FI906400A - Pulp bleaching method - Google Patents
Pulp bleaching method Download PDFInfo
- Publication number
- FI906400A FI906400A FI906400A FI906400A FI906400A FI 906400 A FI906400 A FI 906400A FI 906400 A FI906400 A FI 906400A FI 906400 A FI906400 A FI 906400A FI 906400 A FI906400 A FI 906400A
- Authority
- FI
- Finland
- Prior art keywords
- pulp bleaching
- bleaching method
- pulp
- bleaching
- 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
- 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
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
- D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8904403 | 1989-12-29 | ||
SE8904403A SE467260B (en) | 1989-12-29 | 1989-12-29 | WHITING CELLULOSAMASSA WITH CHLORIDE Dioxide AND OZONE IN ONE AND SAME STEP |
Publications (4)
Publication Number | Publication Date |
---|---|
FI906400A0 FI906400A0 (en) | 1990-12-27 |
FI906400A true FI906400A (en) | 1991-06-30 |
FI95291B FI95291B (en) | 1995-09-29 |
FI95291C FI95291C (en) | 1996-01-10 |
Family
ID=20377904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI906400A FI95291C (en) | 1989-12-29 | 1990-12-27 | Ways to bleach pulp |
Country Status (9)
Country | Link |
---|---|
JP (1) | JPH04289288A (en) |
AT (1) | AT396129B (en) |
BR (1) | BR9006578A (en) |
CA (1) | CA2031848C (en) |
DE (1) | DE4039099C2 (en) |
FI (1) | FI95291C (en) |
FR (1) | FR2656634B1 (en) |
NO (1) | NO176061C (en) |
SE (1) | SE467260B (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5322598A (en) * | 1990-02-06 | 1994-06-21 | Olin Corporation | Chlorine dioxide generation using inert load of sodium perchlorate |
FI925558A (en) * | 1992-04-22 | 1993-10-23 | Ahlstroem Oy | FOERFARANDE OCH ANORDNING FOER BLEKNING AV MASSA |
US5387317A (en) * | 1993-01-28 | 1995-02-07 | The Mead Corporation | Oxygen/ozone/peracetic aicd delignification and bleaching of cellulosic pulps |
US6248209B1 (en) | 1995-08-10 | 2001-06-19 | Sanyo Chemical Industries, Ltd. | Process for bleaching cellulose pulp with a bleaching assistant having the formula R1-O-{[(C2H4O)m/(AO)n}]-H |
FR2743094B1 (en) * | 1995-12-27 | 1998-02-13 | Centre Tech Ind Papier | PROCESS FOR BLEACHING CHEMICAL PULP |
ID23571A (en) * | 1997-08-25 | 2000-05-04 | Praxair Technology Inc | METHOD OF OZONE APPLICATION IN ECF BLEACHING |
US6174409B1 (en) | 1997-09-19 | 2001-01-16 | American Air Liquide Inc. | Method to improve final bleached pulp strength properties by adjusting the CI02:03 ration within a single (D/Z) stage of the bleaching process |
AU8642698A (en) * | 1998-07-31 | 2000-02-28 | Asia Pulp & Paper Co Ltd | An improved method for bleaching pulp |
JP2002069879A (en) * | 2000-09-04 | 2002-03-08 | Nippon Paper Industries Co Ltd | Method for bleaching pulp of cellulosic fiber material |
SE532470C2 (en) * | 2008-05-13 | 2010-02-02 | Metso Paper Inc | Final bleaching of oxygen delignified pulp with ozone, chlorine dioxide and peroxide |
JP5987223B2 (en) * | 2012-03-06 | 2016-09-07 | 愛媛県 | Method for producing cellulose solution, method for producing cellulose, method for saccharification of cellulose |
CN111979818A (en) * | 2020-08-07 | 2020-11-24 | 齐鲁工业大学 | Sulfate wood pulp short-procedure ECF bleaching process X/Z/D-EOP-D or X/D/Z-EOP-D |
CN111979823A (en) * | 2020-08-07 | 2020-11-24 | 齐鲁工业大学 | Sulfate wood pulp short-process ECF bleaching process X/D-Z-P (X/Z-D-P) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1298875B (en) * | 1965-01-09 | 1969-07-03 | Gunnar Alexander Dipl Ing | Process for bleaching cellulose in a chlorine bleach bath and with ozone |
US4080249A (en) * | 1976-06-02 | 1978-03-21 | International Paper Company | Delignification and bleaching of a lignocellulosic pulp slurry with ozone |
US4902381A (en) * | 1988-12-09 | 1990-02-20 | Kamyr, Inc. | Method of bleaching pulp with ozone-chlorine mixtures |
US4959124A (en) * | 1989-05-05 | 1990-09-25 | International Paper Company | Method of bleaching kraft pulp in a DZED sequence |
FI89516B (en) * | 1989-05-10 | 1993-06-30 | Ahlstroem Oy | Foerfarande Foer blekning av cellulosamassa med Otson |
-
1989
- 1989-12-29 SE SE8904403A patent/SE467260B/en unknown
-
1990
- 1990-12-07 DE DE4039099A patent/DE4039099C2/en not_active Expired - Fee Related
- 1990-12-10 CA CA002031848A patent/CA2031848C/en not_active Expired - Lifetime
- 1990-12-12 AT AT0251990A patent/AT396129B/en not_active IP Right Cessation
- 1990-12-26 BR BR909006578A patent/BR9006578A/en not_active IP Right Cessation
- 1990-12-27 NO NO905599A patent/NO176061C/en not_active IP Right Cessation
- 1990-12-27 FI FI906400A patent/FI95291C/en active IP Right Grant
- 1990-12-28 FR FR9016500A patent/FR2656634B1/en not_active Expired - Fee Related
- 1990-12-28 JP JP2415577A patent/JPH04289288A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
FI906400A0 (en) | 1990-12-27 |
FI95291B (en) | 1995-09-29 |
FR2656634A1 (en) | 1991-07-05 |
CA2031848A1 (en) | 1991-06-30 |
NO905599D0 (en) | 1990-12-27 |
SE8904403D0 (en) | 1989-12-29 |
FR2656634B1 (en) | 1996-07-26 |
AT396129B (en) | 1993-06-25 |
DE4039099A1 (en) | 1991-07-04 |
ATA251990A (en) | 1992-10-15 |
DE4039099C2 (en) | 1994-01-27 |
CA2031848C (en) | 1995-11-21 |
BR9006578A (en) | 1991-10-01 |
NO176061C (en) | 1995-01-25 |
SE467260B (en) | 1992-06-22 |
FI95291C (en) | 1996-01-10 |
NO905599L (en) | 1991-07-01 |
NO176061B (en) | 1994-10-17 |
SE8904403L (en) | 1991-06-30 |
JPH04289288A (en) | 1992-10-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
HC | Name/ company changed in application |
Owner name: KVAERNER PULPING TECHNOLOGIES AKTIEBOLAG |
|
BB | Publication of examined application | ||
FG | Patent granted |
Owner name: KVAERNER PULPING AB |
|
PC | Transfer of assignment of patent |
Owner name: METSO FIBER KARLSTAD AB Free format text: METSO FIBER KARLSTAD AB |