DE69839097D1 - BLEACHING PULP BY PERSONAL - Google Patents
BLEACHING PULP BY PERSONALInfo
- Publication number
- DE69839097D1 DE69839097D1 DE69839097T DE69839097T DE69839097D1 DE 69839097 D1 DE69839097 D1 DE 69839097D1 DE 69839097 T DE69839097 T DE 69839097T DE 69839097 T DE69839097 T DE 69839097T DE 69839097 D1 DE69839097 D1 DE 69839097D1
- Authority
- DE
- Germany
- Prior art keywords
- bleaching
- pulp
- peracid
- post
- earth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/32—Bleaching 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
- D21C9/16—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)
- Detergent Compositions (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Cosmetics (AREA)
Abstract
The invention relates to a process for the bleaching of chemical pulp and the use of a bleaching solution. According to the invention the pulp is treated in a plurality of different steps by using at least in one step a bleaching solution which contains a peracid, and the essential idea of the invention is that the peracid is used in a post-bleaching which is the last step of the bleaching process, the post-bleaching being carried out in the presence of one or more earth-alkali metal compounds. By using a peracid the pulp is brought to its final brightness, and the purpose of the earth-alkali metal added is to combat the lowering of the viscosity of the pulp. According to the invention the post-bleaching can be carried out after the bleach plant steps in a pulp flow pipe, a storage tower or in the paper machine at a paper mill.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI974575 | 1997-12-19 | ||
FI974575A FI112958B (en) | 1997-12-19 | 1997-12-19 | Method for bleaching chemical pulp and use of bleaching solution |
PCT/FI1998/000993 WO1999032710A1 (en) | 1997-12-19 | 1998-12-18 | Bleaching of chemical pulp with peracid |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69839097D1 true DE69839097D1 (en) | 2008-03-20 |
DE69839097T2 DE69839097T2 (en) | 2009-01-29 |
Family
ID=8550176
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69839097T Expired - Lifetime DE69839097T2 (en) | 1997-12-19 | 1998-12-18 | BLEACHING PULP BY PERSONAL |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP1040222B1 (en) |
JP (1) | JP4499280B2 (en) |
AT (1) | ATE385526T1 (en) |
AU (1) | AU1674399A (en) |
BR (1) | BR9813747B1 (en) |
CA (1) | CA2315063C (en) |
DE (1) | DE69839097T2 (en) |
ES (1) | ES2302362T3 (en) |
FI (1) | FI112958B (en) |
PT (1) | PT1040222E (en) |
WO (1) | WO1999032710A1 (en) |
Families Citing this family (60)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI117392B (en) * | 1999-03-02 | 2006-09-29 | Kemira Oyj | Multi-step bleaching process for bleaching chemical pulp |
JP3794254B2 (en) * | 2000-02-28 | 2006-07-05 | 王子製紙株式会社 | Neutral paper |
FI111459B (en) | 2001-04-04 | 2003-07-31 | Kemira Chemicals Oy | Process for the preparation of stable peracetic acid product |
FI111745B (en) | 2001-12-19 | 2003-09-15 | Kemira Chemicals Oy | Improved board manufacturing process |
DE10211292A1 (en) | 2002-03-14 | 2003-09-25 | Basf Ag | Process for the preparation of precipitated calcium carbonate with a high degree of whiteness |
GB2391011A (en) * | 2002-07-19 | 2004-01-28 | Crosmill Ltd | Bleaching cellulose suspensions |
AU2006213983B2 (en) * | 2005-02-19 | 2009-11-19 | International Paper Company | Pulp and paper having increased brightness |
US7638016B2 (en) | 2005-02-19 | 2009-12-29 | International Paper Company | Method for treating kraft pulp with optical brighteners after chlorine bleaching to increase brightness |
US7914646B2 (en) | 2006-07-21 | 2011-03-29 | Nalco Company | Compositions and processes for paper production |
JP4956991B2 (en) * | 2005-12-22 | 2012-06-20 | 三菱瓦斯化学株式会社 | Method for producing chemical pulp |
JP4967451B2 (en) | 2006-05-17 | 2012-07-04 | 三菱瓦斯化学株式会社 | Method for producing bleached pulp |
US8900408B2 (en) | 2007-12-20 | 2014-12-02 | Mitsubishi Gas Chemical Company, Inc. | Process for production of bleached pulp |
US7910347B1 (en) | 2009-12-07 | 2011-03-22 | E. I. Du Pont De Nemours And Company | Perhydrolase providing improved peracid stability |
US7923233B1 (en) | 2009-12-07 | 2011-04-12 | E. I. Du Pont De Nemours And Company | Perhydrolase providing improved peracid stability |
US7927854B1 (en) | 2009-12-07 | 2011-04-19 | E. I. Du Pont De Nemours And Company | Perhydrolase providing improved peracid stability |
US7932072B1 (en) | 2009-12-07 | 2011-04-26 | E. I. Du Pont De Nemours And Company | Perhydrolase providing improved peracid stability |
US7960528B1 (en) | 2009-12-07 | 2011-06-14 | E. I. Du Pont De Nemours And Company | Perhydrolase providing improved peracid stability |
US8586339B2 (en) | 2010-03-26 | 2013-11-19 | E. I. Du Pont De Nemours And Company | Facilitated process for purification of proteins |
US8450091B2 (en) | 2010-03-26 | 2013-05-28 | E. I. Du Pont De Nemours And Company | Perhydrolase providing improved specific activity |
CN102822281A (en) | 2010-03-26 | 2012-12-12 | 纳幕尔杜邦公司 | Polyarylene sulfide-containing polymer melt |
US8389255B2 (en) | 2010-03-26 | 2013-03-05 | E.I. De Pont De Nemours And Company | Perhydrolase providing improved specific activity |
US8389254B2 (en) | 2010-03-26 | 2013-03-05 | E.I. Du Pont De Nemours And Company | Perhydrolase providing improved specific activity |
US8445242B2 (en) | 2010-03-26 | 2013-05-21 | E. I. Du Pont De Nemours And Company | Perhydrolase providing improved specific activity |
AU2011349447A1 (en) | 2010-12-20 | 2013-05-30 | E. I. Du Pont De Nemours And Company | Targeted perhydrolases |
WO2012087789A1 (en) | 2010-12-21 | 2012-06-28 | E.I. Dupont De Nemours And Company | Perhydrolase variant providing improved specific activity |
WO2012087792A1 (en) | 2010-12-21 | 2012-06-28 | E.I. Dupont De Nemours And Company | Perhydrolase variant providing improved specific activity |
WO2012087788A1 (en) | 2010-12-21 | 2012-06-28 | E.I. Dupont De Nemours And Company | Perhydrolase variant providing improved specific activity |
US8394617B2 (en) | 2010-12-21 | 2013-03-12 | E.I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
US8389259B2 (en) | 2010-12-21 | 2013-03-05 | E.I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
WO2012087793A1 (en) | 2010-12-21 | 2012-06-28 | E.I. Dupont De Nemours And Company | Perhydrolase variant providing improved specific activity |
WO2012087790A1 (en) | 2010-12-21 | 2012-06-28 | E.I. Dupont De Nemours And Company | Perhydrolase variant providing improved specific activity |
US8389260B2 (en) | 2010-12-21 | 2013-03-05 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
WO2012166997A2 (en) | 2011-05-31 | 2012-12-06 | Clean Chemistry, Llc | Electrochemical reactor and process |
US8557556B2 (en) | 2011-10-25 | 2013-10-15 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
US8546120B2 (en) | 2011-10-25 | 2013-10-01 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
US8962294B2 (en) | 2011-10-25 | 2015-02-24 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
US8735125B2 (en) | 2011-10-25 | 2014-05-27 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
US8486679B2 (en) | 2011-10-25 | 2013-07-16 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
US8809030B2 (en) | 2011-10-25 | 2014-08-19 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
US8501447B2 (en) | 2011-10-25 | 2013-08-06 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
WO2013062885A1 (en) | 2011-10-25 | 2013-05-02 | E.I. Dupont De Nemours And Company | Perhydrolase variant providing improved specific activity |
US8956843B2 (en) | 2011-10-25 | 2015-02-17 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
WO2013096045A1 (en) | 2011-12-19 | 2013-06-27 | E. I. Du Pont De Nemours And Company | Perhydrolase variants providing improved specific activity in the presence of surfactant |
US8865435B2 (en) | 2012-03-30 | 2014-10-21 | E. I. Du Pont De Nemours And Company | Enzymes useful for peracid production |
BR112014024424B1 (en) | 2012-03-30 | 2022-04-05 | E.I. Du Pont De Nemours And Company | Process for the production of a peroxycarboxylic acid, composition, system for generating and supplying peracid and isolated polypeptide |
EP2831252B1 (en) | 2012-03-30 | 2021-11-24 | DuPont US Holding, LLC | Enzymes useful for peracid production |
MX2014011651A (en) | 2012-03-30 | 2015-02-13 | Du Pont | Enzymes useful for peracid production. |
JP6574376B2 (en) | 2012-03-30 | 2019-09-11 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニーE.I.Du Pont De Nemours And Company | Enzymes useful for peracid production |
EP2892854A4 (en) | 2012-09-07 | 2016-11-02 | Clean Chemistry Llc | Systems and methods for generation of reactive oxygen species and applications thereof |
FR2997069B1 (en) * | 2012-10-18 | 2014-12-26 | Nicolas Saverino | METHOD FOR MANUFACTURING A COLORED TRAY |
CA2960104C (en) | 2014-09-04 | 2023-05-02 | Clean Chemistry, Inc. | Method of water treatment utilizing a peracetate oxidant solution |
WO2016154531A1 (en) | 2015-03-26 | 2016-09-29 | Clean Chemistry, Inc. | Systems and methods of reducing a bacteria population in high hydrogen sulfide water |
FI127444B (en) * | 2015-05-27 | 2018-06-15 | Kemira Oyj | Method for reducing pulp viscosity in production of dissolving pulp |
WO2017055504A1 (en) * | 2015-09-30 | 2017-04-06 | Imerys Minerals Limited | Methods for bleaching aqueous pulps and compositions for use in these methods |
US10611656B2 (en) | 2015-12-07 | 2020-04-07 | Clean Chemistry, Inc. | Methods of microbial control |
US10883224B2 (en) | 2015-12-07 | 2021-01-05 | Clean Chemistry, Inc. | Methods of pulp fiber treatment |
FI127996B (en) * | 2016-07-01 | 2019-07-15 | Kemira Oyj | A process for treating pulp |
US11136714B2 (en) | 2016-07-25 | 2021-10-05 | Clean Chemistry, Inc. | Methods of optical brightening agent removal |
US11311012B1 (en) | 2017-09-07 | 2022-04-26 | Clean Chemistry, Inc. | Bacterial control in fermentation systems |
US11001864B1 (en) | 2017-09-07 | 2021-05-11 | Clean Chemistry, Inc. | Bacterial control in fermentation systems |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE420430B (en) * | 1978-02-17 | 1981-10-05 | Mo Och Domsjoe Ab | PROCEDURE FOR WHEATING AND EXTRACTION OF LIGNOCELLULOSALLY MATERIALS WITH PEROXID CONTAINING BLACKS |
JPH01148891A (en) * | 1987-12-04 | 1989-06-12 | Nippon Shokubai Kagaku Kogyo Co Ltd | Method for bleaching wood pulp |
FI90795C (en) * | 1990-06-07 | 1994-11-22 | Ahlstroem Oy | Production plant for material or freight flows, especially a cellulose factory |
BE1006057A3 (en) * | 1992-07-06 | 1994-05-03 | Solvay Interox | Method for delignification of chemical pulp. |
BE1007651A3 (en) * | 1993-10-22 | 1995-09-05 | Solvay Interox | Method of laundering of chemical pulp. |
CA2163389A1 (en) * | 1994-11-23 | 1996-05-24 | Malcolm Cronlund | Chlorine-free organosolv pulps |
WO1996020308A1 (en) * | 1994-12-28 | 1996-07-04 | Minerals Technologies Inc. | Bleaching of filled paper |
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 |
JP3698178B2 (en) * | 1995-09-22 | 2005-09-21 | 三菱瓦斯化学株式会社 | Process for bleaching chemical pulp for papermaking |
EP0801170A1 (en) * | 1996-04-12 | 1997-10-15 | Chemoxal Sa | Process for the delignification and/or bleaching of a paper pulp |
FI964715A (en) * | 1996-11-26 | 1998-05-27 | Keskuslaboratorio | Method for bleaching cellulose pulp |
-
1997
- 1997-12-19 FI FI974575A patent/FI112958B/en not_active IP Right Cessation
-
1998
- 1998-12-18 AU AU16743/99A patent/AU1674399A/en not_active Abandoned
- 1998-12-18 AT AT98961279T patent/ATE385526T1/en active
- 1998-12-18 PT PT98961279T patent/PT1040222E/en unknown
- 1998-12-18 BR BRPI9813747-6A patent/BR9813747B1/en not_active IP Right Cessation
- 1998-12-18 ES ES98961279T patent/ES2302362T3/en not_active Expired - Lifetime
- 1998-12-18 EP EP98961279A patent/EP1040222B1/en not_active Expired - Lifetime
- 1998-12-18 WO PCT/FI1998/000993 patent/WO1999032710A1/en active IP Right Grant
- 1998-12-18 JP JP2000525621A patent/JP4499280B2/en not_active Expired - Lifetime
- 1998-12-18 DE DE69839097T patent/DE69839097T2/en not_active Expired - Lifetime
- 1998-12-18 CA CA002315063A patent/CA2315063C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1040222A1 (en) | 2000-10-04 |
CA2315063C (en) | 2008-11-18 |
FI112958B (en) | 2004-02-13 |
BR9813747B1 (en) | 2009-01-13 |
PT1040222E (en) | 2008-05-05 |
JP4499280B2 (en) | 2010-07-07 |
CA2315063A1 (en) | 1999-07-01 |
ES2302362T3 (en) | 2008-07-01 |
FI974575A (en) | 1999-06-20 |
DE69839097T2 (en) | 2009-01-29 |
JP2001527168A (en) | 2001-12-25 |
WO1999032710A1 (en) | 1999-07-01 |
EP1040222B1 (en) | 2008-02-06 |
AU1674399A (en) | 1999-07-12 |
BR9813747A (en) | 2000-10-17 |
FI974575A0 (en) | 1997-12-19 |
ATE385526T1 (en) | 2008-02-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |