DE873994C - Process for the production of hydrogen halide solutions - Google Patents

Process for the production of hydrogen halide solutions

Info

Publication number
DE873994C
DE873994C DEB7584D DEB0007584D DE873994C DE 873994 C DE873994 C DE 873994C DE B7584 D DEB7584 D DE B7584D DE B0007584 D DEB0007584 D DE B0007584D DE 873994 C DE873994 C DE 873994C
Authority
DE
Germany
Prior art keywords
hydrogen
production
hydrogen halide
halide solutions
solutions
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
DEB7584D
Other languages
German (de)
Inventor
Hans Dr Krzikalla
Ernst Dr Woldan
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to DEB7584D priority Critical patent/DE873994C/en
Application granted granted Critical
Publication of DE873994C publication Critical patent/DE873994C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B7/00Halogens; Halogen acids
    • C01B7/01Chlorine; Hydrogen chloride

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Gas Separation By Absorption (AREA)

Description

Verfahren zur Herstellung von Halogenwasserstofflösungen Es wurde gefunden, daß flüssige N-substituierte Carbonamide von Fettsäuren sehr gut geeignet sind, um Lösungen der Halogenwasserstoffe, und zwar sowohl des Chlorwasserstoffs als auch des Brom-, Jod- oder Fluoizvasserstoffs herzustellen.Process for the preparation of hydrogen halide solutions It has been found that liquid N-substituted carbonamides of fatty acids are very suitable are to solutions of the hydrogen halides, both of the hydrogen chloride as well as the bromine, iodine or fluorine hydrogen.

Im allgemeinen sind solche Amide besonders vorteilhaft, die sich von niederen Fettsäuren mit bis zu 5 Kohlenstoffatomen .ableiten oder in denen die Substituenten ,am Stickstoff niedrigmolekular sind, also z. B. Alkylgruppen mit bis zu 5 Kohl.enstoffatomen darstellen; am besten geeignet sind solche Amide, in denen beide Bedingungen erfüllt sind. Im allgemeinen kann man sagen: daß die ,a.m Stickstoff disubstituierten Amide sich noch günstiger verhalten als die monosubstitui;ert@en. Geeignete Amide sind beispielsweise Monomethylfo!rmamid, Dimethylform,amid, Methyläthylformamid, Mono- und Dipropylformamid, Mono- und Di,allkylformamid, Mono- und Dibutylformamid, Methylacetamid, Mono-oder Dimethylpropionamid, Dimethylstearinamid, Formylpyrrolidin oder auch Gemische dieser Säureamide.In general, those amides which differ from derive lower fatty acids with up to 5 carbon atoms or in which the substituents , are low molecular weight on nitrogen, e.g. B. alkyl groups with up to 5 carbon atoms represent; The most suitable amides are those in which both conditions are met are. In general one can say: that the amides, a.m nitrogen disubstituted behave even more favorably than the monosubstituted @ s. Suitable amides are for example monomethylformamide, dimethylform, amide, methylethylformamide, mono- and dipropylformamide, mono- and di, alkylformamide, mono- and dibutylformamide, methylacetamide, Mono- or dimethylpropionamide, dimethylstearinamide, formylpyrrolidine or mixtures this acid amide.

Beispielsweise vermag das Dimethylformamid bei o° und 76omm Druck mehr als das Eigengewicht an Chlorwasserstoff und etwa das al/Jache des Eigengewichts an Bromwasserstoff zu absorbieten und auch bei Zimmertemperatur noch beträchtliche Mengen dieser,Gase aufzunehmen. Bei Erwärmen und bzw. oder runter vermindertem Druck werden die Halogenwasserstoff e wieder abgegeben, tihne daß die Absiorptionsflüssigkeit dabei wesentlichen Schaden leidet.For example, dimethylformamide is capable of pressure at 0 ° and 76 ° more than its own weight in hydrogen chloride and about the equivalent of its own weight to absorb hydrogen bromide and also at room temperature still take up considerable amounts of these gases. When warming up and / or down The hydrogen halides are released again under reduced pressure, without the Absorbing liquid suffers substantial damage in the process.

Das Verfahren kann beispielsweise dazu dienen, um aus trockenen Gasen, die H,alogenwasserstoffe enthalten, diese zu absiorbieren und nachher wieder in Freiheit zu setzen. Dabei kann unter beliebigen Drucken gearbeitet werden. Bei, erhöhtem Druck und bei tiefer Temperatur ist das Absorptionsvermö;gen,der genannten Amide am besten. Es ist dabei auch günstig, daß die Siedepunkte der Amide ziemlich hoch liegen und ihre Verdunstungsgeschwindigkeiten klein sind, so daß beim Austreiben des Halogenwasserstoffs keime nennenswerten. Mengen Lösungsmittel verlorengehen. Wegen der hohen Halogenwassierstoffkonzentrationen kann man mit den Lösungen auch chemische Reaktionen vornehmen. Beispiel i Man leitet bei o° und unter gewöhnlichem Druck Chlorwasserstoffgas durch eine poröse Platte in i oo g Dimethyliormamid. Es werden etwa i 3 a g, d.h. etwa 831 Chlorwasserstoff absorbiert. Beize Erwärmen joder Evakuieren wird das Gas wieder abgegeben.The method can be used, for example, to convert dry gases, which contain hydrogen atoms, to absorb them and then to reintegrate them Freedom to put. You can work under any pressure. At, increased pressure and at low temperature is the absorption capacity; gen, the mentioned Amide best. It is also favorable that the boiling points of the amides are fairly high are high and their evaporation rates are low, so that when expelled of the hydrogen halide germs worth mentioning. Loss of solvent. Because of the high hydrogen halide concentrations, one can also use the solutions carry out chemical reactions. Example i One leads at o ° and under ordinary Pressurized hydrogen chloride gas through a porous plate in 100 g of dimethyliormamide. It about i 3 a g, i.e. about 831 hydrogen chloride, are absorbed. Stain warming yoder Evacuation releases the gas again.

Beispiel a Man leitet bei o° und unter gewöhnlichem Druck durch eine poröse Platte Bromwasserstoff in ioog Diäthylformamid. Es werden in kurzer Zeit etwa zq.6;g, das sind etwa 681 Bromwasserstoff, absorbiert. Durch Erwärmen läßt sich der Bromwasserstoff wiedergerovinnen. Beispiel 3 Man leitet ein trockenes, Fluorwasserstoff !enthaltendes Gasgemisch bei Temperaturen zwischen o und i o' durch Dimethylacetamid. Der Fluorwass:erstoff wird absorbiert und kann anschließend durch Erwärmen der Lösung rein zurückgewonnen werden.Example a One passes through a at 0 ° and under normal pressure porous plate hydrogen bromide in ioog diethylformamide. It will be in a short time about 6; g, that is about 681 hydrogen bromide, is absorbed. Leaves by heating the hydrogen bromide re-gerovin. Example 3 A dry, Gas mixture containing hydrogen fluoride at temperatures between 0 and 10 ' Dimethylacetamide. The hydrofluoric acid is absorbed and can then pass through Heating the solution can be recovered pure.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Halogenwasserstofflösungen,dadurch gekennzeichnet, daß man als Lösungsmittel bei den Arbeitsbedingungen flüssige N-substituierte Carbonamide von Fettsäuren verwendet.PATENT CLAIM: Process for the production of hydrogen halide solutions, thereby characterized in that liquid N-substituted solvents are used under the working conditions Carbonamides used from fatty acids.
DEB7584D 1942-01-11 1942-01-11 Process for the production of hydrogen halide solutions Expired DE873994C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB7584D DE873994C (en) 1942-01-11 1942-01-11 Process for the production of hydrogen halide solutions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB7584D DE873994C (en) 1942-01-11 1942-01-11 Process for the production of hydrogen halide solutions

Publications (1)

Publication Number Publication Date
DE873994C true DE873994C (en) 1953-04-20

Family

ID=6955479

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB7584D Expired DE873994C (en) 1942-01-11 1942-01-11 Process for the production of hydrogen halide solutions

Country Status (1)

Country Link
DE (1) DE873994C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2836580A1 (en) * 1978-08-21 1980-02-28 Huels Chemische Werke Ag METHOD FOR SEPARATING CHLORINE AND HYDROGEN
WO2006029788A1 (en) * 2004-09-13 2006-03-23 Basf Aktiengesellschaft Method for separating hydrogen chloride and phosgene

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2836580A1 (en) * 1978-08-21 1980-02-28 Huels Chemische Werke Ag METHOD FOR SEPARATING CHLORINE AND HYDROGEN
EP0008330A1 (en) * 1978-08-21 1980-03-05 Chemische Werke Hüls Ag Process for the separation of hydrogen chloride and hydrogen bromine
WO2006029788A1 (en) * 2004-09-13 2006-03-23 Basf Aktiengesellschaft Method for separating hydrogen chloride and phosgene

Similar Documents

Publication Publication Date Title
DE873994C (en) Process for the production of hydrogen halide solutions
DE2453864C3 (en) Continuous process for the separation of mixtures of zirconium tetrachloride and hafnium tetrachloride
DE1963946B2 (en) PROCESS FOR THE PRODUCTION OF CHLORINE
DE945239C (en) Process for the production of cyanuric chloride
US3883642A (en) Producing concentrated hydrofluoric acid substantially free from impurities using polyether and polyol absorbents and nitrogen flushing gas
DE69206623T2 (en) CHLORINE-FREE FLUORINE HYDROGEN COOLANT.
DE1132903B (en) Process for the production of trifluorohydrocarbons or difluorocarbons
DE759365C (en) Production of concentrated nitric acid from nitrogen oxides, oxygen or gases containing such and water
AT224652B (en) Process for the production of vinyl phosphonic acid
GB1343052A (en) Production of non-aqueous hydrogen peroxide solutions
AT132706B (en) Process for the preparation of hydrogen halide addition products of acetylene.
GB1066679A (en) Preparation of fluoro compounds
DE802457C (en) Process for the preparation of hexamethylenetetramine
DE933687C (en) Process for the production of hydrogen cyanide
DE670831C (en) Production of alkali nitrates from alkali chlorides and nitric acid
DE867241C (en) Process for dissolving sulfuric acid anhydride
DE374773C (en) Process for the catalytic production of ammonia
DE235421C (en)
DE364521C (en) Process for the production of nitric acid from the gases obtained by the oxidation of ammonia
Stephanou et al. Phase Equilibrium Studies on Pyridine—Amide Systems1
AT202118B (en) Process for the regeneration of solutions used for the separation and recovery of carbon dioxide
AT214408B (en) Process for obtaining anhydrous uranium tetrafluoride
DE2146775A1 (en) Carbon dioxide and/or hydrogen sulphide removal - - from gases, using aq solns of ethylene- or propylene-diamine derivs
DE750886C (en) Process for compressing acetylene
DE745306C (en) Production of nitric acid by aqueous absorption of oxygen-containing ammonia combustion gases