DE17876C - Innovations in the process for the production of dinitrobenzene from luminous gas - Google Patents
Innovations in the process for the production of dinitrobenzene from luminous gasInfo
- Publication number
- DE17876C DE17876C DENDAT17876D DE17876DA DE17876C DE 17876 C DE17876 C DE 17876C DE NDAT17876 D DENDAT17876 D DE NDAT17876D DE 17876D A DE17876D A DE 17876DA DE 17876 C DE17876 C DE 17876C
- Authority
- DE
- Germany
- Prior art keywords
- dinitrobenzene
- gas
- production
- innovations
- nitrobenzene
- 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
- WDCYWAQPCXBPJA-UHFFFAOYSA-N 1,3-dinitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC([N+]([O-])=O)=C1 WDCYWAQPCXBPJA-UHFFFAOYSA-N 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 238000000034 method Methods 0.000 title description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 20
- LQNUZADURLCDLV-UHFFFAOYSA-N Nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 claims description 18
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- GRYLNZFGIOXLOG-UHFFFAOYSA-N nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
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
- C07C201/08—Preparation of nitro compounds by substitution of hydrogen atoms by nitro groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Zur Darstellung von Dinitrobenzol:For the representation of dinitrobenzene:
1. aus Gasgemengen, welche man durch das Verfahren des vollständigen Destillirens \yon |Cohle und anderen kohlehaltigen Substanzen erhält und welche Benzol enthalten;1. From gas mixtures which can be obtained by the process of complete distillation | Contains coal and other carbonaceous substances and which contain benzene;
2. aus diesen Gasgemengen, nachdem das Benzol in denselben auf unten beschriebene Weise bereits in Nitrobenzol übergeführt ist, werden dieselben mit Salpetersäure und Schwefelsäure behandelt.2. from these gas mixtures after the benzene in the same as described below Way is already converted into nitrobenzene, the same are done with nitric acid and sulfuric acid treated.
Kohlen oder kohlenhaltige Substanzen, welche ein Gas mit hohem Benzolgehalt erzeugen, werden destillirt. Die theerhaltigen Destillationsproducte und andere Unreinigkeiten werden aus dem Gase auf bekannte Weise niedergeschlagen.Coals or carbonaceous substances that produce a gas with a high benzene content will be distilled. The products of the distillation and other impurities are removed the gas is precipitated in a known manner.
Das so gereinigte Gas lasse ich nun durch kalte oder erwärmte Schwefelsäure streichen, um die noch anhaftenden Unreinigkeiten auszuscheiden, weil diese bis zu einem gewissen Grade auf den ökonomischen Betrieb des Verfahrens zum Gewinnen von Nitrobenzql und Dinitrobenzol hindernd einwirken könnten.I now let the gas cleaned in this way pass through cold or heated sulfuric acid, to excrete the still adhering impurities, because these up to a certain extent Grade on the economic operation of the process for obtaining Nitrobenzql and Dinitrobenzene could have an adverse effect.
Um Dinitrobenzol aus den Gasgemengen zu erhalten, welche nicht vorher zum Gewinnen von Nitrobenzol behandelt sind, verfahre ich wie folgt:To obtain dinitrobenzene from the gas mixtures which were not previously used to extract are treated by nitrobenzene, I proceed as follows:
Nachdem das Gas gereinigt worden ist, leite ich dasselbe in geeignete Gefäfse hinein. In einem oder mehreren dieser Gefäfse befindet sich eine Mischung von Salpetersäure und Schwefelsäure mit einem Ueberschufs an Schwefelsäure. Die Mischung besteht aus ca. 1 Theil Salpetersäure und 5 Theilen Schwefelsäure. Durch diese Mischung wird das in dem Gas vorhandene Benzol in Dinitrobenzol verwandelt, welches in dem angewendeten Gefäfs bezw. den Gefäfsen zurückbleibt.After the gas has been purified, I pour it into suitable vessels. In one or more of these vessels contains a mixture of nitric acid and Sulfuric acid with an excess of sulfuric acid. The mixture consists of about 1 part Nitric acid and 5 parts sulfuric acid. This mix creates that in the gas existing benzene is converted into dinitrobenzene, which bezw in the used vessel. the Vessels left behind.
Die Herstellung von Nitrobenzol aus benzolhaltigem Gas mittelst Salpetersäure oder Salpetersäure-Mischung wurde so theuer befunden, dafs dasselbe nicht zum Erzeugen von Nitrobenzol für den Handel angewendet werden konnte, weil eine Quantität des gebildeten Nitrobenzols mit dem Gase in Dampfform entwich.The production of nitrobenzene from gas containing benzene by means of nitric acid or a nitric acid mixture was found so dear that it could not be used to produce commercial nitrobenzene because a quantity of the nitrobenzene formed escaped with the gas in vapor form.
Diese Nachtheile werden dadurch vollständig beseitigt, dafs das so hinweggeführte Nitrobenzol in Form von Dinitrobenzol gewonnen wird. Um diesen Zweck zu erreichen, leite ich das Gas, welches aus den Gefäfsen, die zum Gewinnen von Nitrobenzol angewendet werden, entweicht, durch ein Gefäfs bezw. Gefäfse, welche das erwähnte Säuregemisch, d. h. Salpetersäure und Schwefelsäure enthalten. Hierdurch wird das in dem Gase enthaltene Nitrobenzol in Dinitrobenzol verwandelt und bleibt in den angewendeten Gefäfsen zurück. Die Säureverhältnisse sind je nach der angewendeten Gassorte etwas abzuändern. Statt Salpetersäure kann man Mischuungen von salpetersauren Salzen mit Schwefelsäure anwenden.These disadvantages are completely eliminated by the fact that the nitrobenzene thus carried away is obtained in the form of dinitrobenzene. To accomplish this purpose, I run the gas which escapes from the vessels used to extract nitrobenzene, through a vessel respectively. Vessels containing the aforementioned acid mixture, d. H. Nitric acid and Contain sulfuric acid. This turns the nitrobenzene contained in the gas into dinitrobenzene transforms and remains in the applied vessels. The acidity should be changed slightly depending on the type of gas used. Instead of nitric acid you can Use mixtures of nitric acid salts with sulfuric acid.
Claims (2)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE17876C true DE17876C (en) |
Family
ID=34715779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT17876D Active DE17876C (en) | Innovations in the process for the production of dinitrobenzene from luminous gas |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE17876C (en) |
-
0
- DE DENDAT17876D patent/DE17876C/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE17876C (en) | Innovations in the process for the production of dinitrobenzene from luminous gas | |
| DE1545365A1 (en) | Process for the separation of aromatic hydrocarbons from mixtures of aromatic and non-aromatic hydrocarbons | |
| DE384846C (en) | Process for the production of purified crude benzene by freezing out | |
| DE403215C (en) | Process for the direct production of oil-free paraffin | |
| DE219771C (en) | ||
| DE493673C (en) | Method for processing tar u. like | |
| AT85534B (en) | Process for briquetting coal and other powdery bodies. | |
| AT17451B (en) | Process for the preparation of acetone. | |
| DE579033C (en) | Process for the production of a solution of coal in mineral oils or tars | |
| DE2546072B2 (en) | Process for removing soot from aqueous suspensions | |
| DE219310C (en) | ||
| AT103791B (en) | Process for splitting heavy hydrocarbons. | |
| DE489346C (en) | Process for improving hydrogenation products of coals, tars, mineral oils and the like like | |
| DE538646C (en) | Process for the separation of unsaponifiable constituents from oxidation products of hydrocarbons | |
| DE38470C (en) | Innovation in the refining of vegetable oils with sulfuric acid | |
| DE877593C (en) | Binder for the briquetting of hard coal | |
| DE617710C (en) | Process for the thermal splitting of hydrocarbon oils | |
| DE28982C (en) | Method of mooring petroleum and other oils | |
| DE271193C (en) | ||
| DE735662C (en) | Process for removing sulfur compounds from gases | |
| DE697518C (en) | solid, non-meltable carbonaceous substances | |
| DE332057C (en) | Method for producing a mixed gas | |
| DE418128C (en) | Process for the production of briquettes from fine coal or small anthracite | |
| DE638649C (en) | Process for the extraction of sulfur | |
| DE175384C (en) |