FR2546545B1 - THERMOMECHANICAL DIGESTION PROCESS USING WHITENERS - Google Patents

THERMOMECHANICAL DIGESTION PROCESS USING WHITENERS

Info

Publication number
FR2546545B1
FR2546545B1 FR8404875A FR8404875A FR2546545B1 FR 2546545 B1 FR2546545 B1 FR 2546545B1 FR 8404875 A FR8404875 A FR 8404875A FR 8404875 A FR8404875 A FR 8404875A FR 2546545 B1 FR2546545 B1 FR 2546545B1
Authority
FR
France
Prior art keywords
whiteners
digestion process
thermomechanical digestion
thermomechanical
digestion
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
FR8404875A
Other languages
French (fr)
Other versions
FR2546545A1 (en
Inventor
Eduardo Joel Villavicencio
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.)
Process Evaluation and Development Corp
Original Assignee
Process Evaluation and Development Corp
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 Process Evaluation and Development Corp filed Critical Process Evaluation and Development Corp
Publication of FR2546545A1 publication Critical patent/FR2546545A1/en
Application granted granted Critical
Publication of FR2546545B1 publication Critical patent/FR2546545B1/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • D21B1/36—Explosive disintegration by sudden pressure reduction
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/14—Disintegrating in mills
    • D21B1/16—Disintegrating in mills in the presence of chemical agents
    • 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

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Paper (AREA)
FR8404875A 1983-05-23 1984-03-28 THERMOMECHANICAL DIGESTION PROCESS USING WHITENERS Expired FR2546545B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US49689283A 1983-05-23 1983-05-23

Publications (2)

Publication Number Publication Date
FR2546545A1 FR2546545A1 (en) 1984-11-30
FR2546545B1 true FR2546545B1 (en) 1986-10-24

Family

ID=23974632

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8404875A Expired FR2546545B1 (en) 1983-05-23 1984-03-28 THERMOMECHANICAL DIGESTION PROCESS USING WHITENERS

Country Status (9)

Country Link
JP (1) JPS59216994A (en)
AU (1) AU570673B2 (en)
BR (1) BR8305924A (en)
EG (1) EG16660A (en)
ES (1) ES531729A0 (en)
FR (1) FR2546545B1 (en)
IN (1) IN160270B (en)
PH (1) PH22203A (en)
ZA (1) ZA837927B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3610940A1 (en) * 1986-03-04 1987-09-10 Escher Wyss Gmbh HIGH TEMPERATURE HIGH CONSISTENCY FAST WHITE
FR2701274B1 (en) * 1993-02-09 1995-03-31 Air Liquide Process for the manufacture of bleached chemical thermal mechanical pulp (CTMP).
JP2005290331A (en) 2004-04-06 2005-10-20 Shinto Fine Co Ltd Antiallergenic composition and method for deactivating allergen

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB818828A (en) * 1956-07-10 1959-08-26 Scott Paper Co Process for bleaching cellulosic pulp
FI42161C (en) * 1963-04-03 1970-05-11 Defibrator Ab A method for the continuous production of mechanical and semi-chemical pulps from a lignocellulosic material
FR1401560A (en) * 1964-05-29 1965-06-04 Defibrator Ab Process for manufacturing cellulose pulp from chips in a shredder device
US3467574A (en) * 1966-06-14 1969-09-16 Crown Zellerbach Corp Refiner bleaching of high yield pulps
FI61215B (en) * 1976-11-23 1982-02-26 Defibrator Ab SAFETY RANGE OF CONTAINER FRAMSTAELLA LIGNOCELLULOSAHALTIGA FIBERMATERIAL
SE420329C (en) * 1978-02-16 1984-07-10 Mo Och Domsjoe Ab PROCEDURE FOR THE PREPARATION OF GRINDING PAPER
SE422818B (en) * 1978-03-31 1982-03-29 Modo Chemetrics Ab PROCEDURE FOR PROCESSING ALLULOSAMASSA BY BLACKING OR EXTRACTING
US4363697A (en) * 1979-12-03 1982-12-14 The Black Clawson Company Method for medium consistency oxygen delignification of pulp
US4347101A (en) * 1980-11-24 1982-08-31 W. R. Grace & Co. Process for producing newsprint
US4431480A (en) * 1981-10-27 1984-02-14 The Black Clawson Company Method and apparatus for controlled addition of alkaline chemicals to an oxygen delignification reaction

Also Published As

Publication number Publication date
AU570673B2 (en) 1988-03-24
ZA837927B (en) 1985-01-30
IN160270B (en) 1987-07-04
ES8503757A1 (en) 1985-03-01
BR8305924A (en) 1985-02-20
ES531729A0 (en) 1985-03-01
JPS59216994A (en) 1984-12-07
FR2546545A1 (en) 1984-11-30
EG16660A (en) 1991-12-30
AU2540184A (en) 1984-11-29
PH22203A (en) 1988-06-28

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Legal Events

Date Code Title Description
ST Notification of lapse