BR7703256A - Processo para deslignificacao e alvejamento de polpas lignocelulosicas - Google Patents

Processo para deslignificacao e alvejamento de polpas lignocelulosicas

Info

Publication number
BR7703256A
BR7703256A BR3256/77A BR7703256A BR7703256A BR 7703256 A BR7703256 A BR 7703256A BR 3256/77 A BR3256/77 A BR 3256/77A BR 7703256 A BR7703256 A BR 7703256A BR 7703256 A BR7703256 A BR 7703256A
Authority
BR
Brazil
Prior art keywords
designification
lighting
lignocellulosic pulp
lignocellulosic
pulp
Prior art date
Application number
BR3256/77A
Other languages
English (en)
Inventor
A Kempf
R Phillips
Original Assignee
Int Paper Co
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
Priority claimed from US05/705,869 external-priority patent/US4080249A/en
Application filed by Int Paper Co filed Critical Int Paper Co
Publication of BR7703256A publication Critical patent/BR7703256A/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
    • D21C9/1073—Bleaching ; Apparatus therefor with O3
BR3256/77A 1976-06-02 1977-05-20 Processo para deslignificacao e alvejamento de polpas lignocelulosicas BR7703256A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US69206276A 1976-06-02 1976-06-02
US05/705,869 US4080249A (en) 1976-06-02 1976-07-16 Delignification and bleaching of a lignocellulosic pulp slurry with ozone

Publications (1)

Publication Number Publication Date
BR7703256A true BR7703256A (pt) 1978-01-31

Family

ID=27104896

Family Applications (1)

Application Number Title Priority Date Filing Date
BR3256/77A BR7703256A (pt) 1976-06-02 1977-05-20 Processo para deslignificacao e alvejamento de polpas lignocelulosicas

Country Status (9)

Country Link
JP (1) JPS52148204A (pt)
AU (1) AU509882B2 (pt)
BR (1) BR7703256A (pt)
CA (1) CA1090510A (pt)
FI (1) FI62362C (pt)
FR (1) FR2353674A1 (pt)
NO (1) NO771468L (pt)
NZ (1) NZ184228A (pt)
SE (1) SE415492B (pt)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2475084A1 (fr) * 1979-11-23 1981-08-07 Weyerhaeuser Co Delignification par l'ozone a faible consistance
JPS5679797A (en) * 1979-11-30 1981-06-30 Weyerhaeuser Co Bleaching of cellulose fiber
FR2620744A1 (fr) * 1987-09-17 1989-03-24 Degremont Procede de traitement par l'ozone de materiaux ligno-cellulosiques, notamment de pates a papier et reacteur pour la mise en oeuvre de ce procede
EP0325890B1 (de) * 1988-01-25 1993-06-09 Acetocell GmbH & Co. KG Verfahren zur Behandlung von Lignin enthaltender Cellulosemasse mit Ozon
FI89516B (fi) * 1989-05-10 1993-06-30 Ahlstroem Oy Foerfarande foer blekning av cellulosamassa med otson
AU636173B2 (en) * 1989-10-30 1993-04-22 Lenzing Aktiengesellschaft Method for the chlorine-free bleaching of pulps
DE69019350T2 (de) * 1990-05-17 1996-02-15 Union Camp Patent Holding Umweltfreundlicheres verfahren zum bleichen von lignocellulosischen materialien.

Also Published As

Publication number Publication date
SE415492B (sv) 1980-10-06
AU2465177A (en) 1978-11-02
NO771468L (no) 1977-12-05
CA1090510A (en) 1980-12-02
FI62362B (fi) 1982-08-31
SE7706371L (sv) 1977-12-03
JPS52148204A (en) 1977-12-09
FR2353674A1 (fr) 1977-12-30
FI771500A (pt) 1977-12-03
AU509882B2 (en) 1980-05-29
FI62362C (fi) 1982-12-10
NZ184228A (en) 1980-04-28

Similar Documents

Publication Publication Date Title
BR7806832A (pt) Processo para tratamento de polpa mecanica refinada e polpa termomecanica
BR7701695A (pt) Processo e aparelho para producao de polpa
BR7605856A (pt) Processo para deslignificacao de material lignocelulosico
BR7903508A (pt) Fralda,e processo para faze-la
BR8001125A (pt) Processo para fabricacao de estruturas fibrosas fibriladas e sua aplicacao
BR8105929A (pt) Desintegrador e processo para operacao do desintegrador
BR7905464A (pt) Instalacao e processo para producao de calcados
BR7901214A (pt) Processo para preparacao de cicloalcanois e cicloalcanonas
BR7808122A (pt) Fibra de poliester hidrofila e processo para sua producao
BR7600709A (pt) Processo para produzir polpa celulosica
BR8302088A (pt) Processo para preparar cicloexanol e cicloexanona
BR7805665A (pt) Processo para produzir polpa de lignocelulose
BR8301352A (pt) Involucro celulosico e processo para sua producao
BR7801842A (pt) Processo para producao de nitroso-benzeno
BR7703256A (pt) Processo para deslignificacao e alvejamento de polpas lignocelulosicas
BR7702362A (pt) Composicao e processo para o tratamento de uma formacao de terreno
BR8108805A (pt) Processo para produzir polpas
BR7702713A (pt) Processo para deslignificacao de material lignocelulosico
BR7804745A (pt) Processo para o tingimento de material fibroso de poliacrilonitrila
BR7802596A (pt) Processo para tratar polpa contendo celulose
BR7701186A (pt) Processo para produzir uma material composto e material composto
BR8102608A (pt) Processo para preparar mercapto-alcoois
BR8008028A (pt) Processo para desidrocopulacao de tolueno
BR7800185A (pt) Processo para producao de tiazolino-2-tionas e tiazolino-2-tionas
BR8005950A (pt) Processo de formacao de polpas de refinadora