DE69301285D1 - Verfahren zur Delignifizierung von chemischen Zellstoffen - Google Patents

Verfahren zur Delignifizierung von chemischen Zellstoffen

Info

Publication number
DE69301285D1
DE69301285D1 DE69301285T DE69301285T DE69301285D1 DE 69301285 D1 DE69301285 D1 DE 69301285D1 DE 69301285 T DE69301285 T DE 69301285T DE 69301285 T DE69301285 T DE 69301285T DE 69301285 D1 DE69301285 D1 DE 69301285D1
Authority
DE
Germany
Prior art keywords
delignification
chemical pulps
peroxyacid
organic peroxyacid
exceed
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.)
Revoked
Application number
DE69301285T
Other languages
English (en)
Other versions
DE69301285T2 (de
Inventor
Patricia B Walsh
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.)
Solvay Interox Inc
Original Assignee
Solvay Interox 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25425145&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69301285(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Solvay Interox Inc filed Critical Solvay Interox Inc
Publication of DE69301285D1 publication Critical patent/DE69301285D1/de
Application granted granted Critical
Publication of DE69301285T2 publication Critical patent/DE69301285T2/de
Anticipated expiration legal-status Critical
Revoked 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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
    • 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
    • D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
DE69301285T 1992-07-06 1993-06-29 Verfahren zur Delignifizierung von chemischen Zellstoffen Revoked DE69301285T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US90808392A 1992-07-06 1992-07-06

Publications (2)

Publication Number Publication Date
DE69301285D1 true DE69301285D1 (de) 1996-02-22
DE69301285T2 DE69301285T2 (de) 1996-08-22

Family

ID=25425145

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69301285T Revoked DE69301285T2 (de) 1992-07-06 1993-06-29 Verfahren zur Delignifizierung von chemischen Zellstoffen

Country Status (13)

Country Link
US (1) US5431781A (de)
EP (1) EP0578303B1 (de)
JP (1) JPH06108392A (de)
AT (1) ATE132926T1 (de)
AU (1) AU666375B2 (de)
BR (1) BR9302768A (de)
CA (1) CA2099828A1 (de)
DE (1) DE69301285T2 (de)
ES (1) ES2086183T3 (de)
FI (1) FI933105A (de)
NZ (1) NZ248082A (de)
SI (1) SI9300364A (de)
SK (1) SK70493A3 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI942968A (fi) * 1994-06-20 1995-12-21 Kemira Chemicals Oy Menetelmä kemiallisen massan delignifioimiseksi
FI98841C (fi) * 1994-06-20 1997-08-25 Kemira Chemicals Oy Menetelmä kemiallisen massan delignifioimiseksi
FI942970A (fi) * 1994-06-20 1995-12-21 Kemira Chemicals Oy Menetelmä kemiallisen massan delignifioimiseksi
EP0858526A1 (de) * 1995-02-17 1998-08-19 Ahlstrom Machinery Oy Verfahren zur vorbehandlung eines für peroxidbleichung bestimmten zellstoffes
FI104572B (fi) 1996-05-30 2000-02-29 Kemira Chemicals Oy Menetelmä kemiallisen massan valkaisemiseksi
FR2814180B1 (fr) * 2000-09-18 2003-12-05 Michel Delmas Procede de blanchiment de pates a papier en milieu organique a hydratation controlee
WO2009050882A1 (ja) * 2007-10-17 2009-04-23 Nippon Steel Chemical Co., Ltd. 可溶化リグニン、糖類原料および単糖類原料の製造方法ならびに可溶化リグニン
WO2012166997A2 (en) 2011-05-31 2012-12-06 Clean Chemistry, Llc Electrochemical reactor and process
US9517955B2 (en) 2012-09-07 2016-12-13 Clean Chemistry, Llc System and method for generation of point of use reactive oxygen species
WO2016037149A1 (en) 2014-09-04 2016-03-10 Clean Chemistry, Inc. Method of water treatment utilizing a peracetate oxidant solution
CA2981034A1 (en) 2015-03-26 2016-09-29 Clean Chemistry, Inc. Systems and methods of reducing a bacteria population in high hydrogen sulfide water
EP3386948A4 (de) 2015-12-07 2019-06-12 Clean Chemistry Inc. Verfahren zur behandlung von pulpefasern
US10883224B2 (en) 2015-12-07 2021-01-05 Clean Chemistry, Inc. Methods of pulp fiber treatment
FI127996B (en) 2016-07-01 2019-07-15 Kemira Oyj Process for treating cellulose
US11136714B2 (en) 2016-07-25 2021-10-05 Clean Chemistry, Inc. Methods of optical brightening agent removal
US11001864B1 (en) 2017-09-07 2021-05-11 Clean Chemistry, Inc. Bacterial control in fermentation systems
US11311012B1 (en) 2017-09-07 2022-04-26 Clean Chemistry, Inc. Bacterial control in fermentation systems

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1014536A (fr) * 1940-04-01 1952-08-18 Du Pont Perfectionnements au blanchiment des pâtes de bois
DE3005947B1 (de) * 1980-02-16 1981-01-29 Degussa Verfahren zur Bleiche von Zellstoffen mittels organischer Persaeure
JPS5721591A (en) * 1980-07-11 1982-02-04 Mitsubishi Gas Chemical Co Peroxide bleaching of wood pulp
US4793898A (en) * 1985-02-22 1988-12-27 Oy Keskuslaboratorio - Centrallaboratorium Ab Process for bleaching organic peroxyacid cooked material with an alkaline solution of hydrogen peroxide
US4826568A (en) * 1985-08-05 1989-05-02 Interox (Societe Anonyme) Process for delignification of cellulosic substances by pretreating with a complexing agent followed by peroxide prior to kraft digestion

Also Published As

Publication number Publication date
EP0578303B1 (de) 1996-01-10
JPH06108392A (ja) 1994-04-19
AU4170493A (en) 1994-01-13
ATE132926T1 (de) 1996-01-15
EP0578303A1 (de) 1994-01-12
SI9300364A (en) 1994-03-31
FI933105A (fi) 1994-01-07
AU666375B2 (en) 1996-02-08
SK70493A3 (en) 1994-02-02
ES2086183T3 (es) 1996-06-16
CA2099828A1 (fr) 1994-01-07
NZ248082A (en) 1995-12-21
US5431781A (en) 1995-07-11
BR9302768A (pt) 1994-02-08
DE69301285T2 (de) 1996-08-22
FI933105A0 (fi) 1993-07-06

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8331 Complete revocation