CA1322827C - Process and equipment for pretreatment of cellulosic raw-material - Google Patents

Process and equipment for pretreatment of cellulosic raw-material

Info

Publication number
CA1322827C
CA1322827C CA 590344 CA590344A CA1322827C CA 1322827 C CA1322827 C CA 1322827C CA 590344 CA590344 CA 590344 CA 590344 A CA590344 A CA 590344A CA 1322827 C CA1322827 C CA 1322827C
Authority
CA
Canada
Prior art keywords
solution
penetration
chips
vacuum
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
CA 590344
Other languages
English (en)
French (fr)
Inventor
Osmo Aho
Antti Aho
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 CA1322827C publication Critical patent/CA1322827C/en
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

Landscapes

  • Paper (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
CA 590344 1988-02-08 1989-02-07 Process and equipment for pretreatment of cellulosic raw-material Expired - Fee Related CA1322827C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI880560A FI80083C (sv) 1988-02-08 1988-02-08 Förfarande och anordning för förbehandling av cellulosahaltigt råämne
FI880560 1988-02-08

Publications (1)

Publication Number Publication Date
CA1322827C true CA1322827C (en) 1993-10-12

Family

ID=8525866

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 590344 Expired - Fee Related CA1322827C (en) 1988-02-08 1989-02-07 Process and equipment for pretreatment of cellulosic raw-material

Country Status (6)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI80083C (sv) * 1988-02-08 1990-04-10 Antti Aho Förfarande och anordning för förbehandling av cellulosahaltigt råämne
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 (sv) * 1988-02-08 1990-04-10 Antti Aho Förfarande och anordning för förbehandling av cellulosahaltigt råämne

Also Published As

Publication number Publication date
FR2650604B1 (fr) 1995-02-10
WO1989007170A1 (en) 1989-08-10
FR2650604A1 (fr) 1991-02-08
SE507694C2 (sv) 1998-07-06
SE9002601D0 (sv) 1990-08-08
FI880560A (fi) 1989-08-09
FI80083C (sv) 1990-04-10
FI80083B (fi) 1989-12-29
FI880560A0 (fi) 1988-02-08
SE9002601L (sv) 1990-08-08
DE3990074C2 (de) 2000-03-16

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Legal Events

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