Process for the recovery of pure cyanogen chloride

Details Process for the recovery of pure cyanogen chloride Process for the recovery of pure cyanogen chloride

1980-07-31

1982-05-04

Spitzer, Robert H.

Gas separation

Means within gas stream for conducting concentrate to collector

55 71, 203 42, 203 96, 423383, B01D 5314

Patent

active

043280102

ABSTRACT:
To obtain a cyanogen chloride which is practically free from water and preferably also free from hydrogen cyanide, hydrogen chloride and organic compounds, the crude cyanogen chloride is fractionally distilled. The return is led in countercurrent flow to the crude gas, thereby takes up the impurities and is further evaporated in the lower portion of the column, respectively in a special apparatus, by a liquid whose temperature is higher than the boiling temperature of cyanogen chloride. Thereby this liquid also takes up the impurities. The purification action is aided by a wash for the crude cyanogen chloride connected in series before it enters the fractionating column. It is very advantageous to combine the process with a plant for the production of cyanogen chloride.

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Branajew, Chem. In. Moskau 44, (1968), p. 5.

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