DE350155C - Process for the production of sulphurous acid gases from sulphite pulp waste liquors - Google Patents
Process for the production of sulphurous acid gases from sulphite pulp waste liquorsInfo
- Publication number
- DE350155C DE350155C DE1921350155D DE350155DD DE350155C DE 350155 C DE350155 C DE 350155C DE 1921350155 D DE1921350155 D DE 1921350155D DE 350155D D DE350155D D DE 350155DD DE 350155 C DE350155 C DE 350155C
- Authority
- DE
- Germany
- Prior art keywords
- production
- sulphurous acid
- acid gases
- pulp waste
- waste liquors
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/48—Sulfur dioxide; Sulfurous acid
- C01B17/50—Preparation of sulfur dioxide
- C01B17/501—Preparation of sulfur dioxide by reduction of sulfur compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Description
Verfahren zur Gewinnung von schwefligsauren Gasen aus Sulfitzellstoffablaugen. Erhitzt- man künstliche oder natürliche Sulfate, wie Kainit, Kieserit usw., mit flüssiger oder getrockneter Sulfitlauge, so entweichen Gase, die reich sind an Schwefeldioxyd. Diese können gereinigt und nach bekannten Methoden auf Schwefelsäure verarbeitet oder aber in Wasser aufgefangen werden, mit welchem sie sich zu schwefliger Säure umsetzen. Auf die Überführung von wäßriger schwefliger Säure in Schwefelsäure durch Einleiten von Chlor sei hingewiesen. Die sonstigen Verwendungsmöglichkeiten für das so gewonnene Schwefeldioxyd sind, wie bekannt, verschiedene. Insbesondere kann man die wie oben beschrieben dargestellte wäßrige schweflige Säure zur Lösung des Phosphorgehaltes von Phosphoriten, Knochen oder phosphorhaltigen Schlacken benutzen. Sie kann auch für die Zitrat- bzw. Zitronensäurelöslichmachung der phosphorhaltigen Stoffe Anwendung finden, ebenso wie die sich aus einem Sulfitlauge-Sulfat-Gemisch entwickelnden Gase an und für sich schon eine aufschließende, d. h. Zitronensäure löslich machende Wirkung auf Phosphorite ausüben, zu welchem Zweck man aber besser die drei Komponenten, also Sulfate, Phosphorite und Sulfitlauge mischen und erhitzen wird. PATENTANSPRUCH: Verfahren zur Gewinnung von schwefligsauren Gasen aus Sulfitzellstoffablauge, dadurch gekennzeichnet, daß man Sulfate, wie Kainit, Kieserit usw., mit der flüssigen oder getrockneten Sulfitablauge erhitzt. Process for the production of sulphurous acid gases from sulphite pulp waste liquors. If artificial or natural sulphates, such as kainite, kieserite, etc., are heated with liquid or dried sulphite liquor, gases which are rich in sulfur dioxide escape. These can be cleaned and processed using known methods on sulfuric acid or they can be collected in water, with which they are converted to sulfuric acid. Reference should be made to the conversion of aqueous sulphurous acid into sulfuric acid by introducing chlorine. The other possible uses for the sulfur dioxide obtained in this way are, as is known, various. In particular, the aqueous sulphurous acid prepared as described above can be used to dissolve the phosphorus content of phosphorites, bones or phosphorus-containing slags. It can also be used to solubilize phosphorus-containing substances in the citrate or citric acid, as well as the gases developing from a sulphite-lye-sulphate mixture in and of themselves exert a disintegrating, ie citric acid-solubilizing effect on phosphorites, for what purpose but it is better to mix and heat the three components, i.e. sulphates, phosphorites and sulphite liquor. PATENT CLAIM: Process for the production of sulphurous acid gases from sulphite pulp waste liquor, characterized in that sulphates, such as kainite, kieserite, etc., are heated with the liquid or dried sulphite waste liquor.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE350155T | 1921-01-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE350155C true DE350155C (en) | 1922-03-13 |
Family
ID=6260150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1921350155D Expired DE350155C (en) | 1921-01-23 | 1921-01-23 | Process for the production of sulphurous acid gases from sulphite pulp waste liquors |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE350155C (en) |
-
1921
- 1921-01-23 DE DE1921350155D patent/DE350155C/en not_active Expired
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