CA2446407C - Method and apparatus for recovering fibre and fibre-based solids from a filtrate of the mechanical or chemi-mechanical wood pulp industry, said filtrate containing both solids andlipophilic extractive material - Google Patents
Method and apparatus for recovering fibre and fibre-based solids from a filtrate of the mechanical or chemi-mechanical wood pulp industry, said filtrate containing both solids andlipophilic extractive material Download PDFInfo
- Publication number
- CA2446407C CA2446407C CA002446407A CA2446407A CA2446407C CA 2446407 C CA2446407 C CA 2446407C CA 002446407 A CA002446407 A CA 002446407A CA 2446407 A CA2446407 A CA 2446407A CA 2446407 C CA2446407 C CA 2446407C
- Authority
- CA
- Canada
- Prior art keywords
- filtrate
- fibre
- centrifuge
- solids
- pulp
- 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
- 238000000034 method Methods 0.000 title claims abstract description 161
- 239000007787 solid Substances 0.000 title claims abstract description 127
- 239000000835 fiber Substances 0.000 title claims abstract description 85
- 239000000463 material Substances 0.000 title claims abstract description 32
- 229920001131 Pulp (paper) Polymers 0.000 title claims abstract description 20
- 239000000706 filtrate Substances 0.000 title claims description 155
- 239000002023 wood Substances 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims description 88
- 239000007788 liquid Substances 0.000 claims description 41
- 238000004061 bleaching Methods 0.000 claims description 20
- 239000002562 thickening agent Substances 0.000 claims description 18
- 238000005406 washing Methods 0.000 claims description 17
- 230000008719 thickening Effects 0.000 claims description 14
- 230000001133 acceleration Effects 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 5
- 238000007670 refining Methods 0.000 claims description 5
- 238000007790 scraping Methods 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 54
- 238000000926 separation method Methods 0.000 abstract description 27
- 238000004519 manufacturing process Methods 0.000 abstract description 17
- 230000009467 reduction Effects 0.000 abstract description 4
- 239000000084 colloidal system Substances 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 description 51
- 239000000725 suspension Substances 0.000 description 30
- 238000004088 simulation Methods 0.000 description 23
- 230000014759 maintenance of location Effects 0.000 description 20
- 230000004087 circulation Effects 0.000 description 19
- 239000000123 paper Substances 0.000 description 19
- 238000001914 filtration Methods 0.000 description 17
- 238000012216 screening Methods 0.000 description 15
- 238000010790 dilution Methods 0.000 description 14
- 239000012895 dilution Substances 0.000 description 14
- 239000011343 solid material Substances 0.000 description 11
- 238000012360 testing method Methods 0.000 description 8
- 230000007423 decrease Effects 0.000 description 7
- 239000012071 phase Substances 0.000 description 7
- 230000002829 reductive effect Effects 0.000 description 7
- 238000004062 sedimentation Methods 0.000 description 6
- 239000007844 bleaching agent Substances 0.000 description 5
- 239000000356 contaminant Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000004537 pulping Methods 0.000 description 5
- 239000013505 freshwater Substances 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 102100031260 Acyl-coenzyme A thioesterase THEM4 Human genes 0.000 description 3
- 101000638510 Homo sapiens Acyl-coenzyme A thioesterase THEM4 Proteins 0.000 description 3
- 239000012223 aqueous fraction Substances 0.000 description 3
- 238000005188 flotation Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 241000894007 species Species 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 244000191761 Sida cordifolia Species 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 241000218657 Picea Species 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 241000183024 Populus tremula Species 0.000 description 1
- 241000220317 Rosa Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012067 mathematical method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
-
- 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
Landscapes
- Paper (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Extraction Or Liquid Replacement (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20010967 | 2001-05-09 | ||
| FI20010967A FI110580B (fi) | 2001-05-09 | 2001-05-09 | Menetelmä kuidun sekä kuitupohjaisen kiintoaineen talteenottamiseksi sekä rasvaliukoisten uuteaineiden erottamiseksi |
| PCT/FI2002/000391 WO2002090647A1 (en) | 2001-05-09 | 2002-05-07 | Method and apparatus for recovering fibre and fibre-based solids from filtrates containing both solids and liposoluble extractive agents of mechanical or chemi-mechanical pulp industry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2446407A1 CA2446407A1 (en) | 2002-11-14 |
| CA2446407C true CA2446407C (en) | 2010-01-12 |
Family
ID=8561155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002446407A Expired - Fee Related CA2446407C (en) | 2001-05-09 | 2002-05-07 | Method and apparatus for recovering fibre and fibre-based solids from a filtrate of the mechanical or chemi-mechanical wood pulp industry, said filtrate containing both solids andlipophilic extractive material |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1392913B1 (de) |
| AT (1) | ATE435328T1 (de) |
| CA (1) | CA2446407C (de) |
| DE (1) | DE60232791D1 (de) |
| FI (1) | FI110580B (de) |
| WO (1) | WO2002090647A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392381B (zh) * | 2011-08-02 | 2013-09-25 | 华南理工大学 | 一种化机浆废液碱回收预处理方法 |
| AR122640A1 (es) | 2020-06-17 | 2022-09-28 | Suzano Sa | Método para tratar un condensado en un proceso de fabricación de pulpa |
| FI20215862A1 (en) * | 2021-08-17 | 2023-02-18 | Metsae Board Oyj | Process, uses thereof, pulp composition and system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD223479A1 (de) * | 1984-04-12 | 1985-06-12 | Zellstoff U Papierfabrik Rosen | Verfahren zur mechanischen entharzung von sulfitzellstoff |
| FI81396C (fi) * | 1988-10-25 | 1990-10-10 | Enso Gutzeit Oy | Foerfarande foer behandling av avfallsvatten fraon traefoeraedlingsindustrins massaframstaellningsprocesser. |
| US5321898A (en) * | 1992-06-19 | 1994-06-21 | Decanter Machine, Inc. | Centrifugal screen bowl dryer |
| US5468396A (en) * | 1994-03-16 | 1995-11-21 | Pulp And Paper Research Institute Of Canada | Centrifugal cleaning of pulp and paper process liquids |
-
2001
- 2001-05-09 FI FI20010967A patent/FI110580B/fi not_active IP Right Cessation
-
2002
- 2002-05-07 AT AT02722318T patent/ATE435328T1/de not_active IP Right Cessation
- 2002-05-07 WO PCT/FI2002/000391 patent/WO2002090647A1/en not_active Ceased
- 2002-05-07 DE DE60232791T patent/DE60232791D1/de not_active Expired - Lifetime
- 2002-05-07 EP EP02722318A patent/EP1392913B1/de not_active Expired - Lifetime
- 2002-05-07 CA CA002446407A patent/CA2446407C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| FI20010967A0 (fi) | 2001-05-09 |
| DE60232791D1 (de) | 2009-08-13 |
| FI110580B (fi) | 2003-02-28 |
| ATE435328T1 (de) | 2009-07-15 |
| EP1392913A1 (de) | 2004-03-03 |
| EP1392913B1 (de) | 2009-07-01 |
| CA2446407A1 (en) | 2002-11-14 |
| WO2002090647A1 (en) | 2002-11-14 |
| FI20010967L (fi) | 2002-11-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |