Process for the production of anhydrous hydrazine and device...

Details Process for the production of anhydrous hydrazine and device... Process for the production of anhydrous hydrazine and device...

2005-02-01

2005-02-01

Manoharan, Virginia (Department: 1764)

Distillation: processes, separatory

Distilling to separate or remove only water

From organic compound

C203S078000, C203S080000, C423S407000

Reexamination Certificate

active

06849161

ABSTRACT:
The present invention relates to a process for preparing anhydrous hydrazine. The process can include distilling an unconcentrated aqueous hydrazine solution into a starting binary solution, distilling the starting binary solution at a pressure where a concentration of hydrazine in the binary solution is greater than a concentration of an azeotrope at the distillation pressure, and recovering the anhydrous hydrazine.

REFERENCES:
patent: 2698286 (1954-12-01), Bircher, Jr.
patent: 2740692 (1956-04-01), Ryker et al.
patent: 4804442 (1989-02-01), Rigsby
patent: 599033 (1960-05-01), None
patent: 620713 (1949-03-01), None
patent: 695264 (1953-08-01), None
patent: 713792 (1954-08-01), None
patent: 890240 (1962-02-01), None

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