DE3562496D1 - Process for delignifying sulphate pulp - Google Patents

Process for delignifying sulphate pulp

Info

Publication number
DE3562496D1
DE3562496D1 DE8585112163T DE3562496T DE3562496D1 DE 3562496 D1 DE3562496 D1 DE 3562496D1 DE 8585112163 T DE8585112163 T DE 8585112163T DE 3562496 T DE3562496 T DE 3562496T DE 3562496 D1 DE3562496 D1 DE 3562496D1
Authority
DE
Germany
Prior art keywords
delignifying
oxygen
sulphate pulp
hydrogen peroxide
pulp
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.)
Expired
Application number
DE8585112163T
Other languages
English (en)
Inventor
Horst Dr Kruger
Hans-Ulrich Dr Suss
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.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
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 Degussa GmbH filed Critical Degussa GmbH
Priority to DE8585112163T priority Critical patent/DE3562496D1/de
Application granted granted Critical
Publication of DE3562496D1 publication Critical patent/DE3562496D1/de
Expired 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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • External Artificial Organs (AREA)
DE8585112163T 1984-12-19 1985-09-25 Process for delignifying sulphate pulp Expired DE3562496D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8585112163T DE3562496D1 (en) 1984-12-19 1985-09-25 Process for delignifying sulphate pulp

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843446301 DE3446301A1 (de) 1984-12-19 1984-12-19 Verfahren zur delignifizierung von sulfatzellstoffen
DE8585112163T DE3562496D1 (en) 1984-12-19 1985-09-25 Process for delignifying sulphate pulp

Publications (1)

Publication Number Publication Date
DE3562496D1 true DE3562496D1 (en) 1988-06-09

Family

ID=6253194

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19843446301 Withdrawn DE3446301A1 (de) 1984-12-19 1984-12-19 Verfahren zur delignifizierung von sulfatzellstoffen
DE8585112163T Expired DE3562496D1 (en) 1984-12-19 1985-09-25 Process for delignifying sulphate pulp

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE19843446301 Withdrawn DE3446301A1 (de) 1984-12-19 1984-12-19 Verfahren zur delignifizierung von sulfatzellstoffen

Country Status (6)

Country Link
EP (1) EP0185858B1 (de)
JP (1) JPS61146894A (de)
AT (1) ATE33998T1 (de)
DE (2) DE3446301A1 (de)
FI (1) FI853492L (de)
NO (1) NO853688L (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0863251A1 (de) * 1997-03-04 1998-09-09 Oji Paper Co., Ltd. Verfahren zur Herstellung gebleichtes Zellstoffs
US5919238A (en) * 1998-03-04 1999-07-06 Ford Global Technologies, Inc. Method for aligning a vehicle suspension
WO2015155924A1 (ja) 2014-04-08 2015-10-15 パナソニックＩｐマネジメント株式会社 有機ｅｌ素子及び照明装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3719552A (en) * 1971-06-18 1973-03-06 American Cyanamid Co Bleaching of lignocellulosic materials with oxygen in the presence of a peroxide
SE420430B (sv) * 1978-02-17 1981-10-05 Mo Och Domsjoe Ab Forfarande for blekning och extraktion av lignocellulosahaltig material med peroxidhaltiga blekmedel
US4372812A (en) * 1978-04-07 1983-02-08 International Paper Company Chlorine free process for bleaching lignocellulosic pulp
EP0088073A4 (de) * 1981-09-04 1984-01-09 Weyerhaeuser Co Verfahren zum behandeln von pulpe mit mehreren sauerstoffstufen.
DE3207157C1 (de) * 1982-02-27 1983-06-09 Degussa Ag, 6000 Frankfurt Verfahren zur Herstellung von halbgebleichten Zellstoffen

Also Published As

Publication number Publication date
NO853688L (no) 1986-06-20
FI853492A0 (fi) 1985-09-12
JPS61146894A (ja) 1986-07-04
FI853492L (fi) 1986-06-20
EP0185858B1 (de) 1988-05-04
DE3446301A1 (de) 1986-06-19
ATE33998T1 (de) 1988-05-15
EP0185858A1 (de) 1986-07-02

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee