AR247257A1 - Process for bleaching and delignifying chemical paper pulp - Google Patents
Process for bleaching and delignifying chemical paper pulpInfo
- Publication number
- AR247257A1 AR247257A1 AR92322455A AR32245592A AR247257A1 AR 247257 A1 AR247257 A1 AR 247257A1 AR 92322455 A AR92322455 A AR 92322455A AR 32245592 A AR32245592 A AR 32245592A AR 247257 A1 AR247257 A1 AR 247257A1
- Authority
- AR
- Argentina
- Prior art keywords
- bleaching
- paper pulp
- chemical paper
- stage
- delignifying chemical
- 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
- D21C9/147—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
- D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Abstract
PROCEDIMIENTO PARA EL BLANQUEO Y LA DESLIGNIFICACION DE UNA PASTA DE PAPEL QUIMICA POR MEDIO DE UNA SECUENCIA DE TRES ETAPAS DE TRATAMIENTO QUE NO RECURRE A REACTIVOS CLORADOS; EN UNA PRIMERA ETAPA, SE TRATA DE PASTA CRUDA POR MEDIO DE OXIGENO GASEOSO Y, EN LAS ETAPAS SEGUNDA Y TERCERA SE TRATA LA PASTA PROVENIENTE DE LA PRIMERA ETAPA CON, RESPECTIVAMENTE Y EN UN ORDEN INDIFERENTE, OZONO GASEOSO Y ACIDO PEROXIMONOSULFURICO O UNA DE SUS SALES.PROCEDURE FOR THE BLEACHING AND THE DE-LIGNIFICATION OF A CHEMICAL PAPER PULP THROUGH A THREE-STAGE SEQUENCE OF TREATMENT THAT DOES NOT USE A CHLORINATED REAGENT; IN A FIRST STAGE, IT IS ABOUT CRUDE PASTE BY MEANS OF GASEOUS OXYGEN AND, IN THE SECOND AND THIRD STAGES, THE PASTA FROM THE FIRST STAGE IS TREATED WITH, RESPECTIVELY AND IN AN INDIFFERENT ORDER, A GASEOUS OZONE AND A PEROXIMAL ACID YOU GO OUT.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE9100549A BE1004974A3 (en) | 1991-06-06 | 1991-06-06 | Method for laundering and pasta delignification paper chemicals and application this method of laundering and the delignification of kraft pulp and pulp asam. |
Publications (1)
Publication Number | Publication Date |
---|---|
AR247257A1 true AR247257A1 (en) | 1994-11-30 |
Family
ID=3885547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AR92322455A AR247257A1 (en) | 1991-06-06 | 1992-06-02 | Process for bleaching and delignifying chemical paper pulp |
Country Status (16)
Country | Link |
---|---|
EP (1) | EP0587822B1 (en) |
JP (1) | JPH06507683A (en) |
AR (1) | AR247257A1 (en) |
AT (1) | ATE127179T1 (en) |
AU (1) | AU651462B2 (en) |
BE (1) | BE1004974A3 (en) |
BR (1) | BR9206112A (en) |
CA (1) | CA2110698A1 (en) |
DE (1) | DE69204457T2 (en) |
ES (1) | ES2079209T3 (en) |
FI (1) | FI935422A (en) |
NO (1) | NO302129B1 (en) |
NZ (1) | NZ242996A (en) |
WO (1) | WO1992021814A1 (en) |
YU (1) | YU48264B (en) |
ZA (1) | ZA924021B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1006881A3 (en) * | 1993-03-02 | 1995-01-17 | Solvay Interox | Method for delignification of chemical pulp. |
SE506480C2 (en) * | 1995-06-29 | 1997-12-22 | Sca Graphic Res Ab | Bleaching of lignocellulosic fibrous material with ozone and peracid in a combination step |
US5770011A (en) * | 1995-11-17 | 1998-06-23 | International Paper Company | Neutral monoperoxysulfate bleaching process |
FI964715A (en) * | 1996-11-26 | 1998-05-27 | Keskuslaboratorio | Method for bleaching cellulose pulp |
EP0931874A1 (en) * | 1998-01-22 | 1999-07-28 | Degussa-Hüls Aktiengesellschaft | Pulp bleaching process including final stage treatment step with salt of peroxymonosulfuric acid |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4372812A (en) * | 1978-04-07 | 1983-02-08 | International Paper Company | Chlorine free process for bleaching lignocellulosic pulp |
US5091054A (en) * | 1989-08-18 | 1992-02-25 | Degussa Corporation | Process for bleaching and delignification of lignocellulosic |
-
1991
- 1991-06-06 BE BE9100549A patent/BE1004974A3/en not_active IP Right Cessation
-
1992
- 1992-06-01 BR BR9206112A patent/BR9206112A/en not_active Application Discontinuation
- 1992-06-01 WO PCT/EP1992/001222 patent/WO1992021814A1/en active IP Right Grant
- 1992-06-01 ES ES92924472T patent/ES2079209T3/en not_active Expired - Fee Related
- 1992-06-01 CA CA002110698A patent/CA2110698A1/en not_active Abandoned
- 1992-06-01 DE DE69204457T patent/DE69204457T2/en not_active Expired - Fee Related
- 1992-06-01 AT AT92924472T patent/ATE127179T1/en not_active IP Right Cessation
- 1992-06-01 EP EP92924472A patent/EP0587822B1/en not_active Expired - Lifetime
- 1992-06-01 AU AU18775/92A patent/AU651462B2/en not_active Ceased
- 1992-06-01 JP JP4510141A patent/JPH06507683A/en active Pending
- 1992-06-02 ZA ZA924021A patent/ZA924021B/en unknown
- 1992-06-02 AR AR92322455A patent/AR247257A1/en active
- 1992-06-03 NZ NZ242996A patent/NZ242996A/en unknown
- 1992-06-05 YU YU58792A patent/YU48264B/en unknown
-
1993
- 1993-12-03 FI FI935422A patent/FI935422A/en unknown
- 1993-12-03 NO NO934406A patent/NO302129B1/en unknown
Also Published As
Publication number | Publication date |
---|---|
NZ242996A (en) | 1995-01-27 |
EP0587822A1 (en) | 1994-03-23 |
FI935422A (en) | 1994-01-11 |
FI935422A0 (en) | 1993-12-03 |
BE1004974A3 (en) | 1993-03-09 |
JPH06507683A (en) | 1994-09-01 |
YU48264B (en) | 1997-09-30 |
YU58792A (en) | 1994-09-09 |
NO302129B1 (en) | 1998-01-26 |
NO934406L (en) | 1994-01-26 |
ES2079209T3 (en) | 1996-01-01 |
DE69204457D1 (en) | 1995-10-05 |
DE69204457T2 (en) | 1996-04-18 |
ATE127179T1 (en) | 1995-09-15 |
BR9206112A (en) | 1995-10-10 |
EP0587822B1 (en) | 1995-08-30 |
ZA924021B (en) | 1993-02-24 |
WO1992021814A1 (en) | 1992-12-10 |
NO934406D0 (en) | 1993-12-03 |
AU651462B2 (en) | 1994-07-21 |
CA2110698A1 (en) | 1992-12-10 |
AU1877592A (en) | 1993-01-08 |
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