CA935957A - Digestion of wood with alkali and oxygen - Google Patents

Digestion of wood with alkali and oxygen

Info

Publication number
CA935957A
CA935957A CA107130A CA107130A CA935957A CA 935957 A CA935957 A CA 935957A CA 107130 A CA107130 A CA 107130A CA 107130 A CA107130 A CA 107130A CA 935957 A CA935957 A CA 935957A
Authority
CA
Canada
Prior art keywords
digestion
wood
alkali
oxygen
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
Application number
CA107130A
Other versions
CA107130S (en
Inventor
O. Samuelson Hans
E. O. Noreus Sture
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.)
Mo och Domsjo AB
Original Assignee
Mo och Domsjo 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 Domsjo AB filed Critical Mo och Domsjo AB
Application granted granted Critical
Publication of CA935957A publication Critical patent/CA935957A/en
Expired 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
    • 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)
CA107130A 1970-05-13 1971-03-08 Digestion of wood with alkali and oxygen Expired CA935957A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
CA935957A true CA935957A (en) 1973-10-30

Family

ID=20269035

Family Applications (1)

Application Number Title Priority Date Filing Date
CA107130A Expired CA935957A (en) 1970-05-13 1971-03-08 Digestion of wood with alkali and oxygen

Country Status (12)

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

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI52877B (en) * 1972-11-16 1977-08-31 Ahlstroem Oy
SE373395B (en) * 1972-12-19 1975-02-03 Mo Och Domsjoe Ab PROCEDURE FOR THE PRODUCTION OF CELLULOSA MASS WITH HIGH LIGHTNESS BY DISTRIBUTING WOOD WITH ACID GAS UNDER PRESSURE IN THE PRESENCE OF A COCK
SE379069B (en) * 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 (en) * 1977-05-18 1985-12-24 本州製紙株式会社 Pulp manufacturing method
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
US4295926A (en) * 1979-06-15 1981-10-20 Weyerhaeuser Company Method and apparatus for treating pulp with oxygen
US4298426A (en) * 1979-06-15 1981-11-03 Weyerhaeuser Company Method and apparatus for treating pulp with oxygen in a multi-stage bleaching sequence
US4303470A (en) * 1979-06-15 1981-12-01 Weyerhaeuser Company Method and apparatus for mixing gases with a wood pulp slurry
IT1209352B (en) * 1980-09-22 1989-07-16 Nardi Franco PROCESS FOR THE PRODUCTION OF CHEMICAL CELLULOSE AND / OR PAPER PASTES, AS WELL AS THE PLANT AND ITS COMPONENTS FOR THE IMPLEMENTATION OF THE INDICATED PROCESS
EP0087412B1 (en) * 1981-09-04 1987-12-09 Weyerhaeuser Company Method and apparatus for mixing pulp with gases
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 (en) * 1989-07-18 1991-01-24 Degussa METHOD FOR STABILIZING THE VISCOSITY OF CELLS
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
ATE277222T1 (en) 1999-02-15 2004-10-15 Kiram Ab METHOD FOR OXYGEN DISSOLUTION OF LIGANOCELLULOSIC MATERIALS AND RECOVERY OF DISSIONING CHEMICALS
WO2001059204A1 (en) * 2000-02-14 2001-08-16 Kiram Ab Process for oxygen pulping of lignocellulosic material and recovery of pulping chemicals
TR201907217T4 (en) * 2002-05-29 2019-06-21 Sekisui Chemical Co Ltd Based blood test tube, spigot for blood test tube and blood test container.
SE525773C2 (en) * 2003-09-24 2005-04-26 Kvaerner Pulping Tech Method and arrangement for oxygen delignification of cellulose pulp with pH control in the final phase
CN1544752A (en) * 2003-11-28 2004-11-10 Clean pulping catalyst and process thereof
DK2701826T3 (en) * 2011-04-29 2019-05-06 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 (en) * 1951-02-28
US3013933A (en) * 1953-01-28 1961-12-19 Rayonier Inc Method for preparation of wood cellulose
FR72957E (en) * 1956-11-05
US2926114A (en) * 1957-08-12 1960-02-23 Kimberly Clark Co Manufacture of cellulosic products
NL97796C (en) * 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 (en) * 1963-09-19 1965-02-05 Air Liquide Delignification and bleaching of chemical and semi-chemical cellulose pulps
SE314581B (en) * 1968-10-29 1969-09-08 Mo Och Domsjoe Ab
SE335053B (en) * 1969-05-13 1971-05-10 Mo Och Domsjoe Ab

Also Published As

Publication number Publication date
SU574164A3 (en) 1977-09-25
SE355614B (en) 1973-04-30
BR7102728D0 (en) 1973-06-07
JPS5025042B1 (en) 1975-08-20
NO134563B (en) 1976-07-26
ZA712744B (en) 1972-01-26
US3769152A (en) 1973-10-30
FI54343C (en) 1978-11-10
DE2123542A1 (en) 1971-11-25
DE2123542C3 (en) 1974-05-22
AT304251B (en) 1972-12-27
FI54343B (en) 1978-07-31
NO134563C (en) 1976-11-03
FR2091515A5 (en) 1972-01-14
DE2123542B2 (en) 1973-10-25

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