DE1692845B2 - Verfahren zur entfernung mineralischer rueckstaende aus einer aufschlussvorrichtung fuer holzspaene - Google Patents
Verfahren zur entfernung mineralischer rueckstaende aus einer aufschlussvorrichtung fuer holzspaeneInfo
- Publication number
- DE1692845B2 DE1692845B2 DE1967D0051935 DED0051935A DE1692845B2 DE 1692845 B2 DE1692845 B2 DE 1692845B2 DE 1967D0051935 DE1967D0051935 DE 1967D0051935 DE D0051935 A DED0051935 A DE D0051935A DE 1692845 B2 DE1692845 B2 DE 1692845B2
- Authority
- DE
- Germany
- Prior art keywords
- digestion device
- chelating agent
- circulation
- circulation system
- per minute
- 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.)
- Granted
Links
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims description 13
- 239000011707 mineral Substances 0.000 title claims description 13
- 238000000034 method Methods 0.000 title claims description 12
- 239000002023 wood Substances 0.000 title claims description 11
- 230000029087 digestion Effects 0.000 claims description 37
- 239000002738 chelating agent Substances 0.000 claims description 28
- 239000003513 alkali Substances 0.000 claims description 6
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 claims description 4
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 3
- URDCARMUOSMFFI-UHFFFAOYSA-N 2-[2-[bis(carboxymethyl)amino]ethyl-(2-hydroxyethyl)amino]acetic acid Chemical compound OCCN(CC(O)=O)CCN(CC(O)=O)CC(O)=O URDCARMUOSMFFI-UHFFFAOYSA-N 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- 150000001447 alkali salts Chemical class 0.000 claims 1
- 238000010411 cooking Methods 0.000 description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000000243 solution Substances 0.000 description 8
- 239000007864 aqueous solution Substances 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 6
- 239000002253 acid Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004537 pulping Methods 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 241000718541 Tetragastris balsamifera Species 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- -1 alkali metal salts Chemical class 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229940082150 encore Drugs 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009938 salting Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- PHCBRBWANGJMHS-UHFFFAOYSA-J tetrasodium;disulfate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O PHCBRBWANGJMHS-UHFFFAOYSA-J 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/226—Use of compounds avoiding scale formation
Landscapes
- Paper (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US51798366A | 1966-01-03 | 1966-01-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE1692845A1 DE1692845A1 (de) | 1971-10-21 |
| DE1692845B2 true DE1692845B2 (de) | 1977-06-02 |
Family
ID=24062050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1967D0051935 Granted DE1692845B2 (de) | 1966-01-03 | 1967-01-03 | Verfahren zur entfernung mineralischer rueckstaende aus einer aufschlussvorrichtung fuer holzspaene |
Country Status (5)
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1011503A3 (fr) * | 1997-10-17 | 1999-10-05 | Solvay Interox | Fabrication de pate a papier chimique. |
| EP1392914B1 (en) * | 2001-06-06 | 2010-12-22 | Dequest AG | Method and aqueous composition for the production of improved pulp |
| MY138251A (en) * | 2001-06-06 | 2009-05-29 | Thermphos Trading Gmbh | Method for inhibiting calcium salt scale |
| MY129053A (en) * | 2001-06-06 | 2007-03-30 | Thermphos Trading Gmbh | Composition for inhibiting calcium salt scale |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE504423A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1951-02-28 | |||
| FR1145782A (fr) * | 1956-02-18 | 1957-10-29 | Saint Gobain | Perfectionnements au procédé de fabrication des pâtes cellulosiques par cuisson |
| FR72957E (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1956-11-05 | |||
| US3071504A (en) * | 1958-05-12 | 1963-01-01 | Us Movidyn Corp | Paper mill boil out methods and compositions |
| US3143458A (en) * | 1961-10-24 | 1964-08-04 | Stevens Paper Mills Inc | Method of making electrical paper |
-
1966
- 1966-01-03 US US517983A patent/US3448003A/en not_active Expired - Lifetime
- 1966-12-27 NO NO166158A patent/NO118527B/no unknown
- 1966-12-30 FI FI663503A patent/FI48484C/fi active
-
1967
- 1967-01-02 GB GB157/67A patent/GB1125656A/en not_active Expired
- 1967-01-03 DE DE1967D0051935 patent/DE1692845B2/de active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| GB1125656A (en) | 1968-08-28 |
| NO118527B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1970-01-05 |
| DE1692845A1 (de) | 1971-10-21 |
| US3448003A (en) | 1969-06-03 |
| FI48484C (fi) | 1974-10-10 |
| FI48484B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1974-07-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) |