YU47388B - Postupak za beljenje celuloze za veštačka vlakna bez hlora - Google Patents
Postupak za beljenje celuloze za veštačka vlakna bez hloraInfo
- Publication number
- YU47388B YU47388B YU20691A YU20691A YU47388B YU 47388 B YU47388 B YU 47388B YU 20691 A YU20691 A YU 20691A YU 20691 A YU20691 A YU 20691A YU 47388 B YU47388 B YU 47388B
- Authority
- YU
- Yugoslavia
- Prior art keywords
- stage
- eop
- bleach
- chlorine
- free fiber
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Artificial Filaments (AREA)
- Detergent Compositions (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Processing Of Solid Wastes (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Jellies, Jams, And Syrups (AREA)
- General Preparation And Processing Of Foods (AREA)
Abstract
POSTUPAK ZA BELJENJE CELULOZE ZA VEŠTAČKA VLAKNA BEZ HLORA, naznačen time, što se celuloza za veštačka vlakna prvo beli sa kiseonikom pri 60 -100В°C, u datom primeru zajedno sa vodonik peroksidom, dok koncentracija NaOH u odnosu na celulozu iznosi 2,5-5 mas.%, beljeno apsolutno suvo i koncentracija kiseonika u smeši kiseonik-vodonik peroksid iznosi 0 - 50-mas.%, kod koga se zatim celuloza za veštačka vlakna beli pri 30 -70В°C sa ozonom i zatim konačno sa vodonik peroksidom, pri čemu se otpadni vazduh koji nastaje pri beljenju sa ozonom i koji sadrži kiseonik, koristi kod ograničenog beljenja sa kiseonikom i koji pri tome dovodi do potpune reakcije kiseonika i pri čemu se otpadna voda, koja nastaje pri beljenju sa ozonom i čija je pH-vrednost prvenstveno ispod 3, koristi za razredjenje celuloze tokom beljenja sa kiseonikom i tokom beljenja sa ozonom i/ili za odstranjivanje pepela iz celuloze posle beljenja. Prijava sadrži još 3 zavisna zahteva.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI9110206A SI9110206B (sl) | 1990-02-07 | 1991-02-06 | Postopek za beljenje celuloze za umetna vlakna brez klora |
HR930456A HRP930456A2 (en) | 1990-02-07 | 1993-03-23 | Process for the chlorine-free bleaching of fibre dissolving pulp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0026190A AT395028B (de) | 1990-02-07 | 1990-02-07 | Verfahren zum chlorfreien bleichen von kunstfaserzellstoff |
Publications (2)
Publication Number | Publication Date |
---|---|
YU20691A YU20691A (sh) | 1994-05-10 |
YU47388B true YU47388B (sh) | 1995-01-31 |
Family
ID=3485841
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
YU20691A YU47388B (sh) | 1990-02-07 | 1991-02-06 | Postupak za beljenje celuloze za veštačka vlakna bez hlora |
Country Status (22)
Country | Link |
---|---|
US (1) | US5145557A (sh) |
EP (1) | EP0441113B1 (sh) |
JP (1) | JPH04300380A (sh) |
AT (2) | AT395028B (sh) |
BR (1) | BR9100516A (sh) |
CA (1) | CA2035698C (sh) |
CZ (1) | CZ280077B6 (sh) |
DE (1) | DE59007341D1 (sh) |
DK (1) | DK0441113T3 (sh) |
ES (1) | ES2061008T3 (sh) |
FI (1) | FI98077C (sh) |
HR (1) | HRP930456A2 (sh) |
IN (1) | IN174833B (sh) |
LT (1) | LT3392B (sh) |
LV (1) | LV10514B (sh) |
NO (1) | NO178079C (sh) |
PL (1) | PL169421B1 (sh) |
RU (1) | RU2040616C1 (sh) |
SI (1) | SI9110206B (sh) |
SK (1) | SK278326B6 (sh) |
YU (1) | YU47388B (sh) |
ZA (1) | ZA91840B (sh) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2053035C (en) * | 1990-10-12 | 1997-09-30 | Repap Enterprises Inc. | Chlorine-free wood pulps and process of making |
US5211809A (en) * | 1991-05-21 | 1993-05-18 | Air Products And Chemicals, Inc,. | Dye removal in oxygen color stripping of secondary fibers |
BE1006056A3 (fr) * | 1992-07-06 | 1994-05-03 | Solvay Interox | Procede pour le blanchiment d'une pate a papier chimique. |
SE500113C2 (sv) * | 1992-07-09 | 1994-04-18 | Kamyr Ab | Sätt vid blekning av massa för omhändertagande av utlösta metaller |
US5374333A (en) * | 1992-07-30 | 1994-12-20 | Kamyr, Inc. | Method for minimizing pulp mill effluents |
FR2695947B1 (fr) * | 1992-09-18 | 1994-10-21 | Saint Gobain Papier Bois Gie C | Procédé de blanchiment de pâtes cellulosiques chimiques. |
DE69316988T2 (de) * | 1992-10-23 | 1998-07-30 | Mac Millan Bloedel Ltd | Verbessertes ozonbleichen |
SE500335C2 (sv) * | 1992-10-26 | 1994-06-06 | Sca Wifsta Oestrand Ab | Blekning av sulfatmassa med peroxid-ozon-peroxid |
US6210527B1 (en) | 1994-03-14 | 2001-04-03 | The Boc Group, Inc. | Pulp bleaching method wherein an ozone bleaching waste stream is scrubbed to form an oxygen containing stream |
SE504424C2 (sv) * | 1994-11-04 | 1997-02-10 | Kvaerner Pulping Tech | Sätt att fälla ut övergångsmetaller och alkaliska jordartsmetaller ur blekeriavlutar genom att tillsätta alkalisk vätska |
SE516030C2 (sv) * | 1994-11-14 | 2001-11-12 | Aga Ab | Regenerering av en gasblandning från ett ozonbleksteg |
US5656130A (en) * | 1995-04-28 | 1997-08-12 | Union Camp Holding, Inc. | Ambient temperature pulp bleaching with peroxyacid salts |
CA2239855C (en) * | 1995-12-07 | 2002-07-02 | Beloit Technologies, Inc. | Oxygen delignification of medium consistency pulp slurry |
AT402827B (de) * | 1995-12-22 | 1997-09-25 | Chemiefaser Lenzing Ag | Celluloseformkörper und verfahren zu seiner herstellung |
EP1728918A3 (de) * | 2005-05-12 | 2006-12-13 | Voith Patent GmbH | Verfahren zur Entfernung von Störstoffen aus einer wässrigen Papierfasersuspension |
US9339058B2 (en) | 2012-04-19 | 2016-05-17 | R. J. Reynolds Tobacco Company | Method for producing microcrystalline cellulose from tobacco and related tobacco product |
SE538064C2 (sv) * | 2014-06-17 | 2016-02-23 | Valmet Oy | Metod för att producera dissolving massa från lignocellulosahaltiga material |
FI127444B (en) | 2015-05-27 | 2018-06-15 | Kemira Oyj | A method for reducing the viscosity of a pulp in the manufacture of soluble cellulose |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4196043A (en) * | 1970-12-21 | 1980-04-01 | Scott Paper Company | Kraft pulp bleaching and recovery process |
CA966604A (en) * | 1970-12-21 | 1975-04-29 | Scott Paper Company | Kraft pulp bleaching and recovery process |
JPS5430902A (en) | 1977-06-27 | 1979-03-07 | Seisan Kaihatsu Kagaku Kenkyus | Industrial multistage pulp bleaching method |
US4216054A (en) * | 1977-09-26 | 1980-08-05 | Weyerhaeuser Company | Low-consistency ozone delignification |
US4372812A (en) * | 1978-04-07 | 1983-02-08 | International Paper Company | Chlorine free process for bleaching lignocellulosic pulp |
US4283251A (en) * | 1980-01-24 | 1981-08-11 | Scott Paper Company | Ozone effluent bleaching |
US4619733A (en) * | 1983-11-30 | 1986-10-28 | Kooi Boon Lam | Pollution free pulping process using recycled wash effluent from multiple bleach stages to remove black liquor and recovering sodium hydroxide from the black liquor |
AT384837B (de) * | 1985-06-27 | 1988-01-11 | Steyrermuehl Papier | Verfahren und anordnung zur delignifizierung von zellstoff mit sauerstoff |
-
1990
- 1990-02-07 AT AT0026190A patent/AT395028B/de not_active IP Right Cessation
- 1990-12-20 DK DK90890348.7T patent/DK0441113T3/da not_active Application Discontinuation
- 1990-12-20 AT AT90890348T patent/ATE112338T1/de not_active IP Right Cessation
- 1990-12-20 DE DE59007341T patent/DE59007341D1/de not_active Expired - Fee Related
- 1990-12-20 EP EP90890348A patent/EP0441113B1/de not_active Expired - Lifetime
- 1990-12-20 ES ES90890348T patent/ES2061008T3/es not_active Expired - Lifetime
-
1991
- 1991-01-28 IN IN85CA1991D patent/IN174833B/en unknown
- 1991-02-05 CA CA002035698A patent/CA2035698C/en not_active Expired - Fee Related
- 1991-02-05 ZA ZA91840A patent/ZA91840B/xx unknown
- 1991-02-06 CZ CS91280A patent/CZ280077B6/cs unknown
- 1991-02-06 RU SU914894510A patent/RU2040616C1/ru active
- 1991-02-06 PL PL91288978A patent/PL169421B1/pl unknown
- 1991-02-06 SK SK280-91A patent/SK278326B6/sk unknown
- 1991-02-06 SI SI9110206A patent/SI9110206B/sl unknown
- 1991-02-06 NO NO910455A patent/NO178079C/no unknown
- 1991-02-06 YU YU20691A patent/YU47388B/sh unknown
- 1991-02-07 BR BR919100516A patent/BR9100516A/pt not_active Application Discontinuation
- 1991-02-07 US US07/652,027 patent/US5145557A/en not_active Expired - Lifetime
- 1991-02-07 JP JP3016575A patent/JPH04300380A/ja active Pending
- 1991-02-07 FI FI910601A patent/FI98077C/fi active IP Right Grant
-
1993
- 1993-01-12 LV LVP-93-21A patent/LV10514B/lv unknown
- 1993-03-23 HR HR930456A patent/HRP930456A2/hr not_active Application Discontinuation
- 1993-07-02 LT LTIP753A patent/LT3392B/lt unknown
Also Published As
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