AR247258A1 - Procedimiento para blanquear una pasta de papel quimica - Google Patents
Procedimiento para blanquear una pasta de papel quimicaInfo
- Publication number
- AR247258A1 AR247258A1 AR93325341A AR32534193A AR247258A1 AR 247258 A1 AR247258 A1 AR 247258A1 AR 93325341 A AR93325341 A AR 93325341A AR 32534193 A AR32534193 A AR 32534193A AR 247258 A1 AR247258 A1 AR 247258A1
- Authority
- AR
- Argentina
- Prior art keywords
- hydrogen peroxide
- final stage
- bleaching
- exceed
- weight
- Prior art date
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
- D21C9/1057—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
- D21C9/16—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)
Abstract
PROCEDIMIENTO PARA EL BLANQUEADO DE UNA PASTA DE PAPEL QUIMICA QUE PERMITE LA OBTENCION DE NIVELES DE BLANCURA ELEVADOS DE 89*ISO, QUE CONSISTE EN SOMETER LA PASTA A UNA SECUENCIA DE TRATAMIENTOEN VARIAS ETAPAS INCLUYENDO UNA ETAPA FINAL CON PEROXIDO DE HIDROGENO EN UN MEDIO ALCALINO, LA ETAPA FINAL CON PEROXIDO DE HIDROGENO SE EFECTUA EN PRESENCIA DE UN AGENTE ESTABILIZADOR Y CON UNA CONSISTENCIA DE LA PASTA DE 25% POR PESO DE MATERIA SECA, PORQUE LA PASTA SOMETIDA A LA ETAPA FINAL DE PEROXIDO DE HIDROGENO HA SIDO DEPURADA EN LAS ETAPAS PRECEDENTES DE MANERA QUE SU TENOR DE MANGANESO NO SOBREPASA LOS 3PPM EN PESO EN RELACION AL MATERIAL SECO Y HA SIDO DESLIGNIFICADA HASTA UN INDICE KAPPA QUE NO SOBREPASA 5.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE9200626A BE1006056A3 (fr) | 1992-07-06 | 1992-07-06 | Procede pour le blanchiment d'une pate a papier chimique. |
Publications (1)
Publication Number | Publication Date |
---|---|
AR247258A1 true AR247258A1 (es) | 1994-11-30 |
Family
ID=3886354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AR93325341A AR247258A1 (es) | 1992-07-06 | 1993-07-05 | Procedimiento para blanquear una pasta de papel quimica |
Country Status (15)
Country | Link |
---|---|
US (1) | US6221209B1 (es) |
EP (1) | EP0578304B1 (es) |
JP (1) | JPH06166981A (es) |
AR (1) | AR247258A1 (es) |
AT (1) | ATE143074T1 (es) |
AU (1) | AU654623B2 (es) |
BE (1) | BE1006056A3 (es) |
BR (1) | BR9302764A (es) |
CA (1) | CA2099827A1 (es) |
DE (1) | DE69304822T2 (es) |
ES (1) | ES2094465T3 (es) |
FI (1) | FI111170B (es) |
NZ (1) | NZ248029A (es) |
SI (1) | SI9300362A (es) |
SK (1) | SK70293A3 (es) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE500616C2 (sv) * | 1993-06-08 | 1994-07-25 | Kvaerner Pulping Tech | Blekning av kemisk massa med peroxid vid övertryck |
US6605181B1 (en) * | 1993-10-01 | 2003-08-12 | Kvaerner Pulping Aktiebolag | Peroxide bleach sequence including an acidic bleach stage and including a wash stage |
BE1007757A3 (fr) * | 1993-11-10 | 1995-10-17 | Solvay Interox | Procede pour le blanchiment d'une pate a papier chimique. |
FR2719853B1 (fr) * | 1994-05-11 | 1996-06-21 | Atochem Elf Sa | Procédé de délignification et de blanchiment d'une pâte à papier chimique. |
FR2719854B1 (fr) * | 1994-05-11 | 1996-06-21 | Atochem Elf Sa | Procédé de préparation de pâtes à papier chimiques délignifiées et blanchies. |
JP2926518B2 (ja) * | 1994-07-11 | 1999-07-28 | ベロイト・テクノロジーズ・インコーポレイテッド | リグニンセルロース、セルロース及び合成高分子繊維材料の高効率漂白方法 |
ZA955290B (en) * | 1994-07-11 | 1996-12-27 | Ingersoll Rand Co | Peroxide bleaching process for cellulosic and lignocellulosic material |
US7001484B2 (en) | 2000-05-04 | 2006-02-21 | University Of New Brunswick | Peroxide bleaching of wood pulp using stabilizers and sodium hydrosulfide reducing agent |
US7351764B2 (en) * | 2004-03-31 | 2008-04-01 | Nalco Company | Methods to enhance brightness of pulp and optimize use of bleaching chemicals |
FR2912407B1 (fr) * | 2007-02-14 | 2010-10-08 | Arkema France | Procede de fonctionnalisation des carbohydrates. |
EP2113044A1 (en) * | 2007-02-21 | 2009-11-04 | SOLVAY (Société Anonyme) | Process for the bleaching of paper pulp |
CA2709526C (en) * | 2007-12-20 | 2016-02-02 | Mitsubishi Gas Chemical Company Inc. | Process for production of bleached pulp |
EP2082991A1 (en) | 2008-01-22 | 2009-07-29 | Thermphos Trading GmbH | Method of Water Treatment |
EP2090646A1 (en) | 2008-01-22 | 2009-08-19 | Thermphos Trading GmbH | Surface treatment composition containing phosphonic acid compounds |
SE532370C2 (sv) * | 2008-02-28 | 2009-12-29 | Metso Paper Inc | Metod för blekning av en massa |
EP2128331A1 (en) | 2008-05-26 | 2009-12-02 | SOLVAY (Société Anonyme) | Process for the bleaching of paper pulp |
US8034759B2 (en) * | 2008-10-31 | 2011-10-11 | Ecolab Usa Inc. | Enhanced stability peracid compositions |
US8845860B2 (en) | 2010-09-16 | 2014-09-30 | Georgia-Pacific Consumer Products Lp | High brightness pulps from lignin rich waste papers |
EP3800290B1 (en) | 2012-01-12 | 2023-11-01 | GP Cellulose GmbH | A low viscosity kraft fiber having reduced yellowing properties and methods of making and using the same |
RU2017128939A (ru) | 2012-04-18 | 2019-02-04 | ДжиПи СЕЛЛЬЮЛОУС ГМБХ | Использование поверхностно-активного вещества для обработки пульпы и улучшение введения крафт-пульпы в волокно для получения вискозы и других вторичных волокнистых продуктов |
MX2022003094A (es) * | 2019-09-11 | 2022-04-11 | Nicoventures Trading Ltd | Metodos alternativos para blanquear el tabaco. |
US11937626B2 (en) | 2020-09-04 | 2024-03-26 | Nicoventures Trading Limited | Method for whitening tobacco |
Family Cites Families (10)
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 |
GB8620222D0 (en) * | 1986-08-20 | 1986-10-01 | Abitibi Price Inc | Peroxide bleaching |
CA2005369A1 (en) * | 1988-12-20 | 1990-06-20 | Madhusudan D. Jayawant | Process for improved alkaline oxidative delignification of cellulose pulp |
US4946556A (en) * | 1989-04-25 | 1990-08-07 | Kamyr, Inc. | Method of oxygen delignifying wood pulp with between stage washing |
EP0402335B2 (en) * | 1989-06-06 | 2001-03-14 | Eka Chemicals AB | Process for bleaching lignocellulose-containing pulps |
US5091054A (en) * | 1989-08-18 | 1992-02-25 | Degussa Corporation | Process for bleaching and delignification of lignocellulosic |
US5246543A (en) * | 1989-08-18 | 1993-09-21 | Degussa Corporation | Process for bleaching and delignification of lignocellulosic materials |
AT395028B (de) * | 1990-02-07 | 1992-08-25 | Chemiefaser Lenzing Ag | Verfahren zum chlorfreien bleichen von kunstfaserzellstoff |
CA2099881A1 (en) * | 1991-01-03 | 1992-07-04 | Omar F. Ali | Chlorine-free process for bleaching lignocellulosic pulp |
SE469842C (sv) * | 1992-01-21 | 1996-01-15 | Sunds Defibrator Ind Ab | Blekning av kemisk massa med peroxid |
-
1992
- 1992-07-06 BE BE9200626A patent/BE1006056A3/fr not_active IP Right Cessation
-
1993
- 1993-06-29 AT AT93201886T patent/ATE143074T1/de not_active IP Right Cessation
- 1993-06-29 EP EP93201886A patent/EP0578304B1/fr not_active Expired - Lifetime
- 1993-06-29 US US08/083,183 patent/US6221209B1/en not_active Expired - Fee Related
- 1993-06-29 ES ES93201886T patent/ES2094465T3/es not_active Expired - Lifetime
- 1993-06-29 DE DE69304822T patent/DE69304822T2/de not_active Expired - Fee Related
- 1993-06-30 NZ NZ248029A patent/NZ248029A/en unknown
- 1993-07-02 SK SK702-93A patent/SK70293A3/sk unknown
- 1993-07-02 AU AU41705/93A patent/AU654623B2/en not_active Ceased
- 1993-07-05 AR AR93325341A patent/AR247258A1/es active
- 1993-07-05 CA CA002099827A patent/CA2099827A1/fr not_active Abandoned
- 1993-07-05 BR BR9302764A patent/BR9302764A/pt not_active Application Discontinuation
- 1993-07-06 FI FI933103A patent/FI111170B/fi active
- 1993-07-06 SI SI9300362A patent/SI9300362A/sl unknown
- 1993-07-06 JP JP5167132A patent/JPH06166981A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
ATE143074T1 (de) | 1996-10-15 |
FI933103A0 (fi) | 1993-07-06 |
DE69304822D1 (de) | 1996-10-24 |
SK70293A3 (en) | 1994-04-06 |
NZ248029A (en) | 1995-10-26 |
BE1006056A3 (fr) | 1994-05-03 |
FI111170B (fi) | 2003-06-13 |
ES2094465T3 (es) | 1997-01-16 |
EP0578304A1 (fr) | 1994-01-12 |
SI9300362A (en) | 1994-03-31 |
AU4170593A (en) | 1994-01-13 |
CA2099827A1 (fr) | 1994-01-07 |
EP0578304B1 (fr) | 1996-09-18 |
AU654623B2 (en) | 1994-11-10 |
US6221209B1 (en) | 2001-04-24 |
DE69304822T2 (de) | 1997-04-10 |
BR9302764A (pt) | 1994-02-08 |
FI933103A (fi) | 1994-01-07 |
JPH06166981A (ja) | 1994-06-14 |
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