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FI914766A7 - Chlorine-free wood pulp and its manufacturing method - Google Patents

Chlorine-free wood pulp and its manufacturing method Download PDF

Info

Publication number
FI914766A7
FI914766A7 FI914766A FI914766A FI914766A7 FI 914766 A7 FI914766 A7 FI 914766A7 FI 914766 A FI914766 A FI 914766A FI 914766 A FI914766 A FI 914766A FI 914766 A7 FI914766 A7 FI 914766A7
Authority
FI
Finland
Prior art keywords
chlorine
manufacturing
wood pulp
free wood
free
Prior art date
Application number
FI914766A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI914766A0 (en
FI914766L (en
Inventor
Malcolm Cronlund
Jairo H Lora
Jeanne L Powers
Original Assignee
Alcell Tech 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 Alcell Tech Inc filed Critical Alcell Tech Inc
Publication of FI914766A0 publication Critical patent/FI914766A0/en
Publication of FI914766L publication Critical patent/FI914766L/en
Publication of FI914766A7 publication Critical patent/FI914766A7/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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
    • 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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
    • 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
    • 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)
FI914766A 1990-10-12 1991-10-09 Chlorine-free wood pulp and its manufacturing method FI914766A7 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US59676590A 1990-10-12 1990-10-12
US77062891A 1991-10-03 1991-10-03

Publications (3)

Publication Number Publication Date
FI914766A0 FI914766A0 (en) 1991-10-09
FI914766L FI914766L (en) 1992-04-13
FI914766A7 true FI914766A7 (en) 1992-04-13

Family

ID=27082622

Family Applications (1)

Application Number Title Priority Date Filing Date
FI914766A FI914766A7 (en) 1990-10-12 1991-10-09 Chlorine-free wood pulp and its manufacturing method

Country Status (8)

Country Link
EP (1) EP0480469A3 (en)
JP (1) JPH06287881A (en)
AU (2) AU8575691A (en)
BR (1) BR9104455A (en)
CA (1) CA2053035C (en)
FI (1) FI914766A7 (en)
MX (1) MX9101558A (en)
PT (1) PT99205A (en)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2102547C1 (en) * 1990-05-17 1998-01-20 Юнион Кемп Корпорейшн Method of preparing bleached pulp and a method for delignification and bleaching of lignocellulose material
SE512137C2 (en) † 1992-10-29 2000-01-31 Eka Chemicals Ab Process for bleaching lignocellulosic pulp
US6007678A (en) * 1992-11-27 1999-12-28 Eka Nobel Ab Process for delignification of lignocellulose-containing pulp with an organic peracid or salts thereof
DE69306974T3 (en) * 1992-11-27 2004-01-08 Eka Chemicals Ab METHOD FOR THE DELIGRIFICATION OF LIGNOCELLULOSE-CONTAINING PULP
BE1006881A3 (en) * 1993-03-02 1995-01-17 Solvay Interox Method for delignification of chemical pulp.
CA2163389A1 (en) * 1994-11-23 1996-05-24 Malcolm Cronlund Chlorine-free organosolv pulps
WO1997036040A1 (en) * 1996-03-25 1997-10-02 Alcell Technologies Inc. Ozone-bleached organosolv pulps
JP3794254B2 (en) * 2000-02-28 2006-07-05 王子製紙株式会社 Neutral paper
SE532370C2 (en) * 2008-02-28 2009-12-29 Metso Paper Inc Method of bleaching a pulp
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
KR101866196B1 (en) 2009-05-28 2018-07-04 게페 첼루로제 게엠베하 Modified cellulose from chemical kraft fiber and methods of making and using the same
US9512237B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Method for inhibiting the growth of microbes with a modified cellulose fiber
US9551076B2 (en) 2011-05-31 2017-01-24 Clean Chemistry, Inc. Electrochemical reactor and process
CN104812706B (en) 2012-09-07 2019-06-25 清洁化学公司 Systems and methods for generating reactive oxygen species and applications thereof
KR102180512B1 (en) 2013-02-08 2020-11-19 게페 첼루로제 게엠베하 Softwood kraft fiber having an improved a-cellulose content and its use in the production of chemical cellulose products
MX364379B (en) 2013-03-14 2019-04-24 Gp Cellulose Gmbh A method of making highly functional, low viscosity kraft fiber using an acidic bleaching sequence and a fiber made by the process.
BR112015020000A2 (en) 2013-03-15 2017-07-18 Gp Cellulose Gmbh chemically modified kraft fiber and manufacturing methods
FR3007044B1 (en) * 2013-06-13 2016-01-15 Air Liquide PROCESS FOR TREATING CHEMICAL PAPER PASTES BY OZONE TREATMENT IN THE PRESENCE OF MAGNESIUM IONS
AT515152B1 (en) * 2013-11-26 2015-12-15 Chemiefaser Lenzing Ag A process for pretreating recovered cotton fibers for use in the manufacture of regenerated cellulose moldings
EP3189016B1 (en) 2014-09-04 2020-06-03 Clean Chemistry, Inc. Method of water treatment utilizing a peracetate oxidant solution
US10472265B2 (en) 2015-03-26 2019-11-12 Clean Chemistry, Inc. Systems and methods of reducing a bacteria population in high hydrogen sulfide water
US10883224B2 (en) 2015-12-07 2021-01-05 Clean Chemistry, Inc. Methods of pulp fiber treatment
WO2017100284A1 (en) 2015-12-07 2017-06-15 Clean Chemistry, Inc. Methods of microbial control
US11136714B2 (en) 2016-07-25 2021-10-05 Clean Chemistry, Inc. Methods of optical brightening agent removal
WO2018093697A1 (en) 2016-11-16 2018-05-24 Gp Cellulose Gmbh Modified cellulose from chemical fiber and methods of making and using the same
US11311012B1 (en) 2017-09-07 2022-04-26 Clean Chemistry, Inc. Bacterial control in fermentation systems
US11591751B2 (en) * 2019-09-17 2023-02-28 Gpcp Ip Holdings Llc High efficiency fiber bleaching process
US12286751B2 (en) 2021-01-06 2025-04-29 Gpcp Ip Holdings Llc Oxygen treatment of high kappa fibers
US12435469B2 (en) 2022-02-22 2025-10-07 Gpcp Ip Holdings Llc High yield chemical pulping and bleaching process

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2219505C3 (en) * 1972-04-21 1974-10-17 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Chlorine-free multi-stage bleaching of cellulose
SE462919B (en) * 1979-05-11 1990-09-17 Sunds Defibrator Ind Ab PROCEDURE TO PERFORM ALKALIE EXTRACTION OF CELLULOSAMASS IN THE PRESENCE OF ACID
AT373303B (en) * 1981-08-06 1984-01-10 Chemiefaser Lenzing Ag METHOD FOR THE PRODUCTION OF LOW-LEVEL CELLS
US4619733A (en) * 1983-11-30 1986-10-28 Kooi Boon Lam Pollution free pulping process using recycled wash effluent from multiple bleach stages to remove black liquor and recovering sodium hydroxide from the black liquor
EP0325890B1 (en) * 1988-01-25 1993-06-09 Acetocell GmbH & Co. KG Process for treating lignin containing cellulose pulp with ozone
AT395028B (en) * 1990-02-07 1992-08-25 Chemiefaser Lenzing Ag METHOD FOR CHLORINE-FREE BLEACHING OF FIBER FIBER

Also Published As

Publication number Publication date
EP0480469A2 (en) 1992-04-15
EP0480469A3 (en) 1994-06-01
FI914766A0 (en) 1991-10-09
JPH06287881A (en) 1994-10-11
FI914766L (en) 1992-04-13
PT99205A (en) 1992-09-30
AU8575691A (en) 1992-04-30
AU1018395A (en) 1995-03-09
BR9104455A (en) 1992-06-09
CA2053035C (en) 1997-09-30
MX9101558A (en) 1992-06-05
CA2053035A1 (en) 1992-04-13

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Legal Events

Date Code Title Description
GB Transfer or assigment of application

Owner name: ALCELL TECHNOLOGIES INC.

FD Application lapsed