CA1026908A - Delignification and bleaching of wood pulp with oxygen in the presence of triethanolamine - Google Patents

Delignification and bleaching of wood pulp with oxygen in the presence of triethanolamine

Info

Publication number
CA1026908A
CA1026908A CA184,952A CA184952A CA1026908A CA 1026908 A CA1026908 A CA 1026908A CA 184952 A CA184952 A CA 184952A CA 1026908 A CA1026908 A CA 1026908A
Authority
CA
Canada
Prior art keywords
delignification
bleaching
triethanolamine
oxygen
wood pulp
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
CA184,952A
Other languages
English (en)
French (fr)
Other versions
CA184952S (en
Inventor
Eero V. Sjostrom
Olli T. Valttila
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.)
Ahlstrom Corp
Original Assignee
Ahlstrom 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 Ahlstrom Corp filed Critical Ahlstrom Corp
Application granted granted Critical
Publication of CA1026908A publication Critical patent/CA1026908A/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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
CA184,952A 1972-11-16 1973-11-02 Delignification and bleaching of wood pulp with oxygen in the presence of triethanolamine Expired CA1026908A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI3233/72A FI52877B (it) 1972-11-16 1972-11-16

Publications (1)

Publication Number Publication Date
CA1026908A true CA1026908A (en) 1978-02-28

Family

ID=8508173

Family Applications (1)

Application Number Title Priority Date Filing Date
CA184,952A Expired CA1026908A (en) 1972-11-16 1973-11-02 Delignification and bleaching of wood pulp with oxygen in the presence of triethanolamine

Country Status (8)

Country Link
US (1) US3951732A (it)
JP (1) JPS5112723B2 (it)
CA (1) CA1026908A (it)
DE (1) DE2355741B2 (it)
ES (1) ES420507A1 (it)
FI (1) FI52877B (it)
FR (1) FR2207215B1 (it)
NO (1) NO137015C (it)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1031110A (en) * 1974-12-19 1978-05-16 Macmillan Bloedel Limited High yield pulping process
US4091749A (en) * 1975-01-02 1978-05-30 Macmillan Bloedel Limited Alkaline pulping of lignocellulosic material with amine pretreatment
FI51833C (it) * 1975-03-18 1978-01-24 Ahlstroem Oy
US4002526A (en) * 1975-10-10 1977-01-11 International Paper Company Oxygen-alkali delignification of low consistency wood pulp
CA1097463A (en) * 1976-12-13 1981-03-17 Naphtali N. Vanderhoek Pulping processes
SE434284B (sv) * 1980-05-07 1984-07-16 Mo Och Domsjoe Ab Forfarande vid syrgasdelignifiering av kemiskt uppsluten cellulosamassa varvid aromatiska diaminer tillfores
US4622100A (en) * 1984-10-01 1986-11-11 International Paper Company Process for the delignification of lignocellulosic material with oxygen, ferricyanide, and a protector
US5641385A (en) * 1995-01-17 1997-06-24 The Dow Chemical Company Use of ethyleneamine for washing pulp containing lignin
AUPN352095A0 (en) * 1995-06-13 1995-07-06 Ici Australia Operations Proprietary Limited Peroxide bleaching of pulp
JP3698178B2 (ja) * 1995-09-22 2005-09-21 三菱瓦斯化学株式会社 製紙用化学パルプの漂白方法
US11267838B2 (en) * 2017-04-17 2022-03-08 Board Of Trustees Of Michigan State University Methods for lignin depolymerization using thiols

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2192202A (en) * 1936-10-23 1940-03-05 Floyd C Peterson Pulping process
US2668110A (en) * 1948-06-18 1954-02-02 Spencer Method for fiber liberation in cotton stalks and the pulp
FR1387853A (fr) * 1963-09-19 1965-02-05 Air Liquide Délignification et blanchiment des pâtes cellulosiques chimiques et mi-chimiques
FR1404605A (fr) * 1964-05-22 1965-07-02 Air Liquide Perfectionnement à la délignification des pâtes chimiques de cellulose
SE355614B (it) * 1970-05-13 1973-04-30 Mo Och Domsjoe Ab

Also Published As

Publication number Publication date
DE2355741B2 (de) 1975-11-27
FI52877B (it) 1977-08-31
NO137015C (no) 1977-12-14
ES420507A1 (es) 1976-08-01
FR2207215B1 (it) 1976-05-07
DE2355741A1 (de) 1974-06-06
JPS49133601A (it) 1974-12-23
US3951732A (en) 1976-04-20
JPS5112723B2 (it) 1976-04-22
NO137015B (no) 1977-09-05
FR2207215A1 (it) 1974-06-14

Similar Documents

Publication Publication Date Title
CA1007807A (en) Delignification and bleaching of wood pulp with oxygen
CA1020305A (en) Delignification and bleaching of wood pulp with oxygen
CA929713A (en) Decolorization of kraft wood pulp bleach effluents
CA1026908A (en) Delignification and bleaching of wood pulp with oxygen in the presence of triethanolamine
AU4714472A (en) Improvements in the manufacture of cellulose pulp for paper and paper board
ZA697269B (en) Improvements in or relating to the delignification and bleaching of cellulose pulp with oxygen gas
AU475331B2 (en) Paper, pulp and pulping process
CA958504A (en) Process for pulping and bleaching vegetable material
CA929711A (en) Treating cellulosic materials with alkali and oxygen
CA937357A (en) Single stage delignification and bleaching process
CA885903A (en) Oxygen bleaching and delignification of alkaline pulp
AU489486B2 (en) Delignification and bleaching of woodpulp with oxygen
AU448233B2 (en) Improvements in or relating tothe delignification and bleaching of cellulose pulps with oxygen gas
CA910560A (en) Utilizing zero fibres and wood incrusting matter in white water
CA975111A (en) Bleaching cellulosic pulp
AU5778669A (en) Improvements in or relating tothe delignification and bleaching of cellulose pulps with oxygen gas
AU451395B2 (en) Oxygen pulping
CA811632A (en) Bleaching of wood pulps with thiourea dioxide
CA832910A (en) Simultaneous and rapid drying and bleaching of mechanical wood pulps
CA982378A (en) Method of pulping wood with oxygen
AU434852B2 (en) Improvements in or relating to oxygen bleaching and delignification of alkaline pulp
CA898460A (en) Delignification and bleaching of cellulose pulps with oxygen gas
AU2137970A (en) Improvements in and relating tothe treatment of papermaking pulp
AU442870B2 (en) Improvements in or relating tothe delignification and bleaching of cellulose pulp
AU453497B2 (en) Lignocellulosic pulping process and products