DE349349C - Process for the elimination of the nitration products of the unsaturated, gaseous hydrocarbons dissolved in the nitrating acid - Google Patents

Process for the elimination of the nitration products of the unsaturated, gaseous hydrocarbons dissolved in the nitrating acid

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Publication number
DE349349C
DE349349C DE1919349349D DE349349DD DE349349C DE 349349 C DE349349 C DE 349349C DE 1919349349 D DE1919349349 D DE 1919349349D DE 349349D D DE349349D D DE 349349DD DE 349349 C DE349349 C DE 349349C
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DE
Germany
Prior art keywords
unsaturated
elimination
gaseous hydrocarbons
nitrating acid
nitration
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
Application number
DE1919349349D
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German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chemische Fabrik Kalk GmbH
Original Assignee
Chemische Fabrik Kalk GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chemische Fabrik Kalk GmbH filed Critical Chemische Fabrik Kalk GmbH
Application granted granted Critical
Publication of DE349349C publication Critical patent/DE349349C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00Sulfur; Compounds thereof
    • C01B17/69Sulfur trioxide; Sulfuric acid
    • C01B17/90Separation; Purification
    • C01B17/94Recovery from nitration acids

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Ausscheidung der in der Nitriersäure gelösten Nitrierungsprodukte der ungesättigten, gasförmigen Kohlenwasserstoffe. Leitet man ungesättigte, gasförmige Kohlenwasserstoffe, wie z. B. Äthylen, durch Salpeter-Schavefelsäure, so scheiden sich nach einiger Zeit oberhalb der Nitriersäure gelbliche, ölige Flüssigkeiten ab, welche aus den Nitrierungsprodukten der gasförmigen Olefine bestehen. Ein erheblicher Teil der entstandenen Reaktionsprodukte bleibt aber in der Nitriersäure gelöst. Das gelöste Reaktionsprodukt scheidet sich bei längerem Stehenlassen nur zu einem geringen Teil aus; auch eine Verdünnung mit Wasser scheidet das Öl nicht genügend vollständig ab.Process for eliminating the nitration products dissolved in the nitrating acid of unsaturated, gaseous hydrocarbons. One conducts unsaturated, gaseous Hydrocarbons such as B. Ethylene, separated by nitric schavefelsäure, so After a while, yellowish, oily liquids appear above the nitrating acid which consist of the nitration products of the gaseous olefins. A significant one However, part of the reaction products formed remains dissolved in the nitrating acid. The dissolved reaction product separates into only one when left to stand for a long time small part off; even a dilution with water does not sufficiently separate the oil completely off.

Es wurde nun gefunden, daß man das gelöste Nitrierungsöl aus der Nitriersäure in kurzer Zeit fast vollständig ausscheiden kann, wenn man in der Mischsäure Ammoniumsulfat oder Ammoniuinnitrat und andere geeignete Ammoniumsalze auflöst. Nach dein Zusatz der Ammoniumsalze beobachtet man alsbald, daß sich oberhalb der Säure erhebliche Mengen des Nitrierungsöls ausscheiden.It has now been found that the dissolved nitrating oil can be extracted from the nitrating acid can be eliminated almost completely in a short time if ammonium sulfate is added to the mixed acid or dissolves ammonium nitrate and other suitable ammonium salts. According to your addition of the ammonium salts it is soon observed that there are considerable amounts above the acid Eliminate quantities of nitrating oil.

Beispielsweise wurden bei der Herstellung der Nitrierungsprodukte des Athylens nach Zusatz von Ammoniumsulfat die folgenden Verhältnisse gefunden: Nach beendigter Nitrierung scheiden sich unmittelbar aus der Mischsäure 64,8 Prozent des gesamten gebildeten Nitrierungsproduktes aus; durch Auflösen von Ammoniumsulfat in der Säure wurden nach kurzem Stehen weiter 2,7,7 Prozent ausgeschieden, so daß in der Lösung nur noch 7,5 Prozent des Nitrierungsproduktes zurückblieben.For example, in the manufacture of nitration products of ethylene after the addition of ammonium sulfate found the following proportions: When the nitration is complete, 64.8 percent are immediately separated from the mixed acid of the entire nitration product formed from; by dissolving ammonium sulfate 2.7.7 percent were excreted in the acid after standing for a short time, so that only 7.5 percent of the nitration product remained in the solution.

Bei Anwendung von sehr konzentrierter Mischsäure zur Nitrierung des Athylens scheidet sich unmittelbar wesentlich weniger Nitrierungsprodukt aus, und erst durch Auflösen von Ammoniumsulfat wird die Hauptmenge des gebildeten Nitrierungsöls abgeschieden. Untersuchungen ergaben, daß in diesem Falle sich z. B. unmittelbar nur 35,9 Prozent des gebildeten Nitrierungsprodtiktes ausschieden, -,vogegen nach auflösen des Ammoniumsulfats sich 57,8 Prozent ausschieden. Man kann natürlich auch so verfahren, daß man die Säure zunächst mit Wasser verdünnt und das gelöste Nitrierungsprodukt alsdann durch Auflösen von Ammoniumsulfat ausscheidet. Das Endergebnis wird natürlich auf diese Weise nicht geändert.When using very concentrated mixed acid to nitrate the Ethylenes immediately separates out significantly less nitration product, and Only when ammonium sulphate dissolves is the bulk of the nitrating oil formed deposited. Investigations showed that in this case z. B. immediately only 35.9 percent of the nitration product formed was eliminated, -, against Dissolving the ammonium sulfate, 57.8 percent were eliminated. Of course you can too proceed in such a way that the acid is first diluted with water and the dissolved nitration product then precipitates by dissolving ammonium sulfate. The end result will be natural not changed this way.

Claims (1)

PATENT-ANSpRUcH: Verfahren zur Ausscheidung der in der Nitriersäure gelösten NTitrierungsprodukte der ungesättigten, gasförmigen Kohlenwasserstoffe, dadurch gekennzeichnet, daß man in der Nitriersäure Ammoniurnsulfat, Ammoniumnitrat oder andere geeignete Ammoniumsalze auflöst.PATENT CLAIM: Process for the elimination of the nitrating acid dissolved Titration products of the unsaturated, gaseous hydrocarbons, characterized in that the nitrating acid contains ammonium sulfate, ammonium nitrate or dissolves other suitable ammonium salts.
DE1919349349D 1919-02-05 1919-02-05 Process for the elimination of the nitration products of the unsaturated, gaseous hydrocarbons dissolved in the nitrating acid Expired DE349349C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE349349T 1919-02-05

Publications (1)

Publication Number Publication Date
DE349349C true DE349349C (en) 1922-02-28

Family

ID=6258429

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1919349349D Expired DE349349C (en) 1919-02-05 1919-02-05 Process for the elimination of the nitration products of the unsaturated, gaseous hydrocarbons dissolved in the nitrating acid

Country Status (1)

Country Link
DE (1) DE349349C (en)

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