ES2002249A4 - Procedimiento de blanqueo de un material lignocelulosico. - Google Patents
Procedimiento de blanqueo de un material lignocelulosico.Info
- Publication number
- ES2002249A4 ES2002249A4 ES87420244T ES87420244T ES2002249A4 ES 2002249 A4 ES2002249 A4 ES 2002249A4 ES 87420244 T ES87420244 T ES 87420244T ES 87420244 T ES87420244 T ES 87420244T ES 2002249 A4 ES2002249 A4 ES 2002249A4
- Authority
- ES
- Spain
- Prior art keywords
- lignocellulosic material
- treatment
- bleaching procedure
- reducing agent
- agent
- 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.)
- Granted
Links
- 238000004061 bleaching Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 239000012978 lignocellulosic material Substances 0.000 title 1
- 239000003638 chemical reducing agent Substances 0.000 abstract 2
- 230000002087 whitening effect Effects 0.000 abstract 2
- 239000011230 binding agent Substances 0.000 abstract 1
- 239000007800 oxidant agent Substances 0.000 abstract 1
- 238000002203 pretreatment Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 230000000930 thermomechanical effect Effects 0.000 abstract 1
- 230000009466 transformation Effects 0.000 abstract 1
- 239000002023 wood Substances 0.000 abstract 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
- D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Abstract
PROCESO DE BLANQUEAMIENTO DE PASTAS DE PAPEL MECANICAS, TERMOMECANICAS, QUIMIOMECANICAS, O DE VIRUTAS DE MADERA EN FASE DE TRANSFORMACION EN UNO DE ESTOS TIPOS DE PASTA QUE TENGA AL MENOS DOS SUPERFICIES HELICOIDALES PENETRANDO LA UNA EN LA OTRA, EN LA CUAL LA MATERIA LIGNOCELULOSICA, DESPUES DEL PRETRATAMIENTO DE AL MENOS UN AGENTE ENLAZANTE O SECUESTRADOR DE METALES, ESTA SOMETIDA A UN LAVADO DE EFICACIA SUPERIOR AL 96% ANTES DE SER SOMETIDA SUCESIVAMENTE A UN TRATAMIENTO DE BLANQUEAMIENTO POR MEDIO DE UN AGENTE REDUCTOR CON UN PH COMPRENDIDO ENTRE 8 Y 12, A UN LAVADO PARA ELIMINAR EL AGENTE REDUCTOR Y A UN TRATAMIENTO DE BLANQUEAMIENTO POR MEDIO DE UN AGENTE OXIDANTE.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8613546A FR2604197B1 (fr) | 1986-09-23 | 1986-09-23 | Procede de blanchiment de matieres lignocellulosiques. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2002249A4 true ES2002249A4 (es) | 1988-08-01 |
| ES2002249B3 ES2002249B3 (es) | 1991-11-16 |
Family
ID=9339347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES87420244T Expired - Lifetime ES2002249B3 (es) | 1986-09-23 | 1987-09-18 | Proceso de blanqueamiento de materias lignocelulosicas. |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4812206A (es) |
| EP (1) | EP0263040B1 (es) |
| JP (1) | JPS6399388A (es) |
| CA (1) | CA1302018C (es) |
| ES (1) | ES2002249B3 (es) |
| FI (1) | FI86443C (es) |
| FR (1) | FR2604197B1 (es) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2583226B2 (ja) * | 1987-02-24 | 1997-02-19 | 新王子製紙株式会社 | 中性紙の製造方法 |
| JPH0197291A (ja) * | 1987-10-05 | 1989-04-14 | Fmc Corp | 機械パルプの漂白方法 |
| FR2639371B1 (fr) * | 1988-11-24 | 1995-04-14 | Atochem | Procede de blanchiment de pates desencrees |
| FR2659363B1 (fr) * | 1990-03-07 | 1996-04-19 | Atochem | Procede de preparation de pates a haut rendement blanchies. |
| US5169555A (en) * | 1990-11-09 | 1992-12-08 | Morton International, Inc. | Pulp bleaching solution |
| SE468355B (sv) * | 1991-04-30 | 1992-12-21 | Eka Nobel Ab | Blekning av kemisk massa genom behandling med komplexbildare och ozon |
| US5213836A (en) * | 1991-09-18 | 1993-05-25 | American Crystal Sugar Company | Method of preparation of sugar beet fiber material |
| AU1357097A (en) * | 1996-02-27 | 1997-09-16 | Tetra Laval Holdings & Finance Sa | Process for sanitizing post-consumer paper fibers and product formed therefrom |
| US7001484B2 (en) * | 2000-05-04 | 2006-02-21 | University Of New Brunswick | Peroxide bleaching of wood pulp using stabilizers and sodium hydrosulfide reducing agent |
| US6743332B2 (en) * | 2001-05-16 | 2004-06-01 | Weyerhaeuser Company | High temperature peroxide bleaching of mechanical pulps |
| US6881299B2 (en) * | 2001-05-16 | 2005-04-19 | North American Paper Corporation | Refiner bleaching with magnesium oxide and hydrogen peroxide |
| US7384502B2 (en) * | 2002-12-24 | 2008-06-10 | Nippon Paper Industries Co., Ltd. | Process for impregnating, refining, and bleaching wood chips having low bleachability to prepare mechanical pulps having high brightness |
| SE528348C2 (sv) * | 2004-09-21 | 2006-10-24 | Noss Ab | Förfarande och anordning för att tillverka cellulosamassa |
| JP4517933B2 (ja) * | 2005-04-27 | 2010-08-04 | 王子製紙株式会社 | コールドセット型オフセット用新聞用紙 |
| US8262851B2 (en) * | 2006-08-10 | 2012-09-11 | Andritz Inc. | Processes and systems for the pulping of lignocellulosic materials |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2290601A (en) * | 1940-02-16 | 1942-07-21 | Du Pont | Bleaching of ground wood pulp with preliminary bisulphite treatment |
| DE834808C (de) * | 1950-08-31 | 1952-03-24 | Degussa | Verfahren zum Bleichen von mechanisch erzeugten, schwer bleichbaren Faserstoffen, insbesondere Holzschliff |
| FR1201712A (fr) * | 1958-07-11 | 1960-01-05 | Fr Du Xylon Soc | Perfectionnements au blanchiment des pâtes cellulosiques |
| DE1171723B (de) * | 1958-11-27 | 1964-06-04 | Mo Och Domsjoe Ab | Verfahren zum Veredeln von cellulose-haltigem Material |
| DE1173172B (de) * | 1962-04-11 | 1964-07-02 | Siemens Ag | Verfahren zur Abschaltung einpolig erdschlussbehafteter unbelasteter Drehstrom-leitungen mit Spannungen hoeher 5 kV und niederohmig induktiv geerdetem Sternpunkt |
| SE413684C (sv) * | 1974-09-23 | 1987-05-18 | Mo Och Domsjoe Ab | Forfarande for framstellning av cellulosamassa i utbytesomradet 65-95 % |
| FR2451963A1 (fr) * | 1979-03-22 | 1980-10-17 | Creusot Loire | Procede et installation de preparation et de lavage d'une pate a papier a partir d'une matiere lignocellulosique reduite en morceaux |
| CA1249402A (en) * | 1984-12-21 | 1989-01-31 | Pulp And Paper Research Institute Of Canada | Multistage brightening of high yield and ultra high- yield wood pulps |
-
1986
- 1986-09-23 FR FR8613546A patent/FR2604197B1/fr not_active Expired
-
1987
- 1987-09-18 EP EP87420244A patent/EP0263040B1/fr not_active Expired - Lifetime
- 1987-09-18 ES ES87420244T patent/ES2002249B3/es not_active Expired - Lifetime
- 1987-09-22 FI FI874141A patent/FI86443C/fi not_active IP Right Cessation
- 1987-09-22 US US07/099,762 patent/US4812206A/en not_active Expired - Lifetime
- 1987-09-22 CA CA000547509A patent/CA1302018C/fr not_active Expired - Lifetime
- 1987-09-22 JP JP62238581A patent/JPS6399388A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2604197B1 (fr) | 1988-11-18 |
| JPS6399388A (ja) | 1988-04-30 |
| EP0263040A1 (fr) | 1988-04-06 |
| US4812206A (en) | 1989-03-14 |
| FI874141L (fi) | 1988-03-24 |
| FR2604197A1 (fr) | 1988-03-25 |
| EP0263040B1 (fr) | 1991-01-09 |
| FI86443C (fi) | 1992-08-25 |
| ES2002249B3 (es) | 1991-11-16 |
| CA1302018C (fr) | 1992-06-02 |
| FI874141A0 (fi) | 1987-09-22 |
| FI86443B (fi) | 1992-05-15 |
| JPH0210275B2 (es) | 1990-03-07 |
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