CA1230709A - Production de pate de bois affinee - Google Patents
Production de pate de bois affineeInfo
- Publication number
- CA1230709A CA1230709A CA000469917A CA469917A CA1230709A CA 1230709 A CA1230709 A CA 1230709A CA 000469917 A CA000469917 A CA 000469917A CA 469917 A CA469917 A CA 469917A CA 1230709 A CA1230709 A CA 1230709A
- Authority
- CA
- Canada
- Prior art keywords
- chips
- hardwood
- pulp
- softwood
- mixture
- 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
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000011121 hardwood Substances 0.000 claims abstract description 53
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 45
- 239000011122 softwood Substances 0.000 claims abstract description 24
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 238000007670 refining Methods 0.000 claims abstract description 14
- 239000000243 solution Substances 0.000 claims abstract description 14
- 229910001854 alkali hydroxide Inorganic materials 0.000 claims abstract description 5
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims abstract description 5
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims abstract description 4
- 239000012670 alkaline solution Substances 0.000 claims abstract description 3
- 235000010265 sodium sulphite Nutrition 0.000 claims abstract description 3
- 238000005470 impregnation Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 2
- 230000027455 binding Effects 0.000 abstract description 5
- 238000009739 binding Methods 0.000 abstract description 5
- 238000002156 mixing Methods 0.000 abstract description 5
- 238000007639 printing Methods 0.000 abstract description 3
- 239000003513 alkali Substances 0.000 description 6
- 238000000227 grinding Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010025 steaming Methods 0.000 description 6
- 241000218657 Picea Species 0.000 description 5
- 238000011282 treatment Methods 0.000 description 5
- 239000002023 wood Substances 0.000 description 5
- 241000183024 Populus tremula Species 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000000149 argon plasma sintering Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 3
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 206010000060 Abdominal distension Diseases 0.000 description 1
- 102100031260 Acyl-coenzyme A thioesterase THEM4 Human genes 0.000 description 1
- 101000638510 Homo sapiens Acyl-coenzyme A thioesterase THEM4 Proteins 0.000 description 1
- -1 Na2SO3 Chemical compound 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 208000024330 bloating Diseases 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000036647 reaction Effects 0.000 description 1
- 230000000930 thermomechanical effect Effects 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
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/02—Pretreatment of the raw materials by chemical or physical means
- D21B1/021—Pretreatment of the raw materials by chemical or physical means by chemical means
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI834576A FI68432C (fi) | 1983-12-13 | 1983-12-13 | Foerfarande foer framstaellning av raffinerad traemassa. |
| FI834576 | 1983-12-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1230709A true CA1230709A (fr) | 1987-12-29 |
Family
ID=8518210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000469917A Expired CA1230709A (fr) | 1983-12-13 | 1984-12-12 | Production de pate de bois affinee |
Country Status (4)
| Country | Link |
|---|---|
| CA (1) | CA1230709A (fr) |
| FI (1) | FI68432C (fr) |
| FR (1) | FR2556376B1 (fr) |
| SU (1) | SU1524815A3 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2723598B1 (fr) * | 1994-08-10 | 1996-10-18 | Sorgho Agro Ind Et Papetier Sa | Procede de demoellage de plantes a moelle, en particulier sorgho, en vue d'obtenir des fibres de qualite papetiere |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1022145A (fr) * | 1950-07-18 | 1953-02-27 | Hellefors Bruks Aktiebolag | Procédé de fabrication de plaques, carton, papier, corps moulés et analogues à partir de matière fibreuse végétale |
| SE416481B (sv) * | 1977-05-02 | 1981-01-05 | Mo Och Domsjoe Ab | Fofarande och anordning for behandling av vedflis for avlegsnande av tungmetaller och harts |
-
1983
- 1983-12-13 FI FI834576A patent/FI68432C/fi not_active IP Right Cessation
-
1984
- 1984-12-11 FR FR8418875A patent/FR2556376B1/fr not_active Expired
- 1984-12-12 CA CA000469917A patent/CA1230709A/fr not_active Expired
- 1984-12-12 SU SU843829103A patent/SU1524815A3/ru active
Also Published As
| Publication number | Publication date |
|---|---|
| FI68432B (fi) | 1985-05-31 |
| FR2556376A1 (fr) | 1985-06-14 |
| FR2556376B1 (fr) | 1989-12-22 |
| FI68432C (fi) | 1987-01-19 |
| SU1524815A3 (ru) | 1989-11-23 |
| FI834576A0 (fi) | 1983-12-13 |
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|---|---|---|
| US4798651A (en) | Process for preparing pulp for paper making | |
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| CA1281856C (fr) | Methode pour reduire la consommation d'energie a l'affinage d'un materiau a teneur de cellulose | |
| JPS61275489A (ja) | 二段階含浸法による漂白したケミメカニカルおよびセミケミカル繊維パルプの製造法 | |
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| CA1230709A (fr) | Production de pate de bois affinee | |
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| SU1002435A1 (ru) | Способ получени термомеханической древесной массы | |
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| SU1094877A1 (ru) | Способ получени целлюлозы | |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |