CA1179807A - Methode de digestion des matieres cellulosiques - Google Patents

Methode de digestion des matieres cellulosiques

Info

Publication number
CA1179807A
CA1179807A CA000396961A CA396961A CA1179807A CA 1179807 A CA1179807 A CA 1179807A CA 000396961 A CA000396961 A CA 000396961A CA 396961 A CA396961 A CA 396961A CA 1179807 A CA1179807 A CA 1179807A
Authority
CA
Canada
Prior art keywords
digester
liquor
liquid
temperature
spent liquor
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
CA000396961A
Other languages
English (en)
Inventor
Bertil Fagerlund
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA1179807A publication Critical patent/CA1179807A/fr
Expired legal-status Critical Current

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
    • D21C3/00—Pulping cellulose-containing materials
    • 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
    • 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
    • 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
    • D21C7/00—Digesters
    • D21C7/14—Means for circulating the lye

Landscapes

  • Paper (AREA)
CA000396961A 1981-03-05 1982-02-24 Methode de digestion des matieres cellulosiques Expired CA1179807A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US24080481A 1981-03-05 1981-03-05
US240,804 1981-03-05

Publications (1)

Publication Number Publication Date
CA1179807A true CA1179807A (fr) 1984-12-27

Family

ID=22908014

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000396961A Expired CA1179807A (fr) 1981-03-05 1982-02-24 Methode de digestion des matieres cellulosiques

Country Status (5)

Country Link
JP (1) JPS57176282A (fr)
BR (1) BR8201145A (fr)
CA (1) CA1179807A (fr)
FI (1) FI79724C (fr)
SE (1) SE463267B (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR7406365D0 (pt) * 1974-08-02 1974-11-19 Suzano Papel & Celulose Equipamento e metodo para delignificar materiais fibrosos com solucoes alcalinas
CA1079008A (fr) * 1975-10-24 1980-06-10 Cp Associates Limited Procede de fabrication de pate a papier au solvant

Also Published As

Publication number Publication date
SE8201334L (sv) 1982-09-06
SE463267B (sv) 1990-10-29
JPH0244957B2 (fr) 1990-10-05
JPS57176282A (en) 1982-10-29
BR8201145A (pt) 1983-01-11
FI79724B (fi) 1989-10-31
FI820643L (fi) 1982-09-06
FI79724C (fi) 1992-12-29

Similar Documents

Publication Publication Date Title
US4578149A (en) Process for digesting cellulosic material with heat recovery
CA1074609A (fr) Impregnation par deplacement
CA2761757C (fr) Procede pour la production de pate
US4834837A (en) Method for delignification of cellulose with oxygen
EP0502852B1 (fr) Chauffage par deplacement dans les lessiveurs en continu
US5059284A (en) Apparatus to displace a digester from both ends
EP0135461B1 (fr) Procédé de mise en pâte à lessiveur de charge multi-étape
WO2009136000A1 (fr) Procédé au sulfate avec préhydrolyse
US5643410A (en) Batch process for preparing kraft pulp in a batch digesting process
US5256255A (en) Displacement heating in continuous digesters
CN1109160C (zh) 改进的硫酸盐浆的间歇制备方法
SE539706C2 (en) Method for recovering hydrolyzate
AU684623B2 (en) Impact of temperature and alkali charge on pulp brightness
CN220266173U (zh) 化浆蒸煮系统
EP3026171B1 (fr) Procédé pour le déplacement en digesteurs par lots
CN102251425B (zh) 纸浆连续置换蒸煮工艺
US6139689A (en) Apparatus for digesting pulp in a displacement batch digester that uses displacement liquor having a sufficient hydrostatic head
US6939439B1 (en) Batch process for producing chemical pulp by removing and reintroducing calcium-containing spent liquor in the digester
US2121074A (en) Method and apparatus for digesting cellulosic material
JP2001507409A (ja) 蒸解装置内でパルプを蒸解する際に液体を連続的に案内する方法
US2175154A (en) Method for treating cellulosic material
EP1702101A1 (fr) Procede discontinu de preparation de pate
FI79724B (fi) Foerfarande foer kokning av cellulosamaterial.
US1653416A (en) Method and apparatus for treating fiber
EP0770158B1 (fr) Procede de blanchiment de pate de bois au peroxyde d'hydrogene

Legal Events

Date Code Title Description
MKEC Expiry (correction)
MKEX Expiry