SE9203585L - Delignifiering och blekning av lignocellulosahaltig massa med persyra och klorfritt blekmedel - Google Patents
Delignifiering och blekning av lignocellulosahaltig massa med persyra och klorfritt blekmedelInfo
- Publication number
- SE9203585L SE9203585L SE9203585A SE9203585A SE9203585L SE 9203585 L SE9203585 L SE 9203585L SE 9203585 A SE9203585 A SE 9203585A SE 9203585 A SE9203585 A SE 9203585A SE 9203585 L SE9203585 L SE 9203585L
- Authority
- SE
- Sweden
- Prior art keywords
- peracid
- pulp
- delignification
- bleaching
- chlorine
- 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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids
-
- 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
- D21C9/147—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)
Priority Applications (20)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9203585A SE500605C2 (sv) | 1992-11-27 | 1992-11-27 | Delignifiering och blekning av lignocellulosahaltig massa med persyra och klorfritt blekmedel |
ZA938748A ZA938748B (en) | 1992-11-27 | 1993-11-23 | Process for delignification of lignocellulose-containing pulp |
RU9595114367A RU2097462C1 (ru) | 1992-11-27 | 1993-11-25 | Способ делигнификации и отбеливания лигноцеллюлозосодержащей пульпы |
AT94901143T ATE146833T1 (de) | 1992-11-27 | 1993-11-25 | Verfahren zur deligrifizierung von lignocellulosehaltigem zellstoff |
CA002149648A CA2149648C (en) | 1992-11-27 | 1993-11-25 | Process for delignification of lignocellulose-containing pulp |
NZ258274A NZ258274A (en) | 1992-11-27 | 1993-11-25 | Delignifying and bleaching lignocellulose pulp using peracid delignification followed by treatment with a complexing agent then a chlorine-free bleach |
JP6513052A JP2864167B2 (ja) | 1992-11-27 | 1993-11-25 | リグノセルロース含有パルプの脱リグニン化法 |
AU55832/94A AU670659B2 (en) | 1992-11-27 | 1993-11-25 | Process for delignification of lignocellulose-containing pulp |
ES94901143T ES2096441T3 (es) | 1992-11-27 | 1993-11-25 | Procedimiento para deslignificar pasta que contiene lignocelulosa. |
BR9307521-9A BR9307521A (pt) | 1992-11-27 | 1993-11-25 | Processo para a deslignificação e alvejamento de polpa contendo lignocelulose |
EP94901143A EP0670928B2 (en) | 1992-11-27 | 1993-11-25 | Process for delignification of lignocellulose-containing pulp |
PCT/SE1993/001019 WO1994012721A1 (en) | 1992-11-27 | 1993-11-25 | Process for delignification of lignocellulose-containing pulp |
CZ951329A CZ282692B6 (cs) | 1992-11-27 | 1993-11-25 | Způsob delignifikace buničiny obsahující lignocelulozu |
MX9307415A MX9307415A (es) | 1992-11-27 | 1993-11-25 | Proceso para la deslignificacion de pulpa que contiene lignocelulosa. |
DE69306974T DE69306974T3 (de) | 1992-11-27 | 1993-11-25 | Verfahren zur deligrifizierung von lignocellulosehaltigem zellstoff |
US08/436,243 US5785812A (en) | 1992-11-27 | 1993-11-25 | Process for treating oxygen delignified pulp using an organic peracid or salt, complexing agent and peroxide bleach sequence |
PL93309191A PL309191A1 (en) | 1992-11-27 | 1993-11-25 | Method delignifying a lignocellulose containing pulp |
FI952552A FI118571B (sv) | 1992-11-27 | 1995-05-24 | Förfarande för delignifiering av lignocellulosahaltig massa |
NO952076A NO307260B1 (no) | 1992-11-27 | 1995-05-26 | Fremgangsmåte ved delignifisering og bleking av lignocelluloseholdig masse |
US09/026,510 US6007678A (en) | 1992-11-27 | 1998-02-19 | Process for delignification of lignocellulose-containing pulp with an organic peracid or salts thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9203585A SE500605C2 (sv) | 1992-11-27 | 1992-11-27 | Delignifiering och blekning av lignocellulosahaltig massa med persyra och klorfritt blekmedel |
Publications (3)
Publication Number | Publication Date |
---|---|
SE9203585D0 SE9203585D0 (sv) | 1992-11-27 |
SE9203585L true SE9203585L (sv) | 1994-05-28 |
SE500605C2 SE500605C2 (sv) | 1994-07-25 |
Family
ID=20387965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9203585A SE500605C2 (sv) | 1992-11-27 | 1992-11-27 | Delignifiering och blekning av lignocellulosahaltig massa med persyra och klorfritt blekmedel |
Country Status (3)
Country | Link |
---|---|
RU (1) | RU2097462C1 (sv) |
SE (1) | SE500605C2 (sv) |
ZA (1) | ZA938748B (sv) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI127996B (sv) | 2016-07-01 | 2019-07-15 | Kemira Oyj | Process för behandling av cellulosa |
-
1992
- 1992-11-27 SE SE9203585A patent/SE500605C2/sv not_active IP Right Cessation
-
1993
- 1993-11-23 ZA ZA938748A patent/ZA938748B/xx unknown
- 1993-11-25 RU RU9595114367A patent/RU2097462C1/ru active
Also Published As
Publication number | Publication date |
---|---|
RU2097462C1 (ru) | 1997-11-27 |
SE500605C2 (sv) | 1994-07-25 |
SE9203585D0 (sv) | 1992-11-27 |
RU95114367A (ru) | 1996-12-27 |
ZA938748B (en) | 1994-06-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |