PT97455A - Processo de branqueamento de material contendo lenhocelulose - Google Patents
Processo de branqueamento de material contendo lenhoceluloseInfo
- Publication number
- PT97455A PT97455A PT97455A PT9745591A PT97455A PT 97455 A PT97455 A PT 97455A PT 97455 A PT97455 A PT 97455A PT 9745591 A PT9745591 A PT 9745591A PT 97455 A PT97455 A PT 97455A
- Authority
- PT
- Portugal
- Prior art keywords
- halogen
- bleaching
- lenhocellulose
- prebleaching
- containing material
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- 230000002087 whitening effect Effects 0.000 title 1
- 238000004061 bleaching Methods 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 2
- 229910052736 halogen Inorganic materials 0.000 abstract 2
- 150000002367 halogens Chemical class 0.000 abstract 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000007844 bleaching agent Substances 0.000 abstract 1
- 239000008139 complexing agent Substances 0.000 abstract 1
- 150000002896 organic halogen compounds Chemical class 0.000 abstract 1
- 150000002978 peroxides Chemical class 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
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
-
- 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
- D21C9/1057—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)
- Compositions Of Macromolecular Compounds (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Compounds Of Unknown Constitution (AREA)
- Seasonings (AREA)
- General Preparation And Processing Of Foods (AREA)
- Jellies, Jams, And Syrups (AREA)
- Detergent Compositions (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9001449A SE466061B (sv) | 1990-04-23 | 1990-04-23 | Blekning av kemisk massa genom behandling med foerst ett komplexbildande aemne och sedan ett peroxidinnehaallande aemne |
Publications (2)
Publication Number | Publication Date |
---|---|
PT97455A true PT97455A (pt) | 1992-01-31 |
PT97455B PT97455B (pt) | 1998-08-31 |
Family
ID=20379258
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PT97455A PT97455B (pt) | 1990-04-23 | 1991-04-23 | Processo de branqueamento de material contendo lenhocelulose |
Country Status (17)
Country | Link |
---|---|
US (1) | US5143580A (pt) |
EP (1) | EP0456626B1 (pt) |
JP (1) | JPH0660475B2 (pt) |
AT (1) | ATE87987T1 (pt) |
AU (1) | AU641751B2 (pt) |
BR (1) | BR9101586A (pt) |
CA (1) | CA2040871C (pt) |
DE (1) | DE69100060T2 (pt) |
ES (1) | ES2040151T3 (pt) |
FI (1) | FI96974C (pt) |
LT (1) | LT3210B (pt) |
LV (1) | LV10516B (pt) |
NO (1) | NO176059C (pt) |
NZ (1) | NZ237866A (pt) |
PT (1) | PT97455B (pt) |
RU (1) | RU2044808C1 (pt) |
SE (1) | SE466061B (pt) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI89516B (fi) | 1989-05-10 | 1993-06-30 | Ahlstroem Oy | Foerfarande foer blekning av cellulosamassa med otson |
US5322598A (en) * | 1990-02-06 | 1994-06-21 | Olin Corporation | Chlorine dioxide generation using inert load of sodium perchlorate |
SE468355B (sv) * | 1991-04-30 | 1992-12-21 | Eka Nobel Ab | Blekning av kemisk massa genom behandling med komplexbildare och ozon |
FR2692499B1 (fr) * | 1992-06-22 | 1994-08-26 | Atochem Elf Sa | Procédé de délignification et de blanchiment d'une matière lignocellulosique. |
SE500113C2 (sv) * | 1992-07-09 | 1994-04-18 | Kamyr Ab | Sätt vid blekning av massa för omhändertagande av utlösta metaller |
SE9301160L (sv) * | 1992-08-28 | 1994-03-01 | Sunds Defibrator Ind Ab | Förfarande för behandling av processvatten |
JPH06116889A (ja) * | 1992-09-30 | 1994-04-26 | New Oji Paper Co Ltd | 木材化学パルプの漂白法 |
US5401362A (en) * | 1993-03-24 | 1995-03-28 | Kamyr, Inc. | Control of metals and dissolved organics in the bleach plant |
SE500616C2 (sv) * | 1993-06-08 | 1994-07-25 | Kvaerner Pulping Tech | Blekning av kemisk massa med peroxid vid övertryck |
SE502172C2 (sv) * | 1993-12-15 | 1995-09-04 | Mo Och Domsjoe Ab | Förfarande för framställning av blekt cellulosamassa med en klorfri bleksekvens i närvaro av karbonat |
SE502706E (sv) * | 1994-04-05 | 1999-09-27 | Mo Och Domsjoe Ab | Framställnng av blekt cellulosamassa genom blekning med klordioxid och behandling av komplexbildare i samma steg |
US6776876B1 (en) | 1994-10-13 | 2004-08-17 | Andritz Oy | Method of treating cellulosic pulp to remove hexenuronic acid |
FI102301B (fi) * | 1994-10-13 | 1998-11-13 | Andritz Oy | Menetelmä selluloosamassojen käsittelemiseksi |
US6706143B1 (en) * | 1996-03-19 | 2004-03-16 | International Paper Company | Minimizing chlorinated organics in pulp bleaching processes |
FR2747407B1 (fr) * | 1996-04-12 | 1998-05-07 | Atochem Elf Sa | Procede de delignification et de blanchiment de pates a papier chimiques |
US6375797B1 (en) * | 1996-06-20 | 2002-04-23 | Andritz-Ahlstrom Oy | Bleaching chemical pulp in a PkDQ-Po Sequence |
US6322768B1 (en) | 1998-09-29 | 2001-11-27 | International Paper Company | Recovery of chlorine dioxide from gas streams |
JP4513959B2 (ja) * | 2004-09-17 | 2010-07-28 | 三菱瓦斯化学株式会社 | 製紙用化学パルプの半晒漂白方法 |
US20080110584A1 (en) * | 2006-11-15 | 2008-05-15 | Caifang Yin | Bleaching process with at least one extraction stage |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA575636A (en) * | 1959-05-12 | E. Smedberg George | Bleaching of wood pulps | |
US3251731A (en) * | 1963-02-11 | 1966-05-17 | Andrew J Gard | Bleaching of wood pulp with a sequestering agent and hydrogen peroxide |
FI45574C (fi) * | 1970-05-11 | 1972-07-10 | Kymin Oy Kymmene Ab | Menetelmä selluloosapitoisten aineiden valkaisemiseksi. |
DE2219504C2 (de) * | 1972-04-21 | 1974-10-03 | Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt | Mehrstufenbleiche von Zellstoffen mit erheblich reduziertem Chloreinsatz |
DE2538673C2 (de) * | 1975-08-30 | 1986-01-16 | Degussa Ag, 6000 Frankfurt | Bleichaufschluß von Zellstoff mit erheblich reduziertem Chloreinsatz |
SE420430B (sv) * | 1978-02-17 | 1981-10-05 | Mo Och Domsjoe Ab | Forfarande for blekning och extraktion av lignocellulosahaltig material med peroxidhaltiga blekmedel |
FR2457339A1 (fr) * | 1979-05-25 | 1980-12-19 | Interox | Procede pour la delignification et le blanchiment de pates cellulosiques chimiques et semi-chimiques |
SU903429A1 (ru) * | 1980-06-05 | 1982-02-07 | Центральный научно-исследовательский институт бумаги | Способ отбелки древесной массы |
FR2520397A1 (fr) * | 1982-01-28 | 1983-07-29 | Centre Tech Ind Papier | Procede pour le traitement de pates papetieres chimiques |
US4826568A (en) * | 1985-08-05 | 1989-05-02 | Interox (Societe Anonyme) | Process for delignification of cellulosic substances by pretreating with a complexing agent followed by peroxide prior to kraft digestion |
DE3620980A1 (de) * | 1986-06-23 | 1988-01-14 | Schott Glaswerke | Kontinuierliches mehrstufen-verfahren zur aufbereitung der bleicherei-abwaesser aus der zellstoffproduktion |
US4732650A (en) * | 1986-09-15 | 1988-03-22 | The Dow Chemical Company | Bleaching of cellulosic pulps using hydrogen peroxide |
FR2613388B1 (fr) * | 1987-04-02 | 1990-05-04 | Atochem | Procede de blanchiment de pates |
US4946556A (en) * | 1989-04-25 | 1990-08-07 | Kamyr, Inc. | Method of oxygen delignifying wood pulp with between stage washing |
-
1990
- 1990-04-23 SE SE9001449A patent/SE466061B/sv not_active Application Discontinuation
-
1991
- 1991-04-08 AT AT91850091T patent/ATE87987T1/de active
- 1991-04-08 DE DE9191850091T patent/DE69100060T2/de not_active Expired - Fee Related
- 1991-04-08 EP EP91850091A patent/EP0456626B1/en not_active Expired - Lifetime
- 1991-04-08 ES ES199191850091T patent/ES2040151T3/es not_active Expired - Lifetime
- 1991-04-18 NZ NZ237866A patent/NZ237866A/xx unknown
- 1991-04-19 NO NO911569A patent/NO176059C/no unknown
- 1991-04-19 CA CA002040871A patent/CA2040871C/en not_active Expired - Fee Related
- 1991-04-19 BR BR919101586A patent/BR9101586A/pt not_active IP Right Cessation
- 1991-04-19 FI FI911908A patent/FI96974C/fi active
- 1991-04-22 AU AU75217/91A patent/AU641751B2/en not_active Ceased
- 1991-04-22 JP JP3116634A patent/JPH0660475B2/ja not_active Expired - Lifetime
- 1991-04-23 PT PT97455A patent/PT97455B/pt not_active IP Right Cessation
- 1991-04-23 RU SU914895240A patent/RU2044808C1/ru active
- 1991-04-23 US US07/689,502 patent/US5143580A/en not_active Expired - Fee Related
-
1992
- 1992-12-30 LV LVP-92-608A patent/LV10516B/xx unknown
-
1993
- 1993-03-19 LT LTIP443A patent/LT3210B/lt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
PT97455B (pt) | 1998-08-31 |
JPH04228690A (ja) | 1992-08-18 |
LT3210B (en) | 1995-03-27 |
US5143580A (en) | 1992-09-01 |
LTIP443A (en) | 1994-10-25 |
NO176059B (no) | 1994-10-17 |
AU7521791A (en) | 1991-10-24 |
EP0456626B1 (en) | 1993-04-07 |
NZ237866A (en) | 1992-11-25 |
DE69100060D1 (de) | 1993-05-13 |
JPH0660475B2 (ja) | 1994-08-10 |
RU2044808C1 (ru) | 1995-09-27 |
SE466061B (sv) | 1991-12-09 |
NO176059C (no) | 1995-01-25 |
ES2040151T3 (es) | 1993-10-01 |
AU641751B2 (en) | 1993-09-30 |
LV10516A (lv) | 1995-02-20 |
SE9001449L (sv) | 1991-10-24 |
CA2040871C (en) | 1997-05-20 |
FI911908A0 (fi) | 1991-04-19 |
NO911569D0 (no) | 1991-04-19 |
LV10516B (en) | 1995-04-20 |
FI96974B (fi) | 1996-06-14 |
CA2040871A1 (en) | 1991-10-24 |
FI96974C (fi) | 1996-09-25 |
BR9101586A (pt) | 1991-12-10 |
ATE87987T1 (de) | 1993-04-15 |
FI911908A (fi) | 1991-10-24 |
DE69100060T2 (de) | 1993-09-16 |
EP0456626A1 (en) | 1991-11-13 |
NO911569L (no) | 1991-10-24 |
SE9001449D0 (sv) | 1990-04-23 |
Similar Documents
Publication | Publication Date | Title |
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PT97455A (pt) | Processo de branqueamento de material contendo lenhocelulose | |
EP0512590B1 (en) | Process for bleaching of lignocellulose-containing material | |
NO921671D0 (no) | Fremgangsmaate ved bleking av lignocelluloseholdig materiale | |
NO177607C (no) | Fremgangsmåte for å nedsette mengden av organiske halogenforbindelser i bakvann | |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BB1A | Laying open of patent application |
Effective date: 19910913 |
|
FG3A | Patent granted, date of granting |
Effective date: 19980513 |
|
MM3A | Annulment or lapse |
Free format text: LAPSE DUE TO NON-PAYMENT OF FEES Effective date: 20001130 |