SE9203801D0 - MASS PREPARATION PROCEDURE WITH ALKALITE ADDITION FOR THICK MASS OXYGEN ELIGIBILITY - Google Patents

MASS PREPARATION PROCEDURE WITH ALKALITE ADDITION FOR THICK MASS OXYGEN ELIGIBILITY

Info

Publication number
SE9203801D0
SE9203801D0 SE9203801A SE9203801A SE9203801D0 SE 9203801 D0 SE9203801 D0 SE 9203801D0 SE 9203801 A SE9203801 A SE 9203801A SE 9203801 A SE9203801 A SE 9203801A SE 9203801 D0 SE9203801 D0 SE 9203801D0
Authority
SE
Sweden
Prior art keywords
pulp
mass
oxygen
alkalite
eligibility
Prior art date
Application number
SE9203801A
Other languages
Swedish (sv)
Other versions
SE9203801L (en
Inventor
Bruce F Griggs
Original Assignee
Union Camp Patent Holding
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
Priority to EP19910909663 priority Critical patent/EP0539381A4/en
Priority to PCT/US1991/002673 priority patent/WO1992018689A1/en
Priority to AU78754/91A priority patent/AU647485B2/en
Priority to JP3509138A priority patent/JPH06501290A/en
Priority to CA002069447A priority patent/CA2069447C/en
Priority to CN91103486A priority patent/CN1066308A/en
Application filed by Union Camp Patent Holding filed Critical Union Camp Patent Holding
Priority to SE9203801A priority patent/SE9203801L/en
Publication of SE9203801D0 publication Critical patent/SE9203801D0/en
Publication of SE9203801L publication Critical patent/SE9203801L/en

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
    • D21C9/001—Modification of pulp properties
    • D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
    • D21C9/004—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives inorganic compounds
    • 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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Paper (AREA)

Abstract

Unbleached pulp (8) is combined with an aqueous alkaline solution (10, 14A) while in a state of low consistency to distribute a first amount of alkaline material substantially uniformly throughout the pulp. The consistency of the pulp is then increased to above about 18 % (12) and the high consistency alkali containing pulp is then treated with oxygen (21) to effect delignification (20). The total amount of alkaline material applied to the pulp is between 0.8 and 7 % by weight of oven dry pulp. High strength, low lignin pulps are subsequently formed which may be further bleached to high brightness with reduced amounts of chemicals.
SE9203801A 1991-04-18 1992-12-17 MASS PREPARATION PROCEDURE WITH ALKALITE ADDITION FOR THICK MASS OXYGEN ELIGIBILITY SE9203801L (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP19910909663 EP0539381A4 (en) 1991-04-18 1991-04-18 Pulp alkali addition process for high consistency oxygen delignification.
PCT/US1991/002673 WO1992018689A1 (en) 1991-04-18 1991-04-18 Pulp alkali addition process for high consistency oxygen delignification
AU78754/91A AU647485B2 (en) 1991-04-18 1991-04-18 Pulp alkali addition process for high consistency oxygen delignification
JP3509138A JPH06501290A (en) 1991-04-18 1991-04-18 Pulp alkali addition method for high consistency oxygen delignification
CA002069447A CA2069447C (en) 1991-04-18 1991-04-18 Pulp alkali addition process for high consistency oxygen delignification
CN91103486A CN1066308A (en) 1991-04-18 1991-04-30 The pulp alkali addition method that is used for the high concentration oxygen delignification
SE9203801A SE9203801L (en) 1991-04-18 1992-12-17 MASS PREPARATION PROCEDURE WITH ALKALITE ADDITION FOR THICK MASS OXYGEN ELIGIBILITY

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
PCT/US1991/002673 WO1992018689A1 (en) 1991-04-18 1991-04-18 Pulp alkali addition process for high consistency oxygen delignification
CA002069447A CA2069447C (en) 1991-04-18 1991-04-18 Pulp alkali addition process for high consistency oxygen delignification
CN91103486A CN1066308A (en) 1991-04-18 1991-04-30 The pulp alkali addition method that is used for the high concentration oxygen delignification
SE9203801A SE9203801L (en) 1991-04-18 1992-12-17 MASS PREPARATION PROCEDURE WITH ALKALITE ADDITION FOR THICK MASS OXYGEN ELIGIBILITY

Publications (2)

Publication Number Publication Date
SE9203801D0 true SE9203801D0 (en) 1992-12-17
SE9203801L SE9203801L (en) 1993-02-10

Family

ID=27426917

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9203801A SE9203801L (en) 1991-04-18 1992-12-17 MASS PREPARATION PROCEDURE WITH ALKALITE ADDITION FOR THICK MASS OXYGEN ELIGIBILITY

Country Status (7)

Country Link
EP (1) EP0539381A4 (en)
JP (1) JPH06501290A (en)
CN (1) CN1066308A (en)
AU (1) AU647485B2 (en)
CA (1) CA2069447C (en)
SE (1) SE9203801L (en)
WO (1) WO1992018689A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0530881A1 (en) * 1991-08-14 1993-03-10 Union Camp Patent Holding, Inc. Use of wash press for pulp alkali addition process
CN100395403C (en) * 2007-08-03 2008-06-18 山东泉林纸业有限责任公司 Oxygen delignify treating method for grass group unbleached chemical pulp
CA3203347A1 (en) * 2018-05-28 2019-12-05 Pierson Capital Environmental (Beijing) Limited Efficient methods and compositions for recovery of products from organic acid pretreatment of plant materials

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE334286B (en) * 1968-12-05 1971-04-19 Mo Och Domsjoe Ab
US4198266A (en) * 1977-10-12 1980-04-15 Airco, Inc. Oxygen delignification of wood pulp
US4198261A (en) * 1977-12-05 1980-04-15 Gould Inc. Method for end point detection during plasma etching
US4806203A (en) * 1985-02-14 1989-02-21 Elton Edward F Method for alkaline delignification of lignocellulosic fibrous material at a consistency which is raised during reaction
JPH02289194A (en) * 1989-04-20 1990-11-29 Mitsubishi Paper Mills Ltd Method for bleaching lignocellulosic substance with oxygen

Also Published As

Publication number Publication date
JPH06501290A (en) 1994-02-10
EP0539381A1 (en) 1993-05-05
CA2069447A1 (en) 1992-10-19
CN1066308A (en) 1992-11-18
AU7875491A (en) 1992-11-17
AU647485B2 (en) 1994-03-24
SE9203801L (en) 1993-02-10
CA2069447C (en) 1996-08-27
EP0539381A4 (en) 1994-10-12
WO1992018689A1 (en) 1992-10-29

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