FR2650604B1 - Procede et equipement pour le pretraitement de matiere cellulosique brute - Google Patents

Procede et equipement pour le pretraitement de matiere cellulosique brute

Info

Publication number
FR2650604B1
FR2650604B1 FR8910541A FR8910541A FR2650604B1 FR 2650604 B1 FR2650604 B1 FR 2650604B1 FR 8910541 A FR8910541 A FR 8910541A FR 8910541 A FR8910541 A FR 8910541A FR 2650604 B1 FR2650604 B1 FR 2650604B1
Authority
FR
France
Prior art keywords
pretreatment
equipment
cellulosic material
raw cellulosic
raw
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 - Fee Related
Application number
FR8910541A
Other languages
English (en)
Other versions
FR2650604A1 (fr
Inventor
Aho Osmo
Aho Antti
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
Publication of FR2650604A1 publication Critical patent/FR2650604A1/fr
Application granted granted Critical
Publication of FR2650604B1 publication Critical patent/FR2650604B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/10—Physical methods for facilitating impregnation
FR8910541A 1988-02-08 1989-08-04 Procede et equipement pour le pretraitement de matiere cellulosique brute Expired - Fee Related FR2650604B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI880560A FI80083C (fi) 1988-02-08 1988-02-08 Foerfarande och anordning foer foerbehandling av cellulosahaltigt raoaemne.

Publications (2)

Publication Number Publication Date
FR2650604A1 FR2650604A1 (fr) 1991-02-08
FR2650604B1 true FR2650604B1 (fr) 1995-02-10

Family

ID=8525866

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8910541A Expired - Fee Related FR2650604B1 (fr) 1988-02-08 1989-08-04 Procede et equipement pour le pretraitement de matiere cellulosique brute

Country Status (6)

Country Link
CA (1) CA1322827C (fr)
DE (1) DE3990074C2 (fr)
FI (1) FI80083C (fr)
FR (1) FR2650604B1 (fr)
SE (1) SE507694C2 (fr)
WO (1) WO1989007170A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI80083C (fi) * 1988-02-08 1990-04-10 Antti Aho Foerfarande och anordning foer foerbehandling av cellulosahaltigt raoaemne.
FI910577A (fi) * 1991-02-06 1992-08-07 Antti Aho Reglering av en process.
FI934281A0 (fi) * 1993-09-29 1993-09-29 Antti Aho Foerbehandling av flis

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3076501A (en) * 1956-11-08 1963-02-05 Escher Wyss Ag Apparatus for treating fibrous materials in the production of cellulose or semi-cellulose
DE1070013B (de) * 1957-07-10 1959-11-26 Escher Wyss G.m.b.H., Ravensburg Verfahren und Einrichtung zur Behandlung faserhaltiger Stoffe bei der Erzeugung von Zellstoff oder Halbzellstoff
US3215587A (en) * 1963-01-21 1965-11-02 Lummus Co Continuous process and apparatus for delignification of cellulosic material
US3347741A (en) * 1964-01-13 1967-10-17 Crane Co Feeder for solid materials
US3446701A (en) * 1967-12-28 1969-05-27 Us Agriculture Apparatus for impregnating and chemically converting cellulose-containing materials
FI80083C (fi) * 1988-02-08 1990-04-10 Antti Aho Foerfarande och anordning foer foerbehandling av cellulosahaltigt raoaemne.

Also Published As

Publication number Publication date
CA1322827C (fr) 1993-10-12
FI880560A0 (fi) 1988-02-08
SE9002601D0 (sv) 1990-08-08
SE507694C2 (sv) 1998-07-06
DE3990074C2 (de) 2000-03-16
FI80083C (fi) 1990-04-10
SE9002601L (sv) 1990-08-08
FR2650604A1 (fr) 1991-02-08
FI880560A (fi) 1989-08-09
WO1989007170A1 (fr) 1989-08-10
FI80083B (fi) 1989-12-29

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Legal Events

Date Code Title Description
ST Notification of lapse