CA2036173C - Process for the chlorine-free bleaching and delignification of cellulose - Google Patents
Process for the chlorine-free bleaching and delignification of celluloseInfo
- Publication number
- CA2036173C CA2036173C CA002036173A CA2036173A CA2036173C CA 2036173 C CA2036173 C CA 2036173C CA 002036173 A CA002036173 A CA 002036173A CA 2036173 A CA2036173 A CA 2036173A CA 2036173 C CA2036173 C CA 2036173C
- Authority
- CA
- Canada
- Prior art keywords
- cellulose
- cyanamide
- process according
- weight
- peroxide
- 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 - Fee Related
Links
- 229920002678 cellulose Polymers 0.000 title claims abstract description 49
- 239000001913 cellulose Substances 0.000 title claims abstract description 43
- 238000004061 bleaching Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 26
- 150000002978 peroxides Chemical class 0.000 claims abstract description 26
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 claims abstract description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000001301 oxygen Substances 0.000 claims abstract description 17
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 17
- 150000001912 cyanamides Chemical class 0.000 claims abstract description 12
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 4
- 235000010980 cellulose Nutrition 0.000 description 36
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 33
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 22
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 12
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 10
- 239000000460 chlorine Substances 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- 229910052801 chlorine Inorganic materials 0.000 description 9
- 238000000605 extraction Methods 0.000 description 8
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 4
- 239000004155 Chlorine dioxide Substances 0.000 description 3
- 235000019398 chlorine dioxide Nutrition 0.000 description 3
- 238000002203 pretreatment Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 239000012190 activator Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- MVXMNHYVCLMLDD-UHFFFAOYSA-N 4-methoxynaphthalene-1-carbaldehyde Chemical compound C1=CC=C2C(OC)=CC=C(C=O)C2=C1 MVXMNHYVCLMLDD-UHFFFAOYSA-N 0.000 description 1
- 241000609240 Ambelania acida Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 238000004182 chemical digestion Methods 0.000 description 1
- JFBJUMZWZDHTIF-UHFFFAOYSA-N chlorine chlorite Inorganic materials ClOCl=O JFBJUMZWZDHTIF-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- GOKQBRXJUKTYSC-UHFFFAOYSA-N magnesium;azanidylidenemethylideneazanide Chemical compound [Mg+2].[N-]=C=[N-] GOKQBRXJUKTYSC-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 125000000864 peroxy group Chemical group O(O*)* 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 description 1
- MBEGFNBBAVRKLK-UHFFFAOYSA-N sodium;iminomethylideneazanide Chemical compound [Na+].[NH-]C#N MBEGFNBBAVRKLK-UHFFFAOYSA-N 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 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
- D21C9/147—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
- D21C9/1026—Other features in bleaching processes
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
-
- 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
- D21C9/16—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)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Cereal-Derived Products (AREA)
- Gyroscopes (AREA)
- Eye Examination Apparatus (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4004364A DE4004364A1 (de) | 1990-02-13 | 1990-02-13 | Verfahren zur chlorfreien bleiche und delignifizierung von zellstoff |
| DEP4004364.9 | 1990-02-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2036173A1 CA2036173A1 (en) | 1991-08-14 |
| CA2036173C true CA2036173C (en) | 1996-01-23 |
Family
ID=6400030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002036173A Expired - Fee Related CA2036173C (en) | 1990-02-13 | 1991-02-12 | Process for the chlorine-free bleaching and delignification of cellulose |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0442425B1 (enrdf_load_stackoverflow) |
| AT (1) | ATE103649T1 (enrdf_load_stackoverflow) |
| CA (1) | CA2036173C (enrdf_load_stackoverflow) |
| DE (2) | DE4004364A1 (enrdf_load_stackoverflow) |
| ES (1) | ES2051531T3 (enrdf_load_stackoverflow) |
| FI (1) | FI910703A7 (enrdf_load_stackoverflow) |
| NO (1) | NO176329C (enrdf_load_stackoverflow) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4031597A1 (de) * | 1990-10-05 | 1992-04-09 | Sueddeutsche Kalkstickstoff | Verfahren zur chlorarmen bleiche und delignifizierung von zellstoff |
| BR9205490A (pt) * | 1991-01-03 | 1994-04-05 | Union Camp Patent Holding | Processos para a fabricacao de pasta branqueada tendo um britho GE final de pelo menos cerca de 75 e para a deslignificacao e branqueamento de uma pasta lignocelulosica |
| DE4138006A1 (de) * | 1991-11-19 | 1993-05-27 | Degussa | Verfahren zur verbesserung des weissgehaltes bei der peroxidbleiche von zellstoffen durch den zusatz von cyanaten |
| US5620563A (en) * | 1994-10-31 | 1997-04-15 | Pulp Paper Res Inst | Process for delignification and bleaching of chemical wood pulps with hydrogen peroxide and a dicyandiamide activator |
Family Cites Families (4)
| 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 |
| DE3544398A1 (de) * | 1985-12-16 | 1987-06-19 | Sueddeutsche Kalkstickstoff | Verfahren zur bleiche und delignifizierung von zellstoffhaltigen produkten |
| DE3714107A1 (de) * | 1987-04-28 | 1988-11-10 | Sueddeutsche Kalkstickstoff | Verfahren zur entfernung von rest-wasserstoffperoxid aus waessrigen loesungen |
| DE3802401A1 (de) * | 1988-01-28 | 1989-08-03 | Degussa | Verfahren zur herstellung von halbgebleichtem kraftzellstoff |
-
1990
- 1990-02-13 DE DE4004364A patent/DE4004364A1/de active Granted
-
1991
- 1991-02-06 NO NO910458A patent/NO176329C/no unknown
- 1991-02-11 AT AT91101890T patent/ATE103649T1/de not_active IP Right Cessation
- 1991-02-11 EP EP91101890A patent/EP0442425B1/de not_active Expired - Lifetime
- 1991-02-11 DE DE91101890T patent/DE59101249D1/de not_active Expired - Fee Related
- 1991-02-11 ES ES91101890T patent/ES2051531T3/es not_active Expired - Lifetime
- 1991-02-12 CA CA002036173A patent/CA2036173C/en not_active Expired - Fee Related
- 1991-02-13 FI FI910703A patent/FI910703A7/fi not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0442425A1 (de) | 1991-08-21 |
| NO176329B (no) | 1994-12-05 |
| ATE103649T1 (de) | 1994-04-15 |
| NO910458D0 (no) | 1991-02-06 |
| DE4004364C2 (enrdf_load_stackoverflow) | 1992-11-19 |
| DE4004364A1 (de) | 1991-08-14 |
| NO910458L (no) | 1991-08-14 |
| NO176329C (no) | 1995-03-15 |
| FI910703L (fi) | 1991-08-14 |
| DE59101249D1 (de) | 1994-05-05 |
| ES2051531T3 (es) | 1994-06-16 |
| CA2036173A1 (en) | 1991-08-14 |
| FI910703A0 (fi) | 1991-02-13 |
| EP0442425B1 (de) | 1994-03-30 |
| FI910703A7 (fi) | 1991-08-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |