AT67451B - Process for the recovery of both the organic and inorganic components of the waste liquors from sulphite cellulose plants. - Google Patents
Process for the recovery of both the organic and inorganic components of the waste liquors from sulphite cellulose plants.Info
- Publication number
- AT67451B AT67451B AT67451DA AT67451B AT 67451 B AT67451 B AT 67451B AT 67451D A AT67451D A AT 67451DA AT 67451 B AT67451 B AT 67451B
- Authority
- AT
- Austria
- Prior art keywords
- organic
- recovery
- inorganic components
- waste liquors
- sulphite cellulose
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 5
- 239000002699 waste material Substances 0.000 title description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 title description 3
- 229920002678 cellulose Polymers 0.000 title description 2
- 239000001913 cellulose Substances 0.000 title description 2
- 238000011084 recovery Methods 0.000 title description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 150000008043 acidic salts Chemical class 0.000 claims 1
- WBHQBSYUUJJSRZ-UHFFFAOYSA-M sodium bisulfate Chemical compound [Na+].OS([O-])(=O)=O WBHQBSYUUJJSRZ-UHFFFAOYSA-M 0.000 claims 1
- 229910000342 sodium bisulfate Inorganic materials 0.000 claims 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
Description
<Desc/Clms Page number 1>
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ruhig stehen gelassen, so ist für die Zersetzung nicht mehr die Anwendung so hohen Druckes und so hoher Temperatur erforderlich als oben angegeben worden ist, sondern die Ausscheidung findet schon bei niedrigem Druck und niedriger Temperatur statt. Man kann die Oxydation soweit
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der Herstellungsweise.
Bei der Behandlung der Sulfit, lauge nach dem obigen Verfahren können von den in der Lauge enthaltenen organischen und anorganischen Produkten zwischen 80 und 90% gewonnen werden. Die dann verbleibende Flüssigkeit ist vollständig harmlos und kann in jeden Fluss abgelassen werden, ohne Schaden anzurichten.
PATENTT-ANSPRÜCHE :
1. Verfahren zur Gewinnung sowohl der organischen als auch der anorganischen Bestandteile der Ablauge von Sulfitzellulose-Fabriken, dadurch gekennzeichnet. dass die m der Ablauge befindliche schweflige Säure durch Kochen der Ablauge in einem Autoklaven bei hoher Temperatur und einem den Atmosphärendruck übersteigenden Druck bei Gegenwart von Sauerstoff oder mit Sauerstoff angereicherter Luft oxydiert wird, wobei die gebildete Schwefelsäure spontan auf die in der Lauge befindlichen zusammengesetzten Substanzen unter Ausfällung der Lignai- substanz einwirkt.
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If left to stand still, the decomposition no longer requires the use of such high pressure and such high temperature as has been indicated above, but precipitation takes place even at low pressure and low temperature. You can do the oxidation so far
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the manufacturing method.
When treating the sulphite lye according to the above process, between 80 and 90% of the organic and inorganic products contained in the lye can be recovered. The remaining liquid is completely harmless and can be drained into any river without causing damage.
PATENT CLAIMS:
1. A process for the recovery of both the organic and the inorganic components of the waste liquor from sulphite cellulose factories, characterized. that the sulphurous acid present in the waste liquor is oxidized by boiling the waste liquor in an autoclave at high temperature and a pressure exceeding atmospheric pressure in the presence of oxygen or oxygen-enriched air, the sulfuric acid formed spontaneously affecting the compound substances in the liquor Precipitation of the lignic substance acts.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE67451X | 1911-09-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT67451B true AT67451B (en) | 1915-01-11 |
Family
ID=20269500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT67451D AT67451B (en) | 1911-09-09 | 1912-08-08 | Process for the recovery of both the organic and inorganic components of the waste liquors from sulphite cellulose plants. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT67451B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2434626A (en) * | 1945-01-22 | 1948-01-13 | Salvo Chemical Corp | Process for making vanillin |
-
1912
- 1912-08-08 AT AT67451D patent/AT67451B/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2434626A (en) * | 1945-01-22 | 1948-01-13 | Salvo Chemical Corp | Process for making vanillin |
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