Process for the removal of impurities from hydrazine hydrate

Details Process for the removal of impurities from hydrazine hydrate Process for the removal of impurities from hydrazine hydrate

Filed on

1994-08-26

Date issued

1996-01-16

Examiner

Manoharan, Virginia

Patent Class

Distillation: processes, separatory

SubClass

With disparate physical separation

SubSubClass

Utilizing solid sorbent

Other Related Categories

203 47, 203 91, 203100, 210691, 210692, 423407, B01D 310, C01B 2116

Type

Patent

Status

active

Patent number

054845114

Description

ABSTRACT:
A process for the removal of organic impurities and dissolved salts from hydrazine hydrate and aqueous solutions thereof by distillation of the hydrazine hydrate under reduced pressure, passing the hydrazine hydrate vapor through an adsorbent, and condensing the vapor.

REFERENCES:
patent: 2799631 (1957-07-01), Van Hessart
patent: 3028219 (1962-04-01), Rahlf et al.
patent: 3458283 (1969-07-01), Meissner et al.
patent: 3740436 (1973-06-01), Rigsby
patent: 4657751 (1987-04-01), Alicot et al.
patent: 4963232 (1990-10-01), Kuriyama et al.
CA 115: 74 665.

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