AU607026B2 - Process for producing semibleached kraft pulp - Google Patents

Process for producing semibleached kraft pulp Download PDF

Info

Publication number
AU607026B2
AU607026B2 AU26798/88A AU2679888A AU607026B2 AU 607026 B2 AU607026 B2 AU 607026B2 AU 26798/88 A AU26798/88 A AU 26798/88A AU 2679888 A AU2679888 A AU 2679888A AU 607026 B2 AU607026 B2 AU 607026B2
Authority
AU
Australia
Prior art keywords
delignification
process according
pulp
carried out
kraft 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.)
Ceased
Application number
AU26798/88A
Other languages
English (en)
Other versions
AU2679888A (en
Inventor
Oswald Dr. Hemling
Jurgen Meier
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
Publication of AU2679888A publication Critical patent/AU2679888A/en
Application granted granted Critical
Publication of AU607026B2 publication Critical patent/AU607026B2/en
Anticipated expiration legal-status Critical
Ceased 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)
AU26798/88A 1988-01-28 1988-12-12 Process for producing semibleached kraft pulp Ceased AU607026B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3802401 1988-01-28
DE3802401A DE3802401A1 (de) 1988-01-28 1988-01-28 Verfahren zur herstellung von halbgebleichtem kraftzellstoff

Publications (2)

Publication Number Publication Date
AU2679888A AU2679888A (en) 1989-08-03
AU607026B2 true AU607026B2 (en) 1991-02-21

Family

ID=6346109

Family Applications (1)

Application Number Title Priority Date Filing Date
AU26798/88A Ceased AU607026B2 (en) 1988-01-28 1988-12-12 Process for producing semibleached kraft pulp

Country Status (9)

Country Link
EP (1) EP0325731A1 (de)
AU (1) AU607026B2 (de)
BR (1) BR8900259A (de)
DE (1) DE3802401A1 (de)
FI (1) FI890100A (de)
NO (1) NO885525L (de)
NZ (1) NZ227748A (de)
PT (1) PT89533A (de)
ZA (1) ZA889289B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU616999B2 (en) * 1988-09-14 1991-11-14 Sunds Defibrator Industries Aktiebolag Method of making chemi-mechanical pulp from hardwood
AU651192B2 (en) * 1991-04-30 1994-07-14 Eka Nobel Ab Process for bleaching of lignocellulose-containing pulp

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4004364A1 (de) * 1990-02-13 1991-08-14 Sueddeutsche Kalkstickstoff Verfahren zur chlorfreien bleiche und delignifizierung von zellstoff
SE466060C (sv) 1990-02-13 1995-09-11 Moelnlycke Ab Absorberande kemitermomekanisk massa och framställning därav
US5607546A (en) * 1990-02-13 1997-03-04 Molnlycke Ab CTMP-process
NZ237019A (en) * 1990-02-19 1992-11-25 Amcor Ltd Bleaching paper pulp by initially treating with oxygen and/or hydrogen peroxide and subsequently treating with a bleaching agent without intervening washing steps
US6398908B1 (en) 1991-04-30 2002-06-04 Eka Nobel Ab Process for acid bleaching of lignocellulose-containing pulp with a magnesium compound
BE1005800A3 (fr) * 1992-05-22 1994-02-01 Solvay Interox Procede pour la delignification et le blanchiment d'une pate a papier chimique.
AU7243594A (en) * 1993-09-15 1995-04-03 Kamyr Inc. Eop stage for chlorine free bleaching
DE29911772U1 (de) 1999-07-06 1999-09-02 Tien, Dieter, 48527 Nordhorn Reinigungsgerät für glatte Flächen, insbesondere zum Putzen von Fenstern

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725194A (en) * 1967-06-20 1973-04-03 South Africa Pulp And Paper In Treatment of alkaline pulp with an acidic medium followed by oxygen bleaching and delignification
CA946107A (en) * 1970-05-11 1974-04-30 Ingmar Lassenius Process for bleaching cellulose-containing materials
US4459174A (en) * 1979-05-25 1984-07-10 Interbox (Societe Anonyme) Process for the delignification and bleaching of chemical and semi-chemical cellulosic pulps

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725194A (en) * 1967-06-20 1973-04-03 South Africa Pulp And Paper In Treatment of alkaline pulp with an acidic medium followed by oxygen bleaching and delignification
CA946107A (en) * 1970-05-11 1974-04-30 Ingmar Lassenius Process for bleaching cellulose-containing materials
US4459174A (en) * 1979-05-25 1984-07-10 Interbox (Societe Anonyme) Process for the delignification and bleaching of chemical and semi-chemical cellulosic pulps

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU616999B2 (en) * 1988-09-14 1991-11-14 Sunds Defibrator Industries Aktiebolag Method of making chemi-mechanical pulp from hardwood
AU651192B2 (en) * 1991-04-30 1994-07-14 Eka Nobel Ab Process for bleaching of lignocellulose-containing pulp

Also Published As

Publication number Publication date
ZA889289B (en) 1989-09-27
PT89533A (pt) 1989-10-04
DE3802401A1 (de) 1989-08-03
AU2679888A (en) 1989-08-03
NO885525L (no) 1989-07-31
FI890100A (fi) 1989-07-29
NZ227748A (en) 1990-04-26
NO885525D0 (no) 1988-12-13
BR8900259A (pt) 1989-09-19
EP0325731A1 (de) 1989-08-02
FI890100A0 (fi) 1989-01-09

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