CA973661A - Press alkaline extraction of cellulosic pulp - Google Patents

Press alkaline extraction of cellulosic pulp

Info

Publication number
CA973661A
CA973661A CA152,905A CA152905A CA973661A CA 973661 A CA973661 A CA 973661A CA 152905 A CA152905 A CA 152905A CA 973661 A CA973661 A CA 973661A
Authority
CA
Canada
Prior art keywords
cellulosic pulp
alkaline extraction
press
press alkaline
extraction
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
CA152,905A
Other versions
CA152905S (en
Inventor
Norman Liebergott
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.)
Pulp and Paper Research Institute of Canada
Original Assignee
Pulp and Paper Research Institute of Canada
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 and Paper Research Institute of Canada filed Critical Pulp and Paper Research Institute of Canada
Priority to CA152,905A priority Critical patent/CA973661A/en
Priority to DE19732347398 priority patent/DE2347398C3/en
Priority to US399331A priority patent/US3874992A/en
Priority to NO3724/73A priority patent/NO141617C/en
Priority to SE7313168A priority patent/SE405488B/en
Priority to AR250290A priority patent/AR201116A1/en
Priority to FR7334891A priority patent/FR2201369B1/fr
Priority to BR7566/73A priority patent/BR7307566D0/en
Priority to JP48110105A priority patent/JPS5214326B2/ja
Priority to FI3043/73A priority patent/FI63793C/en
Application granted granted Critical
Publication of CA973661A publication Critical patent/CA973661A/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
    • D21C9/1026—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)
CA152,905A 1972-09-29 1972-09-29 Press alkaline extraction of cellulosic pulp Expired CA973661A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
CA152,905A CA973661A (en) 1972-09-29 1972-09-29 Press alkaline extraction of cellulosic pulp
DE19732347398 DE2347398C3 (en) 1972-09-29 1973-09-20 Process for the alkali extraction of cellulosic pulp
US399331A US3874992A (en) 1972-09-29 1973-09-20 Press alkaline extraction of cellulosic pulp
NO3724/73A NO141617C (en) 1972-09-29 1973-09-21 PROCEDURE FOR ALKALIC EXTRACTION OF CELLULOSIC PREPARATION OF BLACHEMAN
SE7313168A SE405488B (en) 1972-09-29 1973-09-27 PROCEDURE FOR ALKALI EXTRACTION OF CELLULOSIZED PULP
AR250290A AR201116A1 (en) 1972-09-29 1973-09-28 PROCEDURE FOR THE ALKALINE EXTRACTION OF A QUALITY PRE-TREATED PULP TO MAKE PAPER
FR7334891A FR2201369B1 (en) 1972-09-29 1973-09-28
BR7566/73A BR7307566D0 (en) 1972-09-29 1973-09-28 PROCESS FOR ALKALINE EXTRACTION OF A TYPE OF PRE-TREATED PULP FOR PAPER MANUFACTURE
JP48110105A JPS5214326B2 (en) 1972-09-29 1973-09-28
FI3043/73A FI63793C (en) 1972-09-29 1973-09-28 ALKALIPRESSNING AV CELLULOSAMASSA

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
CA973661A true CA973661A (en) 1975-09-02

Family

ID=4094565

Family Applications (1)

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

Country Status (9)

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

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE415581B (en) * 1977-04-18 1980-10-13 Mo Och Domsjoe Ab PROCEDURE FOR PEROCID WHITING OF HOG REPLACEMENT MASS
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
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
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
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
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
US5188708A (en) * 1989-02-15 1993-02-23 Union Camp Patent Holding, Inc. Process for high consistency oxygen delignification followed by ozone relignification
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 (en) * 1990-05-04 1992-03-25 Poeyry Jaakko & Co Oy FOERFARANDE FOER RENING OCH AOTERFOERING AV CELLULOSAFABRIKERS BLEKERIAVATTEN.
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
BR0012204A (en) * 1999-07-02 2002-07-30 Edward Mendell Company Process for producing microcrystalline cellulose and composition comprising the same

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 (en) * 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
AR201116A1 (en) 1975-02-14
NO141617B (en) 1980-01-02
FR2201369A1 (en) 1974-04-26
BR7307566D0 (en) 1974-09-05
NO141617C (en) 1980-04-09
DE2347398B2 (en) 1977-01-13
FI63793B (en) 1983-04-29
US3874992A (en) 1975-04-01
JPS5214326B2 (en) 1977-04-21
JPS4971202A (en) 1974-07-10
FR2201369B1 (en) 1977-03-11
FI63793C (en) 1983-08-10
DE2347398A1 (en) 1974-04-04
SE405488B (en) 1978-12-11

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