EP0497671B1 - Nouveau procédé de raffinage de la pâte à papier - Google Patents

Nouveau procédé de raffinage de la pâte à papier Download PDF

Info

Publication number
EP0497671B1
EP0497671B1 EP92400190A EP92400190A EP0497671B1 EP 0497671 B1 EP0497671 B1 EP 0497671B1 EP 92400190 A EP92400190 A EP 92400190A EP 92400190 A EP92400190 A EP 92400190A EP 0497671 B1 EP0497671 B1 EP 0497671B1
Authority
EP
European Patent Office
Prior art keywords
refining
paper pulp
pulp
silica sol
weight
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
EP92400190A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0497671A1 (fr
Inventor
Michel Richard
Christian Roux
Claude Trouve
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.)
Sanofi Aventis France
Original Assignee
Francaise Hoechst Ste
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 Francaise Hoechst Ste filed Critical Francaise Hoechst Ste
Publication of EP0497671A1 publication Critical patent/EP0497671A1/fr
Application granted granted Critical
Publication of EP0497671B1 publication Critical patent/EP0497671B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/14—Disintegrating in mills
    • D21B1/16—Disintegrating in mills in the presence of chemical agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining

Definitions

  • the present invention relates to a new process for refining paper pulp.
  • refining is an essential operation which consumes more energy the higher the desired refining index.
  • the process according to the present invention is characterized in that a colloidal silica sol is added to the refining paste to reduce the time necessary to refine said paste.
  • colloidal silica sol denotes aqueous suspensions of elementary silica particles having an average diameter of less than 100 nm and which are not agglomerated with one another. These silica soils are common commercial products such as those marketed by the applicant under the name KLEBOSOL.
  • the process described above is carried out in the presence of a colloidal silica sol, the elementary particles of which have an average diameter of between approximately 10 nm and 50 nm.
  • the process according to the invention will preferably be carried out in the presence of 1 to 50% by weight of silica colloidal expressed in dry relative to the weight of the paper pulp also expressed in dry.
  • the silica sol and the pulp to be refined are mixed, for example by incorporating said silica into the paper pulp to be refined, then the refining is carried out in a conventional manner in a conventional industrial refiner until the desired Shopper-Riegler refining index is obtained, usually of the order of 30 to 40.
  • the pulp thus obtained is then used like conventionally refined pulp.
  • the method according to the invention makes it possible to considerably reduce the duration of refining of paper pulps of various origin.
  • the time saving for obtaining a Shopper-Riegler refining index of the order of 35 is 30 to 35% compared to the process carried out in the absence of colloidal silica sol.
  • the method according to the invention makes it possible to reduce the duration of the refining by 10 minutes, ie a saving of time by approximately 33%.
  • Table I the Shoepper-Riegler refining indices obtained as a function of time are mentioned.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Silicon Compounds (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
EP92400190A 1991-01-31 1992-01-24 Nouveau procédé de raffinage de la pâte à papier Expired - Lifetime EP0497671B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9101108 1991-01-31
FR9101108A FR2672315B1 (fr) 1991-01-31 1991-01-31 Nouveau procede de raffinage de la pate a papier.

Publications (2)

Publication Number Publication Date
EP0497671A1 EP0497671A1 (fr) 1992-08-05
EP0497671B1 true EP0497671B1 (fr) 1995-05-10

Family

ID=9409242

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92400190A Expired - Lifetime EP0497671B1 (fr) 1991-01-31 1992-01-24 Nouveau procédé de raffinage de la pâte à papier

Country Status (7)

Country Link
US (1) US5225041A (fi)
EP (1) EP0497671B1 (fi)
CA (1) CA2060395A1 (fi)
DE (1) DE69202346T2 (fi)
FI (1) FI98078C (fi)
FR (1) FR2672315B1 (fi)
NO (1) NO179459C (fi)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5571494A (en) * 1995-01-20 1996-11-05 J. M. Huber Corporation Temperature-activated polysilicic acids
US6159335A (en) * 1997-02-21 2000-12-12 Buckeye Technologies Inc. Method for treating pulp to reduce disintegration energy
US6074530A (en) * 1998-01-21 2000-06-13 Vinings Industries, Inc. Method for enhancing the anti-skid or friction properties of a cellulosic fiber
US7726592B2 (en) * 2003-12-04 2010-06-01 Hercules Incorporated Process for increasing the refiner production rate and/or decreasing the specific energy of pulping wood
DK2805986T3 (en) 2009-03-30 2017-12-18 Fiberlean Tech Ltd PROCEDURE FOR THE MANUFACTURE OF NANO-FIBRILLARY CELLULOS GELS
EP3617400B1 (en) 2009-03-30 2022-09-21 FiberLean Technologies Limited Use of nanofibrillar cellulose suspensions
GB0908401D0 (en) 2009-05-15 2009-06-24 Imerys Minerals Ltd Paper filler composition
PT2386683E (pt) 2010-04-27 2014-05-27 Omya Int Ag Processo para a produção de materiais compósitos à base de gel
PT2386682E (pt) 2010-04-27 2014-05-27 Omya Int Ag Processo para fabricar materiais estruturados, usando géis de celulose nanofibrilares
GB201019288D0 (en) 2010-11-15 2010-12-29 Imerys Minerals Ltd Compositions
EP3362508B1 (en) 2015-10-14 2019-06-26 FiberLean Technologies Limited 3d-formable sheet material
US11846072B2 (en) 2016-04-05 2023-12-19 Fiberlean Technologies Limited Process of making paper and paperboard products
MX366250B (es) 2016-04-05 2019-07-03 Fiberlean Tech Ltd Productos de papel y carton.
KR102137796B1 (ko) 2016-04-22 2020-07-24 파이버린 테크놀로지스 리미티드 미세섬유화 셀룰로스를 포함하는 섬유 및 그로부터 제조된 섬유 및 부직포 물질의 제조 방법
JP6855903B2 (ja) * 2017-04-24 2021-04-07 セイコーエプソン株式会社 処理装置およびシート製造装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987001746A1 (en) * 1985-09-20 1987-03-26 Scott Paper Company Method of pretreating pulp with stabilizers and peroxide prior to mechanical refining

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023140A (en) * 1958-11-24 1962-02-27 Bauer Bros Co Pulp bleaching
US3069309A (en) * 1961-02-01 1962-12-18 Du Pont Pulp bleaching
SE436368B (sv) * 1979-01-12 1984-12-03 Sunds Defibrator Sett att framstella blekta, mekaniska, kemimekaniska och halvkemiska massor av lignocellulosahaltiga fibermaterial
US4229250A (en) * 1979-02-28 1980-10-21 Valmet Oy Method of improving properties of mechanical paper pulp without chemical reaction therewith
SE8107078L (sv) * 1981-11-27 1983-05-28 Eka Ab Forfarande for papperstillverkning
US4849053A (en) * 1985-09-20 1989-07-18 Scott Paper Company Method for producing pulp using pre-treatment with stabilizers and defibration
US4643801A (en) * 1986-02-24 1987-02-17 Nalco Chemical Company Papermaking aid
US4795531A (en) * 1987-09-22 1989-01-03 Nalco Chemical Company Method for dewatering paper
JP2633671B2 (ja) * 1989-01-18 1997-07-23 日本製紙 株式会社 インクジェット記録用シート

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987001746A1 (en) * 1985-09-20 1987-03-26 Scott Paper Company Method of pretreating pulp with stabilizers and peroxide prior to mechanical refining

Also Published As

Publication number Publication date
NO179459B (no) 1996-07-01
NO920405L (no) 1992-08-03
FI920395A (fi) 1992-08-01
FI920395A0 (fi) 1992-01-29
CA2060395A1 (fr) 1992-08-01
NO920405D0 (no) 1992-01-30
DE69202346T2 (de) 1995-09-28
FI98078B (fi) 1996-12-31
FI98078C (fi) 1997-04-10
FR2672315B1 (fr) 1996-06-07
US5225041A (en) 1993-07-06
DE69202346D1 (de) 1995-06-14
NO179459C (no) 1996-10-09
EP0497671A1 (fr) 1992-08-05
FR2672315A1 (fr) 1992-08-07

Similar Documents

Publication Publication Date Title
EP0497671B1 (fr) Nouveau procédé de raffinage de la pâte à papier
EP0040873B2 (fr) Procédé pour la régénération de vieux papiers
EP0338921B1 (fr) Lessives aqueuses blanchissantes stables au stockage et procédé de lavage
RU96100538A (ru) Способ отбеливания целлюлозы
EP0466615A1 (fr) Procédé pour désencrer les papiers imprimés
EP0148712B1 (fr) Procédé de blanchiment de pâtes papetières par le peroxyde d'hydrogène
EP0553141B1 (fr) Procede pour la preservation des caracteristiques de resistance mecanique des pates a papier chimiques
EP0208625B1 (fr) Traitement de pâtes papetières chimiques par le peroxyde d'hydrogène en vue de leur blanchiment
BE1004674A3 (fr) Procede pour le blanchiment d'une pate a papier chimique et application de ce procede au blanchiment d'une pate kraft.
EP0051509B1 (fr) Compositions stabilisantes pour produits peroxydes
JPS63256786A (ja) パルプ漂白方法
EP3571347B1 (fr) Procede de blanchiment d'une pate a papier
EP0188979B1 (fr) Procédé de préparation d'anthraquinone
EP0351330A1 (fr) Procédé de fabrication de pâtes chimicothermomécaniques blanchies
EP3008240A1 (fr) Procede de traitement des pates papetieres chimiques par traitement a l'ozone en presence d'ions magnesium
EP0034856B1 (fr) Procédé pour inhiber la corrosion d'appareils en titane
EP0293309A1 (fr) Procédé de préparation de pâtes chimicothermomécaniques
EP0096680A1 (fr) Préparation détergente
EP0313478A1 (fr) Procédé de blanchiment de pâtes
FR2776312A1 (fr) Procede de destruction des agents fluorescents contenus dans les vieux papiers par l'acide peracetique
FR2564104A1 (fr) Creme a recurer et procede pour sa preparation.
FR2598727A1 (fr) Procede et composition pour le blanchiment de linge domestique
BE1007757A3 (fr) Procede pour le blanchiment d'une pate a papier chimique.
JP2852105B2 (ja) パルプのオゾン漂白法
FR2512690A1 (fr) Suspensions stables de silico-aluminates de sodium

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): DE FR GB IT SE

17P Request for examination filed

Effective date: 19920904

17Q First examination report despatched

Effective date: 19940607

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT SE

REF Corresponds to:

Ref document number: 69202346

Country of ref document: DE

Date of ref document: 19950614

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

Effective date: 19950519

ITF It: translation for a ep patent filed
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
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19970110

Year of fee payment: 6

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

Ref country code: DE

Payment date: 19970121

Year of fee payment: 6

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

Ref country code: SE

Payment date: 19970123

Year of fee payment: 6

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

Ref country code: FR

Payment date: 19970130

Year of fee payment: 6

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: 19980124

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: 19980125

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

Ref country code: FR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19980131

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

Effective date: 19980124

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: 19981001

EUG Se: european patent has lapsed

Ref document number: 92400190.2

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: 20050124