BR8907631A - Processo para fabricar polpa quimio-mecanica a partir de madeira dura - Google Patents

Processo para fabricar polpa quimio-mecanica a partir de madeira dura

Info

Publication number
BR8907631A
BR8907631A BR898907631A BR8907631A BR8907631A BR 8907631 A BR8907631 A BR 8907631A BR 898907631 A BR898907631 A BR 898907631A BR 8907631 A BR8907631 A BR 8907631A BR 8907631 A BR8907631 A BR 8907631A
Authority
BR
Brazil
Prior art keywords
chemio
manufacturing
mechanical pulp
hard wood
wood
Prior art date
Application number
BR898907631A
Other languages
English (en)
Inventor
Ove Danielsson
Bo G S Falk
Michael Jackson
Original Assignee
Sunds Defibrator Ind 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 Sunds Defibrator Ind Ab filed Critical Sunds Defibrator Ind Ab
Publication of BR8907631A publication Critical patent/BR8907631A/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
    • 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
    • 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
    • D21C3/26—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
    • 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
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
BR898907631A 1988-09-14 1989-07-07 Processo para fabricar polpa quimio-mecanica a partir de madeira dura BR8907631A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8803244A SE460124B (sv) 1988-09-14 1988-09-14 Saett foer framstaellning av kemimekanisk massa av loevved
PCT/SE1989/000395 WO1990002835A1 (en) 1988-09-14 1989-07-07 Method of making chemi-mechanical pulp from hardwood

Publications (1)

Publication Number Publication Date
BR8907631A true BR8907631A (pt) 1991-07-30

Family

ID=20373326

Family Applications (1)

Application Number Title Priority Date Filing Date
BR898907631A BR8907631A (pt) 1988-09-14 1989-07-07 Processo para fabricar polpa quimio-mecanica a partir de madeira dura

Country Status (8)

Country Link
EP (1) EP0434696A1 (pt)
AU (1) AU616999B2 (pt)
BR (1) BR8907631A (pt)
CA (1) CA1334240C (pt)
ES (1) ES2017145A6 (pt)
FI (1) FI911242A0 (pt)
SE (1) SE460124B (pt)
WO (1) WO1990002835A1 (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2634233B1 (fr) * 1988-07-12 1995-04-14 Atochem Procede de fabrication de pates chimicothermomecaniques blanchies
US6284727B1 (en) 1993-04-07 2001-09-04 Scios, Inc. Prolonged delivery of peptides
US7384502B2 (en) * 2002-12-24 2008-06-10 Nippon Paper Industries Co., Ltd. Process for impregnating, refining, and bleaching wood chips having low bleachability to prepare mechanical pulps having high brightness
CN100545347C (zh) * 2006-03-17 2009-09-30 中国科学院大连化学物理研究所 一种cmp法造纸制浆的方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE413684C (sv) * 1974-09-23 1987-05-18 Mo Och Domsjoe Ab Forfarande for framstellning av cellulosamassa i utbytesomradet 65-95 %
SE454186C (sv) * 1985-03-13 1989-09-25 Eka Nobel Ab Saett foer framstaellning av kemimekanisk massa
SE456430B (sv) * 1985-11-06 1988-10-03 Sunds Defibrator Sett for framstellning av mekanisk massa
US4718980A (en) * 1985-12-30 1988-01-12 Weyerhaeuser Company Interstage treatment of mechanical pulp
DE3802401A1 (de) * 1988-01-28 1989-08-03 Degussa Verfahren zur herstellung von halbgebleichtem kraftzellstoff

Also Published As

Publication number Publication date
ES2017145A6 (es) 1991-01-01
AU4037489A (en) 1990-04-02
EP0434696A1 (en) 1991-07-03
SE8803244D0 (sv) 1988-09-14
WO1990002835A1 (en) 1990-03-22
SE460124B (sv) 1989-09-11
AU616999B2 (en) 1991-11-14
FI911242A0 (fi) 1991-03-13
CA1334240C (en) 1995-02-07

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