ZA837927B - Thermomechanical digestion process using bleachants - Google Patents

Thermomechanical digestion process using bleachants

Info

Publication number
ZA837927B
ZA837927B ZA837927A ZA837927A ZA837927B ZA 837927 B ZA837927 B ZA 837927B ZA 837927 A ZA837927 A ZA 837927A ZA 837927 A ZA837927 A ZA 837927A ZA 837927 B ZA837927 B ZA 837927B
Authority
ZA
South Africa
Prior art keywords
bleachants
digestion process
thermomechanical digestion
thermomechanical
digestion
Prior art date
Application number
ZA837927A
Inventor
Eduardo Joel Villavicencio
Original Assignee
Process Evaluation Devel
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 Devel filed Critical Process Evaluation Devel
Publication of ZA837927B publication Critical patent/ZA837927B/en

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
ZA837927A 1983-05-23 1983-10-25 Thermomechanical digestion process using bleachants ZA837927B (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ZA837927B true ZA837927B (en) 1985-01-30

Family

ID=23974632

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA837927A ZA837927B (en) 1983-05-23 1983-10-25 Thermomechanical digestion process using bleachants

Country Status (9)

Country Link
JP (1) JPS59216994A (en)
AU (1) AU570673B2 (en)
BR (1) BR8305924A (en)
EG (1) EG16660A (en)
ES (1) ES8503757A1 (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
DE1253031B (en) * 1963-04-03 1967-10-26 Defibrator Ab Process for the production of mechanical and / or chemomechanical pulp from lignocellulose-containing 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
GB1590704A (en) * 1976-11-23 1981-06-10 Defibrator Ab Method end device for the continuous production of pulp from fibrous lignocellulosic materials
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
PH22203A (en) 1988-06-28
AU570673B2 (en) 1988-03-24
AU2540184A (en) 1984-11-29
JPS59216994A (en) 1984-12-07
FR2546545B1 (en) 1986-10-24
IN160270B (en) 1987-07-04
FR2546545A1 (en) 1984-11-30
ES531729A0 (en) 1985-03-01
EG16660A (en) 1991-12-30
BR8305924A (en) 1985-02-20
ES8503757A1 (en) 1985-03-01

Similar Documents

Publication Publication Date Title
GB8331793D0 (en) Process
GB8311677D0 (en) Extraction process
GB8409518D0 (en) Well treating process
EP0141585A3 (en) Demulsifying process
GB2148739B (en) Extraction process
GB8429408D0 (en) Process
DE3460003D1 (en) Process for preparing fluorophthalic anhydrides
PH25619A (en) Digestion process
GB8333729D0 (en) Fermentation process
EG16660A (en) Thermomechanical digestion process using bleachants
GB8416623D0 (en) Reforming process
GB8423197D0 (en) Fermentation process
ZA837926B (en) Digestion process
GB8320222D0 (en) Process ii
HUT35632A (en) Process for preparing 6-demethyl-6-deoxy-6-methylene-5-exytetracycline and 11a-chloro-derivative thereof
PT77944B (en) Process
YU100388A (en) Process for obtaining biostimulative digestion agent
GB8717280D0 (en) Digestion method
GB8329086D0 (en) Process iv
GB8308083D0 (en) Pulping process
GB8314482D0 (en) Process
GB8332521D0 (en) Ologimerisation process
GB8321339D0 (en) Process
GB8328414D0 (en) Process
GB8314483D0 (en) Process