SE8003407L - Forfarande vid syrgasblekning av cellulosamassa - Google Patents

Forfarande vid syrgasblekning av cellulosamassa

Info

Publication number
SE8003407L
SE8003407L SE8003407A SE8003407A SE8003407L SE 8003407 L SE8003407 L SE 8003407L SE 8003407 A SE8003407 A SE 8003407A SE 8003407 A SE8003407 A SE 8003407A SE 8003407 L SE8003407 L SE 8003407L
Authority
SE
Sweden
Prior art keywords
procedures
oxygen bleaching
cellulose mass
bleaching
pulp
Prior art date
Application number
SE8003407A
Other languages
Unknown language ( )
English (en)
Other versions
SE434284B (sv
Inventor
H O Samuelson
K E Abrahamsson
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
Priority to SE8003407A priority Critical patent/SE434284B/sv
Priority to NZ196664A priority patent/NZ196664A/xx
Priority to AU69029/81A priority patent/AU539178B2/en
Priority to JP5779281A priority patent/JPS56169889A/ja
Priority to FI811195A priority patent/FI69134C/fi
Priority to US06/260,436 priority patent/US4372811A/en
Priority to NO811525A priority patent/NO156250C/no
Priority to FR8108965A priority patent/FR2482146A1/fr
Priority to CA000377106A priority patent/CA1167206A/en
Publication of SE8003407L publication Critical patent/SE8003407L/sv
Publication of SE434284B publication Critical patent/SE434284B/sv

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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
    • 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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1068—Bleaching ; Apparatus therefor with O2

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Cosmetics (AREA)
SE8003407A 1980-05-07 1980-05-07 Forfarande vid syrgasdelignifiering av kemiskt uppsluten cellulosamassa varvid aromatiska diaminer tillfores SE434284B (sv)

Priority Applications (9)

Application Number Priority Date Filing Date Title
SE8003407A SE434284B (sv) 1980-05-07 1980-05-07 Forfarande vid syrgasdelignifiering av kemiskt uppsluten cellulosamassa varvid aromatiska diaminer tillfores
NZ196664A NZ196664A (en) 1980-05-07 1981-03-30 Process for oxygen bleaching cellulose pulp
AU69029/81A AU539178B2 (en) 1980-05-07 1981-04-02 Oxygen bleaching chemically digested cellulose pulp
JP5779281A JPS56169889A (en) 1980-05-07 1981-04-15 Oxygen bleaching method of cellulose pulp
FI811195A FI69134C (fi) 1980-05-07 1981-04-16 Foerfarande vid syrgasblekning av cellulosamassa
US06/260,436 US4372811A (en) 1980-05-07 1981-05-04 Alkaline oxygen delignification and bleaching of cellulose pulp in the presence of aromatic diamines
NO811525A NO156250C (no) 1980-05-07 1981-05-06 Fremgangsmaate ved oxygengassbleking av cellulosemasse.
FR8108965A FR2482146A1 (fr) 1980-05-07 1981-05-06 Procede de blanchiment a l'oxygene de la pate cellulosique preparee par voie chimique
CA000377106A CA1167206A (en) 1980-05-07 1981-05-07 Alkaline oxygen delignification and bleaching of cellulose pulp in the presence of aromatic diamines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8003407A SE434284B (sv) 1980-05-07 1980-05-07 Forfarande vid syrgasdelignifiering av kemiskt uppsluten cellulosamassa varvid aromatiska diaminer tillfores

Publications (2)

Publication Number Publication Date
SE8003407L true SE8003407L (sv) 1981-11-08
SE434284B SE434284B (sv) 1984-07-16

Family

ID=20340912

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8003407A SE434284B (sv) 1980-05-07 1980-05-07 Forfarande vid syrgasdelignifiering av kemiskt uppsluten cellulosamassa varvid aromatiska diaminer tillfores

Country Status (9)

Country Link
US (1) US4372811A (sv)
JP (1) JPS56169889A (sv)
AU (1) AU539178B2 (sv)
CA (1) CA1167206A (sv)
FI (1) FI69134C (sv)
FR (1) FR2482146A1 (sv)
NO (1) NO156250C (sv)
NZ (1) NZ196664A (sv)
SE (1) SE434284B (sv)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3923728A1 (de) * 1989-07-18 1991-01-24 Degussa Verfahren zur stabilisierung der viskositaet von zellstoffen
US6331354B1 (en) 1996-08-23 2001-12-18 Weyerhaeuser Company Alkaline pulp having low average degree of polymerization values and method of producing the same
US6605350B1 (en) * 1996-08-23 2003-08-12 Weyerhaeuser Company Sawdust alkaline pulp having low average degree of polymerization values and method of producing the same
DK0881326T3 (da) * 1997-05-30 2002-02-11 Schoeller & Hoesch Papierfab Fremgangsmåde til fremstilling af blegede specialcellulosemasser
US6797113B2 (en) * 1999-02-24 2004-09-28 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell pulps method
US6686040B2 (en) 1999-02-24 2004-02-03 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell products
US6685856B2 (en) 1999-02-24 2004-02-03 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell products method
US6686039B2 (en) 1999-02-24 2004-02-03 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell pulps
DE10163303B4 (de) * 2001-12-21 2004-04-01 Rhodia Acetow Gmbh Verfahren zur Verbesserung der Farbzahl von Celluloseestern
WO2011098599A1 (en) 2010-02-12 2011-08-18 Dequest Ag Method for pulp bleaching
CN102381981B (zh) * 2011-09-09 2013-12-04 南京理工大学 一种汽油用抗氧剂的合成方法
CN111344455B (zh) 2017-09-11 2022-10-28 索理思科技公司 用于增强化学木浆的氧脱木质素的方法
US11033867B2 (en) 2017-09-27 2021-06-15 Sustainable Fiber Technologies, LLC Aqueous lignin and hemicellulose dispersion
US11066588B2 (en) 2017-11-21 2021-07-20 Sustainable Fiber Technologies, LLC Deicing composition comprising lignocellulosic byproducts
US11091697B2 (en) 2017-11-29 2021-08-17 Sustainable Fiber Technologies, LLC Dust suppressant and soil stabilization composition comprising lignocellulosic byproducts
US11572474B2 (en) 2020-05-22 2023-02-07 Sustainable Fiber Technologies, LLC Compositions comprising lignocellulosic byproducts for tire ballasts and associated methods

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2478379A (en) * 1948-07-30 1949-08-09 Hercules Powder Co Ltd Cellulose bleaching
SE360128C (sv) * 1970-08-25 1983-10-31 Mo Och Domsjoe Ab Sett att bleka cellulosamassa med en syreinnehallande gas i nervaro av alkali
FI52877B (sv) * 1972-11-16 1977-08-31 Ahlstroem Oy
US4089737A (en) * 1974-02-18 1978-05-16 Toyo Pulp Company, Ltd. Delignification of cellulosic material with an alkaline aqueous medium containing oxygen dissolved therein
FI58360C (fi) * 1974-06-14 1981-01-12 Mo Och Domsjoe Ab Foerfarande foer delignifiering av lignocellulosahaltigt material med hjaelp av syreinnehaollande gas och apparatur foer utfoerande av detta foerfarande
US4091749A (en) * 1975-01-02 1978-05-30 Macmillan Bloedel Limited Alkaline pulping of lignocellulosic material with amine pretreatment
JPS5228884A (en) * 1975-08-29 1977-03-04 Hitachi Ltd Semiconductor laser device
ZA773044B (en) * 1976-06-02 1978-04-26 Australian Paper Manufacturers Improvements in pulping processes
SE7904430L (sv) * 1978-05-26 1979-11-27 Monsanto Europe Sa Massablekning
US4248663A (en) * 1978-07-05 1981-02-03 Pulp And Paper Research Institute Of Canada Pulping with an alkaline liquor containing a cyclic keto compound and an amino compound

Also Published As

Publication number Publication date
AU539178B2 (en) 1984-09-13
AU6902981A (en) 1981-11-12
NZ196664A (en) 1983-06-14
NO156250B (no) 1987-05-11
FR2482146A1 (fr) 1981-11-13
FI69134B (fi) 1985-08-30
FR2482146B1 (sv) 1983-12-02
NO156250C (no) 1987-08-19
FI69134C (fi) 1985-12-10
JPS56169889A (en) 1981-12-26
CA1167206A (en) 1984-05-15
SE434284B (sv) 1984-07-16
FI811195L (fi) 1981-11-08
US4372811A (en) 1983-02-08
NO811525L (no) 1981-11-09

Similar Documents

Publication Publication Date Title
SE8003407L (sv) Forfarande vid syrgasblekning av cellulosamassa
ES8102237A1 (es) Procedimiento para la deslignificacion y el blanqueo de pas-tas celulosicas quimicas y semi-quimicas
SE7902901L (sv) Sett for blekning av oxygendelignifierad, cellulosahaltig massa med ozon
NO172858C (no) Fremgangsmaate for behandling av papirmasse med et enzympreparat
ATE48290T1 (de) Verfahren zur delignifizierung und bleiche von zellstoffen.
SE9400277D0 (sv) oxygen/ozon/perättiksyra-delignifiering och -blekning av cellulosamassor
SE8101772L (sv) Forbettring av ljusheten hos ozonblekta pappersmassor
KR840002934A (ko) 화학펄프류의 표백처리법
SE8105552L (sv) Forfarande vid delignifierande blekning av cellulosamassa
NO864983D0 (no) Fremgangsmaate for bleking og delignifisering av produkter inneholdende kjemisk masse.
NO881404L (no) Bleking av mekanisk tremasse.
FI906076A0 (sv) Förfarande för blekning av kemiska cellulosamassor för framställning av blekta absorberande massor
SE8403372D0 (sv) Fremgangsmate til delignifisering av kjemisk masse
SE8003911L (sv) Forfarande for syrgasblekning av cellulosamassa
FI843975L (fi) Hypokloritbehandling av kemiska pappersmassor.
FR2158873A5 (en) Bleaching of wood cellulose - using nitrogen oxides
SE8604852L (sv) Delignifiering och blekning av en cellulosamassa med en alkali-syre-hypokloritextraktion
FI930803A (fi) Process foer behandling av lignocellulosamassa samt en apparat foer att genomfoera processen
SE8800713L (sv) Saett vid framstaellning av cellulosamassa
SE8700313L (sv) Forfarande for blekning av mekaniska massor
SE8008336L (sv) Forfarande for delignifiering/blekning av cellulosamassa
SE8008874L (sv) Forfarande vid blekning av cellulosamassa
SE8107858L (sv) Forfarande vid delignifierande blekning av cellulosamassa
SE9503694D0 (sv) Blekning av massa
DE59704964D1 (de) Verfahren zur Herstellung von gebleichten Spezialzellstoffen

Legal Events

Date Code Title Description
NUG Patent has lapsed

Ref document number: 8003407-7

Effective date: 19900518

Format of ref document f/p: F