ATE168149T1 - Verfahren zur verbesserung der selektivität bei der delignifizierung von chemischem zellstoff - Google Patents

Verfahren zur verbesserung der selektivität bei der delignifizierung von chemischem zellstoff

Info

Publication number
ATE168149T1
ATE168149T1 AT92202952T AT92202952T ATE168149T1 AT E168149 T1 ATE168149 T1 AT E168149T1 AT 92202952 T AT92202952 T AT 92202952T AT 92202952 T AT92202952 T AT 92202952T AT E168149 T1 ATE168149 T1 AT E168149T1
Authority
AT
Austria
Prior art keywords
delignifiation
chemical pulp
improving selectivity
selectivity
improving
Prior art date
Application number
AT92202952T
Other languages
German (de)
English (en)
Inventor
Roy T Hill
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=27118364&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE168149(T1) "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
Application granted granted Critical
Publication of ATE168149T1 publication Critical patent/ATE168149T1/de

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
    • D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids
    • 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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • External Artificial Organs (AREA)
  • Preliminary Treatment Of Fibers (AREA)
AT92202952T 1991-10-04 1992-09-25 Verfahren zur verbesserung der selektivität bei der delignifizierung von chemischem zellstoff ATE168149T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US77085991A 1991-10-04 1991-10-04
US94283892A 1992-09-10 1992-09-10

Publications (1)

Publication Number Publication Date
ATE168149T1 true ATE168149T1 (de) 1998-07-15

Family

ID=27118364

Family Applications (1)

Application Number Title Priority Date Filing Date
AT92202952T ATE168149T1 (de) 1991-10-04 1992-09-25 Verfahren zur verbesserung der selektivität bei der delignifizierung von chemischem zellstoff

Country Status (9)

Country Link
EP (2) EP0535741B1 (pl)
JP (1) JPH05195467A (pl)
AT (1) ATE168149T1 (pl)
AU (1) AU660326B2 (pl)
DE (1) DE69226143T2 (pl)
ES (1) ES2120984T3 (pl)
FI (1) FI924448A7 (pl)
NZ (1) NZ244592A (pl)
PL (1) PL171990B1 (pl)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2269191A (en) * 1992-07-29 1994-02-02 Solvay Interox Ltd Method of treating aqueous process liquors
CZ285246B6 (cs) * 1992-11-27 1999-06-16 Eka Nobel Ab Způsob bělení buničiny obsahující lignocelulozu
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
EP0670928B2 (en) * 1992-11-27 2003-04-16 Eka Chemicals AB Process for delignification of lignocellulose-containing pulp
DE19516151A1 (de) * 1995-05-03 1996-11-07 Sven Siegle Verfahren zur Herstellung einer Pulpe aus zellulosehaltigem Material, die Pulpe selbst und deren Verwendung
ES2202424T3 (es) * 1996-03-04 2004-04-01 THE PROCTER & GAMBLE COMPANY Proceso de tratamiento de las prendas antes del lavado y composiciones blanqueadoras.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1014536A (en) * 1910-05-24 1912-01-09 Minosaku Takahashi Vessel-closure.
FR1014536A (fr) * 1940-04-01 1952-08-18 Du Pont Perfectionnements au blanchiment des pâtes de bois
SE420430B (sv) * 1978-02-17 1981-10-05 Mo Och Domsjoe Ab Forfarande for blekning och extraktion av lignocellulosahaltig material med peroxidhaltiga blekmedel
DE3005947B1 (de) * 1980-02-16 1981-01-29 Degussa Verfahren zur Bleiche von Zellstoffen mittels organischer Persaeure
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

Also Published As

Publication number Publication date
NZ244592A (en) 1994-02-25
FI924448L (fi) 1993-04-05
AU660326B2 (en) 1995-06-22
FI924448A0 (fi) 1992-10-02
JPH05195467A (ja) 1993-08-03
DE69226143D1 (de) 1998-08-13
PL171990B1 (pl) 1997-07-31
PL296122A1 (en) 1993-06-28
EP0844328A2 (fr) 1998-05-27
ES2120984T3 (es) 1998-11-16
EP0844328A3 (fr) 1998-07-15
EP0535741A1 (fr) 1993-04-07
EP0535741B1 (fr) 1998-07-08
DE69226143T2 (de) 1999-02-25
AU2538292A (en) 1993-04-22
FI924448A7 (fi) 1993-04-05

Similar Documents

Publication Publication Date Title
ATE1826T1 (de) Verfahren zur bleiche von zellstoffen mittels organischer persaeure.
ATE2018T1 (de) Verfahren zur delignifizierung und zum bleichen von chemischen und halbchemischen zellstoffen.
SE8504236L (sv) Forbettrad oxidativ extraktion
ATE252175T1 (de) Verfahren zur herstellung lignocellulosehaltiger pulpe aus nicht holzartigem material
KR950700462A (ko) 휴지 잉크제거방법(Wastepaper deinking process)
ATE132926T1 (de) Verfahren zur delignifizierung von chemischen zellstoffen
ATE7237T1 (de) Verfahren zur regenerierung von altpapier.
DE3574486D1 (de) Verfahren zur delignifizierung und bleiche von zellstoffen.
DE69212293D1 (de) Verfahren zur Oxidation von organischen Verbindungen mit nach einem Anthrachinon-Redoxverfahren hergestellten Wasserstoffperoxid
ATE168149T1 (de) Verfahren zur verbesserung der selektivität bei der delignifizierung von chemischem zellstoff
ATE160189T1 (de) Verfahren zum bleichen von papierzellstoff
DE3870190D1 (de) Verfahren zur bleichung und sterilisierung von gegenstaenden aus kork und gebleichte korkgegenstaende mittels dieses verfahrens.
SE8003911L (sv) Forfarande for syrgasblekning av cellulosamassa
DE69113444D1 (de) Verfahren zum bleichen von chemischem papierzellstoff.
DE69111098D1 (de) Verfahren zur Herstellung von gebleichtem Zellstoff mit hoher Ausbeute.
WO1994023117A3 (en) Bleaching recycled pulp with ozone and hydrogen peroxide
ATE24745T1 (de) Hypochlorit-behandlung von chemischen papierpulpen.
SE8604852D0 (sv) Delignification and bleaching of a cellulose pulp with an alkali-oxygen-hypochlorite extraction
DE3667184D1 (de) Verfahren zum bleichen von chemischen holzpulpen.
ATE175738T1 (de) Verfahren zum bleichen von zellstoff
MX174304B (es) Metodo para desteñir y blanquear fibras secundarias
FR2390541A1 (fr) Procede de blanchiment de cellulose
ATE131886T1 (de) Verfahren zum bleichen von zellstoffen in aliphatischen monocarbonsäuren
NO951464L (no) Fremgangsmåte til behandling av sulfittmasse för bleking med oksygenholdige kjemikalier
TH23226A (th) Method of bleaching pulp

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties