Method for manufacturing hydroxylamine

Details Method for manufacturing hydroxylamine Method for manufacturing hydroxylamine

C - Chemistry, Metallurgy

01

B

C01B 21/14 (2006.01)

Patent

CA 2266453

An improved ion exchange process for purifying and/or concentrating hydroxylamine from an aqueous solution comprising hydroxylammonium ion and counter anions wherein ion exchange process conditions including effluent pH, effluent conductivity, and ion exchange bed height can be monitored and used to identify when to switch from an ion exchange step feed to a water wash feed, and to switch from a desorbent step to a water rinse step.

Cette invention concerne un processus perfectionné d'échange ionique permettant de purifier et/ou de concentrer l'hydroxylamine d'une solution aqueuse comportant des ions hydroxylammonium et des contre-anions. Dans ce processus, il est possible de surveiller les facteurs de déroulement du processus d'échange ionique telles que le pH de l'effluent, la conductivité de l'effluent et la hauteur du lit d'échange ionique et de les utiliser de façon à identifier le moment propice pour passer d'une alimentation de l'étape d'échange ionique à une alimentation permettant le lavage à l'eau et pour passer d'une étape de désorption à une étape de rinçage à l'eau.

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