ES2085358T3 - Proceso de alta eficacia para blanquear celulosa con dioxido de cloro. - Google Patents

Proceso de alta eficacia para blanquear celulosa con dioxido de cloro.

Info

Publication number
ES2085358T3
ES2085358T3 ES90915570T ES90915570T ES2085358T3 ES 2085358 T3 ES2085358 T3 ES 2085358T3 ES 90915570 T ES90915570 T ES 90915570T ES 90915570 T ES90915570 T ES 90915570T ES 2085358 T3 ES2085358 T3 ES 2085358T3
Authority
ES
Spain
Prior art keywords
chlorine dioxide
high efficiency
around
efficiency process
mixture
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 - Lifetime
Application number
ES90915570T
Other languages
English (en)
Inventor
Hou-Min Chang
Geoffrey Eugene Seger
Hasan Jameel
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.)
North Carolina State University
Original Assignee
North Carolina State University
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23682296&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2085358(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by North Carolina State University filed Critical North Carolina State University
Application granted granted Critical
Publication of ES2085358T3 publication Critical patent/ES2085358T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • D21C9/142—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 in a multistage process involving ClO2/Cl2 exclusively

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Noodles (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

UN PROCESO DE DECOLORACION DE PULPA DE MADERA DE GRAN EFICACIA PARA PRODUCIR PULPAS DE MADERA CON UN BRILLO MAYOR UTILIZANDO LA MISMA DOSIS DE DIOXIDO DE CLORO O DE UN BRILLO IGUAL UTILIZANDO UNA DOSIS SIGNIFICANTEMENTE REDUCIDA DE DIOXIDO DE CLORO. EL PROCESO COMPRENDE EL SOMETER A REACCION EL DIOXIDO DE CLORO CON PULPA DE MADERA EN UN PH DE 5-10 DURANTE ALREDEDOR DE 5-40 MINUTOS Y DESPUES ACIDIFICAR LA MEZCLA A UN PH DE ALREDEDOR DE 1.9-4.2. DESPUES SE PERMITE A LA MEZCLA QUE REACCIONE DURANTE ALREDEDOR DE 2 HORAS O MAS PARA COMPLETAR EL PROCESO DE DECOLORACION DE DOS PASOS DE PH ALTO/BAJO.
ES90915570T 1989-10-19 1990-10-17 Proceso de alta eficacia para blanquear celulosa con dioxido de cloro. Expired - Lifetime ES2085358T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US42434789A 1989-10-19 1989-10-19

Publications (1)

Publication Number Publication Date
ES2085358T3 true ES2085358T3 (es) 1996-06-01

Family

ID=23682296

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90915570T Expired - Lifetime ES2085358T3 (es) 1989-10-19 1990-10-17 Proceso de alta eficacia para blanquear celulosa con dioxido de cloro.

Country Status (12)

Country Link
EP (1) EP0496782B1 (es)
CN (1) CN1052157A (es)
AR (1) AR243945A1 (es)
AU (1) AU6537690A (es)
CA (1) CA2069322A1 (es)
DE (1) DE69026105T2 (es)
ES (1) ES2085358T3 (es)
MX (1) MX172853B (es)
NZ (1) NZ235754A (es)
PL (1) PL164745B1 (es)
WO (1) WO1991005909A1 (es)
ZA (1) ZA908341B (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5268075A (en) * 1989-10-19 1993-12-07 North Carolina State University High efficiency two-step, high-low pH chlorine dioxide pulp bleaching process
BR9901291B1 (pt) * 1999-04-27 2011-11-01 processo para branqueamento de polpas quìmicas de baixa consistência.
SE524896C2 (sv) * 2003-03-07 2004-10-19 Kvaerner Pulping Tech Blekning av cellulosamassa med klordioxid i två faser med uppvärmning mellan faserna
CN101171386B (zh) * 2005-05-04 2011-11-16 诺维信北美公司 二氧化氯处理组合物和方法
FI122626B (fi) * 2006-03-31 2012-04-30 Laennen Tutkimus Western Res Inc Oy Kemiallisen massan valkaisumenetelmä
CN103469663B (zh) * 2013-08-13 2016-05-04 广西大学 一种通过响应面法优化纸浆二氧化氯漂白方法
FR3062138B1 (fr) * 2017-01-23 2019-06-07 Centre Technique De L'industrie Des Papiers, Cartons Et Celluloses Procede de blanchiment d'une pate a papier
CN111979818A (zh) * 2020-08-07 2020-11-24 齐鲁工业大学 一种硫酸盐木浆短程序ecf漂白工艺x/z/d-eop-d或x/d/z-eop-d

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3433702A (en) * 1965-06-28 1969-03-18 Hooker Chemical Corp Woodpulp bleaching process
CA1004805A (en) * 1973-10-18 1977-02-08 Louis O. Torregrossa Non-neutral bleaching of pulp
FR2432574A1 (fr) * 1978-08-01 1980-02-29 Europeen Cellulose Procede de blanchiment de pate a papier
SE8106334L (sv) * 1981-10-27 1983-04-28 Sunds Defibrator Sett att behandla cellulosahaltigt material
CA1239253A (en) * 1983-05-20 1988-07-19 Louis O. Torregrossa Method of chlorine dioxide bleaching

Also Published As

Publication number Publication date
PL164745B1 (pl) 1994-10-31
EP0496782A1 (en) 1992-08-05
EP0496782A4 (en) 1993-02-03
DE69026105T2 (de) 1996-09-26
PL287415A1 (en) 1991-09-23
AR243945A1 (es) 1993-09-30
DE69026105D1 (de) 1996-04-25
ZA908341B (en) 1991-08-28
CN1052157A (zh) 1991-06-12
NZ235754A (en) 1993-03-26
MX172853B (es) 1994-01-17
WO1991005909A1 (en) 1991-05-02
EP0496782B1 (en) 1996-03-20
AU6537690A (en) 1991-05-16
CA2069322A1 (en) 1991-04-20

Similar Documents

Publication Publication Date Title
NZ189614A (en) Delignification of cellulosic chips using parallel meshing screws
ES2063254T3 (es) Deslignificacion con oxigeno y tratamiento enzimatico.
ES2085358T3 (es) Proceso de alta eficacia para blanquear celulosa con dioxido de cloro.
FI852505L (fi) Metod foer avlaegsnande av lignin och blekning av cellulosa.
SE7608696L (sv) Sett att framstella cellulosahaltiga massor i hogt utbyte och till lagkostnad
NZ220857A (en) Preparation of individualised, crosslinked, cellulosic fibers
FI873234L (fi) Blekningsfoerfarande och -sammansaettning.
RU94041701A (ru) Способ увеличения степени белизны древесной массы и жесткой древесной целлюлозы с высоким выходом
FI891248L (fi) Menetelmä puumassan samanaikaiseksi jauhamiseksi ja valkaisemiseksi
ATE69953T1 (de) Verwendung von polysulfatierten heparinen.
NO932200L (no) Fremgangsmaate for bleking av papirmasse
FI906076A0 (fi) Menetelmä kemiallisten selluloosamassojen valkaisemiseksi valkaistujen absorboivien massojen valmistamiseksi
NZ194821A (en) Absorbent fibrous batt of non-delignified wood pulp fibres
ES420507A1 (es) Procedimiento para estabilizar un material de fibra con hi-dratos de carbono en un tratamiento oxidante alcalino.
FI860688A0 (fi) Flerstegsperoxidblekning av mekanisk massa.
FI882769L (fi) Styrning av peroxidblekning av olika traemassor.
RU93058344A (ru) Высокоэффективный способ отбеливания пульпы двуокисью хлора
ATE151824T1 (de) Aufschlussverfahren
EP0576541A4 (en) High efficiency chlorine dioxide pulp bleaching process
SE8903710D0 (sv) Saett att framstaella cellulosahaltig massa
FI895394A0 (fi) Fosfaattikoostumuksia ja niiden käyttö
ZA806518B (en) Flameproofing of hardwood by a low-pressure process
AU2202188A (en) Method of bleaching or delignification of cellulose pulp with oxygen
FR2066674A5 (en) Paper contg some unbeaten fibres
RO102619B1 (en) Alkaline treatment method to 100% cellulose fibre cloth

Legal Events

Date Code Title Description
FG2A Definitive protection

Ref document number: 496782

Country of ref document: ES