EP0213376B1 - Procédé pour la délignification de matières cellulosiques - Google Patents

Procédé pour la délignification de matières cellulosiques Download PDF

Info

Publication number
EP0213376B1
EP0213376B1 EP86110249A EP86110249A EP0213376B1 EP 0213376 B1 EP0213376 B1 EP 0213376B1 EP 86110249 A EP86110249 A EP 86110249A EP 86110249 A EP86110249 A EP 86110249A EP 0213376 B1 EP0213376 B1 EP 0213376B1
Authority
EP
European Patent Office
Prior art keywords
cellulosic materials
process according
cooking
delignification
acid
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
EP86110249A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0213376A1 (fr
Inventor
Josef S. Dr. Gratzl
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.)
Solvay Chimie SA
Original Assignee
Interox SA
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 Interox SA filed Critical Interox SA
Priority to AT86110249T priority Critical patent/ATE57401T1/de
Publication of EP0213376A1 publication Critical patent/EP0213376A1/fr
Application granted granted Critical
Publication of EP0213376B1 publication Critical patent/EP0213376B1/fr
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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/26—Multistage processes

Definitions

  • Temperature and pressure are not critical, with room temperature and atmospheric pressure generally suitable.
  • the duration of the treatment can vary within wide limits depending on the type of equipment used, the choice of acid, the temperature and the pressure, for example from 30 minutes to several hours if the treatment is carried out by soaking the cellulosic materials in a vat, from 1 to 120 minutes if it is made by percolation in a column where the cellulosic materials to be treated are stacked.

Landscapes

  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Paper (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Dental Preparations (AREA)
  • External Artificial Organs (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Materials For Medical Uses (AREA)
  • Organic Insulating Materials (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Cleaning Or Drying Semiconductors (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Detergent Compositions (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
EP86110249A 1985-08-05 1986-07-25 Procédé pour la délignification de matières cellulosiques Expired - Lifetime EP0213376B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86110249T ATE57401T1 (de) 1985-08-05 1986-07-25 Verfahren zur delignifizierung von zellulosematerialien.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US76272485A 1985-08-05 1985-08-05
US762724 1985-08-05

Publications (2)

Publication Number Publication Date
EP0213376A1 EP0213376A1 (fr) 1987-03-11
EP0213376B1 true EP0213376B1 (fr) 1990-10-10

Family

ID=25065878

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110249A Expired - Lifetime EP0213376B1 (fr) 1985-08-05 1986-07-25 Procédé pour la délignification de matières cellulosiques

Country Status (14)

Country Link
EP (1) EP0213376B1 (no)
JP (1) JPH0742669B2 (no)
AT (1) ATE57401T1 (no)
AU (1) AU591508B2 (no)
BR (1) BR8603671A (no)
CA (1) CA1282911C (no)
DE (1) DE3674866D1 (no)
ES (1) ES2000831A6 (no)
FI (1) FI85725C (no)
IN (1) IN167959B (no)
NO (1) NO168375C (no)
NZ (1) NZ217001A (no)
PT (1) PT83117B (no)
YU (1) YU45352B (no)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU591509B2 (en) * 1985-08-05 1989-12-07 Interox Societe Anonyme Process for the delignification of cellulosic substances
FI122654B (fi) * 1997-12-08 2012-05-15 Ovivo Luxembourg Sarl Menetelmä paperisellumassan valmistamiseksi
CA2687581C (en) * 2007-05-23 2015-04-21 Alberta Research Council Inc. Method to remove hemicellulose from cellulosic fibres using a solution of ammonia and hydrogen peroxide

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE873649C (de) * 1944-08-25 1953-04-16 Degussa Verfahren zur Herstellung von ungebleichten Zellstoffen mit hohem Weissgehalt
SE373896B (no) * 1972-07-05 1975-02-17 Mo Och Domsjoe Ab
SE380298B (sv) * 1974-03-14 1975-11-03 Mo Forfarande for delignifiering genom syrgas-alkalibehandling av lignocelluosahaltigt material
US4486267A (en) * 1983-11-14 1984-12-04 Mead Corporation Chemithermomechanical pulping process employing separate alkali and sulfite treatments
AU591509B2 (en) * 1985-08-05 1989-12-07 Interox Societe Anonyme Process for the delignification of cellulosic substances

Also Published As

Publication number Publication date
FI863193A0 (fi) 1986-08-05
YU137086A (en) 1987-10-31
JPH0742669B2 (ja) 1995-05-10
NO863132D0 (no) 1986-08-04
ATE57401T1 (de) 1990-10-15
EP0213376A1 (fr) 1987-03-11
BR8603671A (pt) 1987-03-10
IN167959B (no) 1991-01-12
AU591508B2 (en) 1989-12-07
NO168375C (no) 1992-02-12
FI85725C (fi) 1992-05-25
FI85725B (fi) 1992-02-14
NO863132L (no) 1987-02-06
FI863193A (fi) 1987-02-06
NO168375B (no) 1991-11-04
CA1282911C (fr) 1991-04-16
AU6054386A (en) 1987-02-12
PT83117A (fr) 1986-09-01
DE3674866D1 (de) 1990-11-15
NZ217001A (en) 1989-01-27
PT83117B (pt) 1988-10-14
JPS6297991A (ja) 1987-05-07
ES2000831A6 (es) 1988-03-16
YU45352B (en) 1992-05-28

Similar Documents

Publication Publication Date Title
EP0019963B1 (fr) Procédé pour la délignification et le blanchiment de pâtes cellulosiques chimiques et semi-chimiques
EP0578305B1 (fr) Procédé pour la délignification d'une pâte à papier chimique
EP1322814B8 (fr) Procede de blanchiment de pates a papier
FR2533240A1 (fr) Procede pour produire une liqueur de cuisson donnant un rendement accru en pate kraft, et liqueur de cuisson ainsi obtenue
EP0509905B1 (fr) Procédé de préparation de pâte à papier à haut rendement et blanchie
US4826568A (en) Process for delignification of cellulosic substances by pretreating with a complexing agent followed by peroxide prior to kraft digestion
BE1004674A3 (fr) Procede pour le blanchiment d'une pate a papier chimique et application de ce procede au blanchiment d'une pate kraft.
EP0213376B1 (fr) Procédé pour la délignification de matières cellulosiques
EP0801169B1 (fr) Procédé de délignification et de blanchiment de pâtes à papier chimiques
EP0212329B1 (fr) Procédé pour la délignification de matières cellulosiques
EP0587822B1 (fr) Procede pour blanchiment et la delignification de pates a papier chimiques
BE1005800A3 (fr) Procede pour la delignification et le blanchiment d'une pate a papier chimique.
EP0190723A1 (fr) Procédé pour l'amélioration des propriétés mécaniques d'une pâte à papier chimique ou semi-chimique de bagasse
FI70440C (fi) Foerfarande foer framstaellning av kemikaliska pappersmassor
FI71780C (fi) Kokningsfoerfarande foer lignosellulosamaterial i och foer framstaellning av pappersmassa.
BE1005094A3 (fr) Procede pour la preservation des caracteristiques de resistance mecanique des pates a papier chimiques et application de ce procede au blanchiment et a la delignification des pates kraft.
FR2528084A1 (fr) Procede perfectionne de cuisson de pate a papier et composition pour sa mise en oeuvre
BE656601A (no)
CH645146A5 (fr) Procede pour la fabrication de pate papetiere chimique et pate ainsi obtenue.

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19870827

17Q First examination report despatched

Effective date: 19880713

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 57401

Country of ref document: AT

Date of ref document: 19901015

Kind code of ref document: T

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3674866

Country of ref document: DE

Date of ref document: 19901115

ITTA It: last paid annual fee
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
BECA Be: change of holder's address

Free format text: 930603 *SOLVAY INTEROX:RUE DU PRINCE ALBERT 33, B-1050 BRUXELLES

BECN Be: change of holder's name

Effective date: 19930603

EAL Se: european patent in force in sweden

Ref document number: 86110249.9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20000605

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20000614

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20000711

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20000719

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20000727

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20000728

Year of fee payment: 15

Ref country code: DE

Payment date: 20000728

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20000731

Year of fee payment: 15

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: 20010725

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010725

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: 20010726

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010731

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010731

BERE Be: lapsed

Owner name: SOLVAY INTEROX

Effective date: 20010731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020201

EUG Se: european patent has lapsed

Ref document number: 86110249.9

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20010725

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: 20020329

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20020201

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: 20020501

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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: 20050725