AT64719B - Process for separating neon from gas mixtures. - Google Patents

Description

  

   <Desc / Clms Page number 1>
 



  Process for separating neon from gas mixtures.



   It has been found that in a container which is provided with electrodes made of carbon or a metal such as iron, copper etc. and filled with dilute gases such as nitrogen, oxygen, helium etc., these gases are absorbed relatively quickly when a permanent electrical discharge is allowed to pass between the electrodes.



   It has been found, however, that if the contents of the container are made up of neon, the absorption thereof is exceptionally considerable for the same degree of dilution
 EMI1.1
 Electrodes is.



     The invention relates to a method of separating the neon from the gases with which it is mixed and is based on the phenomena noted above. From the foregoing it follows, and it has actually been established, that when a mixture of neon with other gases is introduced under a pressure of several millimeters of mercury into a closed container provided with electrodes and when a continuous current of electrical discharges is passed through the electrodes , the foreign gases are absorbed significantly faster than the neon, so that this ultimately remains in a purified state or at least so pure,

   that in the spectrum of the remaining gas at most a little hydrogen or argon can be noticed if such gases were present in the mixture.



   In order to facilitate cleaning, the electrodes and the walls of the container can advantageously be freed from occluded gases beforehand. which would undesirably worsen the quality of the content to be cleaned. To this end makes
 EMI1.2
 drive the matter even further with the help of a two or three-time cleaning of the container by means of the gas mixture that is to be cleaned. the air pump being activated after each cleaning process; rd under the passage of electricity, it can lead to a further acceleration of the absorption of the foreign gases
 EMI1.3
 Condition in the container itself in which it is obtained is intended to be used.

   This is particularly the case when it comes to achieving diluted gas spaces. which are particularly easily permeable to electrical discharges; it is known to be one of the most remarkable hallmarks of neon. which is interestingly the case with Hertzian wave detectors. used in fluorescent tubes and the like.

   The importance of the process becomes particularly apparent when one considers that it enables the neon to be separated from helium, although these two gases are chemically inert in the same way, and so is the process of absorption by means of carbon at the temperature of Do not allow nutty air to separate, since helium is even less easily absorbed by carbon than neon.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT CLAIM: Process for separating neon from gas mixtures, characterized in that the gas mixture to be treated is exposed to the electrical discharges between the electrodes under reduced pressure in a closed container provided with electrodes which have been cleaned beforehand, if necessary, the neon being exposed to the Electrodes slower than the foreign gases is absorbed, remains practically pure. ** WARNING ** End of CLMS field may overlap beginning of DESC **.