AT304251B - Verfahren zum Aufschließen von Holz bzw. Holzschnitzeln - Google Patents

Verfahren zum Aufschließen von Holz bzw. Holzschnitzeln

Info

Publication number
AT304251B
AT304251B AT418271A AT418271A AT304251B AT 304251 B AT304251 B AT 304251B AT 418271 A AT418271 A AT 418271A AT 418271 A AT418271 A AT 418271A AT 304251 B AT304251 B AT 304251B
Authority
AT
Austria
Prior art keywords
wood
opening
chips
wood chips
Prior art date
Application number
AT418271A
Other languages
English (en)
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
Application granted granted Critical
Publication of AT304251B publication Critical patent/AT304251B/de

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)
AT418271A 1970-05-13 1971-05-13 Verfahren zum Aufschließen von Holz bzw. Holzschnitzeln AT304251B (de)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
AT304251B true AT304251B (de) 1972-12-27

Family

ID=20269035

Family Applications (1)

Application Number Title Priority Date Filing Date
AT418271A AT304251B (de) 1970-05-13 1971-05-13 Verfahren zum Aufschließen von Holz bzw. Holzschnitzeln

Country Status (12)

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

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI52877B (de) * 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 (de) * 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 (en) * 1976-09-13 1980-06-17 Robert C. Eckert Manganic ion bleaching process
JPS6059357B2 (ja) * 1977-05-18 1985-12-24 本州製紙株式会社 パルプの製造方法
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
US4303470A (en) * 1979-06-15 1981-12-01 Weyerhaeuser Company Method and apparatus for mixing gases with a wood pulp slurry
US4295927A (en) * 1979-06-15 1981-10-20 Weyerhaeuser Company Method and apparatus for treating pulp with oxygen and storing the treated pulp
US4295926A (en) * 1979-06-15 1981-10-20 Weyerhaeuser Company Method and apparatus for treating pulp with oxygen
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
WO1983000816A1 (en) * 1981-09-04 1983-03-17 Weyerhaeuser Co Method and apparatus for mixing pulp with oxygen
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
US4622100A (en) * 1984-10-01 1986-11-11 International Paper Company Process for the delignification of lignocellulosic material with oxygen, ferricyanide, and a protector
US4622101A (en) * 1984-10-01 1986-11-11 International Paper Company Method of oxygen bleaching with ferricyanide lignocellulosic material
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
EP1161592B1 (de) 1999-02-15 2004-09-22 Kiram AB Verfahren zum sauerstoff-aufschluss von liganocellulosischen materialien und rückgewinnung von aufschlusschemikalien
WO2001059204A1 (en) * 2000-02-14 2001-08-16 Kiram Ab Process for oxygen pulping of lignocellulosic material and recovery of pulping chemicals
EP1508804B1 (de) * 2002-05-29 2019-03-06 Sekisui Chemical Co., Ltd. Röhrchen mit boden zur blutuntersuchung, stopfen für das röhrchen mit boden zur blutuntersuchung und behälter zur blutuntersuchung
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
CA2832080C (en) * 2011-04-29 2020-04-28 Geosyntec Consultants, Inc. Method for volumetric reduction of organic liquids

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 (en) * 1950-10-04 1958-02-18 C. Harris George Pulping process
BE504423A (de) * 1951-02-28
US3013933A (en) * 1953-01-28 1961-12-19 Rayonier Inc Method for preparation of wood cellulose
FR72957E (de) * 1956-11-05
US2926114A (en) * 1957-08-12 1960-02-23 Kimberly Clark Co Manufacture of cellulosic products
NL97796C (de) * 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 (de) * 1968-10-29 1969-09-08 Mo Och Domsjoe Ab
SE335053B (de) * 1969-05-13 1971-05-10 Mo Och Domsjoe Ab

Also Published As

Publication number Publication date
FI54343C (fi) 1978-11-10
FI54343B (fi) 1978-07-31
DE2123542B2 (de) 1973-10-25
DE2123542A1 (de) 1971-11-25
BR7102728D0 (pt) 1973-06-07
FR2091515A5 (de) 1972-01-14
DE2123542C3 (de) 1974-05-22
SU574164A3 (ru) 1977-09-25
NO134563B (de) 1976-07-26
ZA712744B (en) 1972-01-26
JPS5025042B1 (de) 1975-08-20
CA935957A (en) 1973-10-30
US3769152A (en) 1973-10-30
NO134563C (de) 1976-11-03
SE355614B (de) 1973-04-30

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee