FI93232C - Menetelmä massan valkaisemiseksi kloorivapailla kemikaaleilla - Google Patents

Menetelmä massan valkaisemiseksi kloorivapailla kemikaaleilla Download PDF

Info

Publication number: FI93232C
Authority: FI; Finland
Prior art keywords: pulp; mass; ozone; adt; range
Prior art date: 1993-03-03

Application number

FI930954A

Other languages

English (en)

Finnish (fi)

Swedish (sv)

Other versions

FI930954A0 (fi

FI930954L (fi

FI93232B (fi

Inventor

Kaj Henricson

Original Assignee

Ahlstroem Oy

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.)

1993-03-03

Filing date

1993-03-03

Publication date

1995-03-10

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8537491&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FI93232(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1993-03-03 Application filed by Ahlstroem Oy filed Critical Ahlstroem Oy

1993-03-03 Priority to FI930954A priority Critical patent/FI93232C/fi

1993-03-03 Publication of FI930954A0 publication Critical patent/FI930954A0/fi

1993-05-25 Priority to AT98113684T priority patent/ATE228181T1/de

1993-05-25 Priority to EP98113684A priority patent/EP0884415B1/fr

1993-05-25 Priority to BR9307858A priority patent/BR9307858A/pt

1993-05-25 Priority to AU53705/94A priority patent/AU5370594A/en

1993-05-25 Priority to EP93910051A priority patent/EP0687321B1/fr

1993-05-25 Priority to AT93910051T priority patent/ATE176808T1/de

1993-05-25 Priority to JP51962394A priority patent/JP3276083B2/ja

1993-05-25 Priority to PCT/FI1993/000222 priority patent/WO1994020673A1/fr

1993-05-25 Priority to PT98113684T priority patent/PT884415E/pt

1993-05-25 Priority to ES93910051T priority patent/ES2130260T3/es

1993-05-25 Priority to FI954093A priority patent/FI954093A7/fi

1993-05-25 Priority to DE69332508T priority patent/DE69332508T2/de

1993-05-25 Priority to DE69323566T priority patent/DE69323566T2/de

1993-05-25 Priority to CA002157109A priority patent/CA2157109C/fr

1993-05-25 Priority to ES98113684T priority patent/ES2186948T3/es

1993-05-25 Priority to RU95122814A priority patent/RU2126471C1/ru

1993-09-15 Priority to FI934036A priority patent/FI98223B/fi

1994-09-04 Publication of FI930954L publication Critical patent/FI930954L/fi

1994-11-30 Publication of FI93232B publication Critical patent/FI93232B/fi

1995-03-10 Publication of FI93232C publication Critical patent/FI93232C/fi

1995-03-10 Application granted granted Critical

1995-09-01 Priority to NO953444A priority patent/NO953444L/no

1997-09-15 Priority to US08/929,082 priority patent/US6010594A/en

Links

238000004061 bleaching Methods 0.000 title claims abstract description 59
238000000034 method Methods 0.000 title claims abstract description 43
230000008569 process Effects 0.000 title claims description 22
239000000126 substance Substances 0.000 title claims description 17
238000005406 washing Methods 0.000 claims abstract description 32
239000000706 filtrate Substances 0.000 claims abstract description 22
CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 79
238000006243 chemical reaction Methods 0.000 claims description 44
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 36
239000001301 oxygen Substances 0.000 claims description 36
229910052760 oxygen Inorganic materials 0.000 claims description 36
150000002978 peroxides Chemical class 0.000 claims description 28
229910001385 heavy metal Inorganic materials 0.000 claims description 25
239000011777 magnesium Substances 0.000 claims description 13
FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 11
239000007789 gas Substances 0.000 claims description 11
229910052749 magnesium Inorganic materials 0.000 claims description 11
239000012159 carrier gas Substances 0.000 claims description 10
239000007795 chemical reaction product Substances 0.000 claims description 9
238000004140 cleaning Methods 0.000 claims description 9
239000000203 mixture Substances 0.000 claims description 7
238000001556 precipitation Methods 0.000 claims description 7
238000000605 extraction Methods 0.000 claims description 6
102000004190 Enzymes Human genes 0.000 claims description 4
108090000790 Enzymes Proteins 0.000 claims description 4
KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 3
239000008139 complexing agent Substances 0.000 claims description 3
230000001681 protective effect Effects 0.000 claims description 2
230000001105 regulatory effect Effects 0.000 claims 8
239000000654 additive Substances 0.000 claims 5
230000000996 additive effect Effects 0.000 claims 5
238000009835 boiling Methods 0.000 claims 1
239000002243 precursor Substances 0.000 claims 1
238000007873 sieving Methods 0.000 claims 1
238000011144 upstream manufacturing Methods 0.000 abstract description 2
239000007788 liquid Substances 0.000 abstract 4
239000002253 acid Substances 0.000 description 7
239000003513 alkali Substances 0.000 description 5
238000010411 cooking Methods 0.000 description 5
ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
239000000460 chlorine Substances 0.000 description 4
229910052801 chlorine Inorganic materials 0.000 description 4
239000007844 bleaching agent Substances 0.000 description 3
239000000835 fiber Substances 0.000 description 3
229920005610 lignin Polymers 0.000 description 3
239000011572 manganese Substances 0.000 description 3
238000011084 recovery Methods 0.000 description 3
CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
238000010790 dilution Methods 0.000 description 2
239000012895 dilution Substances 0.000 description 2
OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
238000010438 heat treatment Methods 0.000 description 2
229910052748 manganese Inorganic materials 0.000 description 2
230000001590 oxidative effect Effects 0.000 description 2
239000012716 precipitator Substances 0.000 description 2
239000000725 suspension Substances 0.000 description 2
235000018185 Betula X alpestris Nutrition 0.000 description 1
235000018212 Betula X uliginosa Nutrition 0.000 description 1
KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
239000004155 Chlorine dioxide Substances 0.000 description 1
230000002378 acidificating effect Effects 0.000 description 1
230000004913 activation Effects 0.000 description 1
230000004888 barrier function Effects 0.000 description 1
230000008859 change Effects 0.000 description 1
235000019398 chlorine dioxide Nutrition 0.000 description 1
150000001875 compounds Chemical class 0.000 description 1
238000005260 corrosion Methods 0.000 description 1
230000007797 corrosion Effects 0.000 description 1
230000008021 deposition Effects 0.000 description 1
238000002474 experimental method Methods 0.000 description 1
239000012467 final product Substances 0.000 description 1
229910052943 magnesium sulfate Inorganic materials 0.000 description 1
235000019341 magnesium sulphate Nutrition 0.000 description 1
238000004519 manufacturing process Methods 0.000 description 1
229910052751 metal Inorganic materials 0.000 description 1
239000002184 metal Substances 0.000 description 1
229910021645 metal ion Inorganic materials 0.000 description 1
150000004045 organic chlorine compounds Chemical class 0.000 description 1
238000010979 pH adjustment Methods 0.000 description 1
230000008447 perception Effects 0.000 description 1
239000000047 product Substances 0.000 description 1
238000004076 pulp bleaching Methods 0.000 description 1
239000002023 wood Substances 0.000 description 1

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
- 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
- D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating 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
- D21C9/1026—Other features in bleaching processes
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
- 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
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
- 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
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
- D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
- 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

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)
Coloring Foods And Improving Nutritive Qualities (AREA)
Detergent Compositions (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

FI930954A 1993-03-03 1993-03-03 Menetelmä massan valkaisemiseksi kloorivapailla kemikaaleilla FI93232C (fi)

Priority Applications (20)

Application Number	Priority Date	Filing Date	Title
FI930954A FI93232C (fi)	1993-03-03	1993-03-03	Menetelmä massan valkaisemiseksi kloorivapailla kemikaaleilla
RU95122814A RU2126471C1 (ru)	1993-03-03	1993-05-25	Способ производства целлюлозы без применения хлорных химикатов
PT98113684T PT884415E (pt)	1993-03-03	1993-05-25	Metodo para a lavagem de polpa em conjunto com o branqueamento
DE69332508T DE69332508T2 (de)	1993-03-03	1993-05-25	Verfahren zum Waschen von Zellstoff beim Bleichen
BR9307858A BR9307858A (pt)	1993-03-03	1993-05-25	Processo para o processamento de polpa que contem metais pesados tais como manganês
AU53705/94A AU5370594A (en)	1993-03-03	1993-05-25	Method of bleaching pulp with chlorine-free chemicals
EP93910051A EP0687321B1 (fr)	1993-03-03	1993-05-25	Procede de blanchiment de pate au moyen de produits chimiques sans chlorure
AT93910051T ATE176808T1 (de)	1993-03-03	1993-05-25	Verfahren zum bleichen von zellstoff mit chlorfreien chemikalien
JP51962394A JP3276083B2 (ja)	1993-03-03	1993-05-25	塩素を含まない薬品によるパルプ漂白法
PCT/FI1993/000222 WO1994020673A1 (fr)	1993-03-03	1993-05-25	Procede de blanchiment de pate au moyen de produits chimiques sans chlorure
AT98113684T ATE228181T1 (de)	1993-03-03	1993-05-25	Verfahren zum waschen von zellstoff beim bleichen
ES93910051T ES2130260T3 (es)	1993-03-03	1993-05-25	Procedimiento de blanqueamiento de pasta de pulpa por medio de productos quimicos libres de cloro.
FI954093A FI954093A7 (fi)	1993-03-03	1993-05-25	Menetelmä massan käsittelemiseksi kloorittomilla kemikaaleilla
EP98113684A EP0884415B1 (fr)	1993-03-03	1993-05-25	Procédé pour le lavage de pâte à papier pendant le blanchiment
DE69323566T DE69323566T2 (de)	1993-03-03	1993-05-25	Verfahren zum bleichen von zellstoff mit chlorfreien chemikalien
CA002157109A CA2157109C (fr)	1993-03-03	1993-05-25	Methode de blanchiment de la pate avec des produits chimiques exempts de chlore
ES98113684T ES2186948T3 (es)	1993-03-03	1993-05-25	Procedimiento para el lavado de pasta de papel durante el blanqueado.
FI934036A FI98223B (fi)	1993-03-03	1993-09-15	Menetelmä massan valkaisemiseksi kloorivapailla kemikaaleilla
NO953444A NO953444L (no)	1993-03-03	1995-09-01	Fremgangsmåte for bleking av masse med klorfrie kjemikalier
US08/929,082 US6010594A (en)	1993-03-03	1997-09-15	Method of bleaching pulp with chlorine-free chemicals wherein a complexing agent is added immediately after an ozone bleach stage

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FI930954A FI93232C (fi)	1993-03-03	1993-03-03	Menetelmä massan valkaisemiseksi kloorivapailla kemikaaleilla
FI930954		1993-03-03

Publications (4)

Publication Number	Publication Date
FI930954A0 FI930954A0 (fi)	1993-03-03
FI930954L FI930954L (fi)	1994-09-04
FI93232B FI93232B (fi)	1994-11-30
FI93232C true FI93232C (fi)	1995-03-10

Family

ID=8537491

Family Applications (3)

Application Number	Title	Priority Date	Filing Date
FI930954A FI93232C (fi)	1993-03-03	1993-03-03	Menetelmä massan valkaisemiseksi kloorivapailla kemikaaleilla
FI954093A FI954093A7 (fi)	1993-03-03	1993-05-25	Menetelmä massan käsittelemiseksi kloorittomilla kemikaaleilla
FI934036A FI98223B (fi)	1993-03-03	1993-09-15	Menetelmä massan valkaisemiseksi kloorivapailla kemikaaleilla

Family Applications After (2)

Application Number	Title	Priority Date	Filing Date
FI954093A FI954093A7 (fi)	1993-03-03	1993-05-25	Menetelmä massan käsittelemiseksi kloorittomilla kemikaaleilla
FI934036A FI98223B (fi)	1993-03-03	1993-09-15	Menetelmä massan valkaisemiseksi kloorivapailla kemikaaleilla

Country Status (13)

Country	Link
EP (2)	EP0884415B1 (fr)
JP (1)	JP3276083B2 (fr)
AT (2)	ATE228181T1 (fr)
AU (1)	AU5370594A (fr)
BR (1)	BR9307858A (fr)
CA (1)	CA2157109C (fr)
DE (2)	DE69332508T2 (fr)
ES (2)	ES2186948T3 (fr)
FI (3)	FI93232C (fr)
NO (1)	NO953444L (fr)
PT (1)	PT884415E (fr)
RU (1)	RU2126471C1 (fr)
WO (1)	WO1994020673A1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FI89516B (fi)	1989-05-10	1993-06-30	Ahlstroem Oy	Foerfarande foer blekning av cellulosamassa med otson
FI103818B (fi) *	1995-02-21	1999-09-30	Ahlstrom Machinery Oy	Menetelmä massan valkaisemiseksi
US20080110584A1 (en) *	2006-11-15	2008-05-15	Caifang Yin	Bleaching process with at least one extraction stage
FR2910027B1 (fr) *	2006-12-13	2009-11-06	Itt Mfg Enterprises Inc	Procede de blanchiment des pates papeteries chimiques par traitement final a l'ozone a haute temperature
FI119062B (fi) *	2006-12-28	2008-07-15	Upm Kymmene Corp	Menetelmä mekaanisen massan valmistamiseksi
KR101866196B1 (ko)	2009-05-28	2018-07-04	게페 첼루로제 게엠베하	화학적 크래프트 섬유로부터의 변형된 셀룰로즈 및 이들을 제조 및 사용하는 방법
WO2012170183A1 (fr)	2011-05-23	2012-12-13	Gp Cellulose Gmbh	Fibre kraft de bois de conifères ayant une blancheur et un éclat améliorés et procédés de fabrication et utilisation de celle-ci
CA2860609C (fr)	2012-01-12	2021-02-16	Gp Cellulose Gmbh	Fibre kraft a faible viscosite ayant des proprietes de jaunissement reduites et ses procedes de fabrication et d'utilisation
CN106968127B (zh)	2012-04-18	2019-03-01	Gp纤维素股份有限公司	用于粘胶溶液的针叶木牛皮纸浆
PL2954115T3 (pl)	2013-02-08	2022-05-02	Gp Cellulose Gmbh	Włókno siarczanowe z drewna iglastego o polepszonej zawartości a-celulozy i jego zastosowanie w wytwarzaniu chemicznych produktów celulozowych
US10138598B2 (en)	2013-03-14	2018-11-27	Gp Cellulose Gmbh	Method of making a highly functional, low viscosity kraft fiber using an acidic bleaching sequence and a fiber made by the process
MX372579B (es)	2013-03-15	2020-04-17	Gp Cellulose Gmbh	Una fibra kraft de baja viscosidad que tiene un contenido de carboxilo mejorado, y metodos para fabricar y usar la misma
FR3007044B1 (fr) *	2013-06-13	2016-01-15	Air Liquide	Procede de traitement des pates papetieres chimiques par traitement a l'ozone en presence d'ions magnesium
AT515152B1 (de) *	2013-11-26	2015-12-15	Chemiefaser Lenzing Ag	Verfahren zum Vorbehandeln von rückgewonnenen Baumwollfasern zur Verwendung bei der Herstellung von Formkörpern aus regenerierter Cellulose
US10865519B2 (en)	2016-11-16	2020-12-15	Gp Cellulose Gmbh	Modified cellulose from chemical fiber and methods of making and using the same
SE544236C2 (en) *	2020-12-21	2022-03-08	Valmet Oy	Method for bleaching pulp from recycled textile material
SE545759C2 (en) *	2022-06-20	2024-01-02	Valmet Oy	Method for bleaching pulp from recycled textile material

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NO144711C (no) *	1978-04-04	1981-10-21	Myrens Verksted As	Fremgangsmaate til bleking av oksygendelignifiserte celluloseholdige masser med ozon
US4310384A (en) *	1979-01-11	1982-01-12	Weyerhaeuser Company	Reducing chemical transfer between treatment stages
FI74752C (fi) *	1986-03-20	1992-12-01	Ahlstroem Oy	Foerfarande och anordning foer tvaettning av cellulosa
DE402335T1 (de) *	1989-06-06	1992-04-09	Eka Nobel Ab, Surte	Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen.
SU1675451A1 (ru) *	1989-09-25	1991-09-07	Центральный научно-исследовательский институт бумаги	Способ подготовки волокнистого полуфабриката к отливу бумажного полотна при изготовлении бумаги
AU636173B2 (en) *	1989-10-30	1993-04-22	Lenzing Aktiengesellschaft	Method for the chlorine-free bleaching of pulps
US5567262A (en) *	1991-04-16	1996-10-22	Ahlstrom Machinery Inc.	Two stage pressure diffuser
SE468355B (sv) *	1991-04-30	1992-12-21	Eka Nobel Ab	Blekning av kemisk massa genom behandling med komplexbildare och ozon
AT400153B (de) *	1991-05-02	1995-10-25	Voest Alpine Ind Anlagen	Verfahren zum bleichen von xylan- und lignocellulosehältigen materialien

1993
- 1993-03-03 FI FI930954A patent/FI93232C/fi active
- 1993-05-25 EP EP98113684A patent/EP0884415B1/fr not_active Expired - Lifetime
- 1993-05-25 FI FI954093A patent/FI954093A7/fi not_active IP Right Cessation
- 1993-05-25 ES ES98113684T patent/ES2186948T3/es not_active Expired - Lifetime
- 1993-05-25 EP EP93910051A patent/EP0687321B1/fr not_active Expired - Lifetime
- 1993-05-25 BR BR9307858A patent/BR9307858A/pt not_active IP Right Cessation
- 1993-05-25 RU RU95122814A patent/RU2126471C1/ru active
- 1993-05-25 AT AT98113684T patent/ATE228181T1/de not_active IP Right Cessation
- 1993-05-25 PT PT98113684T patent/PT884415E/pt unknown
- 1993-05-25 DE DE69332508T patent/DE69332508T2/de not_active Expired - Fee Related
- 1993-05-25 DE DE69323566T patent/DE69323566T2/de not_active Expired - Fee Related
- 1993-05-25 CA CA002157109A patent/CA2157109C/fr not_active Expired - Fee Related
- 1993-05-25 WO PCT/FI1993/000222 patent/WO1994020673A1/fr not_active Ceased
- 1993-05-25 ES ES93910051T patent/ES2130260T3/es not_active Expired - Lifetime
- 1993-05-25 AU AU53705/94A patent/AU5370594A/en not_active Abandoned
- 1993-05-25 JP JP51962394A patent/JP3276083B2/ja not_active Expired - Fee Related
- 1993-05-25 AT AT93910051T patent/ATE176808T1/de not_active IP Right Cessation
- 1993-09-15 FI FI934036A patent/FI98223B/fi not_active IP Right Cessation
1995
- 1995-09-01 NO NO953444A patent/NO953444L/no unknown

Also Published As

Publication number	Publication date
NO953444D0 (no)	1995-09-01
FI930954A0 (fi)	1993-03-03
FI934036A0 (fi)	1993-09-15
DE69332508T2 (de)	2003-07-03
EP0884415B1 (fr)	2002-11-20
EP0884415A1 (fr)	1998-12-16
DE69323566T2 (de)	1999-07-15
ES2186948T3 (es)	2003-05-16
FI930954L (fi)	1994-09-04
EP0687321A1 (fr)	1995-12-20
CA2157109A1 (fr)	1994-09-15
NO953444L (no)	1995-10-19
JP3276083B2 (ja)	2002-04-22
FI93232B (fi)	1994-11-30
FI954093A0 (fi)	1995-08-30
EP0687321B1 (fr)	1999-02-17
DE69323566D1 (de)	1999-03-25
FI98223B (fi)	1997-01-31
ES2130260T3 (es)	1999-07-01
ATE228181T1 (de)	2002-12-15
WO1994020673A1 (fr)	1994-09-15
DE69332508D1 (de)	2003-01-02
ATE176808T1 (de)	1999-03-15
AU5370594A (en)	1994-09-26
BR9307858A (pt)	1996-02-27
JPH08509781A (ja)	1996-10-15
FI934036L (fi)	1994-09-04
CA2157109C (fr)	2002-09-03
FI954093A7 (fi)	1995-10-17
PT884415E (pt)	2003-03-31
RU2126471C1 (ru)	1999-02-20

Legal Events

Date	Code	Title	Description
1994-11-01	BB	Publication of examined application

Publication	Publication Date	Title
FI93232C (fi)	1995-03-10	Menetelmä massan valkaisemiseksi kloorivapailla kemikaaleilla
US6010594A (en)	2000-01-04	Method of bleaching pulp with chlorine-free chemicals wherein a complexing agent is added immediately after an ozone bleach stage
FI108946B (fi)	2002-04-30	Menetelmä massan valkaisemiseksi metallien adsorption yhteydessä
CA2031848C (fr)	1995-11-21	Methode de blanchiment de pate
CA2347454C (fr)	2006-02-07	Methode et appareil pour traiter la pate
JPH1072788A (ja)	1998-03-17	化学パルプ製造中に遷移金属イオンを最小限にする方法およびそのパルプ
EP1644574B1 (fr)	2013-03-06	Procede de traitement de pate relie au blanchiment de pate chimique
EP0846199B1 (fr)	2001-01-24	Traitement d'une pate a papier avec un agent chelatant en au moins deux etapes de melange, sans lavage intermediaire
EP0951599B1 (fr)	2003-05-28	Traitement de pate avec un chelateur sans utiliser de tour de blanchiment
JP2001519858A (ja)	2001-10-23	酸素による漂白プラントの濾液の処理
US6375797B1 (en)	2002-04-23	Bleaching chemical pulp in a PkDQ-Po Sequence
FI119556B (fi)	2008-12-31	Menetelmä massan käsittelemiseksi prosessin suodoksella
JPH09504582A (ja)	1997-05-06	パルプから金属イオンを分離する方法
FI102193B (fi)	1998-10-30	Menetelmä ja laitteisto massan käsittelemiseksi
WO1998014657A1 (fr)	1998-04-09	Oxydation des ions metal perturbateurs dans des procedes de blanchiment
CA2179700A1 (fr)	1996-12-22	Procede et dispositif de traitement de pate a papier