Preparation process of hydrazine hydrate

Details Preparation process of hydrazine hydrate Preparation process of hydrazine hydrate

1996-07-19

1998-04-28

Langel, Wayne

Chemistry of inorganic compounds

Nitrogen or compound thereof

Binary compound

C01B 2116

Patent

active

057441154

ABSTRACT:
A preparation process of hydrazine hydrate is herein disclosed which comprises the step of hydrolyzing a ketazine in a distillation column to obtain hydrazine hydrate, a nonionic surface active agent having a polyoxyethylene group in its molecule and/or silicon dioxide being present in the distillation column.
According to this process, in the hydrolytic distillation of the ketazine, flooding can be inhibited and thus a stable operation can be accomplished. As a result, hydrazine hydrate can economically advantageously be prepared.

REFERENCES:
patent: 4725421 (1988-02-01), Schirmann et al.
Database WPI, Section Ch, Week 8449, Derwent Publications Ltd., London GB; Class A97, AN 84-303768 XP002020370 of JP-A-59 189 185, 26 Oct. 1984.
Hiromu Hayashi, "Ammonia-Hydrazine Conversion Processes", 1988, vol. 41, pp. 213-224, Applied Catalysis, Amsterdam.
Database WPI, Section Ch, Week 8151, Derwent Publications Ltd., London, GB; Class E35, AN 81-94358D XP002020371 of SU-A-812 711, 15 Mar. 1981.
"Kirk-Othmer", Encyclopedia Of Chemical Technology, 3rd Edition, vol. 12, 1980, pp. 734-755.

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