NO119663B - - Google Patents
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- Publication number
- NO119663B NO119663B NO4372/68A NO437268A NO119663B NO 119663 B NO119663 B NO 119663B NO 4372/68 A NO4372/68 A NO 4372/68A NO 437268 A NO437268 A NO 437268A NO 119663 B NO119663 B NO 119663B
- Authority
- NO
- Norway
- Prior art keywords
- tower
- mass
- bleaching
- arms
- scraper blades
- Prior art date
Links
- 239000007788 liquid Substances 0.000 claims description 27
- 238000004061 bleaching Methods 0.000 claims description 20
- 239000007844 bleaching agent Substances 0.000 claims description 19
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 229920002678 cellulose Polymers 0.000 claims description 4
- 239000001913 cellulose Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 description 12
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 10
- 239000003513 alkali Substances 0.000 description 8
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 6
- 239000000460 chlorine Substances 0.000 description 6
- 229910052801 chlorine Inorganic materials 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000004155 Chlorine dioxide Substances 0.000 description 5
- 239000007795 chemical reaction product Substances 0.000 description 5
- 235000019398 chlorine dioxide Nutrition 0.000 description 5
- 238000012216 screening Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000002585 base Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material 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
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 |
|---|---|---|---|
| SE15150/67A SE340216B (fi) | 1967-11-06 | 1967-11-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO119663B true NO119663B (fi) | 1970-06-15 |
Family
ID=20300231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO4372/68A NO119663B (fi) | 1967-11-06 | 1968-11-04 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3599449A (fi) |
| BR (1) | BR6803770D0 (fi) |
| DE (1) | DE1807345A1 (fi) |
| FI (1) | FI48619C (fi) |
| FR (1) | FR1590820A (fi) |
| NO (1) | NO119663B (fi) |
| SE (1) | SE340216B (fi) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3976538A (en) * | 1971-02-02 | 1976-08-24 | Kamyr Aktiebolag | Method for bleaching of cellulosic pulp |
| US3815386A (en) * | 1971-02-02 | 1974-06-11 | Kamyr Ab | Device for bleaching of cellulosic pulp |
| US4172037A (en) * | 1975-10-10 | 1979-10-23 | Kamyr Inc. | Continuous process diffuser |
| FI55878C (fi) * | 1976-04-28 | 1979-10-10 | Ahlstroem Oy | Foerfarande foer behandling av lignocellulosamaterial med klor |
| US4556494A (en) * | 1980-12-04 | 1985-12-03 | Kamyr Aktiebolag | Method of diffusion washing or thickening of pulp |
| US5560229A (en) * | 1994-01-24 | 1996-10-01 | Kvaerner Pulping Technologies Ab | Diffuser |
| SE502274E (sv) * | 1994-01-24 | 1999-04-21 | Kvaerner Pulping Tech | Diffusör samt packbox avsedd att mottaga en stång för höjning och sänkning av ett silpaket hos en sådan diffusör |
| US5836181A (en) * | 1994-04-18 | 1998-11-17 | Kvaerner Pulping Ab | Diffuser |
| US20020129911A1 (en) * | 2000-10-16 | 2002-09-19 | Marcoccia Bruno S. | Process and configuration for providing external upflow/internal downflow in a continuous digester |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2431478A (en) * | 1942-07-25 | 1947-11-25 | Raymond P Hill | Bleaching fibrous material |
| FI41897B (fi) * | 1963-12-23 | 1969-12-01 | Kamyr Ab | |
| SE312269B (fi) * | 1964-12-17 | 1969-07-07 | T Aremaa | |
| SE225814C1 (fi) * | 1965-03-25 | 1969-03-25 |
-
1967
- 1967-11-06 SE SE15150/67A patent/SE340216B/xx unknown
-
1968
- 1968-11-04 NO NO4372/68A patent/NO119663B/no unknown
- 1968-11-05 US US773385A patent/US3599449A/en not_active Expired - Lifetime
- 1968-11-05 FI FI683151A patent/FI48619C/fi active
- 1968-11-06 DE DE19681807345 patent/DE1807345A1/de active Pending
- 1968-11-06 BR BR203770/68A patent/BR6803770D0/pt unknown
- 1968-11-06 FR FR1590820D patent/FR1590820A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1590820A (fi) | 1970-04-20 |
| FI48619C (fi) | 1974-11-11 |
| BR6803770D0 (pt) | 1973-01-16 |
| US3599449A (en) | 1971-08-17 |
| SE340216B (fi) | 1971-11-08 |
| FI48619B (fi) | 1974-07-31 |
| DE1807345A1 (de) | 1969-10-30 |
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