FI54343C - Saett att ur ved framstaella en traecellulosa med hoeg ljushet - Google Patents

Saett att ur ved framstaella en traecellulosa med hoeg ljushet

Info

Publication number
FI54343C
FI54343C FI971/71A FI97171A FI54343C FI 54343 C FI54343 C FI 54343C FI 971/71 A FI971/71 A FI 971/71A FI 97171 A FI97171 A FI 97171A FI 54343 C FI54343 C FI 54343C
Authority
FI
Finland
Prior art keywords
traecellulosa
ljushet
framstaella
ved
saett att
Prior art date
Application number
FI971/71A
Other languages
English (en)
Finnish (fi)
Other versions
FI54343B (fi
Inventor
Hans Olof Samuelson
Sture Erik Olof Noreus
Original Assignee
Mo Och Domsjoe 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 Domsjoe Ab filed Critical Mo Och Domsjoe Ab
Publication of FI54343B publication Critical patent/FI54343B/fi
Application granted granted Critical
Publication of FI54343C publication Critical patent/FI54343C/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
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
    • D21C3/026—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of O2, e.g. air
    • 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
    • D21C3/263—Multistage processes at least one stage being in presence of oxygen

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
FI971/71A 1970-05-13 1971-04-06 Saett att ur ved framstaella en traecellulosa med hoeg ljushet FI54343C (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE06569/70A SE355614B (fr) 1970-05-13 1970-05-13

Publications (2)

Publication Number Publication Date
FI54343B FI54343B (fi) 1978-07-31
FI54343C true FI54343C (fi) 1978-11-10

Family

ID=20269035

Family Applications (1)

Application Number Title Priority Date Filing Date
FI971/71A FI54343C (fi) 1970-05-13 1971-04-06 Saett att ur ved framstaella en traecellulosa med hoeg ljushet

Country Status (12)

Country Link
US (1) US3769152A (fr)
JP (1) JPS5025042B1 (fr)
AT (1) AT304251B (fr)
BR (1) BR7102728D0 (fr)
CA (1) CA935957A (fr)
DE (1) DE2123542C3 (fr)
FI (1) FI54343C (fr)
FR (1) FR2091515A5 (fr)
NO (1) NO134563C (fr)
SE (1) SE355614B (fr)
SU (1) SU574164A3 (fr)
ZA (1) ZA712744B (fr)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI52877B (fr) * 1972-11-16 1977-08-31 Ahlstroem Oy
SE373395B (sv) * 1972-12-19 1975-02-03 Mo Och Domsjoe Ab Forfarande for framstellning av cellulosamassa med hog ljushet genom uppslutning av ved med syrgas under tryck i nervaro av en kokvetska forsatt med basiska neutralisationsmedel
SE379069B (fr) * 1973-08-27 1975-09-22 Kamyr Ab
GB1505529A (en) * 1974-06-14 1978-03-30 Mo Och Domsjoe Ab Method for the oxygen-gas delignification of lignocellulosic material and apparatus for carrying out the method
US4152197A (en) * 1974-09-23 1979-05-01 Mo Och Domsjo Ab Process for preparing high-yield cellulose pulps by vapor phase pulping an unpulped portion of lignocellulosic material and a partially chemically pulped portion
US4119486A (en) * 1975-08-14 1978-10-10 Westvaco Corporation Process for bleaching wood pulp with ozone in the presence of a cationic surfactant
US4338158A (en) * 1976-04-09 1982-07-06 Weyerhaeuser Company Pulping in the presence of a protector
US4172006A (en) * 1976-08-26 1979-10-23 Weyerhaeuser Company Method of delignifying wood chips with oxygen by adding cooking liquor under pressure
CA1079457A (fr) * 1976-09-13 1980-06-17 Robert C. Eckert Procede de blanchissage avec des ions manganiques
JPS6059357B2 (ja) * 1977-05-18 1985-12-24 本州製紙株式会社 パルプの製造方法
US4295926A (en) * 1979-06-15 1981-10-20 Weyerhaeuser Company Method and apparatus for treating pulp with oxygen
US4303470A (en) * 1979-06-15 1981-12-01 Weyerhaeuser Company Method and apparatus for mixing gases with a wood pulp slurry
US4298426A (en) * 1979-06-15 1981-11-03 Weyerhaeuser Company Method and apparatus for treating pulp with oxygen in a multi-stage bleaching sequence
US4295925A (en) * 1979-06-15 1981-10-20 Weyerhaeuser Company Treating pulp with oxygen
US4295927A (en) * 1979-06-15 1981-10-20 Weyerhaeuser Company Method and apparatus for treating pulp with oxygen and storing the treated pulp
IT1209352B (it) * 1980-09-22 1989-07-16 Nardi Franco Processo per la produzione di cellulose chimiche e/o paste per carte, nonche'impianto e relativi componenti per l'attuazione del processo indicato
EP0087412B1 (fr) * 1981-09-04 1987-12-09 Weyerhaeuser Company Procede et dispositif de melange de pulpe avec des gaz
US4431480A (en) * 1981-10-27 1984-02-14 The Black Clawson Company Method and apparatus for controlled addition of alkaline chemicals to an oxygen delignification reaction
US4664832A (en) * 1984-09-28 1987-05-12 State Of South Dakota As Represented By The Department Of Transportation Deicing chemicals and their preparation from polysaccharide sources
US4622101A (en) * 1984-10-01 1986-11-11 International Paper Company Method of oxygen bleaching with ferricyanide lignocellulosic material
US4622100A (en) * 1984-10-01 1986-11-11 International Paper Company Process for the delignification of lignocellulosic material with oxygen, ferricyanide, and a protector
DE3923728A1 (de) * 1989-07-18 1991-01-24 Degussa Verfahren zur stabilisierung der viskositaet von zellstoffen
US5302244A (en) * 1992-02-18 1994-04-12 Domtar Inc. Oxygen delignification of waste cellulosic paper products
US5858021A (en) * 1996-10-31 1999-01-12 Kimberly-Clark Worldwide, Inc. Treatment process for cellulosic fibers
CA2356444C (fr) 1999-02-15 2009-12-15 Kiram Ab Procede de cuisson a l'oxygene de materiau lignocellulosique et de recuperation d'agents chimiques de cuisson
WO2001059204A1 (fr) * 2000-02-14 2001-08-16 Kiram Ab Procede de reduction en pate d'un materiau lignocellulosique au moyen d'oxygene et de recuperation des produits chimiques utilises
KR100981496B1 (ko) * 2002-05-29 2010-09-10 세키스이가가쿠 고교가부시키가이샤 혈액 검사용 유저관, 혈액 검사용 유저관의 마개 및 혈액검사용 용기
SE525773C2 (sv) * 2003-09-24 2005-04-26 Kvaerner Pulping Tech Metod och arrangemang för syrgasdelignifiering av cellulosamassa med pH-reglering i slutfasen
CN1544752A (zh) * 2003-11-28 2004-11-10 清洁制浆催化剂及其应用工艺
BR112013027815B1 (pt) * 2011-04-29 2021-02-23 Geosyntec Consultants, Inc método para redução volumétrica de líquidos orgânicos

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA694720A (en) * 1964-09-22 G. Gillaspie Athey Method of bleaching cellulosic pulps
GB576510A (en) * 1944-03-16 1946-04-08 Henry Dreyfus Improvements in or relating to the production of cellulose
CA553349A (fr) * 1950-10-04 1958-02-18 C. Harris George Procede de reduction en pulpe
BE504423A (fr) * 1951-02-28
US3013933A (en) * 1953-01-28 1961-12-19 Rayonier Inc Method for preparation of wood cellulose
FR72957E (fr) * 1956-11-05
US2926114A (en) * 1957-08-12 1960-02-23 Kimberly Clark Co Manufacture of cellulosic products
NL97796C (fr) * 1958-05-29
GB885605A (en) * 1958-09-11 1961-12-28 Stora Kopparbergs Bergslags Ab Improved method for the production of neutral sulfite pulp
FR1387853A (fr) * 1963-09-19 1965-02-05 Air Liquide Délignification et blanchiment des pâtes cellulosiques chimiques et mi-chimiques
SE314581B (fr) * 1968-10-29 1969-09-08 Mo Och Domsjoe Ab
SE335053B (fr) * 1969-05-13 1971-05-10 Mo Och Domsjoe Ab

Also Published As

Publication number Publication date
FI54343B (fi) 1978-07-31
FR2091515A5 (fr) 1972-01-14
AT304251B (de) 1972-12-27
BR7102728D0 (pt) 1973-06-07
NO134563C (fr) 1976-11-03
DE2123542B2 (de) 1973-10-25
ZA712744B (en) 1972-01-26
SU574164A3 (ru) 1977-09-25
DE2123542A1 (de) 1971-11-25
US3769152A (en) 1973-10-30
SE355614B (fr) 1973-04-30
DE2123542C3 (de) 1974-05-22
JPS5025042B1 (fr) 1975-08-20
CA935957A (en) 1973-10-30
NO134563B (fr) 1976-07-26

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