[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

FI942970A - Process for delignifying a chemical pulp - Google Patents

Process for delignifying a chemical pulp Download PDF

Info

Publication number
FI942970A
FI942970A FI942970A FI942970A FI942970A FI 942970 A FI942970 A FI 942970A FI 942970 A FI942970 A FI 942970A FI 942970 A FI942970 A FI 942970A FI 942970 A FI942970 A FI 942970A
Authority
FI
Finland
Prior art keywords
delignifying
chemical pulp
pulp
chemical
Prior art date
Application number
FI942970A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI942970A0 (en
Inventor
Jukka Jaekaerae
Aarto Paren
Juha Patola
Original Assignee
Kemira Chemicals Oy
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 Kemira Chemicals Oy filed Critical Kemira Chemicals Oy
Priority to FI942970A priority Critical patent/FI942970A/en
Publication of FI942970A0 publication Critical patent/FI942970A0/en
Priority to AU27398/95A priority patent/AU2739895A/en
Priority to PCT/FI1995/000351 priority patent/WO1995035406A1/en
Publication of FI942970A publication Critical patent/FI942970A/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
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the 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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FI942970A 1994-06-20 1994-06-20 Process for delignifying a chemical pulp FI942970A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI942970A FI942970A (en) 1994-06-20 1994-06-20 Process for delignifying a chemical pulp
AU27398/95A AU2739895A (en) 1994-06-20 1995-06-19 Delignification of chemical pulp with peroxide in the presence of a transition metal
PCT/FI1995/000351 WO1995035406A1 (en) 1994-06-20 1995-06-19 Delignification of chemical pulp with peroxide in the presence of a transition metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI942970A FI942970A (en) 1994-06-20 1994-06-20 Process for delignifying a chemical pulp

Publications (2)

Publication Number Publication Date
FI942970A0 FI942970A0 (en) 1994-06-20
FI942970A true FI942970A (en) 1995-12-21

Family

ID=8540968

Family Applications (1)

Application Number Title Priority Date Filing Date
FI942970A FI942970A (en) 1994-06-20 1994-06-20 Process for delignifying a chemical pulp

Country Status (3)

Country Link
AU (1) AU2739895A (en)
FI (1) FI942970A (en)
WO (1) WO1995035406A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI1012052A2 (en) 2009-05-28 2017-12-26 Gp Cellulose Gmbh hydrolyzed and chemically modified kraft fibers and kraft fiber production and bleaching methods
US9511167B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Modified cellulose from chemical kraft fiber and methods of making and using the same
US9512563B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Surface treated modified cellulose from chemical kraft fiber and methods of making and using same
US9512237B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Method for inhibiting the growth of microbes with a modified cellulose fiber
AU2012268700B2 (en) 2011-05-23 2017-02-02 Gp Cellulose Gmbh Softwood kraft fiber having improved whiteness and brightness and methods of making and using the same
CN104302831A (en) 2012-01-12 2015-01-21 Gp纤维素股份有限公司 Low viscosity kraft fiber having reduced yellowing properties and method of making and using same
PL2839071T3 (en) 2012-04-18 2019-05-31 Gp Cellulose Gmbh The use of surfactant to treat pulp and improve the incorporation of kraft pulp into fiber for the production of viscose and other secondary fiber products
MX365675B (en) 2013-02-08 2019-06-10 Gp Cellulose Gmbh Softwood kraft fiber having an improved a-cellulose content and its use in the production of chemical cellulose products.
BR112015019882A2 (en) 2013-03-14 2017-07-18 Gp Cellulose Gmbh oxidized bleached kraft fiber and methods for making kraft pulp and softwood kraft fiber and for bleaching multi-stage bleaching cellulose kraft pulp
CN108049234B (en) 2013-03-15 2020-12-08 Gp 纤维素股份有限公司 Chemically modified kraft fiber
PT3066257T (en) 2013-11-06 2019-06-04 Evonik Degussa Gmbh Method for delignifying and bleaching pulp
EP3541849B1 (en) 2016-11-16 2023-11-15 GP Cellulose GmbH Modified cellulose from chemical fiber and methods of making and using the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4410397A (en) * 1978-04-07 1983-10-18 International Paper Company Delignification and bleaching process and solution for lignocellulosic pulp with peroxide in the presence of metal additives
US4427490A (en) * 1978-04-07 1984-01-24 International Paper Company Delignification and bleaching process for lignocellulosic pulp with peroxide in the presence of metal additives
US4661205A (en) * 1981-08-28 1987-04-28 Scott Paper Company Method of bleaching lignocellulosic material with peroxide catalyzed with a salt of a metal
EP0578303B1 (en) * 1992-07-06 1996-01-10 Solvay Interox Process for the delignification of a chemical paper pulp

Also Published As

Publication number Publication date
AU2739895A (en) 1996-01-15
WO1995035406A1 (en) 1995-12-28
FI942970A0 (en) 1994-06-20

Similar Documents

Publication Publication Date Title
FI102301B1 (en) Process for treating cellulose pulp
FI960145A0 (en) Process for making pulp
FI971929A0 (en) Pulp drying device
FI942968A (en) Process for delignifying a chemical pulp
FI944928A (en) Procedure for bleaching chemical pulp
FI942970A (en) Process for delignifying a chemical pulp
FI951081A0 (en) Process for making coated paper
FI960438A (en) Apparatus and method for cleaning a pulp scrubber from stickies
FI972063A0 (en) Apparatus for producing a web of material
FI971605A0 (en) Process for treating a bleaching acid and alkaline wastewater separately
FI956153A (en) Process for making white liquor
FI965216A (en) Process for bleaching a high consistency lignocellulose pulp
ZA941468B (en) Process for the delignification of a chemical paper pulp
FI951166A (en) Bleaching method for pulp
FI973844A (en) Apparatus for mixing chemicals into a fibrous suspension
FI974284A0 (en) Bleaching procedure for cellulose pulp
FI941229A0 (en) Pulp bleaching process
FI955519A (en) Method and apparatus for delignifying chemical pulp
FI103818B1 (en) Pulp Bleaching Process
FI964081A0 (en) Procedure for spreading pulp on a substrate
FI964843A (en) Procedure for treating pulp
SE9303819D0 (en) Process for bleaching lignocellulosic pulp
ZA988300B (en) Process for the bleaching of chemical paper pulps
FI20010008A0 (en) Process for preparing a chemical pulp
FI943388A0 (en) Procedure for bleaching pulp

Legal Events

Date Code Title Description
FD Application lapsed