103701B (en)
RU (1) RU2414555C2 (en)
SE (1) SE531540C2 (en)
UY (1) UY30266A1 (en)
ZA (1) ZA200701944B (en)

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CA2640429C (en) * 2006-01-27 2014-04-01 University Of Massachusetts Systems and methods for producing biofuels and related materials
JP5119471B2 (en) * 2008-02-28 2013-01-16 王子ホールディングス株式会社 Method of cooking lignocellulosic material
SE532932C2 (en) * 2008-03-20 2010-05-11 Metso Fiber Karlstad Ab Supply system comprising parallel pumps for a continuous vapor phase boiler without top separator
BRPI0916598A2 (en) * 2008-07-28 2017-05-30 Qteros Inc methods and compositions for increasing product production in microorganisms
WO2010014631A2 (en) * 2008-07-28 2010-02-04 University Of Massachusetts Methods and compositions for improving the production of products in microorganisms
US7867363B2 (en) * 2008-08-27 2011-01-11 Metso Fiber Karlstad Ab Continuous digester system
US20100086981A1 (en) * 2009-06-29 2010-04-08 Qteros, Inc. Compositions and methods for improved saccharification of biomass
WO2011081658A2 (en) * 2009-12-15 2011-07-07 Qteros, Inc. Methods and compositions for producing chemical products from c. phytofermentants
GB2478791A (en) * 2010-03-19 2011-09-21 Qteros Inc Ethanol production by genetically-modified bacteria
US8951388B2 (en) * 2011-04-08 2015-02-10 Pec-Tech Engineering And Construction Pte Ltd Method and system for efficient production of dissolving pulp in a kraft mill producing paper grade pulp with a continuous type digester
FI127420B (en) * 2011-06-23 2018-05-31 Andritz Oy Process for producing cellulose pulp
AR088750A1 (en) * 2011-08-30 2014-07-02 Cargill Inc PULP ELABORATION PROCESSES
JP5783453B2 (en) * 2011-09-21 2015-09-24 川崎化成工業株式会社 Calculation method of addition effect of anthraquinone compound in pulping.
CN103410036B (en) * 2013-08-15 2015-11-18 齐鲁工业大学 A kind of production method of high-yield hardwood pulp
CN103835173B (en) * 2014-03-17 2015-09-16 昆明理工大学 A kind of big dragon bamboo pre-preg diethanol amine-anthraquinone pulping by cooking method
CN104407098B (en) * 2014-09-23 2016-04-20 黄伟洪 A kind of method of Fast Evaluation birch soda anthraquinone process technique
CN105568740B (en) * 2014-10-15 2017-12-12 亚太森博（山东）浆纸有限公司 Low whiteness sulfate leaf wood pulpboard of a kind of high intensity and preparation method thereof
CN105568739B (en) * 2014-10-15 2017-12-12 亚太森博（山东）浆纸有限公司 A kind of unbleached sulfate leaf wood pulpboard and preparation method thereof
BR112020007605A2 (en) * 2017-10-17 2020-09-29 Auburn University phenols as additives in kraft pulping

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Also Published As

Publication number Publication date
UY30266A1 (en) 2007-11-30
JP2007284860A (en) 2007-11-01
FI20070280A (en) 2007-10-14
AU2007200969A1 (en) 2007-11-01
ES2319035B1 (en) 2010-02-10
US20070240837A1 (en) 2007-10-18
RU2414555C2 (en) 2011-03-20
US20120305209A1 (en) 2012-12-06
CL2007001000A1 (en) 2008-05-30
SE531540C2 (en) 2009-05-12
ZA200701944B (en) 2008-08-27
JP5101917B2 (en) 2012-12-19
RU2007113735A (en) 2008-10-20
PT103701B (en) 2008-01-28
CN101054777A (en) 2007-10-17
PT103701A (en) 2007-10-15
FI20070280A0 (en) 2007-04-12
ES2319035A1 (en) 2009-05-01
SE0700888L (en) 2007-10-14
CN101054777B (en) 2011-05-18
CA2581993A1 (en) 2007-10-13
AU2007200969B2 (en) 2011-11-03

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