PROCESS AND APPARATUS FOR CARRYING OUT THE FIRST STAGE OF SEPARATION OF CONSTITUENTS OF A REACTION MIXTURE OBTAINED DURING SYNTHESIS OF ASYMMETRIC DIMETHYLHYDRAZINE BY THE RASCHIG METHOD

摘要

ABSTRACT OF THE DISCLOSUREThe present invention relates to a process forcarrying out the first stage of separation of constituentsof a reaction mixture obtained during synthesis of asym-metric dimethylhydrazine by the Raschig method, consistingin sending, into an empty central section (B) of a column,the reaction mixture coming from said synthesis, thiscentral section being surmounted by a column (C) in whichis effected separation of the volatile compounds contain-ed in said mixture and being extended downwardly by anexhausting section (A).