FI96521B - Förfarande för samtidig malning och blekning av trämassa - Google Patents

Förfarande för samtidig malning och blekning av trämassa

Info

Publication number
FI96521B
FI96521B FI891248A FI891248A FI96521B FI 96521 B FI96521 B FI 96521B FI 891248 A FI891248 A FI 891248A FI 891248 A FI891248 A FI 891248A FI 96521 B FI96521 B FI 96521B
Authority
FI
Finland
Prior art keywords
bleaching
procedure
refiner
wood pulp
pulp
Prior art date
Application number
FI891248A
Other languages
English (en)
Finnish (fi)
Other versions
FI891248A0 (sv
FI891248A (sv
Inventor
Thomas Joachimides
Steven H Levis
Bert Arne Edstroem
Hans Bertil Steve Moldenius
Original Assignee
Morton Int Inc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10633511&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FI96521(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Morton Int Inc filed Critical Morton Int Inc
Publication of FI891248A0 publication Critical patent/FI891248A0/sv
Publication of FI891248A publication Critical patent/FI891248A/sv
Application granted granted Critical
Publication of FI96521B publication Critical patent/FI96521B/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
    • D21C9/1084—Bleaching ; Apparatus therefor with reducing compounds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/14—Disintegrating in mills
    • D21B1/16—Disintegrating in mills in the presence of chemical agents

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
FI891248A 1988-03-16 1989-03-16 Förfarande för samtidig malning och blekning av trämassa FI96521B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8806206A GB2215350B (en) 1988-03-16 1988-03-16 Process for bleaching mechanical wood pulp

Publications (3)

Publication Number Publication Date
FI891248A0 FI891248A0 (sv) 1989-03-16
FI891248A FI891248A (sv) 1989-09-17
FI96521B true FI96521B (sv) 1996-03-29

Family

ID=10633511

Family Applications (1)

Application Number Title Priority Date Filing Date
FI891248A FI96521B (sv) 1988-03-16 1989-03-16 Förfarande för samtidig malning och blekning av trämassa

Country Status (8)

Country Link
US (1) US5129987A (sv)
EP (1) EP0333398B2 (sv)
AT (1) ATE130388T1 (sv)
CA (1) CA1325868C (sv)
DE (1) DE68924793T3 (sv)
FI (1) FI96521B (sv)
GB (1) GB2215350B (sv)
NO (1) NO174560B (sv)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6267841B1 (en) * 1992-09-14 2001-07-31 Steven W. Burton Low energy thermomechanical pulping process using an enzyme treatment between refining zones
JPH073684A (ja) * 1992-12-14 1995-01-06 Hoechst Celanese Corp リファイナー漂白における二酸化硫黄生成の除去
US5560805A (en) * 1993-07-27 1996-10-01 Hoechst Celanese Corporation Enhanced decolorization of waste paper with selected amines
US5580422A (en) * 1993-07-27 1996-12-03 Hoechst Celanese Corporation Brightening color dyed wastepaper with a bleaching agent and a quaternary compound
US5458737A (en) * 1993-07-27 1995-10-17 Hoechst Celanese Corporation Quaternary compounds as brightness enhancers
US5733412A (en) * 1995-09-13 1998-03-31 International Paper Company Decolorizing brown fibers in recycled pulp
US6881299B2 (en) * 2001-05-16 2005-04-19 North American Paper Corporation Refiner bleaching with magnesium oxide and hydrogen peroxide
SE519462C2 (sv) * 2001-06-21 2003-03-04 Holmen Ab Förfarande för framställning av blekt termomekanisk massa (TMP) eller blekt kemitermomekanisk massa (CTMP)
SG130975A1 (en) 2005-09-29 2007-04-26 Tinggi Tech Private Ltd Fabrication of semiconductor devices for light emission
US7967948B2 (en) * 2006-06-02 2011-06-28 International Paper Company Process for non-chlorine oxidative bleaching of mechanical pulp in the presence of optical brightening agents
CN101678557B (zh) * 2007-04-24 2014-07-02 巴斯夫欧洲公司 生产漂白的木材颗粒和浅色至白色木料的方法
US8282773B2 (en) * 2007-12-14 2012-10-09 Andritz Inc. Method and system to enhance fiber development by addition of treatment agent during mechanical pulping
US20100224333A1 (en) * 2009-03-09 2010-09-09 Prasad Duggirala Method and chemical composition to improve efficiency of mechanical pulp
US9932709B2 (en) 2013-03-15 2018-04-03 Ecolab Usa Inc. Processes and compositions for brightness improvement in paper production
SE533509C2 (sv) * 2009-07-07 2010-10-12 Stora Enso Oyj Metod för framställning av mikrofibrillär cellulosa
SE0950534A1 (sv) 2009-07-07 2010-10-12 Stora Enso Oyj Metod för framställning av mikrofibrillär cellulosa
CN103118804B (zh) * 2010-09-17 2016-04-06 泰坦木业有限公司 木材碎块的处理
CN103534409B (zh) 2011-05-13 2017-02-15 斯托拉恩索公司 处理纤维素的方法和根据所述方法处理的纤维素
EP2924166A1 (de) 2014-03-25 2015-09-30 Basf Se Verfahren zur Herstellung von gebleichtem Holzfaserstoff

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB974309A (en) * 1961-03-16 1964-11-04 Southern Bleachery And Print W Compositions containing hydrosulfite and their applications in chemical reductions
SE303088B (sv) * 1963-05-31 1968-08-12 Defibrator Ab
US3467574A (en) † 1966-06-14 1969-09-16 Crown Zellerbach Corp Refiner bleaching of high yield pulps
US3804944A (en) * 1970-10-02 1974-04-16 Virginia Chemicals Inc Sodium dithionite solution stablization
US3985674A (en) * 1974-12-10 1976-10-12 Virginia Chemicals Inc. Stabilized sodium dithionite solutions
GB1588140A (en) * 1977-01-21 1981-04-15 Courtaulds Ltd Method of preparing bleached pulp
SE7711552L (sv) * 1976-10-15 1978-04-16 Courtaulds Ltd Blekt massa
SE422818B (sv) * 1978-03-31 1982-03-29 Modo Chemetrics Ab Forfarande for foredling av allulosamassa genom blekning eller extrahering
SU1002435A1 (ru) * 1981-12-29 1983-03-07 Центральный научно-исследовательский институт бумаги Способ получени термомеханической древесной массы
US4534954A (en) * 1982-08-17 1985-08-13 Virginia Chemicals Inc. Sodium hydrosulfite slurries
DE3406322A1 (de) * 1984-02-22 1985-08-22 Basf Ag, 6700 Ludwigshafen Stabilisierte, wasser enthaltende, alkalisch eingestellte natriumdithionitzubereitungen
FI850374L (fi) * 1985-01-29 1986-07-30 Ahlstroem Oy Foerfarande foer blekning av massa.
SE8501246L (sv) * 1985-03-13 1986-09-14 Eka Ab Sett att tillverka blekt, kemimekanisk och halvkemisk fibermassa med anvendning av enstegsimpregnering

Also Published As

Publication number Publication date
ATE130388T1 (de) 1995-12-15
FI891248A0 (sv) 1989-03-16
EP0333398B2 (en) 2001-04-11
US5129987A (en) 1992-07-14
GB2215350B (en) 1992-05-20
GB2215350A (en) 1989-09-20
EP0333398A2 (en) 1989-09-20
CA1325868C (en) 1994-01-11
DE68924793T2 (de) 1996-05-02
DE68924793D1 (de) 1995-12-21
EP0333398A3 (en) 1991-08-07
NO174560B (no) 1994-02-14
GB8806206D0 (en) 1988-04-13
EP0333398B1 (en) 1995-11-15
NO891117L (no) 1989-09-18
FI891248A (sv) 1989-09-17
NO891117D0 (no) 1989-03-15
DE68924793T3 (de) 2001-07-05

Similar Documents

Publication Publication Date Title
FI96521B (sv) Förfarande för samtidig malning och blekning av trämassa
ES2123600T3 (es) Digestion de madera con acido acetico y adicion de acido formico.
NO179918C (no) Fremgangsmåte og apparat for fremstilling av kraftmasse
ES8100382A1 (es) Procedimiento y dispositivo para la eliminacion de las impurezas contenidas en un pulsador de pasta de papel
SE9302966L (sv) Förfarande för avfärgning av returpapper
ES8704569A1 (es) Procedimiento de disgregacion con sulfito para la preparacion de celulosa a partir de materiales que contienen lignocelulosa con recuperacion de los productos quimicos de disgregacion
NO303945B1 (no) Trefritt, hvitt papirprodukt, fremgangsmÕte for fremstilling, bleket cellulose-fibermasse, samt fremgangsmÕte for resirkulering av avfallscellulosepapirprodukt
KR920021804A (ko) 2차 섬유 회수에 있어서 산소에 의한 점착성 제거 방법
SE7801814L (sv) Forfarande for framstellning av slipmassa
FI824295L (fi) Foerfarande foer framstaellning av halvblekta cellulosor
FR2675518B1 (fr) Procede de preparation de pate a papier a haut rendement et blanchie, a partir de copeaux de bois.
SE8100650L (sv) Sett att bleka lignocellulosamassa
US5298118A (en) Preparation of bleached chemithermomechanical pulp
ES484228A1 (es) Un procedimiento de tratamiento de una materia prima que contiene fibras de celulosa para la produccion de pasta de papel
SE8200756L (sv) Sett att framstella kemimekanisk pappersmassa
AU3421184A (en) Hypochlorite treatment of chemical paper pulps
EP0262988A3 (en) Manufacture of pulp
FI942424A0 (sv) Förbättrat förfarande för blekning av pappersmassa
FR2398839A1 (fr) Procede de fabrication de pates papetieres chimiques
SU1587095A1 (ru) Способ получени беленой целлюлозы дл химической переработки
SU1040010A1 (ru) Способ отбелки целлюлозы
SE9300301L (sv) Sätt för framställning av fibermassa av lignocellulosahaltigt fibermaterial där fibermaterialet först inmatas i och passerar kontinuerligt igenom en förvärmare
SU1180435A1 (ru) Способ делигнификации целлюлозы
SE9303137L (sv) Beredning av kokvätska som innehåller sulfit och användning av vätskan för förimpregnering
ES8304242A1 (es) Procedimiento mejorado para la preparacion de pastas papeleras quimicas.

Legal Events

Date Code Title Description
BB Publication of examined application
GB Transfer or assigment of application

Owner name: MORTON INTERNATIONAL, INC.

FC Application refused

Owner name: MORTON INTERNATIONAL, INC.