CA2109513A1 - A method for the manufacture of chemithermomechanical pulp - Google Patents

A method for the manufacture of chemithermomechanical pulp

Info

Publication number
CA2109513A1
CA2109513A1 CA002109513A CA2109513A CA2109513A1 CA 2109513 A1 CA2109513 A1 CA 2109513A1 CA 002109513 A CA002109513 A CA 002109513A CA 2109513 A CA2109513 A CA 2109513A CA 2109513 A1 CA2109513 A1 CA 2109513A1
Authority
CA
Canada
Prior art keywords
chips
sodium
pulp
impregnating
liquid
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
CA002109513A
Other languages
English (en)
French (fr)
Inventor
Bo Falk
Thomas Granfeldt
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.)
Valmet AB
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2109513A1 publication Critical patent/CA2109513A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/02—Pretreatment of the raw materials by chemical or physical means
    • D21B1/021—Pretreatment of the raw materials by chemical or physical means by chemical means
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/14—Disintegrating in mills
    • D21B1/16—Disintegrating in mills in the presence of chemical agents

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
CA002109513A 1991-05-24 1992-05-22 A method for the manufacture of chemithermomechanical pulp Abandoned CA2109513A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9101587A SE468644B (sv) 1991-05-24 1991-05-24 Framstaellning av kemitermomekanisk massa samt impregneringsloesning innehaallande borhydrid och sulfit
SE9101587-5 1991-05-24
PCT/SE1992/000348 WO1992020855A1 (en) 1991-05-24 1992-05-22 A method for the manufacture of chemithermomechanical pulp

Publications (1)

Publication Number Publication Date
CA2109513A1 true CA2109513A1 (en) 1992-11-25

Family

ID=20382840

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002109513A Abandoned CA2109513A1 (en) 1991-05-24 1992-05-22 A method for the manufacture of chemithermomechanical pulp

Country Status (7)

Country Link
AU (1) AU1882492A (sv)
CA (1) CA2109513A1 (sv)
FI (1) FI935205A0 (sv)
NO (1) NO934229D0 (sv)
NZ (1) NZ242868A (sv)
SE (1) SE468644B (sv)
WO (1) WO1992020855A1 (sv)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU4271596A (en) * 1995-12-19 1997-07-14 Kvaerner Hymac Inc. Process for treating refiner pulp
SE525872C2 (sv) * 2002-09-06 2005-05-17 Stora Enso Ab Metod att tillverka mekanisk massa med reducerad energikonsumtion
FI121114B (sv) * 2007-05-04 2010-07-15 Kemira Oyj Förfarande för framställning av ditionit
EP2348154A1 (de) * 2010-01-22 2011-07-27 Andritz AG Verfahren zur Herstellung von Holzstoff
EP2924166A1 (de) 2014-03-25 2015-09-30 Basf Se Verfahren zur Herstellung von gebleichtem Holzfaserstoff

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2615874B1 (fr) * 1987-05-25 1992-02-21 Atochem Procede de preparation de pates chimicothermomecaniques

Also Published As

Publication number Publication date
FI935205A (fi) 1993-11-23
FI935205A0 (fi) 1993-11-23
SE9101587D0 (sv) 1991-05-24
NO934229L (no) 1993-11-23
SE9101587L (sv) 1992-11-25
AU1882492A (en) 1992-12-30
NZ242868A (en) 1994-11-25
NO934229D0 (no) 1993-11-23
WO1992020855A1 (en) 1992-11-26
SE468644B (sv) 1993-02-22

Similar Documents

Publication Publication Date Title
AU592488B2 (en) A method for stabilising the brightness of bleached lignin containing cellulose pulp
US4915785A (en) Single stage process for bleaching of pulp with an aqueous hydrogen peroxide bleaching composition containing magnesium sulphate and sodium silicate
CN1126260A (zh) 磺化纤维素及其制备方法
DE2818320A1 (de) Verfahren zur behandlung von holzhackschnitzeln
NO180495C (no) Fremgangsmåte ved delignifisering og bleking av kjemisk oppsluttet lignocelluloseholdig materiale
WO1997022749A1 (en) Process for treating refiner pulp
CA2067129A1 (en) Process for manufacturing chemo-mechanical and/or chemo-thermal-mechanical wood pulps
US5007985A (en) Method of reducing the energy consumption at the refining of cellulose containing material
AU650962B2 (en) Process for preparing bleached paper pulp in high yield
US3919041A (en) Multi-stage chlorine dioxide delignification of wood pulp
CA2109513A1 (en) A method for the manufacture of chemithermomechanical pulp
BR9204097A (pt) Processo para obtener melhorada,seletividade de deslignificacao de polpa durante a deslignificacao com oxigenio,de elevada consistencia
CA1234655A (en) Method of peroxide bleaching cellulose-containing material
EP0464110B1 (en) Bleaching process for the production of high bright pulps
Chang et al. A COMPARISON BETWEEN THE EFFECTS OF OZONE AND ALKALINE PEROXIDE TREATMENTS ON TMP PROPERTIES AND SUBSEQUENT LOW CONSISTENCY REFINING.
US4731161A (en) Semibleaching liquor for Kraft paper products
US3284283A (en) Production of wood pulps including treatment of cellulosic fibers with bisulfite ion followed by alkali metal borohydride
US2527563A (en) Method of bleaching semichemical pulps
CA1174013A (en) Method at mechanical cellulose pulp manufacture
US4388148A (en) Process for producing pulp
FI93746B (sv) Förfarande för framställning av blekt kemitermomekanisk massa
SE9202338D0 (sv) Use of wash press for pulp alkali addition process
CA2405325A1 (en) A method for controlling the delignification and bleaching of a pulp suspension
AU2716892A (en) Wash press modification for oxygen delignification process
US2805118A (en) Multistage process bleaching of alkaline-process wood pulps including an acid sour between two terminal alkaline hypochlorite stages

Legal Events

Date Code Title Description
FZDE Discontinued