Apparatus for recovering higher melting organic materials via fractional sublimation

摘要

An apparatus for recovering higher melting organic materials which is an upright column containing a gas inlet at a lower portion thereof and a gas outlet at the upper portion thereof. The apparatus has a wall disposed in the flow of the gas between the gas inlet and the gas outlet which wall is perforated to allow gas to flow therethrough. Cooling means are provided on the side of the wall away from the gas inlet to cool components of a gas flowing therethrough.