US 12,071,353 B2
Recovery of bromine from waste bromide brines
Peter K. Stoimenov, Goleta, CA (US); Zachary Snodgrass, Santa Barbara, CA (US); and John C. Matsubu, Santa Barbara, CA (US)
Assigned to REACTION 35, LLC, Santa Barbara, CA (US)
Filed by REACTION 35, LLC, Santa Barbara, CA (US)
Filed on Jan. 23, 2023, as Appl. No. 18/100,470.
Claims priority of provisional application 63/302,446, filed on Jan. 24, 2022.
Prior Publication US 2023/0234846 A1, Jul. 27, 2023
Int. Cl. C01B 7/09 (2006.01); C01D 3/10 (2006.01); C01D 3/14 (2006.01)
CPC C01B 7/096 (2013.01) [C01D 3/10 (2013.01); C01D 3/14 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A process comprising:
supplying a bromide brine;
removing an organic compound from the bromide brine by:
adjusting the pH of the bromide brine to phase separate organic compounds; and
removing the phase separated organic compounds from the bromide brine;
acidifying the bromide brine to form a stream containing hydrobromic acid;
separating the hydrobromic acid from the stream containing hydrobromic acid;
acidifying with an acid the bromide brine to form hydrobromic acid; and
separating the hydrobromic acid from other species with higher and lower volatility through distillation after the step of acidifying the bromide brine to form hydrobromic acid, wherein the step of separating the hydrobromic acid includes forming the following streams:
1) volatile organic compounds or organic compounds that distill with steam;
2) water;
3) a water containing hydrochloric acid; and
4) hydrobromic acid.