SE461990B - Metod och apparat foer tvaettning av pappersmassa - Google Patents
Metod och apparat foer tvaettning av pappersmassaInfo
- Publication number
- SE461990B SE461990B SE8306511A SE8306511A SE461990B SE 461990 B SE461990 B SE 461990B SE 8306511 A SE8306511 A SE 8306511A SE 8306511 A SE8306511 A SE 8306511A SE 461990 B SE461990 B SE 461990B
- Authority
- SE
- Sweden
- Prior art keywords
- liquid
- mat
- washing liquid
- washing
- screen
- Prior art date
Links
- 238000005406 washing Methods 0.000 title claims description 124
- 238000000034 method Methods 0.000 title claims description 31
- 229920001131 Pulp (paper) Polymers 0.000 title claims 3
- 239000007788 liquid Substances 0.000 claims description 115
- 239000002002 slurry Substances 0.000 claims description 17
- 239000011148 porous material Substances 0.000 claims description 16
- 239000000835 fiber Substances 0.000 claims description 14
- 239000011159 matrix material Substances 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 238000004061 bleaching Methods 0.000 claims description 7
- 238000011010 flushing procedure Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 5
- 229920005610 lignin Polymers 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 claims description 2
- 230000001174 ascending effect Effects 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims 3
- 230000029087 digestion Effects 0.000 claims 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 230000008707 rearrangement Effects 0.000 claims 1
- 230000000630 rising effect Effects 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000000706 filtrate Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 239000013055 pulp slurry Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 206010040007 Sense of oppression Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000002101 lytic effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000012360 testing method 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
- D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
- D21C9/06—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents in filters ; Washing of concentrated pulp, e.g. pulp mats, on filtering surfaces
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Treatment Of Fiber Materials (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/447,960 US4491501A (en) | 1982-12-08 | 1982-12-08 | Method for washing a fibrous particle mat with wash liquor having an impact energy sufficient to disrupt and rearrange the interstitial pore matrix |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE8306511D0 SE8306511D0 (sv) | 1983-11-25 |
| SE8306511L SE8306511L (sv) | 1984-06-09 |
| SE461990B true SE461990B (sv) | 1990-04-23 |
Family
ID=23778448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8306511A SE461990B (sv) | 1982-12-08 | 1983-11-25 | Metod och apparat foer tvaettning av pappersmassa |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4491501A (fi) |
| CA (1) | CA1225267A (fi) |
| FI (1) | FI75005C (fi) |
| SE (1) | SE461990B (fi) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4670099A (en) * | 1983-02-04 | 1987-06-02 | Lavalley Industrial Plastics, Inc. | Method and apparatus for washing a mat of pulp stock on a drum filter |
| US4680088A (en) * | 1985-02-21 | 1987-07-14 | Michael Scheck | Process for removing ink particles from paper products |
| US4719772A (en) * | 1985-02-21 | 1988-01-19 | Michael Scheck | Apparatus for removing ink particles from paper products |
| FI74752C (fi) * | 1986-03-20 | 1992-12-01 | Ahlstroem Oy | Foerfarande och anordning foer tvaettning av cellulosa |
| US5156750A (en) * | 1987-07-08 | 1992-10-20 | A. Ahlstrom Corporation | Method and apparatus for thickening a fiber suspension and removing fine particles therefrom |
| EP0298499B1 (en) * | 1987-07-08 | 1994-03-16 | A. Ahlstrom Corporation | Method and apparatus for thickening fiber suspension |
| US4986881A (en) * | 1989-06-28 | 1991-01-22 | Kamyr, Inc. | Method and apparatus for liquid treatment of and liquid extraction on a paper pulp |
| US5266168A (en) * | 1991-12-20 | 1993-11-30 | The Black Clawson Company | Gravity type pulp washer or thickener with rotating disrupters |
| US5965017A (en) * | 1997-07-15 | 1999-10-12 | Paper Inc. | Sealed shower system for rotary vacuum filter |
| FI118277B (fi) | 2002-03-25 | 2007-09-14 | Environics Oy | Kennorakenne, laite ja menetelmä |
| US20040060674A1 (en) * | 2002-10-01 | 2004-04-01 | George Seymour | Method for measuring the percent consistency of pulp leaving a blow tank |
| DE102004033328A1 (de) * | 2004-07-09 | 2006-02-09 | Bhs-Sonthofen Gmbh | Filter mit Feststoff-Resuspendierung |
| SE528722C2 (sv) * | 2005-06-03 | 2007-01-30 | Metso Paper Inc | Anordning för behandling av cellulosamassa i en tvättapparat anordnad med en förstärkande spant |
| SE542326C2 (en) * | 2018-06-21 | 2020-04-14 | Valmet Oy | Vacuum filter |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3032100A (en) * | 1958-12-31 | 1962-05-01 | Schibbye Lauritz Benedictus | Device for even spreading of water onto a running web, particularly a cellulosic pulp web |
| GB1010296A (en) * | 1961-08-25 | 1965-11-17 | Eimco Corp | Improvements in or relating to aqueous caustic soda production |
| US3363774A (en) * | 1965-04-12 | 1968-01-16 | Improved Machinery Inc | Rotary drum filter |
| US3409139A (en) * | 1965-09-03 | 1968-11-05 | Dorr Oliver Inc | Rotary-vacuum filter drum and suction box arrangement |
| US3403786A (en) * | 1966-08-25 | 1968-10-01 | Improved Machinery Inc | Rotary drum filter |
| US3487941A (en) * | 1967-05-10 | 1970-01-06 | Pertti Olavi Haapamaki | Pressure washer |
| SE406944B (sv) * | 1976-04-14 | 1979-03-05 | Mo Och Domsjoe Ab | Forfarande for att reglera tillsatsen av suspensinsvetska vid kontinuerlig tvettning av suspensioner |
| US4297164A (en) * | 1980-03-10 | 1981-10-27 | Weyerhaeuser Company | Process for displacement washing of porous media |
-
1982
- 1982-12-08 US US06/447,960 patent/US4491501A/en not_active Expired - Fee Related
-
1983
- 1983-11-25 SE SE8306511A patent/SE461990B/sv not_active IP Right Cessation
- 1983-12-05 CA CA000442550A patent/CA1225267A/en not_active Expired
- 1983-12-05 FI FI834460A patent/FI75005C/fi not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| SE8306511L (sv) | 1984-06-09 |
| US4491501A (en) | 1985-01-01 |
| FI75005B (fi) | 1987-12-31 |
| FI834460A0 (fi) | 1983-12-05 |
| CA1225267A (en) | 1987-08-11 |
| FI75005C (fi) | 1988-04-11 |
| FI834460L (fi) | 1984-06-09 |
| SE8306511D0 (sv) | 1983-11-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |
Ref document number: 8306511-0 Effective date: 19930610 Format of ref document f/p: F |