SE405488B - Forfarande vid alkaliextraktion av cellulosahaltig massa - Google Patents

Forfarande vid alkaliextraktion av cellulosahaltig massa

Info

Publication number
SE405488B
SE405488B SE7313168A SE7313168A SE405488B SE 405488 B SE405488 B SE 405488B SE 7313168 A SE7313168 A SE 7313168A SE 7313168 A SE7313168 A SE 7313168A SE 405488 B SE405488 B SE 405488B
Authority
SE
Sweden
Prior art keywords
cellulosized
pulp
procedure
alkali extraction
alkali
Prior art date
Application number
SE7313168A
Other languages
English (en)
Swedish (sv)
Inventor
N Liebergott
Original Assignee
Pulp Paper Res Inst
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 Pulp Paper Res Inst filed Critical Pulp Paper Res Inst
Publication of SE405488B publication Critical patent/SE405488B/xx

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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Medicines Containing Plant Substances (AREA)
SE7313168A 1972-09-29 1973-09-27 Forfarande vid alkaliextraktion av cellulosahaltig massa SE405488B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA152,905A CA973661A (en) 1972-09-29 1972-09-29 Press alkaline extraction of cellulosic pulp

Publications (1)

Publication Number Publication Date
SE405488B true SE405488B (sv) 1978-12-11

Family

ID=4094565

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7313168A SE405488B (sv) 1972-09-29 1973-09-27 Forfarande vid alkaliextraktion av cellulosahaltig massa

Country Status (9)

Country Link
US (1) US3874992A (Direct)
JP (1) JPS5214326B2 (Direct)
AR (1) AR201116A1 (Direct)
BR (1) BR7307566D0 (Direct)
CA (1) CA973661A (Direct)
FI (1) FI63793C (Direct)
FR (1) FR2201369B1 (Direct)
NO (1) NO141617C (Direct)
SE (1) SE405488B (Direct)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE415581B (sv) * 1977-04-18 1980-10-13 Mo Och Domsjoe Ab Forfarande for perocidblekning av hogutbytesmassa
US4238281A (en) * 1979-04-30 1980-12-09 Canadian International Paper Company Simplified bleaching process
US4806203A (en) * 1985-02-14 1989-02-21 Elton Edward F Method for alkaline delignification of lignocellulosic fibrous material at a consistency which is raised during reaction
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
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
US5525195A (en) * 1989-02-15 1996-06-11 Union Camp Patent Holding, Inc. Process for high consistency delignification using a low consistency alkali pretreatment
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
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
US5188708A (en) * 1989-02-15 1993-02-23 Union Camp Patent Holding, Inc. Process for high consistency oxygen delignification followed by ozone relignification
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
US5011572A (en) * 1989-05-19 1991-04-30 Fmc Corporation Two stage process for the oxygen delignification of lignocellulosic fibers with peroxide reinforcement in the first stage
FI85293C (sv) * 1990-05-04 1992-03-25 Poeyry Jaakko & Co Oy Förfarande för rening och återföring av cellulosafabrikers blekeriavva tten
US5164043A (en) * 1990-05-17 1992-11-17 Union Camp Patent Holding, Inc. Environmentally improved process for bleaching lignocellulosic materials with ozone
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
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
US5728264A (en) * 1995-10-25 1998-03-17 Union Camp Patent Holding, Inc. Avoidance of salt scaling by acidic pulp washing process
EP1226179A4 (en) * 1999-07-02 2002-10-29 Mendell Co Inc Edward Treatment of pulp to produce microcrystalline cellulose

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2882965A (en) * 1955-02-23 1959-04-21 Columbia Cellulose Company Ltd High viscosity, high percentage alpha cellulose from sulfite pulp
SE314286B (Direct) * 1964-08-07 1969-09-01 Pulp Paper Res Inst
CA834629A (en) * 1966-09-30 1970-02-17 Amiel W. Brinkley, Jr. Rapid high consistency bleaching of pulp
US3632469A (en) * 1969-06-05 1972-01-04 Ethyl Corp Process for the manufacture of dissolving grade pulp

Also Published As

Publication number Publication date
CA973661A (en) 1975-09-02
DE2347398A1 (de) 1974-04-04
FR2201369B1 (Direct) 1977-03-11
NO141617B (no) 1980-01-02
AR201116A1 (es) 1975-02-14
FI63793B (fi) 1983-04-29
FR2201369A1 (Direct) 1974-04-26
BR7307566D0 (pt) 1974-09-05
DE2347398B2 (de) 1977-01-13
JPS5214326B2 (Direct) 1977-04-21
FI63793C (fi) 1983-08-10
NO141617C (no) 1980-04-09
US3874992A (en) 1975-04-01
JPS4971202A (Direct) 1974-07-10

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