ES443318A1 - Procedimiento mejorado de varias etapas para el blanqueo to-tal, con poco consumo de cloro, de celulosa. - Google Patents

Procedimiento mejorado de varias etapas para el blanqueo to-tal, con poco consumo de cloro, de celulosa.

Info

Publication number
ES443318A1
ES443318A1 ES443318A ES443318A ES443318A1 ES 443318 A1 ES443318 A1 ES 443318A1 ES 443318 A ES443318 A ES 443318A ES 443318 A ES443318 A ES 443318A ES 443318 A1 ES443318 A1 ES 443318A1
Authority
ES
Spain
Prior art keywords
bleaching
effluent
pulp
alkali
alkaline peroxide
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
ES443318A
Other languages
English (en)
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
Degussa GmbH
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 Degussa GmbH, Deutsche Gold und Silber Scheideanstalt filed Critical Degussa GmbH
Publication of ES443318A1 publication Critical patent/ES443318A1/es
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)
ES443318A 1975-08-30 1975-12-09 Procedimiento mejorado de varias etapas para el blanqueo to-tal, con poco consumo de cloro, de celulosa. Expired ES443318A1 (es)

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
ES443318A1 true ES443318A1 (es) 1977-05-01

Family

ID=5955230

Family Applications (1)

Application Number Title Priority Date Filing Date
ES443318A Expired ES443318A1 (es) 1975-08-30 1975-12-09 Procedimiento mejorado de varias etapas para el blanqueo to-tal, con poco consumo de cloro, de celulosa.

Country Status (17)

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

Families Citing this family (6)

* 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.
ATE97179T1 (de) * 1989-06-06 1993-11-15 Eka Nobel Ab Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen.
SE466061B (sv) * 1990-04-23 1991-12-09 Eka Nobel Ab Blekning av kemisk massa genom behandling med foerst ett komplexbildande aemne och sedan ett peroxidinnehaallande aemne
SE9001481L (sv) * 1990-04-23 1991-10-24 Eka Nobel Ab Reduktion av halogenorganiska foereningar i blekeriavlopp

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

Also Published As

Publication number Publication date
YU301275A (en) 1983-04-27
FI62869B (fi) 1982-11-30
BE836462R (fr) 1976-06-09
FI753314A (es) 1977-03-01
IT1055792B (it) 1982-01-11
DE2538673C2 (de) 1986-01-16
ZA757822B (en) 1976-11-24
FR2322235B1 (es) 1979-04-06
BR7603006A (pt) 1977-05-31
DE2538673A1 (de) 1977-03-03
NO754077L (es) 1977-03-01
CA1080406A (en) 1980-07-01
FI62869C (fi) 1983-03-10
SE7602842L (sv) 1977-03-01
FR2322235A1 (fr) 1977-03-25
AR221678A1 (es) 1981-03-13
CH620002A5 (en) 1980-10-31
NL7513942A (nl) 1977-03-02
ATA861075A (de) 1977-04-15
AT340765B (de) 1978-01-10
YU37370B (en) 1984-08-31
GB1544216A (en) 1979-04-19
NO145344B (no) 1981-11-23

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