METHOD FOR MAKING BROMIDES

Bromine containing compounds, such as calcium bromide, sodium bromide and the like, are prepared in high purity and more quickly with less waste by using a process with two bromination stages and often a third step wherein the crude product mixture can be adjusted to meet specific product requiremen...

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Bibliographische Detailangaben
Hauptverfasser: GOODWIN Nate, BROADHURST Hugh, RAY Thomas, G, BARTLEY David, W
Format: Patent
Sprache:eng ; spa
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Beschreibung
Zusammenfassung:Bromine containing compounds, such as calcium bromide, sodium bromide and the like, are prepared in high purity and more quickly with less waste by using a process with two bromination stages and often a third step wherein the crude product mixture can be adjusted to meet specific product requirements. In the first bromination stage, the majority, but not all, of a substrate is brominated usiung a reductive bromination reaction, the remaining unreacted substrate is converted to product in the second stage through another a reductive bromination reaction, although the specific reagents may be different, wherein the addition of bromine and a reducing agent are carefully monitored. La presente invención se refiere a un reactor de bucle que comprende un mezclador estático en línea, un intercambiador de calor, un sistemas de control en cascada de pH y potencial de oxidación/reducción (ORP), una alimentación de bromo y una alimentación de un agente reductor, en donde al menos uno del sistema de control en cascada de pH o el sistema de control en cascada de ORP está configurado para controlar la velocidad de alimentación de bromo a través de la alimentación de bromo y/o la velocidad de alimentación del agente reductor a través de la alimentación del agente reductor.