CA2094819C - Procede de reduction en pate - Google Patents

Procede de reduction en pate

Info

Publication number
CA2094819C
CA2094819C CA002094819A CA2094819A CA2094819C CA 2094819 C CA2094819 C CA 2094819C CA 002094819 A CA002094819 A CA 002094819A CA 2094819 A CA2094819 A CA 2094819A CA 2094819 C CA2094819 C CA 2094819C
Authority
CA
Canada
Prior art keywords
digester
bleaching
pumping
liquor
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 - Fee Related
Application number
CA002094819A
Other languages
English (en)
Other versions
CA2094819A1 (fr
Inventor
Ethan K. Andrews
Fernando E. Mera
Lawrence K. Swift
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.)
Beloit Technologies Inc
Original Assignee
Beloit Technologies 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 Beloit Technologies Inc filed Critical Beloit Technologies Inc
Publication of CA2094819A1 publication Critical patent/CA2094819A1/fr
Application granted granted Critical
Publication of CA2094819C publication Critical patent/CA2094819C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/26—Multistage processes
    • 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
    • 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
    • D21C9/1031—Pulse, dynamic, displacement processes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Radiation-Therapy Devices (AREA)
  • Prostheses (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Drying Of Semiconductors (AREA)
  • Materials For Photolithography (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

Procédé de préparation de pâte de cellulose dans lequel le traitement de la pâte de cellulose est rallongé pour intégrer des traitements s'effectuant dans un lessiveur (Figures 7, 8, 9) alors qu'auparavant ils étaient réalisés à l'extérieur du lessiveur (12) d'un appareil de traitement en plusieurs étapes séparées. De manière plus spécifique, l'invention concerne le blanchiment effectué à l'intérieur du lessiveur, en utilisant de préférence des réactifs de blanchiment ne contenant pas de chlore.
CA002094819A 1990-10-24 1991-10-07 Procede de reduction en pate Expired - Fee Related CA2094819C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US60260590A 1990-10-24 1990-10-24
US602,605 1990-10-24

Publications (2)

Publication Number Publication Date
CA2094819A1 CA2094819A1 (fr) 1992-04-25
CA2094819C true CA2094819C (fr) 1999-02-02

Family

ID=24412030

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002094819A Expired - Fee Related CA2094819C (fr) 1990-10-24 1991-10-07 Procede de reduction en pate

Country Status (14)

Country Link
EP (1) EP0554391B1 (fr)
CN (1) CN1028250C (fr)
AT (1) ATE151824T1 (fr)
AU (1) AU9022291A (fr)
CA (1) CA2094819C (fr)
DE (1) DE69125722T2 (fr)
ES (1) ES2101830T3 (fr)
FI (1) FI931854A7 (fr)
MX (1) MX9101706A (fr)
NO (1) NO302187B1 (fr)
PL (1) PL168216B1 (fr)
RU (1) RU2068904C1 (fr)
WO (1) WO1992007994A1 (fr)
ZA (1) ZA918441B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103498375A (zh) * 2013-09-24 2014-01-08 昆明理工大学 一种光叶楮白皮的制浆方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5936338A (ja) * 1982-08-24 1984-02-28 Matsushita Electric Ind Co Ltd 光デイスク記録再生方法
USH1690H (en) * 1995-07-20 1997-11-04 Nye; Jeffrey Process for bleaching kraft pulp
US7867360B2 (en) * 2004-07-13 2011-01-11 Fpinnovations Generation of active polysulphide with manganese and bismuth catalysts
FR2885371B1 (fr) * 2005-05-03 2007-08-03 Cie Ind De La Matiere Vegetale Installation pour la mise en oeuvre d'un procede de production de pate a papier, de lignines et de sucres et procede de production au moyen d'une telle installation
US9932709B2 (en) 2013-03-15 2018-04-03 Ecolab Usa Inc. Processes and compositions for brightness improvement in paper production
BR102014027199B1 (pt) * 2014-07-14 2022-10-04 Nalco Company Método para aprimorar a fabricação de polpa de soda ou kraft

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE353105C (de) * 1921-07-16 1922-05-18 Leopold Enge Verfahren zur Herstellung von Holzstoff
SE373397C (sv) * 1972-03-30 1984-02-06 Mo Och Domsjoe Ab Sett att forbettra blekningsforloppet vid bleknig av cellulosamassa med en syre innehallande gas
US4578149A (en) * 1981-03-05 1986-03-25 Fagerlund Bertil K E Process for digesting cellulosic material with heat recovery

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103498375A (zh) * 2013-09-24 2014-01-08 昆明理工大学 一种光叶楮白皮的制浆方法
CN103498375B (zh) * 2013-09-24 2015-06-03 昆明理工大学 一种光叶楮白皮的制浆方法

Also Published As

Publication number Publication date
FI931854L (fi) 1993-04-23
DE69125722T2 (de) 1997-09-04
MX9101706A (es) 1992-06-05
DE69125722D1 (de) 1997-05-22
CN1061452A (zh) 1992-05-27
EP0554391B1 (fr) 1997-04-16
ES2101830T3 (es) 1997-07-16
CA2094819A1 (fr) 1992-04-25
PL168216B1 (pl) 1996-01-31
FI931854A0 (fi) 1993-04-23
FI931854A7 (fi) 1993-04-23
CN1028250C (zh) 1995-04-19
WO1992007994A1 (fr) 1992-05-14
EP0554391A1 (fr) 1993-08-11
NO931486D0 (no) 1993-04-22
NO931486L (no) 1993-04-22
NO302187B1 (no) 1998-02-02
AU9022291A (en) 1992-05-26
ZA918441B (en) 1992-07-29
ATE151824T1 (de) 1997-05-15
RU2068904C1 (ru) 1996-11-10

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Legal Events

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