FI59629C - Cellulosaframstaellning medelst sulfitfoerfarande - Google Patents

Cellulosaframstaellning medelst sulfitfoerfarande Download PDF

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Publication number
FI59629C
FI59629C FI752659A FI752659A FI59629C FI 59629 C FI59629 C FI 59629C FI 752659 A FI752659 A FI 752659A FI 752659 A FI752659 A FI 752659A FI 59629 C FI59629 C FI 59629C
Authority
FI
Finland
Prior art keywords
process according
weight
cooking
temperature
sulfur dioxide
Prior art date
Application number
FI752659A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI59629B (fi
FI752659A (xx
Inventor
Reinhold Schadler
Original Assignee
Waldhof Aschaffenburg Papier
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 Waldhof Aschaffenburg Papier filed Critical Waldhof Aschaffenburg Papier
Publication of FI752659A publication Critical patent/FI752659A/fi
Publication of FI59629B publication Critical patent/FI59629B/fi
Application granted granted Critical
Publication of FI59629C publication Critical patent/FI59629C/fi

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
    • D21C3/22—Other features of pulping processes
    • D21C3/26—Multistage processes
    • D21C3/266—Multistage processes the same pulping agent being used in all stages
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/02—Chip soaking

Landscapes

  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
FI752659A 1974-09-24 1975-09-23 Cellulosaframstaellning medelst sulfitfoerfarande FI59629C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19742445523 DE2445523A1 (de) 1974-09-24 1974-09-24 Verfahren zur herstellung von zellstoff
DE2445523 1974-09-24

Publications (3)

Publication Number Publication Date
FI752659A FI752659A (xx) 1976-03-25
FI59629B FI59629B (fi) 1981-05-29
FI59629C true FI59629C (fi) 1981-09-10

Family

ID=5926572

Family Applications (1)

Application Number Title Priority Date Filing Date
FI752659A FI59629C (fi) 1974-09-24 1975-09-23 Cellulosaframstaellning medelst sulfitfoerfarande

Country Status (14)

Country Link
US (1) US4141787A (xx)
AT (1) AT351358B (xx)
BE (1) BE833712A (xx)
DE (1) DE2445523A1 (xx)
DK (1) DK141450C (xx)
FI (1) FI59629C (xx)
FR (1) FR2286233A1 (xx)
GB (1) GB1527607A (xx)
IE (1) IE42219B1 (xx)
IT (1) IT1056128B (xx)
LU (1) LU73439A1 (xx)
NL (1) NL7511238A (xx)
NO (1) NO147390C (xx)
SE (1) SE421713B (xx)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4307660C1 (de) * 1993-03-11 1994-08-04 Feldmuehle Ag Stora Herstellung chemo-mechanischer und/oder chemo-thermo-mechanischer Holzstoffe
PT101999B (pt) * 1997-04-28 2003-09-30 Joao Manuel Almeida Oliveira B Processo quimico de deslenhificacao da madeira utilizando como reagente activo o composto - bissulfito duplo de magnesio e amonio
CN112726252B (zh) * 2020-11-30 2022-11-25 山东华泰纸业股份有限公司 一种造纸厂废渣的综合利用方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE564738C (de) * 1931-01-09 1932-11-23 Patentaktiebolaget Groendal Ra Verfahren zur Herstellung von Sulfitzellstoff
US2192239A (en) * 1937-12-07 1940-03-05 Weyerhaeuser Timber Co Process of digesting wood or other ligno-cellulose materials
BE496841A (xx) * 1949-07-12
US2859108A (en) * 1953-05-27 1958-11-04 Rosenblads Patenter Ab Method for preparing digestion acid for digestion of sulphite
US3046182A (en) * 1956-01-13 1962-07-24 Smith Paper Mills Ltd Howard Sulphite pulping process
US3067086A (en) * 1959-09-15 1962-12-04 Columbia Cellulose Company Ltd Pulping process
DE1198666B (de) * 1961-10-20 1965-08-12 Metallgesellschaft Ag Verfahren zur Erzeugung von Zellstoff
US3383277A (en) * 1967-02-06 1968-05-14 Scott Paper Co Two-stage pulping process with an isothermal first stage

Also Published As

Publication number Publication date
NO753228L (xx) 1976-03-25
FR2286233B1 (xx) 1981-04-30
ATA728875A (de) 1978-12-15
LU73439A1 (xx) 1976-04-13
NO147390B (no) 1982-12-20
FI59629B (fi) 1981-05-29
IE42219B1 (en) 1980-07-02
US4141787A (en) 1979-02-27
DK141450C (da) 1980-09-29
FR2286233A1 (fr) 1976-04-23
IE42219L (en) 1976-03-24
NO147390C (no) 1983-03-30
BE833712A (fr) 1976-01-16
GB1527607A (en) 1978-10-04
DK425975A (da) 1976-03-25
DK141450B (da) 1980-03-17
SE7510677L (sv) 1976-03-25
NL7511238A (nl) 1976-03-26
AT351358B (de) 1979-07-25
SE421713B (sv) 1982-01-25
FI752659A (xx) 1976-03-25
DE2445523A1 (de) 1976-04-01
IT1056128B (it) 1982-01-30

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MM Patent lapsed

Owner name: PWA GRAFISCHE PAPIERE GMBH