FR2364999A1 - Procede de desagregation et de blanchiment de pates cellulosiques avec utilisation de chlore fortement reduite - Google Patents

Procede de desagregation et de blanchiment de pates cellulosiques avec utilisation de chlore fortement reduite

Info

Publication number
FR2364999A1
FR2364999A1 FR7628206A FR7628206A FR2364999A1 FR 2364999 A1 FR2364999 A1 FR 2364999A1 FR 7628206 A FR7628206 A FR 7628206A FR 7628206 A FR7628206 A FR 7628206A FR 2364999 A1 FR2364999 A1 FR 2364999A1
Authority
FR
France
Prior art keywords
bleaching
involving
strongly alkaline
alkaline peroxide
cellulose pulps
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.)
Granted
Application number
FR7628206A
Other languages
English (en)
French (fr)
Other versions
FR2364999B1 (enrdf_load_stackoverflow
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
Priority to DE2327900A priority Critical patent/DE2327900C3/de
Priority to FI1326/74A priority patent/FI62361C/fi
Priority to CA201,323A priority patent/CA1055656A/en
Priority to AT452974A priority patent/AT334732B/de
Priority to SE7407273A priority patent/SE415674B/xx
Priority to ZA757622A priority patent/ZA757622B/xx
Priority to BE6045281A priority patent/BE836358A/xx
Priority to CH1587875A priority patent/CH618487A5/de
Application filed by Degussa GmbH, Deutsche Gold und Silber Scheideanstalt filed Critical Degussa GmbH
Priority to FR7628206A priority patent/FR2364999A1/fr
Publication of FR2364999A1 publication Critical patent/FR2364999A1/fr
Application granted granted Critical
Publication of FR2364999B1 publication Critical patent/FR2364999B1/fr
Granted 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)
FR7628206A 1973-06-01 1976-09-20 Procede de desagregation et de blanchiment de pates cellulosiques avec utilisation de chlore fortement reduite Granted FR2364999A1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
DE2327900A DE2327900C3 (de) 1973-06-01 1973-06-01 Bleichaufschluß von Zellstoff mit erheblich reduziertem Chloreinsatz
FI1326/74A FI62361C (fi) 1973-06-01 1974-04-30 Blekning av cellulosa med en avsevaert reducerad klormaengd
AT452974A AT334732B (de) 1973-06-01 1974-05-31 Mehrstufiges verfahren zur chlorarmen vollbleiche von zellstoff
SE7407273A SE415674B (sv) 1973-06-01 1974-05-31 Flerstegsforfarande for klorfattig helblekning av cellulosamassa
CA201,323A CA1055656A (en) 1973-06-01 1974-05-31 Bleach hydrolysis of cellulose with substantially reduced use of chlorine
ZA757622A ZA757622B (en) 1973-06-01 1975-12-04 Bleaching process for wood pulp with the use of considerably reduced amounts of chlorine
BE6045281A BE836358A (fr) 1973-06-01 1975-12-05 Procede de decomposition et de blanchiment de cellulose permettant de reduire le chlore mis en oeuvre et produits obtenus par ce procede
CH1587875A CH618487A5 (en) 1973-06-01 1975-12-05 Multiple-stage process for the low-chlorine complete bleaching of wood pulp
FR7628206A FR2364999A1 (fr) 1973-06-01 1976-09-20 Procede de desagregation et de blanchiment de pates cellulosiques avec utilisation de chlore fortement reduite

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE2327900A DE2327900C3 (de) 1973-06-01 1973-06-01 Bleichaufschluß von Zellstoff mit erheblich reduziertem Chloreinsatz
ZA757622A ZA757622B (en) 1973-06-01 1975-12-04 Bleaching process for wood pulp with the use of considerably reduced amounts of chlorine
CH1587875A CH618487A5 (en) 1973-06-01 1975-12-05 Multiple-stage process for the low-chlorine complete bleaching of wood pulp
FR7628206A FR2364999A1 (fr) 1973-06-01 1976-09-20 Procede de desagregation et de blanchiment de pates cellulosiques avec utilisation de chlore fortement reduite

Publications (2)

Publication Number Publication Date
FR2364999A1 true FR2364999A1 (fr) 1978-04-14
FR2364999B1 FR2364999B1 (enrdf_load_stackoverflow) 1979-01-12

Family

ID=27429620

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7628206A Granted FR2364999A1 (fr) 1973-06-01 1976-09-20 Procede de desagregation et de blanchiment de pates cellulosiques avec utilisation de chlore fortement reduite

Country Status (9)

Country Link
AT (1) AT334732B (enrdf_load_stackoverflow)
BE (1) BE836358A (enrdf_load_stackoverflow)
CA (1) CA1055656A (enrdf_load_stackoverflow)
CH (1) CH618487A5 (enrdf_load_stackoverflow)
DE (1) DE2327900C3 (enrdf_load_stackoverflow)
FI (1) FI62361C (enrdf_load_stackoverflow)
FR (1) FR2364999A1 (enrdf_load_stackoverflow)
SE (1) SE415674B (enrdf_load_stackoverflow)
ZA (1) ZA757622B (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2327900C3 (de) * 1973-06-01 1985-02-07 Degussa Ag, 6000 Frankfurt Bleichaufschluß von Zellstoff mit erheblich reduziertem Chloreinsatz
DE2538673C2 (de) * 1975-08-30 1986-01-16 Degussa Ag, 6000 Frankfurt Bleichaufschluß von Zellstoff mit erheblich reduziertem Chloreinsatz
BE869153A (fr) * 1977-07-29 1979-01-22 Ugine Kuhlmann Procede de fabrication de pates papetieres chimiques
DE2841013C2 (de) * 1978-09-21 1984-06-07 Degussa Ag, 6000 Frankfurt Verfahren zur Vollbleiche von Zellstoff
RU2129179C1 (ru) * 1998-03-17 1999-04-20 Сыктывкарский лесной институт Санкт-Петербургской лесотехнической академии Способ отбелки сульфатной целлюлозы
RU2128261C1 (ru) * 1998-05-26 1999-03-27 Сыктывкарский лесной институт Санкт-Петербургской лесотехнической академии Способ отбелки целлюлозы
RU2164572C1 (ru) * 2000-03-14 2001-03-27 Сыктывкарский лесной институт Санкт-Петербургской лесотехнической академии Способ отбелки сульфатной целлюлозы
US9631316B2 (en) * 2012-12-31 2017-04-25 Api Intellectual Property Holdings, Llc Biomass fractionation processes employing sulfur dioxide

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2327900A1 (de) * 1973-06-01 1975-01-02 Degussa Bleichaufschluss von zellstoff mit erheblich reduziertem chloreinsatz

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2527563A (en) * 1947-08-13 1950-10-31 Buffalo Electro Chem Co Method of bleaching semichemical pulps
FR1118216A (fr) * 1954-02-02 1956-06-01 I Ab Procédé de blanchiment de demi-cellulose

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2327900A1 (de) * 1973-06-01 1975-01-02 Degussa Bleichaufschluss von zellstoff mit erheblich reduziertem chloreinsatz

Also Published As

Publication number Publication date
DE2327900A1 (de) 1975-01-02
FI62361B (fi) 1982-08-31
FI62361C (fi) 1982-12-10
SE415674B (sv) 1980-10-20
CH618487A5 (en) 1980-07-31
DE2327900C3 (de) 1985-02-07
CA1055656A (en) 1979-06-05
DE2327900B2 (de) 1978-08-03
FI132674A7 (enrdf_load_stackoverflow) 1974-12-02
ATA452974A (de) 1976-05-15
BE836358A (fr) 1976-04-01
AT334732B (de) 1976-02-10
ZA757622B (en) 1976-11-24
FR2364999B1 (enrdf_load_stackoverflow) 1979-01-12
SE7407273L (enrdf_load_stackoverflow) 1974-12-02

Similar Documents

Publication Publication Date Title
FR2365000A1 (fr) Procede de blanchiment de la cellulose a plusieurs etapes avec mise en oeuvre de chlore reduite
FR2364999A1 (fr) Procede de desagregation et de blanchiment de pates cellulosiques avec utilisation de chlore fortement reduite
ES453345A1 (es) Un procedimiento para la polimerizacion o copolimerizacion de monomeros etilenicamente insaturados.
ES2079686T3 (es) Xilitol directamente comprimible y metodo.
NO875123L (no) Tilsetningsmiddel for hydraulisk sement.
BR9803764A (pt) Método de branquear polpa contendo lignina durante a fabricação
ES425711A1 (es) Procedimiento para la desliquificacion de un material lig- nocelulosico.
ES2148485T3 (es) Proceso de fabricacion de halopropanos y halopentanos.
GB1384166A (en) Adducts of hexafluoropropene and propylene
GB1259656A (enrdf_load_stackoverflow)
SE9702583L (sv) Förfarande för massaframställning
ES443326A3 (es) Procedimiento de varias etapas para el blanqueo total, con poco consumo de cloro, de celulosa.
IT8423015A0 (it) Procedimento per l'esercizio di una macchina di tessitura, nonche'impiego del procedimento.
GB1425901A (en) Pulping process
SU494435A1 (ru) Способ обработки титана
FR2256283A1 (en) Delignification of lignocellulosic material for paper - with alkali metal hydroxide, oxygen and opt. alkali metal sulphide
Sand Development of international water law in the Lake Chad Basin
FR2376708A1 (fr) Nouveau procede de fabrication de pieces semi-toriques par repoussage
FR2237843A1 (en) Bleaching and clarifying of aqueous effluent - using finely divided air with small amount of ozone and opt. chlorine
GB1378904A (en) Detergent compositions
GB1146889A (en) Vented hydraulic coupling
ES8503757A1 (es) Un metodo para mejorar la brillantez de una pulpa termomecanica.
USD215721S (en) Dental mirror
SE8305534D0 (sv) Mehrnip-hochdruckpresse
USD235105S (en) Bath tub

Legal Events

Date Code Title Description
ST Notification of lapse