CA1042160A - Digestion du bois au gaz d'alcali/oxygene - Google Patents

Digestion du bois au gaz d'alcali/oxygene

Info

Publication number
CA1042160A
CA1042160A CA208,553A CA208553A CA1042160A CA 1042160 A CA1042160 A CA 1042160A CA 208553 A CA208553 A CA 208553A CA 1042160 A CA1042160 A CA 1042160A
Authority
CA
Canada
Prior art keywords
digestion
wood
process according
fibers
oxygen
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
CA208,553A
Other languages
English (en)
Other versions
CA208553S (en
Inventor
Hans O. Samuelson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mo och Domsjo AB
Original Assignee
Mo och Domsjo 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 Mo och Domsjo AB filed Critical Mo och Domsjo AB
Application granted granted Critical
Publication of CA1042160A publication Critical patent/CA1042160A/fr
Expired legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C3/00Pulping cellulose-containing materials
    • D21C3/22Other features of pulping processes
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C3/00Pulping cellulose-containing materials
    • D21C3/02Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
    • D21C3/026Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of O2, e.g. air

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Joining Of Building Structures In Genera (AREA)
CA208,553A 1973-09-10 1974-09-05 Digestion du bois au gaz d'alcali/oxygene Expired CA1042160A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7312302A SE392926B (sv) 1973-09-10 1973-09-10 Forfarande for alkalisk uppslutning av ved

Publications (1)

Publication Number Publication Date
CA1042160A true CA1042160A (fr) 1978-11-14

Family

ID=20318482

Family Applications (1)

Application Number Title Priority Date Filing Date
CA208,553A Expired CA1042160A (fr) 1973-09-10 1974-09-05 Digestion du bois au gaz d'alcali/oxygene

Country Status (12)

Country Link
JP (1) JPS5149001B2 (fr)
AT (1) AT339723B (fr)
BR (1) BR7407491D0 (fr)
CA (1) CA1042160A (fr)
CH (1) CH589172A5 (fr)
FI (1) FI56036C (fr)
FR (1) FR2243296B1 (fr)
GB (1) GB1455399A (fr)
IT (1) IT1020750B (fr)
NO (1) NO140991C (fr)
SE (1) SE392926B (fr)
ZA (1) ZA745653B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52121502A (en) * 1976-04-07 1977-10-13 V Nauchinoopuroizubuodosutobue Process for producing halfffinished products from ground vegetable material
JPS55153664U (fr) * 1979-04-20 1980-11-06

Also Published As

Publication number Publication date
FI56036C (fi) 1979-11-12
SE392926B (sv) 1977-04-25
SE7312302L (fr) 1975-03-11
JPS5053602A (fr) 1975-05-12
FR2243296A1 (fr) 1975-04-04
NO140991C (no) 1979-12-19
FI56036B (fi) 1979-07-31
FR2243296B1 (fr) 1976-12-31
CH589172A5 (fr) 1977-06-30
NO743209L (fr) 1975-04-07
GB1455399A (en) 1976-11-10
JPS5149001B2 (fr) 1976-12-24
AT339723B (de) 1977-11-10
ZA745653B (en) 1975-11-26
ATA723874A (de) 1977-02-15
NO140991B (no) 1979-09-10
IT1020750B (it) 1977-12-30
BR7407491D0 (pt) 1975-09-09
FI263974A (fr) 1975-03-11
DE2441440A1 (de) 1975-03-27
DE2441440B2 (de) 1976-08-19

Similar Documents

Publication Publication Date Title
US4248662A (en) Oxygen pulping with recycled liquor
US5041192A (en) Supercritical delignification of wood
US4486267A (en) Chemithermomechanical pulping process employing separate alkali and sulfite treatments
US4294653A (en) Process for manufacturing chemimechanical cellulose pulp in a high yield within the range from 65 to 95%
US5002635A (en) Method for producing pulp using pre-treatment with stabilizers and refining
JP3348387B2 (ja) ギ酸を添加した酢酸によるパルプの製法
US3944463A (en) Pulping of lignocellulosic material with oxygen in two stages at increasing pH
US5074960A (en) Lignin removal method using ozone and acetic acid
US5338405A (en) Production of fiber pulp by impregnating the lignocellulosic material with an aqueous alcoholic SO2 solution prior to defibration
CA2221619A1 (fr) Fabrication de pate a papier avec un solvant organique modifie
CA2297586A1 (fr) Methode et dispositif d'amelioration du rendement en fibres
EP0509905B1 (fr) Procédé de préparation de pâte à papier à haut rendement et blanchie
NO140535B (no) Fremgangsmaate for fremstilling av cellulosemasse ved oppslutning med oksygen
Claus et al. Monoethanolamine (MEA) pulping of beech and spruce wood for production of dissolving pulp
CA1042160A (fr) Digestion du bois au gaz d'alcali/oxygene
US4113553A (en) Sodium sulfide pulping with hydrogen sulfide generation
US20100269994A1 (en) Method for treating ligno-cellulosic materials
US6569285B2 (en) Process for gas phase pretreating of lignocellulosic containing material
US5500084A (en) Method and apparatus for pulping cellulosic material using a vessel with an impergnation zone and an attrition zone
EP0239583B1 (fr) Procede de pre-traitement d'une pulpe avec des stabilisateurs et du peroxyde avant le raffinage mecanique
AU779711B2 (en) Pulping process
CA1096559A (fr) Traduction non-disponible
Abad et al. Totally chlorine free bleaching of Eucalyptus globulus dissolving pulps delignified with peroxyformic acid and formic acid
US4534397A (en) Method for producing chemimechanical high yield pulp using an oxygen alkali treatment followed by an oxygen mechanical defibration
JPH0114357B2 (fr)