EP0446110B1 - Procédé de préparation de pâtes à haut rendement blanchies - Google Patents
Procédé de préparation de pâtes à haut rendement blanchies Download PDFInfo
- Publication number
- EP0446110B1 EP0446110B1 EP91400567A EP91400567A EP0446110B1 EP 0446110 B1 EP0446110 B1 EP 0446110B1 EP 91400567 A EP91400567 A EP 91400567A EP 91400567 A EP91400567 A EP 91400567A EP 0446110 B1 EP0446110 B1 EP 0446110B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sulphite
- sodium
- process according
- reducing agent
- aid
- 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
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
- D21C9/1026—Other features in bleaching processes
- D21C9/1042—Use of chelating agents
-
- 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
-
- 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
- D21C9/1084—Bleaching ; Apparatus therefor with reducing compounds
-
- 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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
Definitions
- High-yield pulps are produced by subjecting the starting lignocellulosic material, such as wood in the form of chips, to an adion of the mechanical type, combined or not with actions of the chemical and thermal type.
- the bleached pulp obtained has a white degree equal to 84.7%.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Glass Compositions (AREA)
- Detergent Compositions (AREA)
- Noodles (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9003128A FR2659363B1 (fr) | 1990-03-07 | 1990-03-07 | Procede de preparation de pates a haut rendement blanchies. |
FR9003128 | 1990-03-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0446110A1 EP0446110A1 (fr) | 1991-09-11 |
EP0446110B1 true EP0446110B1 (fr) | 1995-07-12 |
Family
ID=9394633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91400567A Expired - Lifetime EP0446110B1 (fr) | 1990-03-07 | 1991-03-01 | Procédé de préparation de pâtes à haut rendement blanchies |
Country Status (13)
Country | Link |
---|---|
US (1) | US5143581A (ja) |
EP (1) | EP0446110B1 (ja) |
JP (1) | JPH0660474B2 (ja) |
AT (1) | ATE125013T1 (ja) |
AU (1) | AU641478B2 (ja) |
CA (1) | CA2037678C (ja) |
DE (1) | DE69111098T2 (ja) |
ES (1) | ES2074670T3 (ja) |
FI (1) | FI98840C (ja) |
FR (1) | FR2659363B1 (ja) |
NO (1) | NO178899C (ja) |
NZ (1) | NZ237310A (ja) |
PT (1) | PT96951B (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2639371B1 (fr) * | 1988-11-24 | 1995-04-14 | Atochem | Procede de blanchiment de pates desencrees |
BE1004630A3 (fr) * | 1990-10-17 | 1992-12-22 | Interox Internat Sa | Procede pour la preservation des caracteristiques de resistance mecanique des pates a papier chimiques. |
FR2675518B1 (fr) * | 1991-04-17 | 1996-10-18 | Atochem | Procede de preparation de pate a papier a haut rendement et blanchie, a partir de copeaux de bois. |
US6398908B1 (en) | 1991-04-30 | 2002-06-04 | Eka Nobel Ab | Process for acid bleaching of lignocellulose-containing pulp with a magnesium compound |
SE502667C2 (sv) * | 1993-07-12 | 1995-12-04 | Kvaerner Pulping Tech | Behandling av fibermaterial med komplexbildare före kokning |
WO1997032077A1 (en) * | 1996-02-27 | 1997-09-04 | Tetra Laval Holding & Finance S.A. | Process for sanitizing post-consumer paper fibers and product formed therefrom |
DE10064131C2 (de) * | 2000-12-22 | 2003-03-27 | Sca Hygiene Prod Gmbh | Vollgebleichter Sulfit-Zellstoff, Verfahren zu seiner Herstellung und daraus hergestellte Produkte |
US7297225B2 (en) * | 2004-06-22 | 2007-11-20 | Georgia-Pacific Consumer Products Lp | Process for high temperature peroxide bleaching of pulp with cool discharge |
US8138106B2 (en) | 2005-09-30 | 2012-03-20 | Rayonier Trs Holdings Inc. | Cellulosic fibers with odor control characteristics |
US11591751B2 (en) | 2019-09-17 | 2023-02-28 | Gpcp Ip Holdings Llc | High efficiency fiber bleaching process |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2604197B1 (fr) * | 1986-09-23 | 1988-11-18 | Atochem | Procede de blanchiment de matieres lignocellulosiques. |
FR2613388B1 (fr) * | 1987-04-02 | 1990-05-04 | Atochem | Procede de blanchiment de pates |
FR2615874B1 (fr) * | 1987-05-25 | 1992-02-21 | Atochem | Procede de preparation de pates chimicothermomecaniques |
JPH0197291A (ja) * | 1987-10-05 | 1989-04-14 | Fmc Corp | 機械パルプの漂白方法 |
JPH0677245B2 (ja) * | 1988-08-11 | 1994-09-28 | 株式会社日立製作所 | キャッシュ制御方法および情報処理システム |
-
1990
- 1990-03-07 FR FR9003128A patent/FR2659363B1/fr not_active Expired - Fee Related
-
1991
- 1991-03-01 AT AT91400567T patent/ATE125013T1/de not_active IP Right Cessation
- 1991-03-01 DE DE69111098T patent/DE69111098T2/de not_active Expired - Fee Related
- 1991-03-01 EP EP91400567A patent/EP0446110B1/fr not_active Expired - Lifetime
- 1991-03-01 ES ES91400567T patent/ES2074670T3/es not_active Expired - Lifetime
- 1991-03-05 NZ NZ237310A patent/NZ237310A/en unknown
- 1991-03-05 NO NO910865A patent/NO178899C/no not_active IP Right Cessation
- 1991-03-06 PT PT96951A patent/PT96951B/pt not_active IP Right Cessation
- 1991-03-06 FI FI911118A patent/FI98840C/fi active
- 1991-03-06 AU AU72668/91A patent/AU641478B2/en not_active Ceased
- 1991-03-06 US US07/665,531 patent/US5143581A/en not_active Expired - Fee Related
- 1991-03-06 CA CA002037678A patent/CA2037678C/fr not_active Expired - Fee Related
- 1991-03-07 JP JP3067978A patent/JPH0660474B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
PT96951A (pt) | 1991-10-31 |
FR2659363B1 (fr) | 1996-04-19 |
JPH04214491A (ja) | 1992-08-05 |
FR2659363A1 (fr) | 1991-09-13 |
FI911118A (fi) | 1991-09-08 |
EP0446110A1 (fr) | 1991-09-11 |
JPH0660474B2 (ja) | 1994-08-10 |
PT96951B (pt) | 1998-10-30 |
FI98840B (fi) | 1997-05-15 |
DE69111098T2 (de) | 1995-11-23 |
NO910865L (no) | 1991-09-09 |
CA2037678A1 (fr) | 1991-09-08 |
NO178899C (no) | 1996-06-26 |
ATE125013T1 (de) | 1995-07-15 |
NO178899B (no) | 1996-03-18 |
US5143581A (en) | 1992-09-01 |
ES2074670T3 (es) | 1995-09-16 |
CA2037678C (fr) | 1999-11-16 |
DE69111098D1 (de) | 1995-08-17 |
AU7266891A (en) | 1991-09-12 |
NZ237310A (en) | 1993-07-27 |
FI98840C (fi) | 1997-08-25 |
NO910865D0 (no) | 1991-03-05 |
FI911118A0 (fi) | 1991-03-06 |
AU641478B2 (en) | 1993-09-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0446110B1 (fr) | Procédé de préparation de pâtes à haut rendement blanchies | |
CA1206704A (fr) | Procede pour le traitement de pates papetieres chimiques | |
CA2003587C (fr) | Procede de blanchiment de pates desencrees | |
EP0263040B1 (fr) | Procédé de blanchiment de matières lignocellulosiques | |
EP0285530B1 (fr) | Procédé de blanchiment de pâtes | |
EP0514609B1 (fr) | Procédé de blanchiment au peroxyde d'hydrogène de pâtes à papier à haut rendement | |
CA2066316C (fr) | Procede de preparation de pate a papier a haut rendement et blanchie | |
CA2041388C (fr) | Procede de blanchiment au peroxyde d'hydrogene de pates a papier a haut rendement | |
FR2910027A1 (fr) | Procede de blanchiment des pates papeteries chimiques par traitement final a l'ozone a haute temperature | |
EP0293309B1 (fr) | Procédé de préparation de pâtes chimicothermomécaniques | |
EP3008240B1 (fr) | Procede de traitement des pates papetieres chimiques par traitement a l'ozone en presence d'ions magnesium | |
EP0351330B1 (fr) | Procédé de fabrication de pâtes chimicothermomécaniques blanchies | |
EP0575374A1 (fr) | Procede pour le blanchiment d'une pate a papier chimique et application de ce procede au blanchiment d'une pate kraft | |
FR2622221A1 (fr) | Procede de blanchiment de pates | |
FR2593527A1 (fr) | Procede de blanchiment des pates mecaniques. | |
BE1005800A3 (fr) | Procede pour la delignification et le blanchiment d'une pate a papier chimique. | |
BE1010880A3 (fr) | Procede de fabrication de pate a papier chimique. | |
BE1011129A4 (fr) | Procede continu de delignification et/ou de blanchiment de pate a papier chimique vierge ou recyclee. | |
BE656601A (ja) | ||
CH161573A (fr) | Procédé de blanchiment. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19910306 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE DE ES FR GB IT SE |
|
RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ELF ATOCHEM S.A. |
|
17Q | First examination report despatched |
Effective date: 19931208 |
|
ITF | It: translation for a ep patent filed |
Owner name: D. PERROTTA & C. S.A.S. |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE DE ES FR GB IT SE |
|
REF | Corresponds to: |
Ref document number: 125013 Country of ref document: AT Date of ref document: 19950715 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 69111098 Country of ref document: DE Date of ref document: 19950817 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2074670 Country of ref document: ES Kind code of ref document: T3 |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19950915 |
|
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
PLBQ | Unpublished change to opponent data |
Free format text: ORIGINAL CODE: EPIDOS OPPO |
|
PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
26 | Opposition filed |
Opponent name: SOLVAY (SOCIETE ANONYME) Effective date: 19960409 |
|
PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
PLBO | Opposition rejected |
Free format text: ORIGINAL CODE: EPIDOS REJO |
|
PLBN | Opposition rejected |
Free format text: ORIGINAL CODE: 0009273 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: OPPOSITION REJECTED |
|
27O | Opposition rejected |
Effective date: 19980115 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20010221 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20010228 Year of fee payment: 11 Ref country code: ES Payment date: 20010228 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20010306 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20010313 Year of fee payment: 11 Ref country code: AT Payment date: 20010313 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20010420 Year of fee payment: 11 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020301 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020301 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020302 Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020302 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020331 |
|
BERE | Be: lapsed |
Owner name: S.A. *ELF ATOCHEM Effective date: 20020331 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20021001 |
|
EUG | Se: european patent has lapsed |
Ref document number: 91400567.3 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20020301 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20021129 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20030410 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050301 |