DE410470C - Process for the extraction of the nitration product of ethylene from waste acid - Google Patents

Process for the extraction of the nitration product of ethylene from waste acid

Info

Publication number
DE410470C
DE410470C DEC30211D DEC0030211D DE410470C DE 410470 C DE410470 C DE 410470C DE C30211 D DEC30211 D DE C30211D DE C0030211 D DEC0030211 D DE C0030211D DE 410470 C DE410470 C DE 410470C
Authority
DE
Germany
Prior art keywords
ethylene
extraction
waste acid
nitration product
acid
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
DEC30211D
Other languages
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
Priority to DEC30211D priority Critical patent/DE410470C/en
Application granted granted Critical
Publication of DE410470C publication Critical patent/DE410470C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
    • C07C201/06—Preparation of nitro compounds
    • C07C201/16—Separation; Purification; Stabilisation; Use of additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D11/00—Solvent extraction
    • B01D11/04—Solvent extraction of solutions which are liquid
    • B01D11/0492—Applications, solvents used

Description

Verfahren zur Extraktion des Nitrierungsproduktes des Äthylens aus Abfallsäure. In dem deutschen Patent 301797 ist ein `"erfahren zur Extraktion von Nitrokörpern aus Abfallsäuren mittels gechlorter Isohlenwasserstoffe beschrieben. Als Beispiele werden in der Beschreibung, und zwar zur Extraktion von aromatischen Nitrokörpern, Trichloräthylen und Tetrachloräthan angegeben. Versucht man das Nitrierungsprodukt des Äthylens ,aus der Nitriersäure mit diesen Mitteln, aber auch mittels Pentachloräthans (vgl. die Patentschrift 2q-3721) zu extrahieren, so erwärmt sich die Säure schnell sehr stark, wobei erhebliche Chlorentwicklung eintritt. Diese Extraktionsmittel sind deshalb zur Extraktion der Äthylennitriersäure unbrauchbar. Der Grund liegt in der Zusammensetzung der bei der Äthylennitrierung :erhaltenen Abfallsäure. Diese enthält entsprechend dem eigenartigen Verlauf der Äthylennitrierung wesentlich mehr Salpetersäure und vor allem viel mehr salpetrige Säure als die gewöhnliche Abfallnitriersäure. Die Aufgabe, für das nitrierte Äthylen ein geeignetes Extraktionsmittel zu finden, ist aber besonders wichtig, weil die Löslichkeit des Athy lennitrierungsproduktes in Mischsäure eiheblich ist. Im Gegensatz zu den erwähnten Chlorverbindungen des Äthylens und Äthans wurde nun im Äthylenchlorid ein geeignetes Extraktionsmittel gefunden. Dieses löst nicht nur das Sprengöl leicht auf, sondern ist auch gegenüber der bei der Äthylennitrierung anfallenden Endsäure beständig, anscheinend deshalb, weil es im Gegensatz zum Trichloräthylen keine Doppelverbindung und im Verhältnis zum Tetracbloräthan und Pentachloräthan einen geringeren Chlorgehalt besitzt.Process for the extraction of the nitration product of ethylene from Waste acid. In the German patent 301797 a `` "is experienced in the extraction of Described nitro bodies from waste acids by means of chlorinated isohydrocarbons. As examples are in the description, specifically for the extraction of aromatic Nitro bodies, trichlorethylene and tetrachloroethane specified. Try the nitration product of ethylene, from nitrating acid with these agents, but also by means of pentachloroethane (cf. Patent 2q-3721) to extract, the acid heats up quickly very strong, with considerable evolution of chlorine. These extractants are therefore useless for the extraction of the ethylene nitrating acid. The reason lies in the composition of the waste acid obtained in the ethylene nitration: These contains considerably more in accordance with the peculiar course of ethylene nitration Nitric acid and, above all, much more nitrous acid than the common waste nitrating acid. The task of finding a suitable extractant for the nitrated ethylene, but is particularly important because of the solubility of the ethylene nitration product is significant in mixed acid. In contrast to the chlorine compounds mentioned above Ethylene and ethane now became a suitable extractant in ethylene chloride found. This not only dissolves the explosive oil easily, but is also opposite resistant to the final acid resulting from ethylene nitration, apparently therefore, because in contrast to trichlorethylene there is no double compound and in proportion has a lower chlorine content than tetraclorethylene and pentachloroethane.

Dazu kommt als weiterer Vorteil, daß man Äthylenchlorid aus den Abgasen der Nitri&-rung, also in ,enger Verbindung mit dieser selbst, herstellen kann.Another advantage is that you can get ethylene chloride from the exhaust gases which can produce nitration, i.e. in close connection with this itself.

Claims (1)

PATENT-ANSPRUi.H: Verfahren zur Extraktion des Nitrie.-rungsproduktes des Äthylens aus der bei seiner Herstellung entstehenden Abfallsäure, dadurch gekennzeichnet, daß man als Extraktionsmittel Äthylenchlorid verwendet.PATENT-ANSPRUi.H: Process for the extraction of the nitration product of ethylene from the waste acid resulting from its manufacture, characterized in that, that ethylene chloride is used as the extractant.
DEC30211D 1921-02-15 1921-02-15 Process for the extraction of the nitration product of ethylene from waste acid Expired DE410470C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC30211D DE410470C (en) 1921-02-15 1921-02-15 Process for the extraction of the nitration product of ethylene from waste acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC30211D DE410470C (en) 1921-02-15 1921-02-15 Process for the extraction of the nitration product of ethylene from waste acid

Publications (1)

Publication Number Publication Date
DE410470C true DE410470C (en) 1925-03-10

Family

ID=7019244

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC30211D Expired DE410470C (en) 1921-02-15 1921-02-15 Process for the extraction of the nitration product of ethylene from waste acid

Country Status (1)

Country Link
DE (1) DE410470C (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2499648A (en) * 1947-04-26 1950-03-07 Canadian Ind Dinitrohexachlorobutanes
US5558855A (en) * 1993-01-25 1996-09-24 Sonus Pharmaceuticals Phase shift colloids as ultrasound contrast agents
US5558853A (en) * 1993-01-25 1996-09-24 Sonus Pharmaceuticals Phase shift colloids as ultrasound contrast agents
US5573751A (en) * 1991-09-17 1996-11-12 Sonus Pharmaceuticals, Inc. Persistent gaseous bubbles as ultrasound contrast media
US5837221A (en) 1996-07-29 1998-11-17 Acusphere, Inc. Polymer-lipid microencapsulated gases for use as imaging agents
US6245319B1 (en) 1993-01-25 2001-06-12 Sonus Pharmaceuticals, Inc. Colloidal dispersions of perfluoropentane
US6620404B1 (en) 1991-09-17 2003-09-16 Amersham Health A/S Gaseous ultrasound contrast media and method for selecting gases for use as ultrasound contrast media

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2499648A (en) * 1947-04-26 1950-03-07 Canadian Ind Dinitrohexachlorobutanes
US5573751A (en) * 1991-09-17 1996-11-12 Sonus Pharmaceuticals, Inc. Persistent gaseous bubbles as ultrasound contrast media
US6620404B1 (en) 1991-09-17 2003-09-16 Amersham Health A/S Gaseous ultrasound contrast media and method for selecting gases for use as ultrasound contrast media
US5558855A (en) * 1993-01-25 1996-09-24 Sonus Pharmaceuticals Phase shift colloids as ultrasound contrast agents
US5558853A (en) * 1993-01-25 1996-09-24 Sonus Pharmaceuticals Phase shift colloids as ultrasound contrast agents
US5595723A (en) * 1993-01-25 1997-01-21 Sonus Pharmaceuticals Method for preparing storage stable colloids
US6245319B1 (en) 1993-01-25 2001-06-12 Sonus Pharmaceuticals, Inc. Colloidal dispersions of perfluoropentane
US5837221A (en) 1996-07-29 1998-11-17 Acusphere, Inc. Polymer-lipid microencapsulated gases for use as imaging agents

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