DE2548064A1 - Verfahren zur behandlung von hackschnitzeln aus faserholz - Google Patents
Verfahren zur behandlung von hackschnitzeln aus faserholzInfo
- Publication number
- DE2548064A1 DE2548064A1 DE19752548064 DE2548064A DE2548064A1 DE 2548064 A1 DE2548064 A1 DE 2548064A1 DE 19752548064 DE19752548064 DE 19752548064 DE 2548064 A DE2548064 A DE 2548064A DE 2548064 A1 DE2548064 A1 DE 2548064A1
- Authority
- DE
- Germany
- Prior art keywords
- wood chips
- sulphite
- wood
- spraying
- solns
- 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.)
- Pending
Links
- 239000002023 wood Substances 0.000 title claims abstract description 40
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 title claims abstract description 11
- 238000005507 spraying Methods 0.000 title abstract description 5
- 238000007654 immersion Methods 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000029087 digestion Effects 0.000 claims abstract description 5
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 4
- 239000011121 hardwood Substances 0.000 claims description 2
- 229920005610 lignin Polymers 0.000 abstract description 7
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 229920001131 Pulp (paper) Polymers 0.000 abstract 2
- 230000001473 noxious effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 5
- 238000004321 preservation Methods 0.000 description 4
- 238000009736 wetting Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- LVGQIQHJMRUCRM-UHFFFAOYSA-L calcium bisulfite Chemical compound [Ca+2].OS([O-])=O.OS([O-])=O LVGQIQHJMRUCRM-UHFFFAOYSA-L 0.000 description 2
- 235000010260 calcium hydrogen sulphite Nutrition 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000009189 diving Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 240000000731 Fagus sylvatica Species 0.000 description 1
- 235000010099 Fagus sylvatica Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 235000010259 potassium hydrogen sulphite Nutrition 0.000 description 1
- 239000007921 spray 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
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/04—Pretreatment of the finely-divided materials before digesting with acid reacting compounds
Landscapes
- Paper (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD18265974A DD118136A1 (OSRAM) | 1974-11-29 | 1974-11-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2548064A1 true DE2548064A1 (de) | 1976-08-12 |
Family
ID=5498230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19752548064 Pending DE2548064A1 (de) | 1974-11-29 | 1975-10-27 | Verfahren zur behandlung von hackschnitzeln aus faserholz |
Country Status (2)
| Country | Link |
|---|---|
| DD (1) | DD118136A1 (OSRAM) |
| DE (1) | DE2548064A1 (OSRAM) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011127999A1 (de) * | 2010-04-14 | 2011-10-20 | Voith Patent Gmbh | Verfahren zum herstellen von faserstoff aus holz |
-
1974
- 1974-11-29 DD DD18265974A patent/DD118136A1/xx unknown
-
1975
- 1975-10-27 DE DE19752548064 patent/DE2548064A1/de active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011127999A1 (de) * | 2010-04-14 | 2011-10-20 | Voith Patent Gmbh | Verfahren zum herstellen von faserstoff aus holz |
Also Published As
| Publication number | Publication date |
|---|---|
| DD118136A1 (OSRAM) | 1976-02-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OHJ | Non-payment of the annual fee |