CA933307A - Lignin-preserving bleaching of cellulose pulp - Google Patents

Lignin-preserving bleaching of cellulose pulp

Info

Publication number
CA933307A
CA933307A CA067857A CA67857A CA933307A CA 933307 A CA933307 A CA 933307A CA 067857 A CA067857 A CA 067857A CA 67857 A CA67857 A CA 67857A CA 933307 A CA933307 A CA 933307A
Authority
CA
Canada
Prior art keywords
lignin
cellulose pulp
preserving bleaching
bleaching
preserving
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
CA067857A
Inventor
F. Gierer Josef
T. Norin Carl
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.)
Svenska Traforskningsinstitutet
Original Assignee
Svenska Traforskningsinstitutet
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 Svenska Traforskningsinstitutet filed Critical Svenska Traforskningsinstitutet
Application granted granted Critical
Publication of CA933307A publication Critical patent/CA933307A/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
    • 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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
CA067857A 1968-11-22 1969-11-19 Lignin-preserving bleaching of cellulose pulp Expired CA933307A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE15966/68A SE324285B (en) 1968-11-22 1968-11-22

Publications (1)

Publication Number Publication Date
CA933307A true CA933307A (en) 1973-09-11

Family

ID=20301509

Family Applications (1)

Application Number Title Priority Date Filing Date
CA067857A Expired CA933307A (en) 1968-11-22 1969-11-19 Lignin-preserving bleaching of cellulose pulp

Country Status (4)

Country Link
US (1) US3694309A (en)
CA (1) CA933307A (en)
FI (1) FI45572C (en)
SE (1) SE324285B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4229202A (en) * 1976-12-20 1980-10-21 Great Circle Associates Wastewater treatment with ultraviolet disinfection and increased capacity

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4029543A (en) * 1971-12-14 1977-06-14 Mo Och Domsjo Mechanically freeing wood fibers in the presence of spent peroxide bleaching liquor
SE413684C (en) * 1974-09-23 1987-05-07 Mo Och Domsjoe Ab PROCEDURE FOR PREPARING CELLULOSAMASSA IN THE REPLACEMENT AREA 65-95%
DE3207157C1 (en) * 1982-02-27 1983-06-09 Degussa Ag, 6000 Frankfurt Process for the production of semi-bleached cellulose
EP0214982A1 (en) * 1984-05-15 1987-03-25 FLINCK, Karl-Evert Method of bleaching fibre pulp for the production of paper and p aperboard
US5274139A (en) * 1993-02-26 1993-12-28 University Of Florida Method for effective reaction between oxygen and organic substance utilizing regenerable hydroperioxide oxidant
US6706143B1 (en) 1996-03-19 2004-03-16 International Paper Company Minimizing chlorinated organics in pulp bleaching processes
US7052578B2 (en) * 2000-01-28 2006-05-30 Martin Marietta Magnesia Specialties, Inc. Process employing magnesium hydroxide in peroxide bleaching of mechanical pulp
US20080110584A1 (en) * 2006-11-15 2008-05-15 Caifang Yin Bleaching process with at least one extraction stage
US11414789B2 (en) * 2016-12-06 2022-08-16 Re:Newcell Ab Cellulose fibers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4229202A (en) * 1976-12-20 1980-10-21 Great Circle Associates Wastewater treatment with ultraviolet disinfection and increased capacity

Also Published As

Publication number Publication date
FI45572C (en) 1972-07-10
FI45572B (en) 1972-04-04
US3694309A (en) 1972-09-26
SE324285B (en) 1970-05-25

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