DE3446301A1 - Verfahren zur delignifizierung von sulfatzellstoffen - Google Patents

Verfahren zur delignifizierung von sulfatzellstoffen

Info

Publication number
DE3446301A1
DE3446301A1 DE19843446301 DE3446301A DE3446301A1 DE 3446301 A1 DE3446301 A1 DE 3446301A1 DE 19843446301 DE19843446301 DE 19843446301 DE 3446301 A DE3446301 A DE 3446301A DE 3446301 A1 DE3446301 A1 DE 3446301A1
Authority
DE
Germany
Prior art keywords
oxygen
delignification
hydrogen peroxide
cellulose
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.)
Withdrawn
Application number
DE19843446301
Other languages
German (de)
English (en)
Inventor
Horst Dr. 6100 Darmstadt Krüger
Hans-Ulrich Dr. 6467 Hasselroth Süss
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 DE19843446301 priority Critical patent/DE3446301A1/de
Priority to FI853492A priority patent/FI853492L/fi
Priority to NO853688A priority patent/NO853688L/no
Priority to DE8585112163T priority patent/DE3562496D1/de
Priority to EP85112163A priority patent/EP0185858B1/de
Priority to AT85112163T priority patent/ATE33998T1/de
Priority to JP60281267A priority patent/JPS61146894A/ja
Publication of DE3446301A1 publication Critical patent/DE3446301A1/de
Withdrawn legal-status Critical Current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)
DE19843446301 1984-12-19 1984-12-19 Verfahren zur delignifizierung von sulfatzellstoffen Withdrawn DE3446301A1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE19843446301 DE3446301A1 (de) 1984-12-19 1984-12-19 Verfahren zur delignifizierung von sulfatzellstoffen
FI853492A FI853492L (fi) 1984-12-19 1985-09-12 Foerfarande foer delignifiering av sulfatcelluloser.
NO853688A NO853688L (no) 1984-12-19 1985-09-20 Fremgangsmaate til delignifisering av sulfatcelluloser.
DE8585112163T DE3562496D1 (en) 1984-12-19 1985-09-25 Process for delignifying sulphate pulp
EP85112163A EP0185858B1 (de) 1984-12-19 1985-09-25 Verfahren zur Delignifizierung von Sulfatzellstoffen
AT85112163T ATE33998T1 (de) 1984-12-19 1985-09-25 Verfahren zur delignifizierung von sulfatzellstoffen.
JP60281267A JPS61146894A (ja) 1984-12-19 1985-12-16 アルカリ性又は中性条件下で製造したパルプの２工程式脱リグニン化法

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
DE3446301A1 true DE3446301A1 (de) 1986-06-19

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 After (1)

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

Country Status (6)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0863251A1 (en) * 1997-03-04 1998-09-09 Oji Paper Co., Ltd. Process for producing bleached pulp
US5919238A (en) * 1998-03-04 1999-07-06 Ford Global Technologies, Inc. Method for aligning a vehicle suspension

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10243028B2 (en) 2014-04-08 2019-03-26 Panasonic Intellectual Property Management Co., Ltd. Organic electroluminescent element and lighting device with buffer layer

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 (en) * 1981-09-04 1984-01-09 Weyerhaeuser Co METHOD FOR TREATING PULP WITH MULTIPLE OXYGEN LEVELS.
DE3207157C1 (de) * 1982-02-27 1983-06-09 Degussa Ag, 6000 Frankfurt Verfahren zur Herstellung von halbgebleichten Zellstoffen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0863251A1 (en) * 1997-03-04 1998-09-09 Oji Paper Co., Ltd. Process for producing bleached pulp
US5919238A (en) * 1998-03-04 1999-07-06 Ford Global Technologies, Inc. Method for aligning a vehicle suspension

Also Published As

Publication number Publication date
DE3562496D1 (en) 1988-06-09
ATE33998T1 (de) 1988-05-15
FI853492A0 (fi) 1985-09-12
JPS61146894A (ja) 1986-07-04
EP0185858B1 (de) 1988-05-04
EP0185858A1 (de) 1986-07-02
FI853492L (fi) 1986-06-20
NO853688L (no) 1986-06-20

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Legal Events

Date Code Title Description
8130 Withdrawal