BR8900259A - Processo para fabricacao de celulose semialvejada,tipo"kraft" - Google Patents

Processo para fabricacao de celulose semialvejada,tipo"kraft"

Info

Publication number
BR8900259A
BR8900259A BR898900259A BR8900259A BR8900259A BR 8900259 A BR8900259 A BR 8900259A BR 898900259 A BR898900259 A BR 898900259A BR 8900259 A BR8900259 A BR 8900259A BR 8900259 A BR8900259 A BR 8900259A
Authority
BR
Brazil
Prior art keywords
semial
kraft
targeted
cellulose
manufacture
Prior art date
Application number
BR898900259A
Other languages
English (en)
Inventor
Hans Ulrich Suss
Jurgen Meier
Oswald Helmling
Original Assignee
Degussa
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 Degussa filed Critical Degussa
Publication of BR8900259A publication Critical patent/BR8900259A/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
    • 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
BR898900259A 1988-01-28 1989-01-23 Processo para fabricacao de celulose semialvejada,tipo"kraft" BR8900259A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3802401A DE3802401A1 (de) 1988-01-28 1988-01-28 Verfahren zur herstellung von halbgebleichtem kraftzellstoff

Publications (1)

Publication Number Publication Date
BR8900259A true BR8900259A (pt) 1989-09-19

Family

ID=6346109

Family Applications (1)

Application Number Title Priority Date Filing Date
BR898900259A BR8900259A (pt) 1988-01-28 1989-01-23 Processo para fabricacao de celulose semialvejada,tipo"kraft"

Country Status (9)

Country Link
EP (1) EP0325731A1 (pt)
AU (1) AU607026B2 (pt)
BR (1) BR8900259A (pt)
DE (1) DE3802401A1 (pt)
FI (1) FI890100A (pt)
NO (1) NO885525L (pt)
NZ (1) NZ227748A (pt)
PT (1) PT89533A (pt)
ZA (1) ZA889289B (pt)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE460124B (sv) * 1988-09-14 1989-09-11 Sunds Defibrator Saett foer framstaellning av kemimekanisk massa av loevved
US5607546A (en) * 1990-02-13 1997-03-04 Molnlycke Ab CTMP-process
DE4004364A1 (de) * 1990-02-13 1991-08-14 Sueddeutsche Kalkstickstoff Verfahren zur chlorfreien bleiche und delignifizierung von zellstoff
SE466060C (sv) 1990-02-13 1995-07-11 Moelnlycke Ab Absorberande kemitermomekanisk massa och framställning därav
NZ237019A (en) * 1990-02-19 1992-11-25 Amcor Ltd Bleaching paper pulp by initially treating with oxygen and/or hydrogen peroxide and subsequently treating with a bleaching agent without intervening washing steps
US6398908B1 (en) 1991-04-30 2002-06-04 Eka Nobel Ab Process for acid bleaching of lignocellulose-containing pulp with a magnesium compound
BE1005800A3 (fr) * 1992-05-22 1994-02-01 Solvay Interox Procede pour la delignification et le blanchiment d'une pate a papier chimique.
WO1995008021A1 (en) * 1993-09-15 1995-03-23 Kamyr, Inc. Eop stage for chlorine free bleaching
DE29911772U1 (de) 1999-07-06 1999-09-02 Tien Dieter Reinigungsgerät für glatte Flächen, insbesondere zum Putzen von Fenstern

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1601408A (pt) * 1967-06-20 1970-08-24
FI45574C (fi) * 1970-05-11 1972-07-10 Kymin Oy Kymmene Ab Menetelmä selluloosapitoisten aineiden valkaisemiseksi.
FR2457339A1 (fr) * 1979-05-25 1980-12-19 Interox Procede pour la delignification et le blanchiment de pates cellulosiques chimiques et semi-chimiques

Also Published As

Publication number Publication date
AU2679888A (en) 1989-08-03
ZA889289B (en) 1989-09-27
FI890100A (fi) 1989-07-29
AU607026B2 (en) 1991-02-21
FI890100A0 (fi) 1989-01-09
NZ227748A (en) 1990-04-26
PT89533A (pt) 1989-10-04
EP0325731A1 (de) 1989-08-02
NO885525D0 (no) 1988-12-13
NO885525L (no) 1989-07-31
DE3802401A1 (de) 1989-08-03

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