CA1070058A - Process for washing cellulose pulp from alkali digestion - Google Patents
Process for washing cellulose pulp from alkali digestionInfo
- Publication number
- CA1070058A CA1070058A CA234,520A CA234520A CA1070058A CA 1070058 A CA1070058 A CA 1070058A CA 234520 A CA234520 A CA 234520A CA 1070058 A CA1070058 A CA 1070058A
- Authority
- CA
- Canada
- Prior art keywords
- washing
- stage
- solution
- acid
- 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
Links
- 238000005406 washing Methods 0.000 title claims abstract description 41
- 229920002678 cellulose Polymers 0.000 title claims abstract description 11
- 239000001913 cellulose Substances 0.000 title claims abstract description 11
- 238000002419 base digestion Methods 0.000 title claims abstract description 5
- 238000000034 method Methods 0.000 title claims description 16
- 239000002253 acid Substances 0.000 claims abstract description 21
- 230000001590 oxidative effect Effects 0.000 claims abstract description 6
- 239000000835 fiber Substances 0.000 claims description 17
- 239000000725 suspension Substances 0.000 claims description 15
- 230000020477 pH reduction Effects 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 230000008929 regeneration Effects 0.000 claims description 5
- 238000011069 regeneration method Methods 0.000 claims description 5
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 4
- 238000004061 bleaching Methods 0.000 claims description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 4
- 235000011152 sodium sulphate Nutrition 0.000 claims description 4
- 239000003085 diluting agent Substances 0.000 claims description 3
- 239000007800 oxidant agent Substances 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 9
- 238000005187 foaming Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract 2
- 238000003912 environmental pollution Methods 0.000 abstract 1
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 12
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 239000004155 Chlorine dioxide Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 235000019398 chlorine dioxide Nutrition 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 150000004763 sulfides Chemical class 0.000 description 2
- 229940032330 sulfuric acid Drugs 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- 235000018185 Betula X alpestris Nutrition 0.000 description 1
- 235000018212 Betula X uliginosa Nutrition 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 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
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- XYXNTHIYBIDHGM-UHFFFAOYSA-N ammonium thiosulfate Chemical compound [NH4+].[NH4+].[O-]S([O-])(=O)=S XYXNTHIYBIDHGM-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010795 gaseous waste Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur 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
- D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI2578/74A FI52876C (fi) | 1974-09-03 | 1974-09-03 | Foerfarande foer tvaettning av en cellulosamassa fraon alkalikok |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1070058A true CA1070058A (en) | 1980-01-22 |
Family
ID=8507291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA234,520A Expired CA1070058A (en) | 1974-09-03 | 1975-09-02 | Process for washing cellulose pulp from alkali digestion |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4042452A (cg-RX-API-DMAC7.html) |
| JP (1) | JPS5149906A (cg-RX-API-DMAC7.html) |
| AU (1) | AU497403B2 (cg-RX-API-DMAC7.html) |
| BR (1) | BR7505551A (cg-RX-API-DMAC7.html) |
| CA (1) | CA1070058A (cg-RX-API-DMAC7.html) |
| FI (1) | FI52876C (cg-RX-API-DMAC7.html) |
| FR (1) | FR2283989A1 (cg-RX-API-DMAC7.html) |
| SE (1) | SE420512B (cg-RX-API-DMAC7.html) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4269656A (en) * | 1980-04-02 | 1981-05-26 | Ingersoll-Rand Company | Wood pulp forming system and method of recovering spent chemicals |
| WO1988004706A1 (en) * | 1986-12-22 | 1988-06-30 | Aga Aktiebolag | Method for washing of alcaline pulp |
| JPH0778315B2 (ja) * | 1986-12-22 | 1995-08-23 | エーヂーエー アクチボラグ | アルカリ法パルプの洗浄方法 |
| US5429717A (en) * | 1986-12-22 | 1995-07-04 | Aga Aktiebolag | Method of washing of alkaline pulp by adding carbon dioxide to the pulp |
| SE8605510L (sv) * | 1986-12-22 | 1987-09-17 | Aga Ab | Sett vid tvettning av massa |
| FR2620144B1 (fr) * | 1987-09-08 | 1989-12-08 | Liquid Air Canada | Procede de fabrication de pate a papier blanchie comportant un traitement a l'aide d'acide carbonique apres blanchiment |
| US5139613A (en) * | 1988-01-21 | 1992-08-18 | Canadian Liquid Air Limited | Process for preparing a paper pulp using carbon dioxide as an acidifying agent for a bleached pulp |
| US4975148A (en) * | 1988-12-06 | 1990-12-04 | Ahlstromforetagen Svenska Ab | Cold blow system for batch production of pulp |
| US5352332A (en) * | 1991-01-28 | 1994-10-04 | Maples Gerald E | Process for recycling bleach plant filtrate |
| US5853535A (en) * | 1991-01-28 | 1998-12-29 | Champion International Corporation | Process for manufacturing bleached pulp including recycling |
| US5938892A (en) * | 1991-01-28 | 1999-08-17 | Champion International Corporation | Process for recycling bleach plant filtrate |
| US6245196B1 (en) | 1999-02-02 | 2001-06-12 | Praxair Technology, Inc. | Method and apparatus for pulp yield enhancement |
| FI117391B (fi) * | 2000-05-16 | 2006-09-29 | Andritz Oy | Menetelmä ja laitteisto massan käsittelemiseksi |
| JP4825709B2 (ja) * | 2007-03-15 | 2011-11-30 | 三菱製紙株式会社 | 発泡及びピッチトラブル抑制方法 |
| AU2011229776B2 (en) | 2010-03-23 | 2013-11-28 | International Paper Company | Improved BCTMP filtrate recycling system and method |
| SE541198C2 (en) * | 2016-11-02 | 2019-04-30 | Winnington Ab | Defibrated tobacco raw material |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1683262A (en) * | 1927-04-19 | 1928-09-04 | Brown Co | Process of chemically treating and washing pulp |
| US1798987A (en) * | 1928-09-01 | 1931-03-31 | Champion Fibre Company | Process for the manufacture of a resistant pulp for paper making |
| US2745712A (en) * | 1953-10-22 | 1956-05-15 | Improved Machinery Inc | Process for countercurrent washing of cooking liquor out of pulp |
| US3308012A (en) * | 1963-08-19 | 1967-03-07 | Du Pont | Use of sulfamic acid in chlorination step of multistage bleaching process |
| GB1217833A (en) * | 1967-01-16 | 1970-12-31 | Electric Reduction Co | Improved cellulosic pulp process |
| US3829357A (en) * | 1968-11-20 | 1974-08-13 | Inst Paper Chem | Oxidative manufacture of pulp with chlorine dioxide |
| US3919041A (en) * | 1969-02-06 | 1975-11-11 | Ethyl Corp | Multi-stage chlorine dioxide delignification of wood pulp |
-
1974
- 1974-09-03 FI FI2578/74A patent/FI52876C/fi active
-
1975
- 1975-08-26 AU AU84267/75A patent/AU497403B2/en not_active Expired
- 1975-08-27 US US05/608,034 patent/US4042452A/en not_active Expired - Lifetime
- 1975-08-29 JP JP50105583A patent/JPS5149906A/ja active Pending
- 1975-08-29 BR BR7505551*A patent/BR7505551A/pt unknown
- 1975-09-02 CA CA234,520A patent/CA1070058A/en not_active Expired
- 1975-09-02 SE SE7509732A patent/SE420512B/xx not_active IP Right Cessation
- 1975-09-03 FR FR7526998A patent/FR2283989A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| SE420512B (sv) | 1981-10-12 |
| FI257874A7 (cg-RX-API-DMAC7.html) | 1976-03-04 |
| JPS5149906A (cg-RX-API-DMAC7.html) | 1976-04-30 |
| FI52876C (fi) | 1978-10-17 |
| AU497403B2 (en) | 1978-12-14 |
| FR2283989A1 (fr) | 1976-04-02 |
| FI52876B (cg-RX-API-DMAC7.html) | 1977-08-31 |
| BR7505551A (pt) | 1976-08-03 |
| SE7509732L (sv) | 1976-03-04 |
| FR2283989B1 (cg-RX-API-DMAC7.html) | 1980-11-14 |
| AU8426775A (en) | 1977-03-03 |
| US4042452A (en) | 1977-08-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |