Process and apparatus for carrying out the first stage of separa

Details Process and apparatus for carrying out the first stage of separa Process and apparatus for carrying out the first stage of separa

1981-06-02

1983-06-07

Sever, Frank

Distillation: processes, separatory

Plural distillations performed on same material

Distillation of initial distillate

203 99, 564499, B01D 314

Patent

active

043870058

ABSTRACT:
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).

REFERENCES:
patent: 3098017 (1963-07-01), Walter et al.

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