BR0008237A - Processo substancialmente livre de enxofre para a produção de polpa quìmica a partir de material lignocelulósico e a recuperação de substâncias quìmicas usadas no citado processo - Google Patents

Processo substancialmente livre de enxofre para a produção de polpa quìmica a partir de material lignocelulósico e a recuperação de substâncias quìmicas usadas no citado processo

Info

Publication number
BR0008237A
BR0008237A BR0008237-6A BR0008237A BR0008237A BR 0008237 A BR0008237 A BR 0008237A BR 0008237 A BR0008237 A BR 0008237A BR 0008237 A BR0008237 A BR 0008237A
Authority
BR
Brazil
Prior art keywords
lignocellulosic material
recovery
chemical
substantially sulfur
production
Prior art date
Application number
BR0008237-6A
Other languages
English (en)
Other versions
BR0008237B1 (pt
Inventor
Lars Stigsson
Original Assignee
Kiram Ab
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 Kiram Ab filed Critical Kiram Ab
Publication of BR0008237A publication Critical patent/BR0008237A/pt
Publication of BR0008237B1 publication Critical patent/BR0008237B1/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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/0057—Oxidation of liquors, e.g. in order to reduce the losses of sulfur compounds, followed by evaporation or combustion if the liquor in question is a black liquor
    • 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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/08—Pretreatment of the finely-divided materials before digesting with oxygen-generating 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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/10—Physical methods for facilitating impregnation
    • 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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/12—Combustion of pulp liquors
    • 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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/12—Combustion of pulp liquors
    • D21C11/125—Decomposition of the pulp liquors in reducing atmosphere or in the absence of oxidants, i.e. gasification or pyrolysis
    • 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
    • D21C3/22—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
    • D21C3/263—Multistage processes at least one stage being in presence of oxygen
    • 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

Landscapes

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

Abstract

"PROCESSO SUBSTANCIALMENTE LIVRE DE ENXOFRE PARA A PRODUçãO DE POLPA QUìMICA A PARTIR DE MATERIAL LIGNOCELULÊSICO E A RECUPERAçãO DE SUBSTâNCIAS QUìMICAS USADAS NO CITADO PROCESSO". O processo da presente invenção refere-se ao processo substancialmente livre de enxofre para a fabricação da polpa química com um sistema integrado de recuperação para recuperação de substâncias químicas de formação de polpa. O processo tema é executado em diversos estágios envolvendo tratamento físico e químico de material lignocelulósico a fim de aumentar a acessibilidade do material lignocelulósico a reações com agente de deslignificação de base em oxigênio. Licor de celulose gasto compreendendo componentes de lignina e reagentes químicos gastos é completamente ou parcialmente oxidado no gerador de gás em que a corrente de gás natural e a corrente de substâncias químicas alcalinas e reagentes químicos é formada para reciclo subseq³ente e reutilização no processo de fabricação de polpa.
BRPI0008237-6A 1999-02-15 2000-02-14 processo substancialmente livre de enxofre para a produção de polpa quìmica a partir de material lignocelulósico e a recuperação de substáncias quìmicas usadas no citado processo. BR0008237B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9900191 1999-02-15
SEPCT/SE99/00191 1999-02-15
PCT/SE2000/000288 WO2000047812A1 (en) 1999-02-15 2000-02-14 Process for oxygen pulping of lignocellulosic material and recovery of pulping chemicals

Publications (2)

Publication Number Publication Date
BR0008237A true BR0008237A (pt) 2001-11-06
BR0008237B1 BR0008237B1 (pt) 2010-12-28

Family

ID=20414187

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0008237-6A BR0008237B1 (pt) 1999-02-15 2000-02-14 processo substancialmente livre de enxofre para a produção de polpa quìmica a partir de material lignocelulósico e a recuperação de substáncias quìmicas usadas no citado processo.

Country Status (9)

Country Link
US (1) US6770168B1 (pt)
EP (1) EP1161592B1 (pt)
JP (1) JP2002536563A (pt)
CN (1) CN1213197C (pt)
AT (1) ATE277222T1 (pt)
BR (1) BR0008237B1 (pt)
CA (1) CA2356444C (pt)
DE (1) DE60014045D1 (pt)
WO (1) WO2000047812A1 (pt)

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Also Published As

Publication number Publication date
US6770168B1 (en) 2004-08-03
CN1213197C (zh) 2005-08-03
CA2356444A1 (en) 2000-08-17
CA2356444C (en) 2009-12-15
WO2000047812A1 (en) 2000-08-17
EP1161592A1 (en) 2001-12-12
EP1161592B1 (en) 2004-09-22
BR0008237B1 (pt) 2010-12-28
ATE277222T1 (de) 2004-10-15
DE60014045D1 (de) 2004-10-28
CN1340121A (zh) 2002-03-13
JP2002536563A (ja) 2002-10-29

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