Process for the purification of cyanogen chloride
AssigneeDeutsche Gold- und Silber-Scheideanstalt vormals Roessler
InventorsFriedhelm Geiger, Werner Heimberger, Gerd Schreyer
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Abstract
Cyanogen chloride is purified and the service life of activated carbon is increased in the subsequent trimerization of the cyanogen chloride to cyanuric chloride by process comprising reacting hydrogen cyanide with chlorine, in a given case in the presence of cyanogen chloride produced in the presence of water, which in a given case contains chlorine. The improvement comprises passing the cyanogen chloride over granular commercial sodium aluminum silicate or a molecular sieve of the mordenite type, at 20.degree.-100.degree.C., preferably 30.degree.-60.degree.C.
Claims13
A process of purifying impure cyanogen chloride gas prepared by the reaction of hydrogen cyanide with chlorine comprising passing the impure cyanogen chloride over granular sodium aluminum silicate or a mordenite molecular sieve at 20.degree. to 100.degree.C.
Dependencies are inferred from the claim text.