SE8604852D0 - Delignification and bleaching of a cellulose pulp with an alkali-oxygen-hypochlorite extraction - Google Patents

Delignification and bleaching of a cellulose pulp with an alkali-oxygen-hypochlorite extraction

Info

Publication number
SE8604852D0
SE8604852D0 SE8604852A SE8604852A SE8604852D0 SE 8604852 D0 SE8604852 D0 SE 8604852D0 SE 8604852 A SE8604852 A SE 8604852A SE 8604852 A SE8604852 A SE 8604852A SE 8604852 D0 SE8604852 D0 SE 8604852D0
Authority
SE
Sweden
Prior art keywords
bleaching
oxygen
pulp
hypochlorite
delignification
Prior art date
Application number
SE8604852A
Other languages
English (en)
Other versions
SE460423B (sv
SE8604852L (sv
Inventor
D F Dwiggins
Original Assignee
Westvaco 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 Westvaco Corp filed Critical Westvaco Corp
Publication of SE8604852D0 publication Critical patent/SE8604852D0/sv
Publication of SE8604852L publication Critical patent/SE8604852L/sv
Publication of SE460423B publication Critical patent/SE460423B/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
SE8604852A 1985-05-24 1986-11-13 Blekning och delignifiering av cellulosamassa med en alkali-syre-hypokloritextraktion SE460423B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/737,463 US4657633A (en) 1985-05-24 1985-05-24 Delignification and bleaching of a cellulose pulp with an alkalioxygen-hypochlorite single stage sequential extraction

Publications (3)

Publication Number Publication Date
SE8604852D0 true SE8604852D0 (sv) 1986-11-13
SE8604852L SE8604852L (sv) 1988-05-14
SE460423B SE460423B (sv) 1989-10-09

Family

ID=24964029

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8604852A SE460423B (sv) 1985-05-24 1986-11-13 Blekning och delignifiering av cellulosamassa med en alkali-syre-hypokloritextraktion

Country Status (2)

Country Link
US (1) US4657633A (sv)
SE (1) SE460423B (sv)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0303962A3 (en) * 1987-08-17 1991-06-26 Air Products And Chemicals, Inc. Oxygen alkali extraction process for producing bleached pulp
SE466062B (sv) * 1990-04-30 1991-12-09 Sunds Defibrator Ind Ab Blekning av kemisk massa
US6174409B1 (en) 1997-09-19 2001-01-16 American Air Liquide Inc. Method to improve final bleached pulp strength properties by adjusting the CI02:03 ration within a single (D/Z) stage of the bleaching process
US8268122B2 (en) * 2005-12-02 2012-09-18 Akzo Nobel N.V. Process of producing high-yield pulp
US9057156B2 (en) 2010-12-22 2015-06-16 Skzo Nobel Chemicals International B.V. Process for improving chlorine dioxide bleaching of pulp
JP6438077B1 (ja) * 2017-06-28 2018-12-12 ユニ・チャーム株式会社 糖化用パルプ繊維を製造する方法、及び糖化用パルプ繊維水溶液

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5346844B2 (sv) * 1972-04-15 1978-12-16
US4081317A (en) * 1973-12-18 1978-03-28 Hooker Chemicals & Plastics Corporation Process for the reduction of effluent color from a cellulosic pulp bleaching sequence
FR2255418B1 (sv) * 1973-12-21 1976-05-07 Europeen Cellulose
FR2534680A1 (fr) * 1982-10-14 1984-04-20 Europ Propulsion Systeme de mise a feu d'une charge propulsive par transmission pyrotechnique

Also Published As

Publication number Publication date
US4657633A (en) 1987-04-14
SE460423B (sv) 1989-10-09
SE8604852L (sv) 1988-05-14

Similar Documents

Publication Publication Date Title
SE8504236D0 (sv) Forbettrad oxidativ extraktion
SE7902901L (sv) Sett for blekning av oxygendelignifierad, cellulosahaltig massa med ozon
SE7801868L (sv) Blekning av lignocellulosamaterial med peroxidhaltiga blekmedel
SE9001187D0 (sv) Oxygen bleaching with between stage washing
DE3061114D1 (en) Process for bleaching cellulose pulps by means of organic peracids
SE8100373L (sv) Forfarande vid ozonblekning av pappersmassa
FR2457339B1 (sv)
SE9200107D0 (sv) Environmentally improved process for bleaching lignocellulosic materials
SE9700143D0 (sv) Kraftkokning i två steg
ATE48290T1 (de) Verfahren zur delignifizierung und bleiche von zellstoffen.
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
SE8604852D0 (sv) Delignification and bleaching of a cellulose pulp with an alkali-oxygen-hypochlorite extraction
SE9102589D0 (sv) Chlorine-free process for bleaching pulp
SE8003911L (sv) Forfarande for syrgasblekning av cellulosamassa
EP0442806A1 (en) A process for producing pulp from a lignocellulosic-containing material
SE0004438D0 (sv) Enviormentally-friendly fiberline for producing bleached chemical pulp
FI952551A0 (sv) Förfarande för blekning av lignocellulosahaltig massa
FR2398839A1 (fr) Procede de fabrication de pates papetieres chimiques
NO864319D0 (no) Fremgangsmaate for bleking av kjemiske papirmasser.
SE8107858L (sv) Forfarande vid delignifierande blekning av cellulosamassa
RU93031029A (ru) Способ получения беленой целлюлозы
FR2454478A1 (fr) Procede ameliore de blanchiment de matieres fibreuses cellulosiques
DE59105105D1 (de) Verfahren zur chlorarmen Bleiche und Delignifizierung von Zellstoff.

Legal Events

Date Code Title Description
NUG Patent has lapsed

Ref document number: 8604852-7

Effective date: 19940610

Format of ref document f/p: F