AT73991B - Process for the separation of sulphonic acids produced from naphtha hydrocarbons and acidic naphtha waste. - Google Patents
Process for the separation of sulphonic acids produced from naphtha hydrocarbons and acidic naphtha waste.Info
- Publication number
- AT73991B AT73991B AT73991DA AT73991B AT 73991 B AT73991 B AT 73991B AT 73991D A AT73991D A AT 73991DA AT 73991 B AT73991 B AT 73991B
- Authority
- AT
- Austria
- Prior art keywords
- naphtha
- acidic
- hydrocarbons
- waste
- separation
- Prior art date
Links
- 230000002378 acidificating effect Effects 0.000 title claims description 11
- 229930195733 hydrocarbon Natural products 0.000 title claims description 8
- 150000002430 hydrocarbons Chemical class 0.000 title claims description 8
- 239000002699 waste material Substances 0.000 title claims description 5
- 238000000034 method Methods 0.000 title claims description 3
- 239000002253 acid Substances 0.000 title description 5
- 150000007513 acids Chemical class 0.000 title description 5
- 238000000926 separation method Methods 0.000 title description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 11
- 150000003460 sulfonic acids Chemical class 0.000 claims description 10
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 150000008064 anhydrides Chemical class 0.000 claims 1
- 230000029087 digestion Effects 0.000 claims 1
- 239000002480 mineral oil Substances 0.000 claims 1
- 230000007935 neutral effect Effects 0.000 claims 1
- 239000003960 organic solvent Substances 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 2
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Inorganic materials O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 2
- HIFJUMGIHIZEPX-UHFFFAOYSA-N sulfuric acid;sulfur trioxide Chemical compound O=S(=O)=O.OS(O)(=O)=O HIFJUMGIHIZEPX-UHFFFAOYSA-N 0.000 description 2
- 230000005484 gravity Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- FWFGVMYFCODZRD-UHFFFAOYSA-N oxidanium;hydrogen sulfate Chemical compound O.OS(O)(=O)=O FWFGVMYFCODZRD-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000003799 water insoluble solvent Substances 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Abscheidung von aus Naphtakohlenwasserstoffen und sauren Naphta- abfällen hergestellten Sulfosäuren.
EMI1.1
Bei der Bearbeitung der Naphtakohlenwasserstoffe mit konzentrierter Schwefelsäure oder Schwefelsäureanhydrid bzw. mit einer Mischung aus beiden bilden sich bedeutende Mengen organischer Sulfosäuren. Diese Säuren gehen teils in die saure Gudronschicht (saure Abfälle) über, teils bleiben sie in den unangegriffenen Kohlenwasserstoffen gelöst zurück.
In der Technik werden bei Raffinierung der Naphtafraktionen nach Bearbeitung derselben mit Schwefelsäure und Entfernen der sauren Gudronschicht, die Säuren aus den Destillaten gewöhnlich mit wässriger Natronlauge ausgewaschen. Die Abwässer werden entweder unbenutzt abgelassen oder man regeneriert aus denselben Natriumhydroxyd oder man verdampft sie in einzelnen Fällen und verwendet sie als Seifensurrogate.
Gemäss vorliegender Erfindung werden nun die Naphtakohlenwasserstoffe nach der Bearbeitung mit konzentrierter oder rauchender Schwefelsäure und Entfernen der sauren Gudronschicht, mit Wein-bzw. Holzgeist oder Aceton in reinem Zustande oder in Wasserlösung gewaschen. Die Sulfosäuren gehen dabei in die Lösungsmittel über und auf solche Weise können sie aus den sulfurierten Naphtadestillaten ausgeschieden und in reinem Zustande erhalten werden. Die in das saure Gudron übergangenen Sulfosäuren werden durch Naphtakohlenwasserstoffo, Benzol, Benzin oder andere organische, wasserunlösliche Lösungsmittel ausgeschieden und aus letzteren wieder durch Alkohol oder Aceton abgeschieden.
Beispiel : 10. 000 kg der Fraktion des Bakuer Erdöls vom spezifischen Gewicht 0-880 werden nach Bearbeitung mit einer kleinen Menge Schwefelsäure (Monohydrat) und Trennen der sauren Schicht nochmals mit 25"/rauchender Schwefelsäure behandelt, worauf der Gudron ausgeschieden und das Destillat mit 400 kg wässrigen Alkohols (l Teil Alkohol, 2 Teile Wasser) gemischt wird. Nach einigem Stehen scheidet sich ungefähr 800 kg einer dicken, durchsichtigen Losung aus, welche ungefähr 400 leg organischer Sulfosäuren enthält.
Diese Lösung kann zwecks Bereicherung an Sulfosäuren zum Waschen einer neuen Menge Destillates verwendet werden. Ein Teil der gebildeten Sulfosäuren bleibt im sauren Gudron, aus welchem durch Wasser die freigebliebene Schwefelsäure abgetrennt wird. Der Rückstand wird mit dem Naphtadestillat wieder vermischt, wobei die Sulfosäuren in das Destillat übergehen, aus welchem sie, wie oben beschrieben, durch Alkohol extrahiert werden.
Die Ausbeute an Sulfosäuren hängt von der Qualität des Destillates, von der Menge und Qualität der Schwefelsäure und von den Arbeitsbedingungen ab. Je mehr Schwefelsäure gebraucht wird und je reicher sie an Schwefelsäureanhydrid ist, um so mehr Sulfosäuren werden gebildet.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the separation of sulphonic acids produced from naphtha hydrocarbons and acidic naphtha waste.
EMI1.1
When processing naphtha hydrocarbons with concentrated sulfuric acid or sulfuric anhydride or with a mixture of both, significant amounts of organic sulfonic acids are formed. Some of these acids are transferred to the acidic gudron layer (acidic waste), while others remain dissolved in the unaffected hydrocarbons.
In technology, when the naphtha fractions are refined, after they have been processed with sulfuric acid and the acidic gudron layer removed, the acids are usually washed out of the distillates with aqueous sodium hydroxide solution. The wastewater is either drained off unused or it is regenerated from the sodium hydroxide or in individual cases it is evaporated and used as a soap surrogate.
According to the present invention, the naphtha hydrocarbons are now processed with concentrated or fuming sulfuric acid and removal of the acidic gudron layer, with wine or. Wood spirit or acetone washed in pure state or in water solution. The sulfonic acids pass into the solvent and in this way they can be separated from the sulfurized naphtha distillates and obtained in a pure state. The sulphonic acids converted into the acidic gudron are eliminated by naphtha hydrocarbons, benzene, gasoline or other organic, water-insoluble solvents and separated from the latter again by alcohol or acetone.
Example: 10,000 kg of the Baku petroleum fraction with a specific gravity of 0-880 are treated again with 25 "/ fuming sulfuric acid after processing with a small amount of sulfuric acid (monohydrate) and separating the acidic layer, whereupon the gudron is separated out and the distillate with 400 kg of aqueous alcohol (1 part of alcohol, 2 parts of water) is mixed in. After standing for a while, about 800 kg of a thick, transparent solution separates out, which contains about 400 parts of organic sulfonic acids.
This solution can be used for the purpose of enriching sulfonic acids for washing a new amount of distillate. Some of the sulfonic acids formed remain in the acidic gudron, from which the sulfuric acid that has remained free is separated off with water. The residue is mixed again with the naphtha distillate, the sulfonic acids passing into the distillate from which they are extracted by alcohol as described above.
The yield of sulfonic acids depends on the quality of the distillate, the quantity and quality of the sulfuric acid and the working conditions. The more sulfuric acid is used and the richer it is in sulfuric anhydride, the more sulfonic acids are formed.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT73991T | 1912-04-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT73991B true AT73991B (en) | 1917-11-10 |
Family
ID=3595659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT73991D AT73991B (en) | 1912-04-03 | 1912-04-03 | Process for the separation of sulphonic acids produced from naphtha hydrocarbons and acidic naphtha waste. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT73991B (en) |
-
1912
- 1912-04-03 AT AT73991D patent/AT73991B/en active
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