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NO951190L - Improved bleaching of high consistency lignocellulosic pulp - Google Patents

Improved bleaching of high consistency lignocellulosic pulp

Info

Publication number
NO951190L
NO951190L NO951190A NO951190A NO951190L NO 951190 L NO951190 L NO 951190L NO 951190 A NO951190 A NO 951190A NO 951190 A NO951190 A NO 951190A NO 951190 L NO951190 L NO 951190L
Authority
NO
Norway
Prior art keywords
pulp
high consistency
brightness
lignocellulosic pulp
improved bleaching
Prior art date
Application number
NO951190A
Other languages
Norwegian (no)
Other versions
NO951190D0 (en
Inventor
Thomas P Gandek
Original Assignee
Union Camp Patent Holding
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 Union Camp Patent Holding filed Critical Union Camp Patent Holding
Publication of NO951190L publication Critical patent/NO951190L/en
Publication of NO951190D0 publication Critical patent/NO951190D0/en

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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
    • 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
    • D21C9/001—Modification of pulp properties
    • D21C9/007—Modification of pulp properties by mechanical or physical means

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Abstract

Det blir beskrevet en fremgangsmåte som har øket selektivitet for bleking av llgnocellulosemasse med en høykonslstens fra en første GE-lyshet til en andre, høyere GE-lyshet som omfatter trinnene (a) tørrfl- brerlng av den høykonslstense massen med den første GE- lyshet til et spesifikt overflateareal på minst omkring 90 m2/kg; og (b) bringe l kontakt den tørrflb- rerte massen med et gassformig blekemlddel for å danne en bleket masse med en andre høyere GE-lyshet. Det blir også beskrevet en bleket llgnocellulosemasse fremstilt ved fremgangsmåten.A method is described which has increased selectivity for bleaching lignocellulosic pulp with a high consistency from a first GE brightness to a second, higher GE brightness comprising the steps (a) of drying the high consistency pulp with the first GE brightness to a specific surface area of at least about 90 m2 / kg; and (b) contacting the dry-pulped pulp with a gaseous bleaching agent to form a bleached pulp with a second higher GE brightness. Also described is a bleached cellulose pulp prepared by the process.

NO951190A 1992-10-01 1995-03-28 Improved bleaching of high consistency lignocellulosic pulp NO951190D0 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US95500192A 1992-10-01 1992-10-01
US2754493A 1993-03-05 1993-03-05
PCT/US1993/009230 WO1994008087A1 (en) 1992-10-01 1993-09-28 Improved bleaching of high consistency lignocellulosic pulp

Publications (2)

Publication Number Publication Date
NO951190L true NO951190L (en) 1995-03-28
NO951190D0 NO951190D0 (en) 1995-03-28

Family

ID=26702594

Family Applications (1)

Application Number Title Priority Date Filing Date
NO951190A NO951190D0 (en) 1992-10-01 1995-03-28 Improved bleaching of high consistency lignocellulosic pulp

Country Status (14)

Country Link
EP (1) EP0663030A4 (en)
JP (1) JPH08502327A (en)
KR (1) KR950703683A (en)
CN (1) CN1104274A (en)
AU (1) AU671159B2 (en)
BR (1) BR9307135A (en)
CA (1) CA2144433A1 (en)
FI (1) FI951533A0 (en)
ID (1) ID925B (en)
MY (1) MY110586A (en)
NO (1) NO951190D0 (en)
NZ (1) NZ256783A (en)
RU (1) RU2115780C1 (en)
WO (1) WO1994008087A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0770157A4 (en) * 1994-07-14 1998-01-07 Union Camp Patent Holding IMPROVED BLEACHING FROM HIGHLY CONSISTENT LIGNOCELLULOSIC PULP
US5667974A (en) * 1995-06-07 1997-09-16 Abbott Laboratories Method for detecting nucleic acid sequences using competitive amplification
CN100345955C (en) * 2006-02-25 2007-10-31 武汉市神虫液蜂蜜酒业有限公司 Method for brewing pure honeymead
JP7066684B2 (en) * 2016-09-14 2022-05-13 エフピーイノベイションズ How to convert high-concentration pulp fibers into pre-dispersed semi-dried and dried fibrous materials

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA902859A (en) * 1969-11-26 1972-06-20 Pulp And Paper Research Institute Of Canada Chemical reaction between a solid and a gas
NO131996C (en) * 1973-10-04 1975-09-03 Papirind Forskningsinst
NO142091C (en) * 1977-10-17 1980-06-25 Myrens Verksted As PROCEDURE FOR OZONE TREATMENT OF REFINO MECHANICAL AND THERMOMECHANICAL MASS.
SE419603B (en) * 1979-11-27 1981-08-17 Kamyr Ab APPLICATION FOR MIXING TREATMENT AGENTS IN SUSPENSIONS
AU638017B2 (en) * 1990-05-17 1993-06-17 Union Camp Corporation Environmentally improved process for bleaching lignocellulosic materials
EP0492040A1 (en) * 1990-12-21 1992-07-01 Kamyr, Inc. Tumbling ozone reactor for paper pulp

Also Published As

Publication number Publication date
CN1104274A (en) 1995-06-28
FI951533A7 (en) 1995-03-31
BR9307135A (en) 1999-07-27
MY110586A (en) 1998-08-29
NZ256783A (en) 1996-08-27
EP0663030A4 (en) 1995-12-06
FI951533L (en) 1995-03-31
RU2115780C1 (en) 1998-07-20
JPH08502327A (en) 1996-03-12
EP0663030A1 (en) 1995-07-19
FI951533A0 (en) 1995-03-31
CA2144433A1 (en) 1994-04-14
NO951190D0 (en) 1995-03-28
RU95110663A (en) 1997-04-10
AU5166593A (en) 1994-04-26
ID925B (en) 1996-09-16
AU671159B2 (en) 1996-08-15
WO1994008087A1 (en) 1994-04-14
KR950703683A (en) 1995-09-20

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