CA1080406A - Procede de blanchiment de pate par hydrolyse faisant appel au chlore en quantites fortement reduites - Google Patents

Procede de blanchiment de pate par hydrolyse faisant appel au chlore en quantites fortement reduites

Info

Publication number
CA1080406A
CA1080406A CA245,088A CA245088A CA1080406A CA 1080406 A CA1080406 A CA 1080406A CA 245088 A CA245088 A CA 245088A CA 1080406 A CA1080406 A CA 1080406A
Authority
CA
Canada
Prior art keywords
pulp
peroxide
stage
bleaching
hydrolysis
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
CA245,088A
Other languages
English (en)
Inventor
Horst Kruger
Werner Traser
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.)
Evonik Operations GmbH
Original Assignee
Deutsche Gold und Silber Scheideanstalt
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 Deutsche Gold und Silber Scheideanstalt filed Critical Deutsche Gold und Silber Scheideanstalt
Application granted granted Critical
Publication of CA1080406A publication Critical patent/CA1080406A/fr
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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Cosmetics (AREA)
CA245,088A 1975-08-30 1976-02-05 Procede de blanchiment de pate par hydrolyse faisant appel au chlore en quantites fortement reduites Expired CA1080406A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2538673A DE2538673C2 (de) 1975-08-30 1975-08-30 Bleichaufschluß von Zellstoff mit erheblich reduziertem Chloreinsatz

Publications (1)

Publication Number Publication Date
CA1080406A true CA1080406A (fr) 1980-07-01

Family

ID=5955230

Family Applications (1)

Application Number Title Priority Date Filing Date
CA245,088A Expired CA1080406A (fr) 1975-08-30 1976-02-05 Procede de blanchiment de pate par hydrolyse faisant appel au chlore en quantites fortement reduites

Country Status (17)

Country Link
AR (1) AR221678A1 (fr)
AT (1) AT340765B (fr)
BE (1) BE836462R (fr)
BR (1) BR7603006A (fr)
CA (1) CA1080406A (fr)
CH (1) CH620002A5 (fr)
DE (1) DE2538673C2 (fr)
ES (1) ES443318A1 (fr)
FI (1) FI62869C (fr)
FR (1) FR2322235A1 (fr)
GB (1) GB1544216A (fr)
IT (1) IT1055792B (fr)
NL (1) NL7513942A (fr)
NO (1) NO145344B (fr)
SE (1) SE7602842L (fr)
YU (1) YU37370B (fr)
ZA (1) ZA757822B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5143580A (en) * 1990-04-23 1992-09-01 Eka Nobel Ab Process for reducing the amount of halogenated organic compounds in spent liquor from a peroxide-halogen bleaching sequence
US5149442A (en) * 1990-04-23 1992-09-22 Eka Nobel Ab Reduction of halogenated organic compounds in spent bleach liquor
US5310458A (en) * 1989-06-06 1994-05-10 Eka Nobel Ab Process for bleaching lignocellulose-containing pulps

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416297A1 (fr) * 1978-01-31 1979-08-31 Europeen Cellulose Procede anti-polluant de blanchiment de pate a papier
FR2432574A1 (fr) * 1978-08-01 1980-02-29 Europeen Cellulose Procede de blanchiment de pate a papier
FR2572431B1 (fr) * 1984-10-25 1987-12-04 Centre Tech Ind Papier Procede pour la preparation des pates papetieres chimiques en vue du blanchiment.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE753531C (de) * 1938-11-09 1953-05-18 Degussa Verfahren zum Bleichen von Zellstoff
DE2327900C3 (de) * 1973-06-01 1985-02-07 Degussa Ag, 6000 Frankfurt Bleichaufschluß von Zellstoff mit erheblich reduziertem Chloreinsatz

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5310458A (en) * 1989-06-06 1994-05-10 Eka Nobel Ab Process for bleaching lignocellulose-containing pulps
US5143580A (en) * 1990-04-23 1992-09-01 Eka Nobel Ab Process for reducing the amount of halogenated organic compounds in spent liquor from a peroxide-halogen bleaching sequence
US5149442A (en) * 1990-04-23 1992-09-22 Eka Nobel Ab Reduction of halogenated organic compounds in spent bleach liquor

Also Published As

Publication number Publication date
BR7603006A (pt) 1977-05-31
NL7513942A (nl) 1977-03-02
ZA757822B (en) 1976-11-24
ES443318A1 (es) 1977-05-01
ATA861075A (de) 1977-04-15
NO145344B (no) 1981-11-23
BE836462R (fr) 1976-06-09
FI753314A (fr) 1977-03-01
YU301275A (en) 1983-04-27
FR2322235B1 (fr) 1979-04-06
GB1544216A (en) 1979-04-19
FI62869C (fi) 1983-03-10
CH620002A5 (en) 1980-10-31
FR2322235A1 (fr) 1977-03-25
FI62869B (fi) 1982-11-30
AT340765B (de) 1978-01-10
NO754077L (fr) 1977-03-01
YU37370B (en) 1984-08-31
DE2538673C2 (de) 1986-01-16
DE2538673A1 (de) 1977-03-03
SE7602842L (sv) 1977-03-01
IT1055792B (it) 1982-01-11
AR221678A1 (es) 1981-03-13

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Legal Events

Date Code Title Description
MKEX Expiry