Process Intensification for the Recovery of Hydrogen Cyanide in the Andrussow Process

The aim of this work was to determine a cost-optimal design the distillation unit Andrussow process. For purpose, feed with mass flow rate 121 t h−1 and concentration ca. 2 wt % hydrogen cyanide (HCN) considered. An approach for process intensification developed goal achieve desired product qualities, while minimizing organonitrile accumulation in column. simple column established base case extended configuration side stripper taking into consideration heat integration It found that new allows much smaller organonitriles main column; reducing thereby operation issues decreasing considerably total annual cost by 61 as compared design.