BR7502958A - Processo para a polpacao continua de material ligneo-celulosico - Google Patents

Processo para a polpacao continua de material ligneo-celulosico

Info

Publication number
BR7502958A
BR7502958A BR3763/75A BR7503763A BR7502958A BR 7502958 A BR7502958 A BR 7502958A BR 3763/75 A BR3763/75 A BR 3763/75A BR 7503763 A BR7503763 A BR 7503763A BR 7502958 A BR7502958 A BR 7502958A
Authority
BR
Brazil
Prior art keywords
ligneo
pulpation
continuous
cellulosic material
cellulosic
Prior art date
Application number
BR3763/75A
Other languages
English (en)
Inventor
N Viktormannbro
Original Assignee
Skogsaegarnas Ind Ab
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 Skogsaegarnas Ind Ab filed Critical Skogsaegarnas Ind Ab
Publication of BR7502958A publication Critical patent/BR7502958A/pt

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
    • D21C9/1026—Other features in bleaching processes
    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
BR3763/75A 1974-05-16 1975-05-14 Processo para a polpacao continua de material ligneo-celulosico BR7502958A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7406537A SE394466C (sv) 1974-05-16 1974-05-16 Sett vid kontinuerlig alkalisk delignifiering av lignocellulosamaterial i tva eller flera steg, varav det sista med syrgas

Publications (1)

Publication Number Publication Date
BR7502958A true BR7502958A (pt) 1976-03-23

Family

ID=20321136

Family Applications (1)

Application Number Title Priority Date Filing Date
BR3763/75A BR7502958A (pt) 1974-05-16 1975-05-14 Processo para a polpacao continua de material ligneo-celulosico

Country Status (6)

Country Link
US (1) US4155806A (pt)
JP (1) JPS6012477B2 (pt)
BR (1) BR7502958A (pt)
CA (1) CA1035104A (pt)
FI (1) FI61925C (pt)
SE (1) SE394466C (pt)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4274913A (en) * 1978-05-23 1981-06-23 Toyo Pulp Co., Ltd. Process for producing alkali pulp
SE412771C (sv) * 1978-07-27 1981-07-13 Obbola Linerboard Ab Sett vid satsvis kokning av cellulosamaterial for att tillvarata verme- och terpentininnehall i blasanga
US4436586A (en) 1982-01-22 1984-03-13 Kamyr, Inc. Method of producing kraft pulp using an acid prehydrolysis and pre-extraction
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
US5472572A (en) * 1990-10-26 1995-12-05 Union Camp Patent Holding, Inc. Reactor for bleaching high consistency pulp with ozone
US5181989A (en) * 1990-10-26 1993-01-26 Union Camp Patent Holdings, Inc. Reactor for bleaching high consistency pulp with ozone
US5525195A (en) * 1989-02-15 1996-06-11 Union Camp Patent Holding, Inc. Process for high consistency delignification using a low consistency alkali pretreatment
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
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
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
US5211811A (en) * 1989-02-15 1993-05-18 Union Camp Patent Holding, Inc. Process for high consistency oxygen delignification of alkaline treated pulp followed by ozone delignification
US5188708A (en) * 1989-02-15 1993-02-23 Union Camp Patent Holding, Inc. Process for high consistency oxygen delignification followed by ozone relignification
US5053108A (en) * 1989-06-28 1991-10-01 Kamyr Ab High sulfidity cook for paper pulp using black liquor sulfonization of steamed chips
US5441603A (en) * 1990-05-17 1995-08-15 Union Camp Patent Holding, Inc. Method for chelation of pulp prior to ozone delignification
US5164044A (en) * 1990-05-17 1992-11-17 Union Camp Patent Holding, Inc. Environmentally improved process for bleaching lignocellulosic materials with ozone
US5164043A (en) * 1990-05-17 1992-11-17 Union Camp Patent Holding, Inc. Environmentally improved process for bleaching lignocellulosic materials with ozone
US5174861A (en) * 1990-10-26 1992-12-29 Union Camp Patent Holdings, Inc. Method of bleaching high consistency pulp with ozone
US5520783A (en) * 1990-10-26 1996-05-28 Union Camp Patent Holding, Inc. Apparatus for bleaching high consistency pulp with ozone
DE69221385T2 (de) * 1991-05-24 1997-12-11 Union Camp Patent Holding Zweistufiger Reaktor zum Bleichen von Zellstoff und Verfahren zum Bleichen mit Ozon
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
US5736004A (en) * 1995-03-03 1998-04-07 Union Camp Patent Holding, Inc. Control scheme for rapid pulp delignification and bleaching
US5672247A (en) * 1995-03-03 1997-09-30 Union Camp Patent Holding, Inc. Control scheme for rapid pulp delignification and bleaching
US5728265A (en) * 1995-06-12 1998-03-17 Henkel Corporation Process for enhancing white liquor penetration into wood chips by contacting the chips with a mixture of the white liquor and a polymethylalkyl siloxane
US7815876B2 (en) 2006-11-03 2010-10-19 Olson David A Reactor pump for catalyzed hydrolytic splitting of cellulose
US7815741B2 (en) 2006-11-03 2010-10-19 Olson David A Reactor pump for catalyzed hydrolytic splitting of cellulose
US20110281298A1 (en) * 2010-05-11 2011-11-17 Andritz Inc. Method and apparatus to extracted and reduce dissolved hemi-cellulosic solids in biomass following pre-hydrolysis
SE539501C2 (sv) * 2014-10-31 2017-10-03 Valmet Oy Method and arrangement for discharge dilution

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB945957A (en) * 1960-02-08 1964-01-08 Ass Pulp & Paper Mills Continuous pulping process
US3413189A (en) * 1964-01-29 1968-11-26 Kamyr Ab Method of performing hydrolysis and alkalic digestion of cellulosic fiber material with prevention of lignin precipitation
US3679543A (en) * 1970-08-18 1972-07-25 Calgon Corp Controlling the cooking process in pulp digestion by differential conductivity measurements
SE360128C (sv) * 1970-08-25 1983-10-31 Mo Och Domsjoe Ab Sett att bleka cellulosamassa med en syreinnehallande gas i nervaro av alkali
US3830688A (en) * 1970-10-23 1974-08-20 Skogsaegarnas Ind Ab Method of reducing the discharge of waste products from pulp mills
SE373397C (sv) * 1972-03-30 1984-02-06 Mo Och Domsjoe Ab Sett att forbettra blekningsforloppet vid bleknig av cellulosamassa med en syre innehallande gas
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
JPS5129501A (en) 1976-03-12
US4155806A (en) 1979-05-22
SE394466B (sv) 1977-06-27
CA1035104A (en) 1978-07-25
SE394466C (sv) 1986-06-23
FI61925B (fi) 1982-06-30
JPS6012477B2 (ja) 1985-04-01
FI61925C (fi) 1982-10-11
SE7406537L (sv) 1975-11-17
FI751443A (pt) 1975-11-17

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