BR112012010746A2 - method of producing a pulp of lignocellulosic material - Google Patents

method of producing a pulp of lignocellulosic material

Info

Publication number
BR112012010746A2
BR112012010746A2 BR112012010746A BR112012010746A BR112012010746A2 BR 112012010746 A2 BR112012010746 A2 BR 112012010746A2 BR 112012010746 A BR112012010746 A BR 112012010746A BR 112012010746 A BR112012010746 A BR 112012010746A BR 112012010746 A2 BR112012010746 A2 BR 112012010746A2
Authority
BR
Brazil
Prior art keywords
pulp
lignocellulosic material
producing
stage
lignocellulosic
Prior art date
Application number
BR112012010746A
Other languages
Portuguese (pt)
Inventor
Boman Rolf
Jansson Christina
Larsson Rune
Södersten Per-Ake
Original Assignee
Metso Paper 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 Metso Paper Inc filed Critical Metso Paper Inc
Publication of BR112012010746A2 publication Critical patent/BR112012010746A2/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
    • D21C9/147—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
    • 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
    • D21C3/02—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
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials

Landscapes

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

Abstract

método de produção de uma polpa de material lignocelulósico. a presente invenção está correlacionada a um processo de produção de uma polpa de material lignocelulósico, especialmente, a partir de matéria-prima diferente de madeira, no qual a dissolução de sílica é minimizada. o processo compreende as etapas de cozinhar o material lignocelulósico com transformação em uma polpa, e submeter a dita polpa a um estágio de desliginificação por oxigênio, no qual é feita a adição de um álcali, de modo que a polpa apresenta um ph igual ou inferior a 10,0, após esse estágio., 0method of producing a pulp of lignocellulosic material. The present invention is correlated to a process for producing a pulp of lignocellulosic material, especially from non-wood raw material, in which the dissolution of silica is minimized. The process comprises the steps of cooking the lignocellulosic material with transformation into a pulp, and subjecting said pulp to an oxygen depletion stage, in which an alkali is added, so that the pulp has an equal or lower pH. to 10.0 after this stage., 0

BR112012010746A 2009-11-11 2010-10-26 method of producing a pulp of lignocellulosic material BR112012010746A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0901436A SE534885C2 (en) 2009-11-11 2009-11-11 Process for producing a pulp from lignocellulosic material containing at least 0.5% SiO2
PCT/SE2010/051157 WO2011059376A1 (en) 2009-11-11 2010-10-26 Method of producing pulp from lignocellulosic material containing silica

Publications (1)

Publication Number Publication Date
BR112012010746A2 true BR112012010746A2 (en) 2016-11-29

Family

ID=43991838

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112012010746A BR112012010746A2 (en) 2009-11-11 2010-10-26 method of producing a pulp of lignocellulosic material

Country Status (4)

Country Link
CN (1) CN102597366B (en)
BR (1) BR112012010746A2 (en)
SE (1) SE534885C2 (en)
WO (1) WO2011059376A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AR127493A1 (en) * 2021-10-29 2024-01-31 Alliance Sustainable Energy LIGNOCELLULOSE PRETREATMENT USING TWO STAGE ALKALI PROCESSES AND MECHANICAL REFINING

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4087318A (en) * 1974-03-14 1978-05-02 Mo Och Domsjo Aktiebolag Oxygen-alkali delignification of lignocellulosic material in the presence of a manganese compound
FI115469B (en) * 1996-02-19 2005-05-13 Kemira Oyj Process for the treatment of chemical cellulose material
WO2001059204A1 (en) * 2000-02-14 2001-08-16 Kiram Ab Process for oxygen pulping of lignocellulosic material and recovery of pulping chemicals
FI122838B (en) * 2005-03-31 2012-07-31 Metso Paper Inc A process for making pulp from lignocellulosic material
US8262856B2 (en) * 2007-06-18 2012-09-11 Andritz Inc. Processes and systems for the bleaching of lignocellulosic pulps following cooking with soda and anthraquinone

Also Published As

Publication number Publication date
WO2011059376A1 (en) 2011-05-19
CN102597366B (en) 2015-11-25
CN102597366A (en) 2012-07-18
SE534885C2 (en) 2012-01-31
SE0901436A1 (en) 2011-05-12

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Legal Events

Date Code Title Description
B25F Entry of change of name and/or headquarter and transfer of application, patent and certif. of addition of invention: change of name on requirement

Free format text: A FIM DE ATENDER A ALTERACAO DE NOME E A DE ENDERECO REQUERIDAS ATRAVES DA PETICAO NO 20140016963, DE 12/05/2014, E NECESSARIO ESCLARECER A DIVERGENCIA ENTRE O NOME DA EMPRESA TITULAR DO PEDIDO E O NOME QUE CONSTA NO DOCUMENTO DE ALTERACAO APRESENTADO.

Owner name: METSO PAPER, INC. (FI)

B25D Requested change of name of applicant approved

Owner name: VALMET TECHNOLOGIES OY (FI)

B25G Requested change of headquarter approved

Owner name: VALMET TECHNOLOGIES OY (FI)

B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B06T Formal requirements before examination [chapter 6.20 patent gazette]
B11E Dismissal acc. art. 34 of ipl - requirements for examination incomplete
B11T Dismissal of application maintained [chapter 11.20 patent gazette]