DE341887C - - Google Patents
Info
- Publication number
- DE341887C DE341887C DENDAT341887D DE341887DA DE341887C DE 341887 C DE341887 C DE 341887C DE NDAT341887 D DENDAT341887 D DE NDAT341887D DE 341887D A DE341887D A DE 341887DA DE 341887 C DE341887 C DE 341887C
- Authority
- DE
- Germany
- Prior art keywords
- recovery
- nitrating acid
- nitrating
- acid
- solid
- 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.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
- C01B21/086—Compounds containing nitrogen and non-metals and optionally metals containing one or more sulfur atoms
-
- 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
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/90—Separation; Purification
- C01B17/94—Recovery from nitration acids
Description
Verfahren zur Wiedergewinnung der Nitriersäure bei der Herstellung von Salpetersäureestern oder Nitroverbindungen. In dem Patent 300758 findet die Wiedergewinnung der Nitriersäure bei der Herstellung von Schießbaumwolle in der Weise statt, daß man behufs Beseitigung der der Schießbaumwolle anhaftenden Nitriersäure in die zum Ausschleudern der Nitriersäure benutzte Zentrifugentrommel Schwefelsäure von einer solchen Konzentration einspritzt, daß ihr Wassergehalt etwa dem der Nitriersäure gleicht, um dadurch das Auftreten von Wärmetönungen beim Verdrängen der Nitriersäure zu vermeiden. Das Patent beschreibt nur die Wiedergewinnung der Nitriersäure in Verbindung mit Schießbaumwolle und ähnlichen Stoffen. Weitere Versuche haben ergeben, daß das analoge Verfahren auch für die Wiedergewinnung der Nitriersäure bei der Herstellung sämtlicher anderen festen Salpetersäureester von Zellulose und Zuckerarten sowie sämtlicher festen Nitroverbindungen von Benzol, Toluol, Xylol, Naphthalin, Anthracen, Phenolen und deren Abkömmlingen, beispielsweise o-, m-, p-Nitrophenol, o-, m-, p-Dinitrobenzöl, Tetranitromethylanilin, Nitroxylol, p-Nitrotoluol, Dinitronaphthalin usw., anwendbar ist, und die vorliegende Erfindung bezweckt, das Verfahren des Patentes 300758 auf die Wiedergewinnung der Nitriersäure bei der Herstellung der oben aufgeführten Verbindungen auszudehnen.Process for the recovery of nitrating acid in the production of nitric acid esters or nitro compounds. In patent 300758, the recovery of the nitrating acid in the manufacture of gun cotton takes place in such a way that, in order to remove the nitrating acid adhering to the gun cotton, sulfuric acid is injected into the centrifuge drum used for centrifuging the nitrating acid in such a concentration that its water content is about that of the nitrating acid in order to avoid the occurrence of heat tones when displacing the nitrating acid. The patent only describes the recovery of nitrating acid in connection with gun cotton and similar materials. Further experiments have shown that the analogous process can also be used for the recovery of nitrating acid in the production of all other solid nitric acid esters of cellulose and sugars as well as all solid nitro compounds of benzene, toluene, xylene, naphthalene, anthracene, phenols and their derivatives, for example o-, m-, p-nitrophenol, o-, m-, p-dinitrobenzol, tetranitromethylaniline, nitroxylene, p-nitrotoluene, dinitronaphthalene, etc., is applicable and the present invention aims to apply the process of patent 300758 to the recovery of the nitrating acid in the Making the compounds listed above to expand.
Die Einzelheiten des Verfahrens ergeben sich von selbst und sind in dem Hauptpatent ausgeführt; auch können diese Einzelheiten bei der Wiedergewinnung der Nitriersäure in Verbindung mit der allgemeinen Herstellung von Salpetersäureestern und Nitroverbindungen eine sinngemäße Abänderung im Rahmen des ursprünglichen Erfindungsgedankens finden.The details of the procedure are self-explanatory and are in executed the main patent; also can these details in the recovery of nitrating acid in connection with the general production of nitric acid esters and nitro compounds a corresponding modification within the scope of the original inventive concept Find.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE300758T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE341887C true DE341887C (en) |
Family
ID=6095825
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT341887D Active DE341887C (en) | |||
| DENDAT300758D Active DE300758C (en) |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT300758D Active DE300758C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (2) | DE300758C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5924194A (en) * | 1996-07-09 | 1999-07-20 | Alcatel | Method of producing an overhead contact wire for supplying power to electrically driven vehicles |
-
0
- DE DENDAT341887D patent/DE341887C/de active Active
- DE DENDAT300758D patent/DE300758C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5924194A (en) * | 1996-07-09 | 1999-07-20 | Alcatel | Method of producing an overhead contact wire for supplying power to electrically driven vehicles |
Also Published As
| Publication number | Publication date |
|---|---|
| DE300758C (en) |
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