SE344774B - - Google Patents

Info

Publication number
SE344774B
SE344774B SE8419/67A SE841967A SE344774B SE 344774 B SE344774 B SE 344774B SE 8419/67 A SE8419/67 A SE 8419/67A SE 841967 A SE841967 A SE 841967A SE 344774 B SE344774 B SE 344774B
Authority
SE
Sweden
Application number
SE8419/67A
Inventor
W West
Original Assignee
Crown Zellerbach Corp
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 Crown Zellerbach Corp filed Critical Crown Zellerbach Corp
Publication of SE344774B publication Critical patent/SE344774B/xx

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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
SE8419/67A 1966-06-14 1967-06-14 SE344774B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US55749866A 1966-06-14 1966-06-14

Publications (1)

Publication Number Publication Date
SE344774B true SE344774B (en) 1972-05-02

Family

ID=24225656

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8419/67A SE344774B (en) 1966-06-14 1967-06-14

Country Status (2)

Country Link
US (1) US3467574A (en)
SE (1) SE344774B (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4030969A (en) * 1972-06-13 1977-06-21 Defibrator Ab Method of dispersing a bleaching agent into a stream of fibrous cellulosic pulp material in a throttling nozzle
US3830690A (en) * 1972-08-03 1974-08-20 Virginia Chemicals Inc Groundwood pulp bleaching with sodium hydrosulfite in the presence of sodium salts of glucono-citrate complexes of polyaminoversenic acid
US3874993A (en) * 1972-10-06 1975-04-01 Virginia Chemicals Inc Groundwood pulp bleaching with sodium hydrosulfite in the presence of benzene polycarboxylates
GB1590704A (en) * 1976-11-23 1981-06-10 Defibrator Ab Method end device for the continuous production of pulp from fibrous lignocellulosic materials
SE416481B (en) * 1977-05-02 1981-01-05 Mo Och Domsjoe Ab METHOD AND DEVICE FOR TREATMENT OF WOOD TIP FOR REMOVAL OF HEAVY METALS AND RESIN
SE409476B (en) * 1978-02-17 1979-08-20 Sca Development Ab KIT FOR REFINING LIGNOCELLULOSE-MATERIAL
US4404061A (en) * 1981-08-17 1983-09-13 International Paper Company Bleaching of lignocellulosic materials with monopersulfuric acid or its salts
US4475984A (en) * 1981-08-17 1984-10-09 International Paper Co. Process for pretreating wood chips with monoperoxy sulfuric acid or its salts prior to alkaline pulping
ZA837927B (en) * 1983-05-23 1985-01-30 Process Evaluation Devel Thermomechanical digestion process using bleachants
SE456430B (en) * 1985-11-06 1988-10-03 Sunds Defibrator SET FOR MAKING MECHANICAL MASS
DE3610940A1 (en) * 1986-03-04 1987-09-10 Escher Wyss Gmbh HIGH TEMPERATURE HIGH CONSISTENCY FAST WHITE
US4863564A (en) * 1987-12-23 1989-09-05 Virginia Chemicals Inc. Method of bleaching high yield pulp by using dithionite ion and excluding oxygen
GB2215350B (en) * 1988-03-16 1992-05-20 Thiokol Morton Inc Process for bleaching mechanical wood pulp
SE461919B (en) * 1988-08-30 1990-04-09 Cellwood Machinery Ab SET FOR TREATMENT OF TREASURY FIBER, SEPARATELY CONTAINING RECOVERY PAPER, AND DISPERSE BEFORE IMPLEMENTATION OF THE PROCEDURE
DE19704183A1 (en) * 1997-02-05 1998-08-06 Voith Sulzer Stoffaufbereitung Bleaching fibres from recycled paper
SE513790C2 (en) * 1999-03-08 2000-11-06 Mo Och Domsjoe Ab Bleaching of mechanical pulp with reducing bleach
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 (en) * 2007-04-24 2014-07-02 巴斯夫欧洲公司 Method for the production of bleached wood particles and wood materials ranging from light-toned to white

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2071307A (en) * 1936-08-11 1937-02-16 Great Western Electro Chemical Co Bleaching
US2963395A (en) * 1958-03-31 1960-12-06 Crown Zellerbach Corp Process of bleaching lignocellulosic pulps
US3023140A (en) * 1958-11-24 1962-02-27 Bauer Bros Co Pulp bleaching
SE303088B (en) * 1963-05-31 1968-08-12 Defibrator Ab

Also Published As

Publication number Publication date
US3467574A (en) 1969-09-16

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