DE217554C - - Google Patents
Info
- Publication number
- DE217554C DE217554C DENDAT217554D DE217554DA DE217554C DE 217554 C DE217554 C DE 217554C DE NDAT217554 D DENDAT217554 D DE NDAT217554D DE 217554D A DE217554D A DE 217554DA DE 217554 C DE217554 C DE 217554C
- Authority
- DE
- Germany
- Prior art keywords
- zinc
- tetrachloroethane
- dichloroethylene
- heat
- reaction
- 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
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 10
- 229910052725 zinc Inorganic materials 0.000 claims description 7
- 239000011701 zinc Substances 0.000 claims description 7
- QPFMBZIOSGYJDE-UHFFFAOYSA-N 1,1,2,2-Tetrachloroethane Chemical compound ClC(Cl)C(Cl)Cl QPFMBZIOSGYJDE-UHFFFAOYSA-N 0.000 claims description 5
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-dichloroethane Chemical group ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 2
- 230000004048 modification Effects 0.000 claims 1
- 238000006011 modification reaction Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010992 reflux Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- -1 chlorine zinc Chemical compound 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000010814 metallic waste Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/23—Preparation of halogenated hydrocarbons by dehalogenation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Electrolytic Production Of Metals (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
-JKi 217554-KLASSE 12o. GRUPPE -JKi 217554- CLASS 12o. GROUP
in NÜRNBERG.in NUREMBERG.
Patentiert im Deutschen Reiche vom 7. November 1907 ab. Längste Dauer: 9. August 1922.Patented in the German Empire on November 7, 1907. Longest duration: August 9, 1922.
Es hat sich gezeigt, daß das Eisen oder Aluminium, welches nach dem Verfahren des Patentes 216070 auf symmetrisches Tetrachloräthan bei Gegenwart von Wasser einwirken gelassen wird, vorteilhaft durch Zink ersetzt wird.It has been shown that the iron or aluminum which is obtained by the method of Patent 216070 act on symmetrical tetrachloroethane in the presence of water is left, is advantageously replaced by zinc.
Bei Anwendung von feinverteiltem Zink (Zinkstaub) geht die Reaktion bei mäßiger Wärme unter lebhafter Wärmeentwicklung vor sich, so daß äußere Wärmezufuhr nicht erforderlich ist. Die entwickelte Wärme genügt, um das gebildete Dichloräthylen zu verdampfen. Bei Anwendung von massivem Zink (Blechabfälle, granuliertes Zink u. dgl.) empfiehlt es sich dagegen, einige Zeit am Rückflußkühler zu erhitzen.When using finely divided zinc (zinc dust), the reaction is moderate Heat with vigorous heat development in front of you, so that external heat supply is not required is. The heat generated is sufficient to vaporize the dichloroethylene formed. Recommended when using solid zinc (sheet metal waste, granulated zinc, etc.) on the other hand, it is advisable to heat the reflux condenser for some time.
Beispielsweise verfährt man so, daß Tetrachloräthan mit der Hälfte seines Volumens Wasser in einem mit Rückflußkühler und Rührer versehenen Kessel auf 60 ° erwärmt und darauf unter Rühren allmählich Zinkstaub eingeworfen wird, wobei jedesmal stürmisches Verdampfen des gebildeten Dichloräthylens stattfindet. Statt dessen kann man auch langsam Tetrachloräthan in eine Zinkstaubwassermischung unter Rühren einfließen lassen.For example, one proceeds so that tetrachloroethane with half of its volume Water heated to 60 ° in a kettle equipped with a reflux condenser and stirrer and then zinc dust is gradually thrown in with stirring, each time stormy Evaporation of the dichloroethylene formed takes place. Instead, you can slowly pour tetrachloroethane into a zinc dust water mixture while stirring.
Zweckmäßig wird der Apparat so eingerichtet, daß das gebildete Dichloräthylen durch einen Fraktionieraufsatz hindurch abdestilliert, in welchem sich das etwa verdampfende Tetrachloräthan kondensiert, so daß letzteres wieder in den Apparat zurückfließt.Appropriately, the apparatus is set up so that the dichloroethylene formed by a fractionating attachment is distilled off, in which the tetrachloroethane which has evaporated is about to be removed condenses so that the latter flows back into the apparatus.
Um das in der entstandenen Chlorzinklösung enthaltene Zink wieder in die Reaktion einführen zu können, scheidet man es zweckmäßig während oder nach der Reaktion elektrolytisch ab. Eine schwammige Beschaffenheit des so wiedergewonnenen Zinkes macht es für den vorliegenden Fall besonders geeignet.To reintroduce the zinc contained in the resulting chlorine zinc solution into the reaction it is expedient to separate it electrolytically during or after the reaction away. A spongy nature of the zinc recovered in this way makes it particularly suitable for the present case.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE217554C true DE217554C (en) |
Family
ID=478850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT217554D Active DE217554C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE217554C (en) |
-
0
- DE DENDAT217554D patent/DE217554C/de active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE217554C (en) | ||
| DE250086C (en) | ||
| DE228914C (en) | ||
| DE229249C (en) | ||
| DE663206C (en) | Process for the distillation of hydrogen peroxide | |
| DE640456C (en) | Process for the preparation of 3, 4-dioxyphenylmonocycloalkylaminobutan-1-ols | |
| DE714456C (en) | Process for the production of alloys containing lead and alkali metal | |
| DE479661C (en) | Processing of converter dusts, mainly consisting of oxide mixtures of zinc, tin, lead and copper | |
| DE376755C (en) | Electrolytic tin bath for the representation of sponge-free tin crystals | |
| AT34247B (en) | Process for the preparation of dichloroethylene from symmetrical tetrachloroethane. | |
| DE431508C (en) | Working with hot solutions of ammonium chloride, which contain ammonium nitrate in addition to ammonium chloride | |
| DE305449C (en) | ||
| DE597582C (en) | Process for the production of a slightly melting potash, which is particularly suitable for glass production | |
| DE403119C (en) | Process for the electrolytic extraction of copper from the waste liquors produced during silver electrolysis | |
| DE480549C (en) | Process for the electrowinning of pure aluminum | |
| AT119266B (en) | Cleaning process for magnesium and its high-percentage alloys. | |
| DE169358C (en) | ||
| DE276257C (en) | ||
| DE609026C (en) | Process for the preparation of 5,5-disubstituted 6-aminohydrouracil and its coagulates | |
| DE243653C (en) | ||
| DE517162C (en) | Process for improving the corrosion resistance of magnesium alloys | |
| DE16258C (en) | Process for the production of a tin solution for the galvanic tinning of metals, especially lead | |
| DE241380C (en) | ||
| DE246079C (en) | ||
| DE686036C (en) | Process for the production of clampable pressure plates for amalgam printing |