DE69304723D1 - Verfahren zur Delignifizierung von Zellstoffpulpe - Google Patents

Verfahren zur Delignifizierung von Zellstoffpulpe

Info

Publication number
DE69304723D1
DE69304723D1 DE69304723T DE69304723T DE69304723D1 DE 69304723 D1 DE69304723 D1 DE 69304723D1 DE 69304723 T DE69304723 T DE 69304723T DE 69304723 T DE69304723 T DE 69304723T DE 69304723 D1 DE69304723 D1 DE 69304723D1
Authority
DE
Germany
Prior art keywords
raw cellulose
delignification
pulp
treatment
cellulose
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 - Fee Related
Application number
DE69304723T
Other languages
English (en)
Other versions
DE69304723T2 (de
Inventor
Fausto Marzolini
Giulio Calmanti
Gianpiero Sacchi
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.)
MEDAVOX S.R.L., PERO, MAILAND/MILANO, IT
Original Assignee
Ausimont SpA
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 Ausimont SpA filed Critical Ausimont SpA
Publication of DE69304723D1 publication Critical patent/DE69304723D1/de
Application granted granted Critical
Publication of DE69304723T2 publication Critical patent/DE69304723T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Bakery Products And Manufacturing Methods Therefor (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • External Artificial Organs (AREA)
  • Compounds Of Unknown Constitution (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
DE69304723T 1992-01-31 1993-01-14 Verfahren zur Delignifizierung von Zellstoffpulpe Expired - Fee Related DE69304723T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI920192A IT1258844B (it) 1992-01-31 1992-01-31 Procedimento per la delignificazione di cellulosa grezza

Publications (2)

Publication Number Publication Date
DE69304723D1 true DE69304723D1 (de) 1996-10-24
DE69304723T2 DE69304723T2 (de) 1997-01-30

Family

ID=11361763

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69304723T Expired - Fee Related DE69304723T2 (de) 1992-01-31 1993-01-14 Verfahren zur Delignifizierung von Zellstoffpulpe

Country Status (15)

Country Link
US (1) US5587049A (de)
EP (1) EP0553649B1 (de)
JP (1) JP3325324B2 (de)
AT (1) ATE143073T1 (de)
CA (1) CA2088281A1 (de)
CZ (1) CZ282570B6 (de)
DE (1) DE69304723T2 (de)
FI (1) FI111386B (de)
HR (1) HRP930060B1 (de)
HU (1) HU216143B (de)
IT (1) IT1258844B (de)
NO (1) NO300511B1 (de)
PL (1) PL181248B1 (de)
SI (1) SI9300044B (de)
SK (1) SK281308B6 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19704054C2 (de) 1997-02-04 2000-08-10 Stockhausen Chem Fab Gmbh Verfahren zur Herstellung von Faserstoffen mit verbesserten Eigenschaften
BR0014767B1 (pt) * 1999-10-15 2010-12-28 produto de fibra, processo para fabricação de produto de fibra, produto de papel, composição alimentìcia e processo para fabricação de produto alimentìcio.
SE525064C2 (sv) * 2003-04-17 2004-11-23 Kvaerner Pulping Tech Metod för impregnering av flis med sur behandlingsvätska i samband med sulfatkokning av cellulosamassa
JP4967451B2 (ja) * 2006-05-17 2012-07-04 三菱瓦斯化学株式会社 漂白パルプの製造方法
JP4997905B2 (ja) * 2006-10-10 2012-08-15 三菱瓦斯化学株式会社 印刷用塗被紙の製造方法
CN115044178B (zh) * 2022-05-05 2023-05-26 保定盖尔医疗科技有限公司 一种香蒲草长纤维/聚乳酸复合材料及其制备方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4404061A (en) * 1981-08-17 1983-09-13 International Paper Company Bleaching of lignocellulosic materials with monopersulfuric acid or its salts
US4552616A (en) * 1982-10-20 1985-11-12 New Fibers International Inc. Pulping process pretreatment using a lower alkanolamine in the presence of ammonium hydroxide
US5004523A (en) * 1989-03-30 1991-04-02 The United States Of America As Represented By The Secretary Of Agriculture Delignification of lignocellulosic materials with monoperoxysulfuric acid
FI82079C (fi) * 1989-04-27 1993-05-11 Poeyry Jaakko & Co Oy Foerfarande och anordning foer kontinuerlig kokning av cellulosa
US5091054A (en) * 1989-08-18 1992-02-25 Degussa Corporation Process for bleaching and delignification of lignocellulosic
US5118389A (en) * 1990-07-06 1992-06-02 Ici Canada Inc. Two-stage peroxide bleaching process using different amounts of peroxide on different portions of mechanical pulp

Also Published As

Publication number Publication date
ATE143073T1 (de) 1996-10-15
SI9300044B (en) 2001-02-28
NO930307L (no) 1993-08-02
PL181248B1 (pl) 2001-06-29
CA2088281A1 (en) 1993-08-01
IT1258844B (it) 1996-02-29
FI930412A (fi) 1993-08-01
ITMI920192A0 (it) 1992-01-31
EP0553649A1 (de) 1993-08-04
JPH05247866A (ja) 1993-09-24
ITMI920192A1 (it) 1993-07-31
SK4793A3 (en) 1993-09-09
HRP930060B1 (en) 1999-06-30
NO300511B1 (no) 1997-06-09
NO930307D0 (no) 1993-01-29
JP3325324B2 (ja) 2002-09-17
FI111386B (fi) 2003-07-15
DE69304723T2 (de) 1997-01-30
CZ282570B6 (cs) 1997-08-13
CZ10893A3 (en) 1994-02-16
SI9300044A (en) 1993-09-30
HU9300246D0 (en) 1993-09-28
EP0553649B1 (de) 1996-09-18
HRP930060A2 (en) 1994-08-31
FI930412A0 (fi) 1993-01-29
HUT67451A (en) 1995-04-28
US5587049A (en) 1996-12-24
PL297562A1 (en) 1993-08-23
HU216143B (hu) 1999-04-28
SK281308B6 (sk) 2001-02-12

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: MEDAVOX S.R.L., PERO, MAILAND/MILANO, IT

8339 Ceased/non-payment of the annual fee