CA2482556C - Procede de production de pate a papier non blanchie a tres faible demande chimique en oxygene - Google Patents
Procede de production de pate a papier non blanchie a tres faible demande chimique en oxygene Download PDFInfo
- Publication number
- CA2482556C CA2482556C CA002482556A CA2482556A CA2482556C CA 2482556 C CA2482556 C CA 2482556C CA 002482556 A CA002482556 A CA 002482556A CA 2482556 A CA2482556 A CA 2482556A CA 2482556 C CA2482556 C CA 2482556C
- Authority
- CA
- Canada
- Prior art keywords
- pulp
- soaking
- unbleached
- washing
- steps
- 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 description 33
- 238000002791 soaking Methods 0.000 claims abstract description 24
- 238000005406 washing Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 20
- 239000001301 oxygen Substances 0.000 claims description 20
- 229910052760 oxygen Inorganic materials 0.000 claims description 20
- 239000007844 bleaching agent Substances 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 5
- 235000000346 sugar Nutrition 0.000 claims description 5
- 150000008163 sugars Chemical class 0.000 claims description 5
- 239000011368 organic material Substances 0.000 claims description 4
- 238000004061 bleaching Methods 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims 1
- 238000004076 pulp bleaching Methods 0.000 claims 1
- 238000009792 diffusion process Methods 0.000 description 20
- 239000004568 cement Substances 0.000 description 16
- 238000003860 storage Methods 0.000 description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 239000000835 fiber Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 239000002023 wood Substances 0.000 description 8
- 241000196324 Embryophyta Species 0.000 description 7
- 229920001131 Pulp (paper) Polymers 0.000 description 7
- 239000002131 composite material Substances 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000003518 caustics Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 229920002522 Wood fibre Polymers 0.000 description 4
- 239000002655 kraft paper Substances 0.000 description 4
- 241000894007 species Species 0.000 description 4
- 239000002025 wood fiber Substances 0.000 description 4
- 239000004567 concrete Substances 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229920003043 Cellulose fiber Polymers 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000004537 pulping Methods 0.000 description 2
- 230000003252 repetitive effect Effects 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 244000283070 Abies balsamea Species 0.000 description 1
- 235000007173 Abies balsamea Nutrition 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 239000004155 Chlorine dioxide Substances 0.000 description 1
- 235000014466 Douglas bleu Nutrition 0.000 description 1
- 244000166124 Eucalyptus globulus Species 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 240000000797 Hibiscus cannabinus Species 0.000 description 1
- 240000006240 Linum usitatissimum Species 0.000 description 1
- 235000004431 Linum usitatissimum Nutrition 0.000 description 1
- 241000218657 Picea Species 0.000 description 1
- 241001236219 Pinus echinata Species 0.000 description 1
- 235000005018 Pinus echinata Nutrition 0.000 description 1
- 235000017339 Pinus palustris Nutrition 0.000 description 1
- 241000218621 Pinus radiata Species 0.000 description 1
- 235000008577 Pinus radiata Nutrition 0.000 description 1
- 240000001416 Pseudotsuga menziesii Species 0.000 description 1
- 235000005386 Pseudotsuga menziesii var menziesii Nutrition 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000013055 pulp slurry Substances 0.000 description 1
- 239000011395 ready-mix concrete Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- -1 stucco Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- BUUPQKDIAURBJP-UHFFFAOYSA-N sulfinic acid Chemical compound OS=O BUUPQKDIAURBJP-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/02—Cellulosic materials
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
Abstract
Produit de pâte à papier à faible demande chimique en oxygène et comprenant une pâte à papier non blanchie qui est trempée et lavée dans une eau alcaline sur une durée suffisante pour que la demande chimique en oxygène, après trempage et lavage, soit inférieure ou égale à 3,0 kg/1000 kg de pâte à papier sèche. Pour produire la pâte à papier, on trempe et on lave de manière répétitive une pâte à papier non blanchie dans une eau alcaline qui n'est jamais autorisée à descendre au-dessous d'un pH de 7,0. La pâte à papier est trempée et lavée sur une durée totale d'au moins 400 minutes, à une température élevée, afin d'obtenir le produit de pâte à papier à faible demande chimique en oxygène.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US2002/015522 WO2003097930A1 (fr) | 2002-05-15 | 2002-05-15 | Procede de production de pate a papier non blanchie a tres faible demande chimique en oxygene |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2482556A1 CA2482556A1 (fr) | 2003-11-27 |
| CA2482556C true CA2482556C (fr) | 2008-09-23 |
Family
ID=33476215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002482556A Expired - Fee Related CA2482556C (fr) | 2002-05-15 | 2002-05-15 | Procede de production de pate a papier non blanchie a tres faible demande chimique en oxygene |
Country Status (5)
| Country | Link |
|---|---|
| AU (1) | AU2002309875B2 (fr) |
| BR (1) | BR0215714A (fr) |
| CA (1) | CA2482556C (fr) |
| NO (1) | NO20045384L (fr) |
| SE (1) | SE0402582L (fr) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3148106A (en) * | 1964-01-29 | 1964-09-08 | Rayonier Inc | Pulp refining |
-
2002
- 2002-05-15 CA CA002482556A patent/CA2482556C/fr not_active Expired - Fee Related
- 2002-05-15 AU AU2002309875A patent/AU2002309875B2/en not_active Ceased
- 2002-05-15 BR BR0215714-4A patent/BR0215714A/pt not_active IP Right Cessation
-
2004
- 2004-10-26 SE SE0402582A patent/SE0402582L/xx not_active Application Discontinuation
- 2004-12-09 NO NO20045384A patent/NO20045384L/no unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CA2482556A1 (fr) | 2003-11-27 |
| AU2002309875A1 (en) | 2003-12-02 |
| NO20045384L (no) | 2004-12-09 |
| BR0215714A (pt) | 2005-02-22 |
| SE0402582D0 (sv) | 2004-10-26 |
| SE0402582L (sv) | 2004-12-08 |
| AU2002309875B2 (en) | 2006-08-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |