CA2311718A1 - Oxygen delignification of lignocellulosic material - Google Patents

Oxygen delignification of lignocellulosic material Download PDF

Info

Publication number
CA2311718A1
CA2311718A1 CA002311718A CA2311718A CA2311718A1 CA 2311718 A1 CA2311718 A1 CA 2311718A1 CA 002311718 A CA002311718 A CA 002311718A CA 2311718 A CA2311718 A CA 2311718A CA 2311718 A1 CA2311718 A1 CA 2311718A1
Authority
CA
Canada
Prior art keywords
pulp
stage
oxygen
soaking
alkali
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.)
Abandoned
Application number
CA002311718A
Other languages
English (en)
French (fr)
Inventor
Jorge Luiz Colodette
Ana Sabina De Campos Henriques De Brito
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.)
Praxair Technology Inc
Original Assignee
Praxair Technology Inc
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 Praxair Technology Inc filed Critical Praxair Technology Inc
Publication of CA2311718A1 publication Critical patent/CA2311718A1/en
Abandoned 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
    • D21C9/1005—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)
  • Paper (AREA)
CA002311718A 1999-06-14 2000-06-13 Oxygen delignification of lignocellulosic material Abandoned CA2311718A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US33098399A 1999-06-14 1999-06-14
US09/330,983 1999-06-14

Publications (1)

Publication Number Publication Date
CA2311718A1 true CA2311718A1 (en) 2000-12-14

Family

ID=23292141

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002311718A Abandoned CA2311718A1 (en) 1999-06-14 2000-06-13 Oxygen delignification of lignocellulosic material

Country Status (7)

Country Link
EP (1) EP1061173A1 (ko)
JP (1) JP2001003287A (ko)
KR (1) KR100538083B1 (ko)
CN (1) CN1277283A (ko)
BR (1) BR0002634A (ko)
CA (1) CA2311718A1 (ko)
NO (1) NO20003014L (ko)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE540043C2 (en) * 2015-11-27 2018-03-06 Valmet Oy Method and system for oxygen delignification of cellulose pulp
EP3682056A4 (en) * 2017-09-11 2021-06-09 Solenis Technologies, L.P. PROCESS FOR IMPROVED OXYGEN DELIGNIFICATION OF CHEMICAL WOOD PULP
CN112342816B (zh) * 2020-11-02 2022-08-09 天津科技大学 一种氧脱木素中纸浆的保护技术
CN112778539A (zh) * 2021-01-04 2021-05-11 中国林业科学研究院林产化学工业研究所 一种从纤维原料中制备高羧基含量的氧化木质素的方法
SE2250793A1 (en) * 2022-06-27 2023-12-28 Valmet Oy Method for processing cellulose pulp obtained from a kraft process
CN115417931B (zh) * 2022-09-22 2024-03-22 上海同化益生纤生物科技有限公司 一种耐温型纤维素的制备方法与应用

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US5085734A (en) * 1989-02-15 1992-02-04 Union Camp Patent Holding, Inc. Methods of high consistency oxygen delignification using a low consistency alkali pretreatment
US5296292A (en) * 1990-09-04 1994-03-22 W. L. Gore & Associates, Inc. Elongated cylindrical tensile article
EP0530881A1 (en) * 1991-08-14 1993-03-10 Union Camp Patent Holding, Inc. Use of wash press for pulp alkali addition process
WO1997027358A2 (en) * 1995-12-07 1997-07-31 Beloit Technologies, Inc. Oxygen delignification of medium consistency pulp slurry

Also Published As

Publication number Publication date
NO20003014D0 (no) 2000-06-13
BR0002634A (pt) 2001-01-02
JP2001003287A (ja) 2001-01-09
KR100538083B1 (ko) 2005-12-22
EP1061173A1 (en) 2000-12-20
CN1277283A (zh) 2000-12-20
NO20003014L (no) 2000-12-15
KR20010049536A (ko) 2001-06-15

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FZDE Dead