BE518008A - - Google Patents
Info
- Publication number
- BE518008A BE518008A BE518008DA BE518008A BE 518008 A BE518008 A BE 518008A BE 518008D A BE518008D A BE 518008DA BE 518008 A BE518008 A BE 518008A
- Authority
- BE
- Belgium
- Prior art keywords
- washing
- process according
- emulsion
- improvement
- separator
- Prior art date
Links
- 238000005406 washing Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 9
- 239000003995 emulsifying agent Substances 0.000 claims description 8
- 239000000839 emulsion Substances 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 3
- 238000000354 decomposition reaction Methods 0.000 claims description 2
- 230000001264 neutralization Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000005755 formation reaction Methods 0.000 claims 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- SPSSULHKWOKEEL-UHFFFAOYSA-N 2,4,6-trinitrotoluene Chemical compound CC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O SPSSULHKWOKEEL-UHFFFAOYSA-N 0.000 description 1
- PLAZTCDQAHEYBI-UHFFFAOYSA-N 2-Nitrotoluene Chemical compound CC1=CC=CC=C1[N+]([O-])=O PLAZTCDQAHEYBI-UHFFFAOYSA-N 0.000 description 1
- LQNUZADURLCDLV-UHFFFAOYSA-N Nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- VLZLOWPYUQHHCG-UHFFFAOYSA-N nitromethylbenzene Chemical compound [O-][N+](=O)CC1=CC=CC=C1 VLZLOWPYUQHHCG-UHFFFAOYSA-N 0.000 description 1
- 239000000015 trinitrotoluene 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
- C07C201/16—Separation; Purification; Stabilisation; Use of additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
<Desc/Clms Page number 1>
PROCEDE ET DISPOSITIF POUR LE LAVAGE DES HYDROCARBURES AROMATIQUES
NITRIFIES.
Le'objet de l'invention est un procédé et un dispositif pour le lavage continuel des hydrocarbures aromatiques nitrifies. Le nouveau procédé consiste dans le fait que la matière nitrurée est mélangée mécaniquement avec l'eau de lavage et que l'on obtient une émulsion, laquelle est de nouveau décomposée en ses composants,dans un stade plus avancé du procédé.
La séparation des hydrocarbures aromatiques nitrifiés des acides de nitruration et les hydrocarbures non-nitrifiés se fait, en technique, des manières les plus diverses, en emploie -souvent une très grande cuve avec séparations successives, on connait aussi l'usage de colonnes avec répartition spéciale d'air ou avec agitateur. Les deux procédés ont des désavantages s premièrement les grands frais d'appareillage, lors de l'emploi de cuves en second lieu le contact avec l'air, ce qui entraîne toujours des pertes et souvent la détérioration de la matière nitrurée par exemple par la coloration brunâtre de la nitrotoluène et, enfin, ce procédé n'est pas sans danger, les explosions étant fréquentes.
Selon l'invention, la matière nitrurée et l'eau de lavage, forment une émulsion, émulsion obtenue au moyen d'un mélangeur intensif et continu, fonctionnant à un nombre de tours élevé,ou d'un émulsionneur quelconque. Par le degré élevé de décomposition de la matière nitrurée on obtient une superfi- cie optimum pour chaque goutte du liquide, d'où résulte un grand effet de lavage dans un laps de temps très restreint, Cette émulsion est ensuite à nouveau décomposé5 d'une manière connue, par exemple au moyen d'un séparateur mécanique à système centrifuge ou à tuyaux.
Il est également possible,de connecter, de cette façon,\) plusieurs systèmes d'émulsionneurs et de séparateurs en série et d'obtenir ainsi un système en deux ou trois phases de lavage une phase acide, une phase alcaline et une phase neutreo En plus, on peut diminuer ou augmenter le moyen de lavage dans chaque phase de lavage et on peut travail-
<Desc/Clms Page number 2>
1er sur la matière à laver,, avec le milieu de lavage coulant dans le même sens ou coulant totalement ou en partie à contre-courant. II va de soi, qu'un procédé pareil donne des résultats optima avec des moyens de lavage restreints.
Le nouveau procédé peut être utilisé pour le lavage de tous les corps nitrifiés., émulsifs dans le milieu de lavage à température normale ou réchauffée- et plus spécialement du nitrobenzol, du mono- bi- et trinitroto- luène, de la naphtaline nitrifiée été...
Le dispositif pour l'exploitation du procédé consiste dans la connection d'émulsionneurs et séparateurs dans un système à plusieurs phases, avec la possibilité de combiner l'émulsionneur et le sapérateur, laquelle réal lisation correspond aussi bien à l'idée de l'invention que l'emploi d'émulsionneurs et de séparateurs indépendants, quelque soit leur principe de fonction- nement.
<Desc / Clms Page number 1>
METHOD AND DEVICE FOR WASHING AROMATIC HYDROCARBONS
NITRIFIES.
The object of the invention is a method and a device for the continuous washing of nitrified aromatic hydrocarbons. The new process consists in the fact that the nitrided material is mechanically mixed with the washing water and that an emulsion is obtained, which is again broken down into its components, in a more advanced stage of the process.
The separation of nitrified aromatic hydrocarbons from nitriding acids and non-nitrified hydrocarbons is carried out technically in the most diverse ways, often using a very large tank with successive separations, we also know the use of columns with distribution special air or with agitator. Both processes have drawbacks: firstly, the high equipment costs, when using tanks and secondly contact with air, which always leads to losses and often deterioration of the nitrided material, for example by the brownish coloration of nitrotoluene and, finally, this process is not without danger, the explosions being frequent.
According to the invention, the nitrided material and the washing water form an emulsion, an emulsion obtained by means of an intensive and continuous mixer, operating at a high number of revolutions, or of any emulsifier. By the high degree of decomposition of the nitrided material an optimum surface area is obtained for each drop of the liquid, resulting in a great washing effect in a very short period of time. This emulsion is then further decomposed5 in a very short time. known manner, for example by means of a mechanical separator with a centrifugal system or with pipes.
It is also possible to connect, in this way, \) several systems of emulsifiers and separators in series and thus obtain a system in two or three washing phases, an acid phase, an alkaline phase and a neutral phase. more, we can decrease or increase the washing medium in each washing phase and we can work
<Desc / Clms Page number 2>
1st on the material to be washed, with the washing medium flowing in the same direction or flowing totally or partially against the current. It goes without saying that such a process gives optimum results with limited washing means.
The new process can be used for washing all nitrified bodies, emulsifiers in the washing medium at normal or warmed temperature - and more especially nitrobenzol, mono- and trinitrotoluene, and nitrified naphthalene. ..
The device for the operation of the process consists in the connection of emulsifiers and separators in a multi-phase system, with the possibility of combining the emulsifier and the saperator, which realization also corresponds to the idea of the invention. that the use of emulsifiers and independent separators, whatever their operating principle.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
BE518008A true BE518008A (en) |
Family
ID=154713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE518008D BE518008A (en) |
Country Status (1)
Country | Link |
---|---|
BE (1) | BE518008A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2705020B1 (en) | 2011-05-19 | 2015-04-08 | Josef Meissner GmbH & Co. KG | Method and apparatus for purifying nitration products |
-
0
- BE BE518008D patent/BE518008A/fr unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2705020B1 (en) | 2011-05-19 | 2015-04-08 | Josef Meissner GmbH & Co. KG | Method and apparatus for purifying nitration products |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Priego-Capote et al. | Analytical uses of ultrasound I. Sample preparation | |
Chaouchi et al. | Extraction of endocrine disrupting compound propylparaben from water by emulsion liquid membrane using trioctylphosphine oxide as carrier | |
EP0495860B1 (en) | Method and device for the magnetic treatment of a fluid | |
US3255571A (en) | Method and means for treating oil well emulsions | |
BE518008A (en) | ||
Boonyasuwat et al. | Surfactant recovery from water using a multistage foam fractionator: Part I effects of air flow rate, foam height, feed flow rate and number of stages | |
AU717874B2 (en) | Process for recovering components of a float material from waste water treatment system | |
Rezaei et al. | Determination of diphenylamine residue in fruit samples by supercritical fluid extraction followed by vesicular based-supramolecular solvent microextraction | |
Li et al. | Oil removal from solid surface by using surfactant-free microemulsion regulated by CO2: A sustainable approach for treating oily waste | |
JP3486283B2 (en) | Dehydration method of heavy oil | |
FR2423505A1 (en) | WASHING PROCESS OF A POLYCARBONATE SOLUTION IN AN ORGANIC SOLVENT | |
JPH0452329B2 (en) | ||
Wang et al. | A solidified floating organic drop-dispersive liquid–liquid microextraction based on in situ formed fatty acid-based deep eutectic solvents for the extraction of benzophenone-UV filters from water samples | |
Ambrosone et al. | Impact of edible surfactants on the oxidation of olive oil in water-in-oil emulsions | |
Roustan et al. | Mass transfer of ozone to water: a fundamental study | |
CA1135634A (en) | Apparatus for separating emulsions through coalescence | |
Ribeiro et al. | Solubilities of triolein in supercritical CO2 | |
Gromadzka et al. | Degradation of diclofenac and clofibric acid using ozone-loaded perfluorinated solvent | |
Matsuda et al. | Concentration and separation of impurities in liquid by freezing with supersonic radiation | |
FR2469194A1 (en) | Concn. of solutions - by contact with emulsion that extracts solvent from soln. | |
RU2705096C1 (en) | Method for destruction of water-oil emulsions | |
Akkar et al. | The feasibility of emulsion liquid membrane for the extraction of organic acids from wastewater | |
Lacheheb et al. | Removal of furosemide from water by emulsion liquid membrane: Influence of experimental conditions and real water matrices | |
SU990259A1 (en) | Apparatus for separating two immiscible liquids | |
JPS60191697A (en) | Traveling filter cloth type dehydrator |