AT50987B - Process for washing out the pulp obtained by the soda and sulphite process. - Google Patents
Process for washing out the pulp obtained by the soda and sulphite process.Info
- Publication number
- AT50987B AT50987B AT50987DA AT50987B AT 50987 B AT50987 B AT 50987B AT 50987D A AT50987D A AT 50987DA AT 50987 B AT50987 B AT 50987B
- Authority
- AT
- Austria
- Prior art keywords
- soda
- sulphite
- washing out
- pulp obtained
- water
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 15
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 title claims description 5
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 title claims description 5
- 238000005406 washing Methods 0.000 title claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000010411 cooking Methods 0.000 claims description 5
- 239000002023 wood Substances 0.000 claims description 2
- 239000002351 wastewater Substances 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Paper (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zum Auswaschen des nach dem Natron-und Sulfitverfahren gewonnenen
Zellstoffes.
Zur Herstellung von Zellstoff für dio Papierfabrikation werden vornehmlich zwei Verfahren angewendet ; das Natronverfahren und das Sulfitvorfahrel1. Bei beiden Verfahren uird
EMI1.1
Substanzen und die vorhandenen Harze usw. zu lösen. Sobald der Kochvorgang beendet ist, wird die Kochlauge abgelassen und die zurückbleibene Holzmasse mit Wasser gewaschen, Das letztere geschieht bisher ausschliesslich in der Weise, dass die fertiggekochte Masse in Gefässe mit Siebboden, in Rinnen oder dgl. gebracht und mit Wasser bnspü) t wird. Das Auswaschen wird so lange fortgesetzt, bis das Waschwasser nicht mehr merkbar lösliche Bestandteile aufnimmt. Die Mengen an Wasser, welche hiebei verwendet worden, sind bei beidenKochverfahrenausserordentlichgross.
Die Bedeutung der Abwasser ist aber bei den Kochverfahren verschieden. Beim Natronverfahren sucht man, bo weit es noch irgend lohnend ist, durch Eindampfen dos stärker gesättigten Teiles der Abwässer das Alkali wiederzugewinnen. Beim Sulfitverfahren ist bisher ein Eindampfen der im Abwasser fortgehenden Teile nur in beschränktem Umfange vorgenommen worden. Das wurde sich aber ändern, sobald die Abwasser in genügender Sättigung erhalten werden.
Zur Abstellung der Übetstände, die sich durch die grosse Menge der jetzt abfallenden Waschwasser in mehrfacher Beziehung ergeben, soll nach der Erfindung die Entfernung
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<Desc / Clms Page number 1>
Process for washing out the soda and sulphite process
Pulp.
Two processes are mainly used to produce pulp for paper production; the soda process and the sulphite ancestor 1. In both procedures
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Substances and the existing resins, etc. to dissolve. As soon as the cooking process is finished, the cooking liquor is drained and the remaining wood mass is washed with water. The latter has so far only been done in such a way that the finished cooked mass is placed in vessels with a sieve bottom, in channels or the like and rinsed with water. Washing is continued until the wash water no longer noticeably absorbs soluble components. The amounts of water which have been used in this process are extraordinarily large in both cooking methods.
The importance of the wastewater is different in the cooking process. In the soda process, one seeks if it is still worthwhile to recover the alkali by evaporating the more saturated part of the waste water. In the sulphite process, evaporation of the parts going on in the wastewater has so far only been carried out to a limited extent. But that would change as soon as the wastewater is sufficiently saturated.
To eliminate the excesses, which result from the large amount of washing water now falling in multiple relationships, the removal is intended according to the invention
EMI1.2
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT50987T | 1910-12-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT50987B true AT50987B (en) | 1911-11-25 |
Family
ID=3571895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT50987D AT50987B (en) | 1910-12-15 | 1910-12-15 | Process for washing out the pulp obtained by the soda and sulphite process. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT50987B (en) |
-
1910
- 1910-12-15 AT AT50987D patent/AT50987B/en active
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