METHOD AND DEVICE FOR CARRYING OUT REACTION MIXTURE FIRST STEP INGREDIENT SEPARATION OBTAINED DURING SYNTHESIS OF ASYMMETRIC DIMETHYLHYDRAZINE BY RASCHIG PROCESS

摘要

The present invention relates to a process for carrying out the first stage of separation of constituents of a reaction mixture obtained during synthesis of asymmetric dimethylhydrazine by the Raschig method, consisting in sending, into an empty central section (B) of a column, the reaction mixture coming from said synthesis, this central section being surmounted by a column (C) in which is effected separation of the volatile compounds contained in said mixture and being extended downwardly by an exhausting section (A).