SE8803705L - Saett vid oxygenblekning - Google Patents
Saett vid oxygenblekningInfo
- Publication number
- SE8803705L SE8803705L SE8803705A SE8803705A SE8803705L SE 8803705 L SE8803705 L SE 8803705L SE 8803705 A SE8803705 A SE 8803705A SE 8803705 A SE8803705 A SE 8803705A SE 8803705 L SE8803705 L SE 8803705L
- Authority
- SE
- Sweden
- Prior art keywords
- delignification zone
- temperature
- pulp
- delignification
- zone
- 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
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8803705A SE467582B (sv) | 1988-10-18 | 1988-10-18 | Saett vid oxygenblekning |
CA000614212A CA1337843C (en) | 1988-10-18 | 1989-09-28 | Process for oxygen bleaching |
JP1269259A JPH02145883A (ja) | 1988-10-18 | 1989-10-18 | 繊維質セルロースパルプの酸素漂白方法 |
FI894949A FI91896C (sv) | 1988-10-18 | 1989-10-18 | Sätt vid oxygenblekning |
US07/857,121 US5217575A (en) | 1988-10-18 | 1992-03-24 | Process for oxygen bleaching using two vertical reactors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8803705A SE467582B (sv) | 1988-10-18 | 1988-10-18 | Saett vid oxygenblekning |
Publications (3)
Publication Number | Publication Date |
---|---|
SE8803705D0 SE8803705D0 (sv) | 1988-10-18 |
SE8803705L true SE8803705L (sv) | 1990-04-19 |
SE467582B SE467582B (sv) | 1992-08-10 |
Family
ID=20373661
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8803705A SE467582B (sv) | 1988-10-18 | 1988-10-18 | Saett vid oxygenblekning |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPH02145883A (sv) |
CA (1) | CA1337843C (sv) |
FI (1) | FI91896C (sv) |
SE (1) | SE467582B (sv) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE510740C2 (sv) * | 1996-11-26 | 1999-06-21 | Sunds Defibrator Ind Ab | Styrning av syrgasdelignifiering |
SE522593C2 (sv) * | 1999-07-06 | 2004-02-24 | Kvaerner Pulping Tech | System och förfarande för syragasdelignifiering av massa av lignocellulosahaltigt material |
RU2479619C2 (ru) * | 2009-11-17 | 2013-04-20 | Феликс Фердинандович Аухадеев | Пульсационное устройство для делигнификации целлюлозосодержащего растительного сырья и способ его работы |
-
1988
- 1988-10-18 SE SE8803705A patent/SE467582B/sv not_active IP Right Cessation
-
1989
- 1989-09-28 CA CA000614212A patent/CA1337843C/en not_active Expired - Lifetime
- 1989-10-18 FI FI894949A patent/FI91896C/sv active IP Right Grant
- 1989-10-18 JP JP1269259A patent/JPH02145883A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
FI91896C (sv) | 1994-08-25 |
JPH02145883A (ja) | 1990-06-05 |
FI91896B (sv) | 1994-05-13 |
CA1337843C (en) | 1996-01-02 |
SE8803705D0 (sv) | 1988-10-18 |
SE467582B (sv) | 1992-08-10 |
FI894949A0 (sv) | 1989-10-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES8200158A1 (es) | Procedimiento y aparato para la deslignificacion continua con oxigeno de pulpas de consistencia media | |
ES8102237A1 (es) | Procedimiento para la deslignificacion y el blanqueo de pas-tas celulosicas quimicas y semi-quimicas | |
SE8804578D0 (sv) | Saett vid kontinuerlig uppslutningskokning av cellulosahaltigt fibermaterial | |
GB1509568A (en) | Delignification and bleaching of cellulose pulp with oxygen | |
SE7705513L (sv) | Forfarande for reglering av tillforseln av reaktionskemikalier vid delignifiering av cellulosamaterial | |
ES8701263A1 (es) | Procedimiento para controlar un proceso de blanqueo al oxi- geno para celulosa | |
ES432183A1 (es) | Procedimiento para la digestion discontinua de pasta de ma-dera. | |
SE9602017D0 (sv) | Method and apparatus for pulping sawdust | |
US5217575A (en) | Process for oxygen bleaching using two vertical reactors | |
SE8105552L (sv) | Forfarande vid delignifierande blekning av cellulosamassa | |
ES8704569A1 (es) | Procedimiento de disgregacion con sulfito para la preparacion de celulosa a partir de materiales que contienen lignocelulosa con recuperacion de los productos quimicos de disgregacion | |
NO912641L (no) | Kontinuerlig, totrinns blekeprosess for papirmasse. | |
SE8803705L (sv) | Saett vid oxygenblekning | |
ES484228A1 (es) | Un procedimiento de tratamiento de una materia prima que contiene fibras de celulosa para la produccion de pasta de papel | |
SE0200185D0 (sv) | Förfarande vid kontinuerlig kokning av cellulosa | |
ES345665A1 (es) | Procedimiento para desecar y blanquear simultaneamente pas-ta mecanica de madera. | |
ES322925A1 (es) | Procedimiento para blanquear reductivamente pulpas de madera de bajo contenido celulosico. | |
NO951644L (no) | Fremgangsmåte assosiert med forgassing av celluloseavlut | |
ATE84582T1 (de) | Regelung der peroxidbleiche verschiedener papierfaserstoffe. | |
ATE199952T1 (de) | Verfahren und vorrichtung zum kontinuierlichen herstellen von zellstoffbrei | |
US4115186A (en) | Process for bleaching cellulose pulp with molecular oxygen | |
SE8306853D0 (sv) | Sett vid kontinuerlig uppslutning av finfordelat cellulosahaltigt material | |
FR2288816A1 (fr) | Procede pour commander l'amenee de reactifs chimiques aux systemes de delignification et de blanchiment de pate | |
SE7506844L (sv) | Forfarande for automatisk reglering av doseringen av tva kemikalier | |
FR2281455A1 (fr) | Procede et appareil de trituration de matieres premieres cellulosiques |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAL | Patent in force |
Ref document number: 8803705-6 Format of ref document f/p: F |
|
NUG | Patent has lapsed |