Reactor and method for making bromides
AssigneeLANXESS Solutions US Inc.
InventorsThomas G. Ray, David W. Bartley, Hugh Broadhurst, Nate Goodwin
Life of this patent
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Abstract
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 using 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.
Claims14
A loop reactor comprising an inline static mixer, heat exchanger, reagent feeds, a pH cascade control system configured to control a reagent feed rate through at least one reagent feed and an oxidation/reduction potential cascade control system configured to control a reagent feed rate through at least one reagent feed wherein the loop reactor comprises as reagent feeds a bromine feed and a reducing agent feed, and wherein at least one of the pH cascade control system or oxidation/reduction potential cascade control system is configured to control the feed rate of bromine through the bromine feed and/or the feed rate of the reducing agent through the reducing agent feed.
Dependencies are inferred from the claim text.