Desublimation of vapours of benzene carboxylic acids or their derivs - - by contact with a colder liquid

摘要

The vapours, possibly mixed with a carrier gas, are brought into contact with the liquid which wets in a coherent layer the entire inner surface of the desublimation apparatus as well as its entrance, which is heated above the dew point of the vapours introduced. On cooling the gas mixture the solid particles obtained form a suspension with the liquid.