CA1020305A - Delignification and bleaching of wood pulp with oxygen - Google Patents

Delignification and bleaching of wood pulp with oxygen

Info

Publication number
CA1020305A
CA1020305A CA213,832A CA213832A CA1020305A CA 1020305 A CA1020305 A CA 1020305A CA 213832 A CA213832 A CA 213832A CA 1020305 A CA1020305 A CA 1020305A
Authority
CA
Canada
Prior art keywords
delignification
bleaching
oxygen
wood pulp
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
CA213,832A
Other languages
English (en)
French (fr)
Other versions
CA213832S (en
Inventor
Richard B. Phillips
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.)
International Paper Co
Original Assignee
International Paper Co
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 International Paper Co filed Critical International Paper Co
Application granted granted Critical
Publication of CA1020305A publication Critical patent/CA1020305A/en
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
    • D21C9/1068—Bleaching ; Apparatus therefor with O2

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
CA213,832A 1974-11-06 1974-11-15 Delignification and bleaching of wood pulp with oxygen Expired CA1020305A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/521,376 US3951733A (en) 1974-11-06 1974-11-06 Delignification and bleaching of wood pulp with oxygen

Publications (1)

Publication Number Publication Date
CA1020305A true CA1020305A (en) 1977-11-08

Family

ID=24076505

Family Applications (1)

Application Number Title Priority Date Filing Date
CA213,832A Expired CA1020305A (en) 1974-11-06 1974-11-15 Delignification and bleaching of wood pulp with oxygen

Country Status (17)

Country Link
US (1) US3951733A (pt)
JP (1) JPS5857558B2 (pt)
AR (1) AR211099A1 (pt)
AU (1) AU497459B2 (pt)
BR (1) BR7503104A (pt)
CA (1) CA1020305A (pt)
DE (1) DE2525298A1 (pt)
FI (1) FI64407C (pt)
FR (1) FR2290533A2 (pt)
GB (1) GB1509568A (pt)
IT (1) IT1050554B (pt)
NO (1) NO147801C (pt)
PH (1) PH12114A (pt)
PL (1) PL101511B1 (pt)
SE (1) SE418202B (pt)
SU (1) SU694086A3 (pt)
ZA (1) ZA752583B (pt)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU591539A1 (ru) * 1975-10-03 1978-02-05 Всесоюзное научно-производственное объединение целлюлозно-бумажной промышленности Установка дл обработки лигноцеллюлозного материала
US4198266A (en) * 1977-10-12 1980-04-15 Airco, Inc. Oxygen delignification of wood pulp
SE421019B (sv) * 1980-08-26 1981-11-16 Kamyr Ab Forfarande for kemikaliereglering vid behandling av en substans, speciellt massa, med gas
DE3207157C1 (de) * 1982-02-27 1983-06-09 Degussa Ag, 6000 Frankfurt Verfahren zur Herstellung von halbgebleichten Zellstoffen
AU1730083A (en) * 1982-09-30 1984-04-05 Black Clawson Company, The Oxygen treatment of low connistancy pulp
SE451149B (sv) * 1983-01-26 1987-09-07 Mo Och Domsjoe Ab Apparatur for kontinuerlig behandling av vatteninnehallande lignocellulosamaterial med kveveoxid och syre
AU595842B2 (en) * 1985-11-15 1990-04-12 Canadian Liquid Air Ltd. Pulp bleaching
US5217574A (en) * 1989-02-15 1993-06-08 Union Camp Patent Holdings Inc. Process for oxygen delignifying high consistency pulp by removing and recycling pressate from alkaline pulp
US5409570A (en) * 1989-02-15 1995-04-25 Union Camp Patent Holding, Inc. Process for ozone bleaching of oxygen delignified pulp while conveying the pulp through a reaction zone
US5188708A (en) * 1989-02-15 1993-02-23 Union Camp Patent Holding, Inc. Process for high consistency oxygen delignification followed by ozone relignification
US5085734A (en) * 1989-02-15 1992-02-04 Union Camp Patent Holding, Inc. Methods of high consistency oxygen delignification using a low consistency alkali pretreatment
US5525195A (en) * 1989-02-15 1996-06-11 Union Camp Patent Holding, Inc. Process for high consistency delignification using a low consistency alkali pretreatment
US5173153A (en) * 1991-01-03 1992-12-22 Union Camp Patent Holding, Inc. Process for enhanced oxygen delignification using high consistency and a split alkali addition
US5246543A (en) * 1989-08-18 1993-09-21 Degussa Corporation Process for bleaching and delignification of lignocellulosic materials
AT393701B (de) * 1989-12-22 1991-12-10 Schmidding Wilh Gmbh & Co Verfahren zum bleichen von cellulosehaeltigen materialien sowie anlage zur durchfuehrung des verfahrens
US5164043A (en) * 1990-05-17 1992-11-17 Union Camp Patent Holding, Inc. Environmentally improved process for bleaching lignocellulosic materials with ozone
US5164044A (en) * 1990-05-17 1992-11-17 Union Camp Patent Holding, Inc. Environmentally improved process for bleaching lignocellulosic materials with ozone
US5690786A (en) * 1991-11-26 1997-11-25 Air Products And Chemicals Inc. Process for the treatment of pulp with oxygen and steam using ejectors
US5460696A (en) * 1993-08-12 1995-10-24 The Boc Group, Inc. Oxygen delignification method incorporating wood pulp mixing apparatus
US5554259A (en) * 1993-10-01 1996-09-10 Union Camp Patent Holdings, Inc. Reduction of salt scale precipitation by control of process stream Ph and salt concentration
DE69608910T2 (de) * 1995-12-07 2001-01-18 Beloit Technologies, Inc. Delignifizierung eines papierzellstoffs mittlerer konsistenz mittels sauerstoff
WO1997020983A1 (en) * 1995-12-07 1997-06-12 Beloit Technologies, Inc. Oxygen delignification of medium consistency pulp slurry
SE522161C2 (sv) * 1999-06-17 2004-01-20 Kvaerner Pulping Tech Förfarande och anordning för syrgasdelignifiering med förbättrad kappareduktion
US20050087315A1 (en) * 2003-10-28 2005-04-28 Donovan Joseph R. Low consistency oxygen delignification process
WO2015197917A1 (en) * 2014-06-23 2015-12-30 Metsä Fibre Oy Method of delignifying fibrous suspensions of alkaline cooking

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3832276A (en) * 1973-03-07 1974-08-27 Int Paper Co Delignification and bleaching of a cellulose pulp slurry with oxygen

Also Published As

Publication number Publication date
SE418202B (sv) 1981-05-11
PL101511B1 (pl) 1979-01-31
IT1050554B (it) 1981-03-20
FI64407C (fi) 1983-11-10
NO751475L (pt) 1976-05-07
US3951733A (en) 1976-04-20
BR7503104A (pt) 1976-08-10
AU8136375A (en) 1976-11-25
FR2290533A2 (fr) 1976-06-04
SE7504168L (sv) 1976-05-07
AU497459B2 (en) 1978-12-14
FI64407B (fi) 1983-07-29
FI751308A (pt) 1976-05-07
DE2525298A1 (de) 1976-05-13
AR211099A1 (es) 1977-10-31
PH12114A (en) 1978-11-02
SU694086A3 (ru) 1979-10-25
FR2290533B2 (pt) 1980-11-07
JPS5158501A (pt) 1976-05-21
JPS5857558B2 (ja) 1983-12-20
NO147801B (no) 1983-03-07
NO147801C (no) 1983-06-15
GB1509568A (en) 1978-05-04
ZA752583B (en) 1976-03-31

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