ZA757622B - Bleaching process for wood pulp with the use of considerably reduced amounts of chlorine - Google Patents

Bleaching process for wood pulp with the use of considerably reduced amounts of chlorine

Info

Publication number
ZA757622B
ZA757622B ZA757622A ZA757622A ZA757622B ZA 757622 B ZA757622 B ZA 757622B ZA 757622 A ZA757622 A ZA 757622A ZA 757622 A ZA757622 A ZA 757622A ZA 757622 B ZA757622 B ZA 757622B
Authority
ZA
South Africa
Prior art keywords
chlorine
wood pulp
considerably reduced
bleaching process
reduced amounts
Prior art date
Application number
ZA757622A
Other languages
English (en)
Inventor
Horst Krueger
Krueger Horst
Werner Traser
Traser Werner
Original Assignee
Degussa
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 SE7407273A priority patent/SE415674B/xx
Priority to AT452974A priority patent/AT334732B/de
Application filed by Degussa filed Critical Degussa
Priority to ZA757622A priority patent/ZA757622B/xx
Priority to BE6045281A priority patent/BE836358A/xx
Priority to CH1587875A priority patent/CH618487A5/de
Priority to FR7628206A priority patent/FR2364999A1/fr
Publication of ZA757622B publication Critical patent/ZA757622B/xx

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)
ZA757622A 1973-06-01 1975-12-04 Bleaching process for wood pulp with the use of considerably reduced amounts of chlorine ZA757622B (en)

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
CA201,323A CA1055656A (en) 1973-06-01 1974-05-31 Bleach hydrolysis of cellulose with substantially reduced use of chlorine
SE7407273A SE415674B (sv) 1973-06-01 1974-05-31 Flerstegsforfarande for klorfattig helblekning av cellulosamassa
AT452974A AT334732B (de) 1973-06-01 1974-05-31 Mehrstufiges verfahren zur chlorarmen vollbleiche von zellstoff
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 (1)

Publication Number Publication Date
ZA757622B true ZA757622B (en) 1976-11-24

Family

ID=27429620

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA757622A ZA757622B (en) 1973-06-01 1975-12-04 Bleaching process for wood pulp with the use of considerably reduced amounts of chlorine

Country Status (9)

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

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

Family Cites Families (3)

* 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
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
ATA452974A (de) 1976-05-15
DE2327900B2 (de) 1978-08-03
FI62361B (fi) 1982-08-31
CA1055656A (en) 1979-06-05
BE836358A (fr) 1976-04-01
DE2327900A1 (de) 1975-01-02
CH618487A5 (en) 1980-07-31
FR2364999B1 (enrdf_load_html_response) 1979-01-12
SE415674B (sv) 1980-10-20
FI62361C (fi) 1982-12-10
FR2364999A1 (fr) 1978-04-14
SE7407273L (enrdf_load_html_response) 1974-12-02
DE2327900C3 (de) 1985-02-07
AT334732B (de) 1976-02-10
FI132674A7 (enrdf_load_html_response) 1974-12-02

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