ES2045320T3 - PROCEDURE FOR THE BLEACHING OF PAPER PASTA. - Google Patents
PROCEDURE FOR THE BLEACHING OF PAPER PASTA.Info
- Publication number
- ES2045320T3 ES2045320T3 ES89117233T ES89117233T ES2045320T3 ES 2045320 T3 ES2045320 T3 ES 2045320T3 ES 89117233 T ES89117233 T ES 89117233T ES 89117233 T ES89117233 T ES 89117233T ES 2045320 T3 ES2045320 T3 ES 2045320T3
- Authority
- ES
- Spain
- Prior art keywords
- bleaching
- oxygen
- pulp
- procedure
- enzyme treatment
- 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
- 238000004061 bleaching Methods 0.000 title abstract 6
- 238000000034 method Methods 0.000 title abstract 3
- 235000015927 pasta Nutrition 0.000 title 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 4
- 239000001301 oxygen Substances 0.000 abstract 4
- 229910052760 oxygen Inorganic materials 0.000 abstract 4
- 102000004190 Enzymes Human genes 0.000 abstract 3
- 108090000790 Enzymes Proteins 0.000 abstract 3
- 239000000126 substance Substances 0.000 abstract 3
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 abstract 2
- 230000003647 oxidation Effects 0.000 abstract 2
- 238000007254 oxidation reaction Methods 0.000 abstract 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 abstract 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract 1
- 239000004155 Chlorine dioxide Substances 0.000 abstract 1
- 239000007844 bleaching agent Substances 0.000 abstract 1
- 239000000460 chlorine Substances 0.000 abstract 1
- 229910052801 chlorine Inorganic materials 0.000 abstract 1
- 235000019398 chlorine dioxide Nutrition 0.000 abstract 1
- 231100000167 toxic agent Toxicity 0.000 abstract 1
- 238000005406 washing Methods 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
- 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
-
- 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
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Paper (AREA)
- Noodles (AREA)
- Cereal-Derived Products (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Hard Magnetic Materials (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Bakery Products And Manufacturing Methods Therefor (AREA)
- Table Devices Or Equipment (AREA)
- Detergent Compositions (AREA)
Abstract
The invention concerns a procedure for the bleaching of pulp using oxygen as an oxidating bleaching chemical. The essential features of the invention are that oxygen is used in the first oxidation stage of the bleaching process, that the pulp is subjected to enzyme treatment, and that after oxygen bleaching and enzyme treatment, the pulp is washed. According to the invention, the subsequent oxidation stages can be implemented using bleaching chemicals containing chlorine, e.g. chlorine gas and/or chlorine dioxide. The use of enzymes allows partial burning of the washings and enables the amounts of toxic compounds in the spent bleach liquor to be reduced, simultaneously lowering its chemical oxygen demand.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI892151A FI86896B (en) | 1989-05-04 | 1989-05-04 | FOERFARANDE FOER BLEKNING AV CELLULOSAMASSA. |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2045320T3 true ES2045320T3 (en) | 1994-01-16 |
Family
ID=8528357
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES89117233T Expired - Lifetime ES2045320T3 (en) | 1989-05-04 | 1989-09-18 | PROCEDURE FOR THE BLEACHING OF PAPER PASTA. |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0395792B1 (en) |
JP (1) | JPH02293486A (en) |
AT (1) | ATE91518T1 (en) |
CA (1) | CA1339593C (en) |
DE (1) | DE68907593D1 (en) |
ES (1) | ES2045320T3 (en) |
FI (1) | FI86896B (en) |
NO (1) | NO172355C (en) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
PT94984A (en) * | 1989-08-14 | 1991-04-18 | Cultor Oy | APPROPRIATE PROCESS FOR WHOLE PULP TO OXYGEN |
SE465320B (en) * | 1990-01-10 | 1991-08-26 | Korsnaes Ab | PREPARATIONS SUBMITTING ENZYMATIC DELIGNIFICATION ACTIVITY, MADE TO MAKE THE SAME AND APPLICATIONS THEREOF |
US5837515A (en) * | 1990-05-16 | 1998-11-17 | Alko-Yhtiot Oy | Enzyme preparations and methods for their production |
JP2859393B2 (en) * | 1990-07-24 | 1999-02-17 | ノボ ノルディスク アクティーゼルスカブ | Cellulase and method for producing the same |
DE4129739A1 (en) * | 1990-09-11 | 1992-03-12 | Sandoz Ag | Chlorine-free bleaching of paper pulp |
JPH04240287A (en) * | 1991-01-21 | 1992-08-27 | Kobe Steel Ltd | Bleaching of pulp |
FI90670C (en) * | 1991-05-02 | 1994-03-10 | Metsae Serla Oy | Treatment of alkali-treated pulp for use in papermaking |
FI108800B (en) * | 1991-05-07 | 2002-03-28 | Iogen Corp | A method and apparatus for using an enzyme in the manufacture and bleaching of pulp |
US5785811A (en) * | 1992-11-09 | 1998-07-28 | The Mead Corporation | Process for treating lignocellulosic material with soybean peroxidase in the presence of peroxide |
US5935836A (en) * | 1994-07-29 | 1999-08-10 | Rohm Enzyme Finland Oy | Actinomadura xylanase sequences and methods of use |
US6300114B1 (en) | 1994-07-29 | 2001-10-09 | Rohm Enzyme Finland Oy | Sequences of xylanase and xylanase expression vectors |
US5871730A (en) * | 1994-07-29 | 1999-02-16 | Universite De Sherbrooke | Thermostable xylanase DNA, protein and methods of use |
US7816129B2 (en) | 1994-07-29 | 2010-10-19 | Ab Enzymes Gmbh | Production and secretion of proteins of bacterial origin in filamentous fungi |
US6824646B2 (en) | 1999-03-23 | 2004-11-30 | Oji Paper Co., Ltd. | Process for oxygen bleaching and enzyme treating lignocellulosic pulp with liquid treatment and recovery |
CA2301371C (en) * | 1999-03-23 | 2009-09-01 | Oji Paper Co., Ltd. | Process for bleaching lignocellulose pulp |
US6942754B2 (en) | 1999-03-23 | 2005-09-13 | Oji Paper Co., Ltd. | Process for producing xylooligosaccharide from lignocellulose pulp |
AU2002226210A1 (en) | 2000-12-22 | 2002-07-08 | Iogen Bio-Products Corporation | Alkaline extraction stages comprising xylanase |
US9096519B2 (en) | 2013-01-10 | 2015-08-04 | California Institute Of Technology | Process for the synthesis of ketones from internal alkenes |
US9586883B2 (en) | 2013-04-19 | 2017-03-07 | California Institute Of Technology | Aldehyde-selective wacker-type oxidation of unbiased alkenes |
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 (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5468402A (en) * | 1977-11-09 | 1979-06-01 | Kogyo Gijutsuin | Property modification of biochemical pulp |
FI81395B (en) * | 1988-03-14 | 1990-06-29 | Cultor Oy | FOERFARANDE FOER BLEKNING AV CELLULOSAMASSA. |
FI90888B (en) * | 1989-02-14 | 1993-12-31 | Enso Gutzeit Oy | Method for bleaching cellulose pulp |
-
1989
- 1989-05-04 FI FI892151A patent/FI86896B/en not_active Application Discontinuation
- 1989-09-18 DE DE8989117233T patent/DE68907593D1/en not_active Expired - Lifetime
- 1989-09-18 ES ES89117233T patent/ES2045320T3/en not_active Expired - Lifetime
- 1989-09-18 EP EP89117233A patent/EP0395792B1/en not_active Revoked
- 1989-09-18 JP JP1241666A patent/JPH02293486A/en active Pending
- 1989-09-18 AT AT89117233T patent/ATE91518T1/en not_active IP Right Cessation
- 1989-09-18 NO NO893716A patent/NO172355C/en not_active IP Right Cessation
- 1989-09-18 CA CA000611771A patent/CA1339593C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0395792B1 (en) | 1993-07-14 |
JPH02293486A (en) | 1990-12-04 |
FI892151A0 (en) | 1989-05-04 |
EP0395792A3 (en) | 1991-01-16 |
ATE91518T1 (en) | 1993-07-15 |
FI86896B (en) | 1992-07-15 |
NO893716D0 (en) | 1989-09-18 |
CA1339593C (en) | 1997-12-23 |
NO893716L (en) | 1990-11-05 |
EP0395792A2 (en) | 1990-11-07 |
NO172355C (en) | 1993-07-07 |
FI892151A (en) | 1990-11-05 |
DE68907593D1 (en) | 1993-08-19 |
NO172355B (en) | 1993-03-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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