CA1123249A - Reducing chemical transfer between treatment stages - Google Patents
Reducing chemical transfer between treatment stagesInfo
- Publication number
- CA1123249A CA1123249A CA343,436A CA343436A CA1123249A CA 1123249 A CA1123249 A CA 1123249A CA 343436 A CA343436 A CA 343436A CA 1123249 A CA1123249 A CA 1123249A
- Authority
- CA
- Canada
- Prior art keywords
- pulp
- mat
- liquid phase
- washer
- fluid
- 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
- 239000000126 substance Substances 0.000 title claims abstract description 68
- 238000012546 transfer Methods 0.000 title claims abstract description 9
- 239000000706 filtrate Substances 0.000 claims abstract description 111
- 239000012530 fluid Substances 0.000 claims abstract description 81
- 238000000034 method Methods 0.000 claims abstract description 54
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical group [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 59
- 230000008569 process Effects 0.000 claims description 52
- 239000007791 liquid phase Substances 0.000 claims description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 44
- 239000013055 pulp slurry Substances 0.000 claims description 28
- 239000000835 fiber Substances 0.000 claims description 27
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 21
- 230000007935 neutral effect Effects 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims 4
- 239000007788 liquid Substances 0.000 abstract description 50
- 238000005406 washing Methods 0.000 abstract description 41
- 230000002378 acidificating effect Effects 0.000 description 19
- 239000013505 freshwater Substances 0.000 description 12
- 238000010790 dilution Methods 0.000 description 10
- 239000012895 dilution Substances 0.000 description 10
- 239000002002 slurry Substances 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000002253 acid Substances 0.000 description 6
- 238000004061 bleaching Methods 0.000 description 6
- 239000007844 bleaching agent Substances 0.000 description 6
- 238000002955 isolation Methods 0.000 description 6
- 238000003860 storage Methods 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000010979 pH adjustment Methods 0.000 description 4
- 239000012159 carrier gas Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 238000004537 pulping Methods 0.000 description 2
- 229940083608 sodium hydroxide Drugs 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 241000125205 Anethum Species 0.000 description 1
- ROAHDZJDHGLGBA-UHFFFAOYSA-N Canadalin Natural products O=CC1=C(OC)C(OC)=CC=C1CC1C2=CC(OCO3)=C3C=C2CCN1C ROAHDZJDHGLGBA-UHFFFAOYSA-N 0.000 description 1
- 239000004155 Chlorine dioxide Substances 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- ROAHDZJDHGLGBA-QGZVFWFLSA-N canadaline Chemical compound O=CC1=C(OC)C(OC)=CC=C1C[C@@H]1C2=CC(OCO3)=C3C=C2CCN1C ROAHDZJDHGLGBA-QGZVFWFLSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000006385 ozonation reaction Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 238000004076 pulp bleaching Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000725 suspension 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
-
- 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
- D21C9/1073—Bleaching ; Apparatus therefor with O3
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US249279A | 1979-01-11 | 1979-01-11 | |
| US2,492 | 1979-01-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1123249A true CA1123249A (en) | 1982-05-11 |
Family
ID=21701039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA343,436A Expired CA1123249A (en) | 1979-01-11 | 1980-01-10 | Reducing chemical transfer between treatment stages |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5598991A (enrdf_load_stackoverflow) |
| AU (1) | AU527540B2 (enrdf_load_stackoverflow) |
| CA (1) | CA1123249A (enrdf_load_stackoverflow) |
| FI (1) | FI800080A7 (enrdf_load_stackoverflow) |
| FR (1) | FR2446354A1 (enrdf_load_stackoverflow) |
| NO (1) | NO800041L (enrdf_load_stackoverflow) |
| NZ (1) | NZ192583A (enrdf_load_stackoverflow) |
| SE (1) | SE8000250L (enrdf_load_stackoverflow) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE426607B (sv) * | 1982-03-29 | 1983-01-31 | Kamyr Ab | Sett att behandla en massasuspension som er i rorelse lengs en bana medelst fortrengning av massans suspensionsvetska med en eller flera ersettningsvetskor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1106842A (en) * | 1965-01-25 | 1968-03-20 | Electric Reduction Co | Manufacture of cellulosic pulp |
| ZA761255B (en) * | 1975-03-11 | 1977-03-30 | Erco Envirotech Ltd | Bleachplant operation |
| US4104114A (en) * | 1977-05-05 | 1978-08-01 | Erco Envirotech Ltd. | Bleach plant operation |
-
1980
- 1980-01-08 NO NO800041A patent/NO800041L/no unknown
- 1980-01-10 NZ NZ192583A patent/NZ192583A/xx unknown
- 1980-01-10 CA CA343,436A patent/CA1123249A/en not_active Expired
- 1980-01-11 FR FR8000608A patent/FR2446354A1/fr active Granted
- 1980-01-11 JP JP198380A patent/JPS5598991A/ja active Pending
- 1980-01-11 SE SE8000250A patent/SE8000250L/ not_active Application Discontinuation
- 1980-01-11 AU AU54569/80A patent/AU527540B2/en not_active Ceased
- 1980-01-11 FI FI800080A patent/FI800080A7/fi not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| SE8000250L (sv) | 1980-07-12 |
| NO800041L (no) | 1980-07-14 |
| AU5456980A (en) | 1980-07-17 |
| FR2446354A1 (fr) | 1980-08-08 |
| FI800080A7 (fi) | 1980-07-12 |
| JPS5598991A (en) | 1980-07-28 |
| AU527540B2 (en) | 1983-03-10 |
| NZ192583A (en) | 1983-03-15 |
| FR2446354B1 (enrdf_load_stackoverflow) | 1984-10-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry | ||
| MKEX | Expiry |
Effective date: 19990511 |