Electrolysis: processes – compositions used therein – and methods – Electrolytic synthesis – Preparing nonmetal element
Patent
1997-08-15
2000-02-15
Phasge, Arun S.
Electrolysis: processes, compositions used therein, and methods
Electrolytic synthesis
Preparing nonmetal element
205633, 205687, 204278, C25B 900, C25B 1500
Patent
active
060248602
ABSTRACT:
A process and an apparatus for electrochemical decomposition of sodium azide in aqueous alkaline solutions form sodium hydroxide, ammonia, nitrogen, and oxygen. The apparatus contains five major parts, which are (1) an electrolyzer which contains one or more cell units, (2) a rectifier which supplies D.C. electrical current to the electrolyzer, (3) a tank which holds the electrolyte (containing sodium hydroxide and sodium azide) needed to be processed in the electrolyzer, (4) a vacuum which can remove off gases generated by electrolysis in the electrolyzer, and (5) a recovery system which can further separate off gases. It is optional to add a pump in between the tank and the electrolyzer to be used for filling, mechanical agitation, or recycle. The process includes (1) transferring the aqueous solution containing the sodium azide to the electrolyzer, (2) subjecting the aqueous solution to electrolytic action to decompose the sodium azide and to generate off gases including nitrogen, oxygen, and ammonia, and (3) removing off gases. The off gases can also be removed by vacuum and recovered separately in a recovery system.
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Behrens Ralph Edward
Cash Peter Philip
Rhees Raymond Charles
American Pacific Corporation
Phasge Arun S,.
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