DE2441579A1 - Verfahren und vorrichtung zur behandlung von zellulosemasse mit sauerstoff unter alkalischen bedingungen bei erhoehtem druck und erhoehter temperatur - Google Patents
Verfahren und vorrichtung zur behandlung von zellulosemasse mit sauerstoff unter alkalischen bedingungen bei erhoehtem druck und erhoehter temperaturInfo
- Publication number
- DE2441579A1 DE2441579A1 DE2441579A DE2441579A DE2441579A1 DE 2441579 A1 DE2441579 A1 DE 2441579A1 DE 2441579 A DE2441579 A DE 2441579A DE 2441579 A DE2441579 A DE 2441579A DE 2441579 A1 DE2441579 A1 DE 2441579A1
- Authority
- DE
- Germany
- Prior art keywords
- oxygen
- mass
- suspension
- reaction
- pressure
- 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.)
- Withdrawn
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 239000001301 oxygen Substances 0.000 title claims abstract description 29
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 29
- 229920002678 cellulose Polymers 0.000 title abstract description 8
- 239000001913 cellulose Substances 0.000 title abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000000725 suspension Substances 0.000 claims abstract description 10
- 239000003513 alkali Substances 0.000 claims abstract description 5
- 230000035484 reaction time Effects 0.000 claims abstract 2
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 230000008961 swelling Effects 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000002023 wood Substances 0.000 claims description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 4
- 229910001882 dioxygen Inorganic materials 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000006194 liquid suspension Substances 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims 2
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 claims 1
- 238000005086 pumping Methods 0.000 claims 1
- 150000002978 peroxides Chemical class 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000003223 protective agent Substances 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 238000003260 vortexing Methods 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
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI2736/73A FI53848C (fi) | 1973-09-03 | 1973-09-03 | Foerfarande foer behandling av fibermassa med syre under alkaliska betingelser vid foerhoejt tryck och temperatur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2441579A1 true DE2441579A1 (de) | 1975-03-13 |
Family
ID=8507529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2441579A Withdrawn DE2441579A1 (de) | 1973-09-03 | 1974-08-30 | Verfahren und vorrichtung zur behandlung von zellulosemasse mit sauerstoff unter alkalischen bedingungen bei erhoehtem druck und erhoehter temperatur |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5070601A (enExample) |
| CA (1) | CA1047209A (enExample) |
| DE (1) | DE2441579A1 (enExample) |
| FI (1) | FI53848C (enExample) |
| SE (1) | SE412610B (enExample) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4288288A (en) * | 1979-06-15 | 1981-09-08 | Weyerhaeuser Company | Apparatus for mixing chemicals into pulp at a refiner inlet |
| WO1996030586A1 (en) * | 1995-03-28 | 1996-10-03 | Kvaerner Pulping Ab | Method and equipment for heating and pressuring a fibre pulp suspension during transportation to a bleaching reactor |
| WO1999019560A1 (en) * | 1996-11-25 | 1999-04-22 | A. Ahlström Osakeyhtiö | Method and apparatus for heating pulps |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI77063B (fi) * | 1986-12-17 | 1988-09-30 | Ahlstroem Oy | Foerfarande foer effektivering av fibersuspensionstvaett. |
| SE522593C2 (sv) * | 1999-07-06 | 2004-02-24 | Kvaerner Pulping Tech | System och förfarande för syragasdelignifiering av massa av lignocellulosahaltigt material |
| JP4865594B2 (ja) * | 2007-02-27 | 2012-02-01 | 本田技研工業株式会社 | 自動車位置決めシステム |
-
1973
- 1973-09-03 FI FI2736/73A patent/FI53848C/fi active
-
1974
- 1974-08-30 CA CA208,245A patent/CA1047209A/en not_active Expired
- 1974-08-30 DE DE2441579A patent/DE2441579A1/de not_active Withdrawn
- 1974-08-30 SE SE7411012A patent/SE412610B/xx unknown
- 1974-09-03 JP JP49101291A patent/JPS5070601A/ja active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4288288A (en) * | 1979-06-15 | 1981-09-08 | Weyerhaeuser Company | Apparatus for mixing chemicals into pulp at a refiner inlet |
| WO1996030586A1 (en) * | 1995-03-28 | 1996-10-03 | Kvaerner Pulping Ab | Method and equipment for heating and pressuring a fibre pulp suspension during transportation to a bleaching reactor |
| US6221208B1 (en) | 1995-03-28 | 2001-04-24 | Kvaerner Pulping Ab | Method for heating and pressuring a fibre pulp suspension during transportation to a bleaching reactor |
| WO1999019560A1 (en) * | 1996-11-25 | 1999-04-22 | A. Ahlström Osakeyhtiö | Method and apparatus for heating pulps |
| US6491787B2 (en) | 1997-10-14 | 2002-12-10 | Andritz Oy | Method for heating pulps |
Also Published As
| Publication number | Publication date |
|---|---|
| CA1047209A (en) | 1979-01-30 |
| SE412610B (sv) | 1980-03-10 |
| FI53848B (fi) | 1978-05-02 |
| FI273673A7 (enExample) | 1975-03-04 |
| JPS5070601A (enExample) | 1975-06-12 |
| SE7411012L (enExample) | 1975-04-01 |
| FI53848C (fi) | 1978-08-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8141 | Disposal/no request for examination |